An oil cooler 2 as a heat exchanger includes a male plate 100 having an upper surface 100a as a first surface configured to contact cooling water that is a heat medium, and a plurality of linearly extending protrusions 104 are formed at the upper surface 100a.
F28D 9/00 - Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
This exhaust purification device comprises a filter that collects fine particles in exhaust gas discharged from an internal combustion engine, a contact device that brings exhaust gas discharged from the filter into contact with a reducing agent, and a catalyst that extends in the axial direction, is disposed so as to be aligned with the filter, and promotes reaction between the reducing agent and nitrogen oxides in exhaust gas discharged from the contact device. The contact device is positioned in the axial direction relative to the catalyst.
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
This exhaust purification apparatus comprises: a bent guide passage that guides exhaust gas discharged from an internal combustion engine; a contact device that brings a reducing agent into contact with the exhaust gas discharged from the guide passage; and a regulator that regulates the flow of the exhaust gas in the contact device.
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
A purification apparatus 1 is provided with: a contact device 4 that brings a reducing agent into contact with an exhaust gas discharged from an internal combustion engine; and an SCR catalyst 52 that is disposed downstream of the exhaust gas with respect to the contact device 4 and promotes a reaction between the reducing agent and nitrogen oxides in the exhaust gas discharged from the contact device 4. The contact device 4 has an overflow pipe 43 extending in a Z-axis direction, the overflow pipe 43 has another end 43F from which the exhaust gas is discharged, and the other end 43F has an inclined surface 43G that intersects obliquely with respect to the Z-axis direction.
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
An exhaust purification apparatus includes: a contact device configured to bring a reducing agent into contact with exhaust gas discharged from an internal combustion engine; and a catalyst device connected to the contact device, the catalyst device having an axis extending in a first direction, the catalyst device having a catalyst to promote a reaction between the reducing agent and nitrogen oxides in the exhaust gas, the catalyst device communicating with the contact device, the contact device having an injection portion configured to inject the reducing agent into the exhaust gas, and a connecting portion of a tubular shape connecting the injection portion and the catalyst device, the connecting portion extending substantially in parallel with the first direction.
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
A mixing device includes a case surrounding a blowing section of a filter or a catalyst; an upper pipe segment having an opening facing a direction opposite to the blowing section and tilted relative to the vertical direction so that the more the upper pipe segment goes vertically downward, the closer it gets to the blowing section; a lower pipe segment bent from a lower end of the upper pipe segment and tilted relative to the vertical direction so that the more it goes vertically downward, the further away it gets from the blowing section, the lower pipe segment extending out from the case and connected to a selective catalytic reduction device; and an injector attached to the case and injecting a liquid additive toward an area faced by the opening, the area being located outside the upper pipe segment in the case.
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
F01N 13/00 - Exhaust or silencing apparatus characterised by constructional features
F01N 13/08 - Other arrangements or adaptations of exhaust conduits
An oil cooler 2 as a heat exchanger is provided with a male plate 100 having an upper surface 100a as a first surface with which cooling water, that is the heat medium, contacts, the upper surface 100a having a plurality of linearly extending protrusions 104 formed thereon.
F28D 9/02 - Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the heat-exchange media travelling at an angle to one another
F28F 3/04 - Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
An exhaust purification apparatus comprising: a contacting device which brings a reducing agent into contact with exhaust gas discharged from an internal combustion engine; and a catalytic device which is connected to the contacting device, is in communication with the contacting device, and has a catalyst that has an axis extending in a first direction and facilitates the reaction between the reducing agent and nitrogen oxide in the exhaust gas, wherein the contacting device has an injection part which injects the reducing agent into the exhaust gas, and a tubular connection part which extends substantially parallel to the first direction and which connects the injection part and the catalytic device.
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
The present invention makes it easy to vaporize an additive added upstream of a selective catalytic reduction device, and suppresses precipitation of the additive. This mixing device comprises: a case which surrounds a filter having a blow-out part where exhaust gas is blown out, or the blow-out part of a catalyst; an upper tube part which inclines vertically downward with respect to the vertical direction so as to approach the blow-out part in a region in the case facing the blow-out part, and which has an opening that opens in the side opposite from the blow-out part; a lower tube part which bends from the lower end of the upper tube part, inclines vertically downward with respect to the vertical direction so as to be separated from the blow-out part, and protrudes outward from the case and is connected to a selective catalytic reduction device; and an injection device which is attached to the case and injects a liquid additive toward a region that is on the inner side of the case and on the outer side of the upper tube part, and faces the opening.
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
To provide an exhaust gas purification catalyst that is less likely to cause an increase in pressure loss, even a large amount of zeolite-based SCR catalyst is used to improve NOx purification capability. The exhaust gas purification catalyst includes a DPF provided with zeolite having a primary particle size equal to or less than 0.5 μm. In addition, it is preferable that 50% particle size of the zeolite measured by dynamic light scattering is equal to or less than 2.0 μm, and further, it is preferable that the 90% particle size of the zeolite is equal to or less than 2.5 μm.
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 3/20 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operationControl specially adapted for catalytic conversion
The present invention improves the efficiency of oil separation by distributing, as evenly as possible, inflow into gaps between separation disks. This oil separator 2 for separating out an oil mist from a gas containing the oil mist is provided with: a plurality of separation disks 62 that each have an opening 62a in the middle and are stacked over one another with a gap in the axial direction so that the openings 62a overlap one another, and that rotate about an axis; and flow-regulating parts 75 that are provided to a central space 62 formed as a result of the stacking of the plurality of separation disks 62 and made up of the openings 62a, and that demarcate the central space 62 into an inside region and an outside region. Communicating parts 76 providing communication between the inside region and the outside region are formed at the flow-regulating parts 75. Gas is supplied to the inside regions, passes through the communicating parts 76 to flow to the outside regions, and flows from the outside regions into the gaps between the plurality of separation disks 62.
Provided is an exhaust gas purification catalyst in which pressure loss does not readily increase, even if a large amount of a zeolite-based SCR is used to improve NOx purification capacity. An exhaust gas purification catalyst has a DPF filled with a zeolite having a primary particle size of 0.5 μm or less. Further, it is more preferable for the 50% particle diameter of the zeolite measured by a dynamic light scattering method to be 2.0 μm or less, and for the 90% particle diameter to be 2.5 μm or less.
B01J 29/70 - Crystalline aluminosilicate zeolitesIsomorphous compounds thereof of types characterised by their specific structure not provided for in groups
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
B01J 37/02 - Impregnation, coating or precipitation
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
The purpose of the present invention is to provide a discharge gas purification catalyst capable of achieving both PM collection capacity and NOx purification capacity even when a large amount of a zeolite-based SCR is used. This discharge gas purification catalyst is characterized by being formed by filling a DPF substrate with a slurry that is prepared by using a zeolite containing Cu and having a primary particle size of 0.5 µm or less, the slurry having a viscosity of 20 mPa·s or less at 25°C.
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
B01J 37/02 - Impregnation, coating or precipitation
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
A heat exchanger includes: a stack formed by stacking a plurality of tubes through which gas flow; a tubular inner tank in which the stack is housed; and a tubular outer tank that is mounted on the outside of the inner tank so as to define an inner space between the outer tank and an outer peripheral surface of the inner tank. Each of both end portions of the tubes has a thickness greater than each of middle portions of the tubes. The both end portions of the tubes adjacent to each other in the stack are joined together so as to form a clearance between the middle portions of the adjacent tubes in the stack. Outer peripheries of both end portions of the stack are joined to an inner peripheral surface of the inner tank. An introduction hole for introducing a cooling medium is formed in the outer tank.
F02M 26/29 - Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
F28F 9/013 - Auxiliary supports for elements for tubes or tube-assemblies
15.
EXHAUST GAS TREATMENT SYSTEM AND EXHAUST GAS PURIFICATION METHOD
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
The present invention is directed to solve problems in conventional HC-SCR systems and provide cost-effective exhaust gas treatment systems with high NOx removal rates especially at low temperatures. A hydrocarbon selective catalytic reduction (HC-SCR) system in which H2 is added to a diesel oxidation catalyst (DOC) along with hydrocarbon. In other words, it can be said as an exchange gas purification method including removing NOx from an exhaust gas by adding H2 to a diesel oxidation catalyst (DOC) along with hydrocarbon in a hydrocarbon selective catalytic reduction (HC-SCR) system.
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 3/035 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
In this exhaust gas purification device 1, a first flow passage, which communicates with an exhaust gas flow inlet GI and has a DOC and a DPF, and a second flow passage 3, which has SCRs 31,32, are disposed in a folded-back manner via a communication part 5, the communication part comprising: an upstream-side diffusion part 52 in which a dosing part 51 is disposed on the upstream side; a downstream-side diffusion part 54 in which the second flow passage 3 is disposed on the downstream side; and a connection part 53 which establishes communication between the upstream-side diffusion part 52 and the downstream-side diffusion part 54. Due to this configuration, elongation of the overall device can be prevented while ensuring the distance between the dosing part 51 and the SCR 31, sufficient mixing of the exhaust gas with a reducing agent can be achieved, and the exhaust gas purification efficiency can be improved.
In this exhaust gas purification device 1, an introduction part 20 for diffusing exhaust gas in the radial direction of a DOC 21 is disposed to an upstream side of the DOC 21 in a flow passage 2. The introduction part 20 includes: a flow inlet GI into which exhaust gas flows from the side relative to the flow passage 2; and an overhang part 20b that covers an exhaust gas inflow-side end surface of the DOC 21. The flow inlet GI forms a shape that widens toward a connection end part 20a on the DOC 21 side of the overhang part 20b up to a position near the outer periphery of the DOC 21. An area of the overhang part 20b facing the DOC 21 forms a shape that expands toward the outside of a casing 4, which is the side opposite the DOC 21. In the inside of the introduction part 20, a baffle 201, in which a plurality of punching holes 201a are formed on one surface facing the flow inlet GI side, is provided along the outer diameter of the DOC 21. Due to this configuration, exhaust gas can be uniformly introduced to a catalyst with a simple configuration, and exhaust gas purification performance can be sufficiently achieved.
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
This exhaust gas purification device 1 comprises: flow passages 2,3 that communicate with an exhaust gas flow inlet GI; and a casing 4 that accommodates the flow passages 2,3 and that is provided with an exhaust gas discharge outlet GO at an arbitrary position. Each flow passage 2,3 includes: a DOC 21; a DPF 22 disposed to the downstream side of the DOC; and SCRs 31,32 disposed to the downstream side of the DPF. Exhaust gas discharged from the flow passage 3 is circulated and filled in an air layer X that is formed between an inner wall of the casing 4 and the flow passages 2,3. Due to this configuration, in the exhaust gas purification device 1, an increase in the structural complexity can be avoided and excellent heat insulation and heat retention can be achieved.
A lower partition wall having a through hole vertically penetrates the lower partition wall center. A spindle is inserted into the through hole. The top surface side of the lower partition wall includes a convex portion, a groove, and a drain hole. The convex portion is concentrically disposed at the through hole periphery. The groove extends, from an outer peripheral side of the convex portion, toward the through hole on an inner peripheral side. The drain hole is outside the convex portion, vertically penetrating the lower partition wall. The separated oil circles a top surface of the lower partition wall. The oil flowing to an inner peripheral side of the lower partition wall is guided to the groove and flows into the through hole. The oil flowing to an outer peripheral side of the lower partition wall flows into the drain hole.
B01D 46/18 - Particle separators, e.g. dust precipitators, using filtering belts
F01M 13/04 - Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
B01D 45/14 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
B04B 5/12 - Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers
B04B 1/04 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
Provided is a heat exchange device configured to prevent a cooling medium from stagnating. This heat exchange device 1 comprises: a stack 19 formed by stacking a plurality of tubes 10 on each other, the tubes 10 allowing gas to flow therethrough; a cylindrical inner tank 20 for containing the stack 19 therein; and a cylindrical outer tank 50 mounted over the inner tank 20 and defining an internal space 55 between the outer tank 50 and the outer peripheral surface of the inner tank 20. The opposite ends 11, 12 of each of adjacent tubes 10 are joined, a gap 91 is formed between the center portions 13 of the adjacent tubes 10, the outer peripheries of both ends of the stack 19 are joined to the inner peripheral surface of the inner tank 20, an introduction hole 51 through which a cooling medium is introduced is formed in the outer tank 50, a discharge hole 29 through which a cooling medium is discharged is formed in the inner tank 20 at a position between the opposite ends 11, 12 of the tubes 10, and communication holes in communication with both the gap 91 and the internal space 55 are formed in both side surfaces of the inner tank 20 within the outer tank 50.
F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
F02M 26/29 - Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
F28F 9/013 - Auxiliary supports for elements for tubes or tube-assemblies
An oil separator separating mist oil from processing-target gas includes: a case, a first partition wall and a lower, second partition wall, both partitioning vertically an internal space of the case; a partition dividing a space between the first and second partition walls into an introduction path and a first chamber; a supply hole vertically penetrating the second partition wall from the introduction path to a separation chamber; a communication hole vertically penetrating the second partition wall from the first chamber to the separation chamber; a rotor in the separation chamber; a center-side space in a center part of the rotor, the center-side space communicating with the supply hole through an open, upper part of the center-side space. The rotor separates the mist oil from the processing-target gas flowing from the center-side space to an outer periphery of the rotor, where the separated oil is emitted. The processing-target gas flows into the first chamber through the communication hole.
F01M 13/04 - Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
B01D 45/12 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
B01D 45/14 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
B04B 11/02 - Continuous feeding or dischargingControl arrangements therefor
An oil separator that separates mist oil from processing-target gas containing mist liquid includes a plurality of separation disks. The plurality of separation disks rotate around an axis, and are stacked and spaced in an axial direction. The separation disk includes an inner peripheral part and an outer peripheral part. The inner peripheral part forms a surface of a frustum of a hypothetical cone or pyramid coaxial with the separation disk, and is inclined with respect to a radial direction toward one side in an axial direction. The outer peripheral part forms a surface of a frustum of a hypothetical cone or pyramid coaxial with the separation disk, and continuously extends outward from an outer peripheral edge of the inner peripheral part. The outer peripheral part is inclined with respect to the radial direction toward another side in the axial direction.
B04B 5/08 - Centrifuges for separating predominantly gaseous mixtures
F01M 13/04 - Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
B01D 45/12 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
B01D 45/14 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
B04B 5/12 - Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers
An oil mist filter includes: a filter body having a tubular shape, the filter body causing processing-target gas supplied to a hollow in the filter body pass through an outer peripheral surface to capture oil mist contained in the processing-target gas; and an end plate disposed at one end surface of the filter body the end plate projecting outward beyond an outer peripheral edge of the one end surface of the filter body. A plurality of ventholes are formed at a portion of the end plate projecting beyond the outer peripheral edge of the one end surface of the filter body. The processing-target gas blown out from the outer peripheral surface of the filter body passes through the ventholes.
B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
The present invention is a separation disc group 61 obtained by forming, on first separation discs 63A, ribs 63a that extend radially from the center of rotation in a first direction that is slanted in one direction of the direction of rotation and forming, on second separation discs 63B, ribs 63b that extend in a second direction that is slanted in the opposite direction of the direction of rotation from the one direction, and stacking said first and second separation discs 63A and 63B alternately in the axial direction of a spindle 52, wherein the ribs 63a and ribs 63b that are adjacent to each other can be stacked vertically so as to intersect in at least one place, thereby increasing rigidity in the vertical direction during rotation, and balancing the stacked separation discs 63 as a whole. Since it is also possible to maintain uniform clearances between the separation discs 63A and 63B that are adjacent to each other in the vertical direction, it is possible to prevent reduction in separation efficiency and to limit the resistance applied on the gas flow.
A rotor separates oil mist from a target gas. This rotor includes a separation disk group having separation disks including a plurality of truncated cone shape plate members layered. The separation disk group includes a first space (hollow part with attachment opening) and a second space (gaps between separation disks), the first space formed on a rotation center side of the rotor and the second space formed between separation disks that are laid over and in communication with the first space. The first space contains an oil introducing portion (gap between the upper end of the spindle and the upper side sealing member). Target gas is introduced into the first space, target gas and oil introduced from the oil introducing portion are made to flow from the first space to the second space to be discharged outward from an outer peripheral edge of the separation disk group, while rotating the rotor.
B01D 45/14 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
B01F 3/04 - Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed gases or vapours with liquids
B04B 5/12 - Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers
B01D 47/00 - Separating dispersed particles from gases, air or vapours by liquid as separating agent
B04B 1/08 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
B04B 7/14 - Inserts, e.g. armouring plates for separating walls of conical shape
B01D 47/02 - Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
An oil separator includes a cylindrical housing that accommodates a rotor and is provided with a gas discharge portion (first exhaust portion), the oil separator being configured to introduce target gas from a rotation center side of the rotor to condense oil mist and emit condensed oil from an outer peripheral edge of the rotor and further being configured to discharge from the housing through the gas discharge portion the blow-by gas (target gas) after having the oil mist separated. The oil separator includes a dome portion (sectioning member) that covers from an outside of the housing the gas discharge portion and sections a closed space around the gas discharge portion and an outlet pipe (second exhaust portion) that is provided to the dome portion and that discharges the blow-by gas from the closed space that is sectioned by the dome portion.
B01D 45/14 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
B04B 5/12 - Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers
B01D 45/12 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
B04B 1/08 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
B04B 7/14 - Inserts, e.g. armouring plates for separating walls of conical shape
F01M 13/04 - Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
By eliminating a through-hole that was provided to the central side of a lower holder 72 in a rotor 60, a decrease in separation efficiency can be avoided without sucking in large drops of mist, which are not present at low temperatures, even when oily smoke produced at high temperatures is sucked in. By providing a first partition 31b to the upper face side of a lower partition member 31, an inner wall face 22f of a case 22 is made to hang at a gap 43a in the outer periphery of the lower part of the rotor 60, which serves as a way out for blow-by gas having an ultrahigh flow-rate, oil to be discharged is prevented from being dragged around by a swirling flow caused by the rotation of the rotor 60 and is prevented from accumulating at the inner wall face 22f of the case 22. As a result, oil heading downward and gas heading in the opposite direction can pass one another without interfering with one another, such that a continuous discharge of oil toward a lower case 21 from a separation chamber 43 containing the rotor 60 is enabled, and oil-sinking of the rotor 60 can be prevented by preventing oil from collecting in the separation chamber 43.
B04B 1/08 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
B01D 45/14 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
F01M 13/04 - Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
An inner wall face 22f of a case 22, which houses a separation chamber 43 containing a rotor 60, is provided with a plurality of recesses 22g, which are disposed adjacently in the inner peripheral direction of the inner wall face 22f and are each formed so as to extend vertically, such that a vertical groove 22h can be provided between adjacent recesses 22g, 22g. The groove 22h collects oil separated by the rotation of the rotor 60. The collected oil is guided by capillary action along the groove 22h so as to drip toward the lower part of the inner space in which the separation chamber 43 is housed, without being affected by a swirling flow caused by the rotation of the rotor 60. As a result, the post-separation oil is prevented from forming an oil film on the inner wall face 22f of the case 22 housing the separation chamber 43, and the oil is prevented from being carried away by the swirling flow caused by the rotation of the rotor 60.
B04B 1/08 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
B01D 45/14 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
F01M 13/04 - Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
Provided is a plasma reactor which is capable of reliably producing a plasma even in cases where water has flowed into the plasma reactor. A plasma reactor according to the present invention is provided with a plasma panel laminate 20, electrical conduction members 51, 54, a case and a mat 71. The plasma panel laminate 20 has a structure wherein electrode panels 30 are laminated, and produces a plasma when a voltage is applied between electrode panels 30 adjacent to each other. The electrical conduction members 51, 54 are electrically connected to discharge electrodes of the electrode panels 30. The plasma panel laminate 20 is contained within the case. The mat 71 is interposed between the case and the plasma panel laminate 20, and affixes the plasma panel laminate 20 to the case. In this connection, the mat 71 is arranged apart from the electrical conduction members 51, 54, so that spaces S1, S2 are present between itself and the electrical conduction members 51, 54.
B01J 19/08 - Processes employing the direct application of electric or wave energy, or particle radiationApparatus therefor
B01D 53/92 - Chemical or biological purification of waste gases of engine exhaust gases
F01N 3/028 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating using microwaves
B01D 46/18 - Particle separators, e.g. dust precipitators, using filtering belts
B01D 45/14 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
B01D 45/12 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
F01M 13/04 - Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
In an oil separator that separates mist oil contained in target gas from the gas, the present disclosure is aimed to easily mount the oil separator to various targets and to increase its versatility. An oil separator according to the present disclosure includes: a nozzle that injects oil from an injection hole to rotate a spindle around an axis; a housing having a gas communicating portion and an oil communicating portion on its bottom; and a joint member that is removably mounted to the housing, and that includes a gas introducing portion and an oil discharge portion, the gas introducing portion introducing blow-by gas and transferring the gas to the gas communicating portion, the oil discharge portion receiving oil from the oil communicating portion and discharging the oil to outside.
B01D 45/00 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
B01D 45/14 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
F01M 13/04 - Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
The present invention is provided with, on the upper surface side of a lower partition wall member 31 having a through hole 31a that vertically penetrates the center and through which a spindle is to be inserted, protruding sections 31h formed concentrically around the through hole 31a, groove sections 31i formed from the outer peripheral side of the protruding sections 31h toward the through hole 31a on the inner peripheral side, and drain holes 31b that vertically penetrate the lower partition wall member 31 at positions on the outer peripheral side of the protruding sections 31h. Within the separated oil that drips down and moves with a circling motion on the upper surface of the lower partition wall member 31 as a result of rotational flow caused by rotation of a rotor 60, the oil that flows on the inner peripheral side of the lower partition wall member 31 is guided by the groove sections 31i and flows into the through hole 31a, and the oil that flows on the outer peripheral side of the lower partition wall member 31 flows into the drain holes 31b. As a result, oil can be continuously discharged even when a large quantity of oil flows in temporarily, and oil can be stably discharged even when the oil separator 2 is tilted.
B04B 1/04 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
The present invention addresses the problem of preventing oil droplets from being sent downstream. An oil mist filter 10 is provided with: a filter body 11 provided cylindrically and configured so that gas to be treated which is supplied to the hollow of the filter body 11 is caused to flow to the outer peripheral surface of the filter body 11 to collect oil mist contained in the gas to be treated; and an end plate 12 provided to one end surface of the filter body 11 and protruding outward from the outer peripheral edge of the one end surface of the filter body 11. A plurality of air passage holes 12d are formed in the portion of the end plate 12, which protrudes from the outer peripheral edge of the one end surface of the filter body 11, and gas to be treated which blows out from the outer peripheral surface of the filter body 11 flows through the air passage hole 12d.
The present invention addresses the problem of suppressing oil that has been separated from a gas to be treated by means of a rotor from being discharged along with the gas to be treated. This oil separator 2, which separates a mist-like oil from a gas to be treated that includes the mist-like oil, is provided with: a case 22; a first partition wall portion 22a that vertically partitions the interior space of the case 22; a second partition wall portion 32 that vertically partitions a space, within the interior space of the case 22, that is below the first partition wall portion 22a; a dividing portion 22c that divides the space between the first partition wall portion 22a and the second partition wall portion 32 into an introduction path 41 and a first chamber 42; a supply hole 32a that passes vertically through the second partition wall portion 32 from the introduction path 41 to a separation chamber 43; a communicating hole 32c that passes vertically through the second partition wall portion 42 from the first chamber 42 to the separation chamber 43; a rotor 60 that is accommodated in the separation chamber 43; and a center-side space 62 that is formed in a center portion of the rotor 60, is open on the top side, and communicates with the supply hole 32a.
The present invention addresses the problem of suppressing stacking height in spite of an increase in the number of stacked separation disks, enabling a compact oil separator design, and preventing a deterioration in separation efficiency. This oil separator 2, which separates a mist-like oil from a gas to be processed that includes a mist-like liquid, is provided with a plurality of separation disks 63 that rotate around an axis and are stacked at intervals in an axial direction. The separation disks 63 are provided with: an inner periphery-side portion 65 that is provided in a conical-surface plate shape around the axis and is inclined to one axial side relative to the radial direction; and an outer periphery-side portion 64 that continues outward from the outer peripheral edge of the inner periphery-side portion 65, is provided in a conical-surface plate shape around the axis, and is inclined to the other axial side relative to the radial direction.
The purpose of the present invention is to increase elimination efficiency for oil included in gas to be processed in an oil separator for separating the mist-state oil, which is included in the gas being processed, from the gas. This oil separator (2) has a cylindrically shaped housing (11) wherein a rotor is accommodated and a gas discharge unit (24) (first exhaust unit) is provided. By introducing gas to be processed from the side of the center of rotation of the rotor, the mist-state oil is aggregated and released from the outer peripheral edge of the rotor. The blow-by gas (gas to be processed) after the separation of the mist-state oil is discharged from the housing (11) through the gas discharge unit (24). This oil separator (2) is characterized by having: a dome part (61) (defining member) that covers the gas discharge unit (24) from the outside of the housing (11) and defines the closed space at the periphery of the gas discharge unit (24); and an outlet pipe (62) (second exhaust unit) provided in the dome part (61) for discharging the blow-by gas from the closed space defined by the dome part (61).
B04B 1/08 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
B01D 45/12 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
B04B 7/14 - Inserts, e.g. armouring plates for separating walls of conical shape
F01M 13/04 - Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
38.
SEPARATION DISK FOR OIL SEPARATOR, ROTOR FOR OIL SEPARATOR, AND OIL SEPARATOR
The present invention addresses the problem of enhancing the efficiency of separation of mist-like oil from gas to be treated which contains the oil. The present invention provides a separation disk 51 used for an oil separator that is configured so that a rotor provided so as to be rotatable together with a spindle is rotated while gas to be treated and oil for separation are introduced in the inner peripheral space of the rotor, thereby separating mist-like oil from the gas to be treated, the separation disk 51 constituting a separation disk group 34 of the rotor. The separation disk 51 has: an outer peripheral portion 52 constituted by a plurality of sloped flat surfaces 53 extending in a tilted direction between the radial direction and the thrust direction; and an inner peripheral portion 54 located closer to the center of rotation than the outer peripheral portion 52. The separation disk 51 for an oil separator is characterized in that: the outer peripheral portion 52 is provided with a protrusion (point-like protrusion 57) that is in contact with another separation disk 51 adjacent, in a stack direction, to the separation disk 51 having the protrusion (point-like protrusion 57) thereon, thereby forming a separation space between the separation disks 51; and a ridge 56 extending in the tilted direction is provided at the boundary between a pair of adjacent sloped flat surfaces 53.
B01D 47/00 - Separating dispersed particles from gases, air or vapours by liquid as separating agent
B01D 45/14 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
B04B 7/14 - Inserts, e.g. armouring plates for separating walls of conical shape
F01M 13/04 - Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
An oil separator includes a plurality of separation discs rotatable together with a spindle and layered in an axis direction of the spindle, a nozzle that protrudes from a lower circumferential face of the spindle and configured to rotate the spindle by injection of an oil, a lower case has a gas inflow part into which blow-by gas flows, an oil discharge part into which an oil after separation is discharged, an upper case that sections together with the lower case a housing chamber in which spindle, separation discs and nozzle are housed, and a sectioning member that sections the housing chamber into a primary separation chamber, configured to primarily separate the oil mist, and a secondary separation chamber that secondarily separates the oil mist included in the gas after primary separation, and forms between the nozzle and the separation discs a communication opening that guides the gas being treated.
B01D 45/00 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
B01D 45/14 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
B01D 45/12 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
The purpose of the present invention is to increase separation efficiency in the separation from gas of an oil mist contained in a gas being treated. In order to achieve this, a rotor 31 is used which separates oil mist from the gas being treated (blow-by gas). The rotor 31 is provided with a disc separator group comprising multiple stacked disc separators 34 which are frustum-shaped plate members. The disc separator group comprises a first space (a hollow portion formed by an attachment opening 34a) formed towards the rotational center of the rotor 31, and a second space (gaps between the disc separators 34) formed between the stacked disc separators 34 and in communication with the first space. In the first space, an oil inlet (a gap between the top end of a spindle 32 and an upper seal member 42) for introducing oil is provided. Further, in a state in which the rotor 31 has been rotated, oil is introduced from the oil inlet and the gas being treated is introduced into the first space, the gas being treated flows from the first space into the second space together with the oil introduced from the oil inlet, and is discharged from the outer edge of the disc separator group to the outside.
B01D 47/00 - Separating dispersed particles from gases, air or vapours by liquid as separating agent
B01D 45/14 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
B04B 1/08 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
B04B 7/14 - Inserts, e.g. armouring plates for separating walls of conical shape
The purpose of the present invention is to increase separation efficiency in the separation from gas of an oil mist contained in a gas being treated. In order to achieve this, a rotor 31 is used which separates oil mist from the gas being treated (blow-by gas). The rotor 31 is provided with a disc separator group comprising multiple stacked disc separators 34 which are frustum-shaped plate members. An oil inlet (a gap between the top end of a spindle 32 and an upper seal member 42) is arranged in an inner peripheral space (a hollow portion formed by an attachment opening 34a) formed towards the rotational center from the rotor 31. A cleaning oil is introduced from the oil inlet, the gas being treated is introduced into the inner peripheral space, the gas being treated flows together with the oil introduced from the oil inlet into the gaps between the disc separators, and is discharged from the outer peripheral edge of the disc separator group to the outside. The discharged oil collides with a cylindrical wall portion (the outer peripheral part 43 of a dividing member 28) arranged in a state surrounding the outer periphery of the rotor 31.
B01D 47/00 - Separating dispersed particles from gases, air or vapours by liquid as separating agent
B01D 45/14 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
B04B 1/08 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
B04B 7/14 - Inserts, e.g. armouring plates for separating walls of conical shape
The purpose of the present invention is to increase separation efficiency for oil mist included in gas being processed while reducing the weight of separation discs in an oil separator for separating the mist-state oil, which is included in the gas being processed, from the gas. This oil separator has a rotor. This rotor has a plurality of separation disks (34 (61, 62)) stacked in the direction of the axial line of a spindle. Each of the separation disks (34) is constituted of a plate shaped member with a truncated conical shape, and also indented and protruding ribs (64, 65) that extend in the radial direction from the center of rotation are formed on the outer peripheral parts (61b, 62b) that correspond to the inclined surface of the truncated cone. The indented and protruding ribs (64, 65) have a first protruding parts (66) such that the front surface side of the outer peripheral parts (61b, 62b) protrudes and the back surface side thereof is indented and second protruding parts (67) such that the back surface side of the outer peripheral parts (61b, 62b) protrudes and the front surface side thereof is indented.
B04B 1/08 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
B01D 45/14 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
B04B 7/14 - Inserts, e.g. armouring plates for separating walls of conical shape
F01M 13/04 - Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
The purpose of the present invention is to minimize oil rippling caused by gas that has been led in and to maintain a high level of gas purification performance, even when an oil separator is inclined. This oil separator (2) has: a plurality of separation discs (34) provided to be capable of rotating with a spindle (32), the separation discs being stacked on the spindle; a nozzle (37) for rotating the spindle by spraying oil; a cylindrical member (17) for leading in a blow-by gas; a lower case (12) provided with a communication cylinder (16) for discharging separated oil; an upper case (13) attached to the lower case from above, the upper case forming an accommodation chamber; and a dividing member (27) for dividing the accommodation chamber into a lower accommodation chamber and an upper accommodation chamber, and forming a communication port (43) in the periphery of the spindle at a height between the nozzle and the separation discs, the communication port guiding the blow-by gas. The inlet entrance for the blow-by gas in the cylindrical member (17) faces the outside of the lower case, and the inlet exit faces the lower vicinity of the nozzle.
B04B 1/08 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
B01D 45/12 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
B04B 11/02 - Continuous feeding or dischargingControl arrangements therefor
F01M 13/04 - Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
The purpose of the present invention is to provide an oil separator for separating misted oil contained in a gas to be treated from the gas, wherein the oil separator can easily be attached even to various attachments, and the oil separator has a wide range of use. This oil separator (2) has: a nozzle (31) for rotating a spindle (26) about an axis by spraying oil from a spray hole (33); a housing (11) having a gas communication part (53), an oil communication part (54), or the like provided in a bottom part (51); and a joint member (14) removably attached to the housing (11), the joint member being provided with a gas inlet part (57) for letting in a blow-by gas and sending the gas to the gas communication part (53), and an oil discharge part (58) for taking in oil from the oil communication part (54) and discharging the oil to the exterior.
B04B 1/08 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
B01D 45/12 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
The purpose of the present invention is to more efficiently remove oil contained in a gas being treated in an oil separator. This oil separator (2) has: a plurality of separation discs provided to be capable of rotating with a spindle, the separation discs being stacked in the axial direction of the spindle; a nozzle for rotating the spindle about an axis by spraying oil from a spray hole, the nozzle protruding from the peripheral surface of the spindle below the separation discs; and a housing (11) configured to include a cylindrical side wall part, the housing (11) dividing an accommodation chamber that accommodates the spindle, the separation discs, and the nozzle. This oil separator (2) is characterized in that a plurality of vertical ribs (24) extending upward and downward are formed in the circumferential direction in the inner surface of a main cover (22) (side wall part).
B04B 1/08 - Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
B01D 45/12 - Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
A purpose of the present invention is to improve the oil removal rate in an oil separator that separates and removes oil from gas including the oil as an impurity. The oil separator according to the present invention is characterized by including a first filter member (42) in a cylindrical shape made with a cylindrical filter material having an air permeability, and positioned such that the target gas flows in from a hollow part as well as a central axis is in an up-down direction, and a second filter member (43) made with a filter material having air permeability and wrapped around the first filter member (42) along an outer surface thereof with a predetermined spacing from the outer surface of the first filter member (42).
[Problem] To improve separation efficiency while achieving a reduction in size, in an oil separator for separating mist-like oil included in a blow-by gas, from the gas. [Solution] The present invention is provided with: a plurality of separation disks which are provided so as to be capable of rotating with a spindle, and which are stacked in an axial direction of the spindle; a nozzle which extends from a lower peripheral surface of the spindle, and which rotates the spindle by ejecting oil; a lower-side case having, provided therein, a gas inflow part into which a blow-by gas flows, and an oil discharge part through which separated oil is discharged; an upper-side case which, along with the lower-side case, demarcates an accommodation chamber having, accommodated therein, the spindle, the separation disks, and the nozzle; and a partition member for partitioning the accommodation chamber into a primary separation chamber in which primary separation is performed with respect to mist-like oil, and a secondary separation chamber in which secondary separation is performed with respect to mist-like oil included in a gas to be processed that has been subjected to primary separation, said partition member forming, in a space between the nozzle and the separation disks, a communication port for guiding the gas to be processed.
[Problem] To reduce the size of an oil separator for separating a mist-like oil included in a blow-by gas, from the gas. [Solution] The present invention is provided with: a rotor unit which uses rotation to separate mist-like oil; a lower-side case having, provided therein, a gas inflow part into which a blow-by gas flows, and an oil discharge part through which separated oil is discharged; an upper-side case which is fitted to the lower-side case from above, which, along with the lower-side case, demarcates an accommodation chamber having the rotor unit accommodated therein, and which has, provided to an upper end thereof, a gas discharge part for discharging the blow-by gas having had the mist-like oil separated therefrom; and a PCV valve provided to an upper part of the upper-side case.
There is provided a filter device for gas including: a cylindrical filter case formed to be airtight; a hollow filter which is formed with an opening in a bottom part thereof, a top part of which is obstructed, and which is placed inside the filter case in such a manner that a central axis thereof substantially aligns with a central axis of the filter case; and a flow controlling plate which is attached roundly between an outlet in the top part of the filter case and the top part of the hollow filter on an inner peripheral wall of the filter case, wherein gas introduced through an inlet in a bottom part of the filter case is introduced into a hollow part of the hollow filter, and also passes through a space between an outer periphery of the hollow filter and the inner peripheral wall of the filter case, and then is discharged through the outlet.
The purpose of the present invention is to increase elimination efficiency for oil in an oil separator that separates and eliminates oil from gas containing oil as an impurity. This oil separator is characterized by having a cylindrical first filter member (42) that is fabricated from cylindrical filter material having air permeability and is disposed such that a target gas flows in from the hollow part thereof and also such that the center axis thereof is in the vertical direction and a second filter member (43) that is fabricated from filter material having air permeability and surrounds the outside surface of the first filter member (42) with a prescribed gap from the outside surface of the first filter member (42).
[Problem to be Solved]
To enhance the performance for separation of oil mist from blow-by gas.
[Solution]
A filter element 13 which is to be attached to an oil separator unit 3 includes a core 31. This core is a double tube having an internal cylindrical member 34 and an external cylindrical member 35, and a space between the internal cylindrical member and the external cylindrical member is used as a separation chamber 36. An injection hole 39 for injecting blow-by gas while increasing its flow velocity is provided in the internal cylindrical member. A surface which is an inner wall surface of the external cylindrical member and which faces the injection hole is a spraying surface onto which the blow-by gas injected from the injection hole is sprayed. Moreover, an opening for oil discharge from which oil OL condensed on the spraying surface is discharged, and an opening for discharge from which the blow-by gas from which oil mist has been separated is discharged are provided in the core.
In order to increase the capacity for separating oil mist from a blow-by gas, a filter element (13) mounted on an oil separator unit (3) is provided with a core (31). The core is a double cylinder comprising an inner cylinder member (34) and an outer cylinder member (35), and a space between the inner cylinder member and the outer cylinder member is used as a separation chamber (36). Nozzles (39) that increase the flow velocity of and emit the blow-by gas are provided to the inner cylinder member. A section facing the nozzles, which is the inner wall of the external cylinder member, is used as a spray surface on which the blow-by gas emitted from the nozzles is sprayed. The core is provided with an oil discharge opening where the oil (OL) that condenses at the spray surface is discharged, and a discharge opening where the blow-by gas is discharged after the oil mist has been separated therefrom.
Disclosed are an oil filter and filter element which make it possible for oil to be reliably drained to a drainage passage when a filer element is replaced etc. An oil filter (1) comprises a housing (5) and a cap member (6) which form a space accommodating a filter element (7). A locking part (23) which locks the filter element is disposed in the cap member. A communicating part (11) connected to an inner circumferential space of the filter element, a ring-shaped drainage groove part (12) surrounding the communicating part, and a ring-shaped inflow-side groove part (13) surrounding the drainage groove part are disposed in the bottom part of the housing. A gasket (35) is disposed in the bottom part of the filter element and comes into contact with a partition wall (14) to control flow of pre-filtering oil to the drainage groove part. When the cap member is taken out of the housing, the filter element and the cap member are moved together by means of the locking part, and the pre-filtering oil is drained from a gap between the gasket and the partition wall into the drainage groove part.
a), and a bag-like body (13) in which activated charcoal (14) is contained is disposed in the space formed by the peripheral wall of the vent pipe (11) and the inner wall of the cover (12).
b is formed in each low temperature fluid compartment 60. The low temperature fluid flows each of the low temperature fluid compartments 60 along a U-turn path that is not short in length.
F28D 9/00 - Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
F28F 3/04 - Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
In a plate laminate type heat exchanger a plurality of groove-like protrusions is formed on one side of each of flat core plates, and the protrusions extend substantially in parallel to one another from one end side in the longitudinal direction of the plate toward the other end side in the longitudinal direction of the plate, form a U-turn region in an area on the other end side in the longitudinal direction of the plate, and return to the one end side in the longitudinal direction of the plate. The plate is curved in such a way that ridges and valleys are formed on part of the plate, the area in which the protrusions are formed but the U-turn region is not formed, in the direction in which the plate is laminated and the ridges and valleys are repeated along the longitudinal direction. Both ends of each of the protrusions converge into an inlet port for high temperature fluid and an outlet port for high temperature fluid, respectively.
F28F 3/04 - Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
F28F 13/12 - Arrangements for modifying heat transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
Problem to be Solved
A plate laminate type heat exchanger having high heat exchange efficiency is provided.
Solution
b. A pair of core plates 53 and 54 is assembled in such a way that the side of the core plate 53 on which the protrusion 10 is not formed faces the side of the core plate 54 on which the protrusion 10 is not formed and the protrusions 10 and 10 formed on the respective core plates are paired but oriented in opposite directions. The pair of core plates 53 and 54 form a plurality of tubes surrounded by the walls of the protrusions 10 and 10, and the tubes form high temperature fluid compartments.
F28F 3/04 - Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
F28F 3/08 - Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
F28F 3/14 - Elements constructed in the shape of a hollow panel, e.g. with channels by separating portions of a pair of joined sheets to form channels, e.g. by inflation
F28F 13/06 - Arrangements for modifying heat transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
58.
EXHAUST GAS PURIFYING DEVICE FOR INTERNAL COMBUSTION ENGINE, AND SWIRL GENERATING DEVICE
An exhaust gas purifying device for an internal combustion engine, provided with a swirl generating means for generating a swirl which has a strong swirl force and applying reduced resistance to the swirl. A swirl generating device for generating a swirl which has a strong swirl force and applying reduced resistance to the swirl is also provided. An exhaust gas purifying device (100) for an internal combustion engine is provided with an exhaust pipe (1), a reduction catalyst (2), a reducing agent supply means (3), and a swirl generating means (40). The swirl generating means (40) has two blades (410, 420) formed by dividing a substantially elliptic plate into two in the direction of the major axis thereof. The two blades (410, 420) are integrated together such that the two blades are rotated relative to each other about the minor axis of the plate so as to cross each other, and the two blades are mounted such that the direction of the major axis is parallel to the direction of flow of exhaust gas.
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
B01F 5/00 - Flow mixers; Mixers for falling materials, e.g. solid particles
B04C 3/00 - Apparatus in which the axial direction of the vortex remains unchanged
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
F01N 3/36 - Arrangements for supply of additional fuel
59.
SOUND-DEADENING STRUCTURE OF VENT TUBE AND SOUND-DEADENING STRUCTURE OF CASE
A sound-deadening structure of vent tube and sound-deadening structure of case that realize not only deadening of sound in a wide frequency region but also prevention of any deterioration of ventilation resistance in the vent tube and case. A venthole (11a) is provided on the circumferential wall of a vent tube (11). The circumferential wall of the vent tube (11) is provided with a cover (12) disposed so as to cover the venthole (11a). A baglike body (13) filled with an active carbon (14) is disposed in the space defined by the circumferential wall of the vent tube (11) and the internal wall of the cover (12).
This object aims to provide a muffling structure of a vent pipe and a muffling structure of a case, which is capable of muffling in a wide frequency range and preventing vent resistance in the air pipe or the case from deterioration. Vent holes (11a) are formed in the peripheral wall of the vent pipe (11), a cover (12) is so provided on the peripheral wall of the vent pipe (11) as to cover the vent holes (11a), and a bag-like body (13) in which activated charcoal (14) is contained is disposed in the space formed by the peripheral wall of the vent pipe (11) and the inner wall of the cover (12).
An exhaust purification device in which the difference in thermal expansion between the particulate filter side and the selective reduction type catalyst side can be reliably absorbed without causing deposition of urea. An exhaust purification device has a communication flow path (9) having an S-shaped structure and is constructed so that an aqueous urea solution can be added to the upstream of the communication flow path (9). The communication flow path (9) has a particulate filter (5) and a selective reduction type catalyst arranged parallel to each other such that the entrance ends of the filter and the catalyst face the same direction and such that exhaust gas (3) discharged from the exit end of the particulate filter (5) is turned back in the opposite direction to lead the gas to the entrance end of the adjacent selective reduction type catalyst. The middle of a mixing pipe (10) forming a straight portion of the communication flow path (9) is constructed as a double-walled tube portion (18) where an inner tube (16) and an outer tube (17) are overlapped on each other in an insertable and extractable manner. The tail end of the outer tube (17) is secured to the outer periphery of the inner tube (16), a bellows (19) stretchable and retractable in the axial direction is formed at an appropriate position of the outer tube (17), and a seal ring (20) is fitted on the outer periphery of the tail end of the inner tube (16).
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
F01N 13/08 - Other arrangements or adaptations of exhaust conduits
F01N 3/02 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
F01N 3/08 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
62.
EXHAUST AIR PURIFIER EQUIPMENT AND METHOD FOR PURIFYING EXHAUST AIR
As various operating statuses, exhaust air pressure P, exhaust air temperature TU and TD at the upstream and downstream of DPF, rotating speed Ne, load Q, and intake air flow rate F are each read to acquire the amount of PM arising during a minimal time period Δt, and the value obtained by adding the acquired amount to the amount m of accumulated PM is made an initial amount of accumulation. Further, exhaust air property and spatial velocity SV are obtained from the various operating statuses, and the amount m of accumulated PM after elapse of the minimal time period Δt is estimated from an equation for estimating the amount of accumulated PM: m=m*exp(-B*Δt) derived in consideration of determined exhaust air property and spatial velocity SV. Subsequently, if the amount m of accumulated PM is not less than a specified value, the amount m of accumulated PM is reset to 0 after execution of forced regeneration process of the DPF.
F01N 3/02 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
B01D 46/42 - Auxiliary equipment or operation thereof
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
Provided is a plate stacking type heat exchanger including plates of smaller longitudinal dimensions. In the plate stacking type heat exchanger (100), both of an inlet port (59a) and an outlet port (59b) for a low temperature fluid are provided on the longitudinal one end of each of the plates (left end side in Fig. 1). A partition part is formed in each low-temperature fluid chamber (60) by partition members (10a), (10b). The low temperature fluid can flow in the chamber (60) while forming U-turns without flowing along a short path between the ports (59a, 59b).
F28F 3/02 - Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
F28D 9/02 - Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the heat-exchange media travelling at an angle to one another
64.
PROCESS FOR PRODUCING CATALYST FOR EXHAUST GAS PURIFICATION AND CATALYST FOR EXHAUST GAS PURIFICATION
A process for producing a catalyst for exhaust gas purification, in which without inviting of any strength decrease of the catalyst for exhaust gas purification and without markedly increasing of the production cost of the catalyst for exhaust gas purification, the area brought into contact with an exhaust gas can be increased to thereby attain an enhancement of exhaust gas purification efficiency; and a thus produced catalyst for exhaust gas purification. There is disclosed a process for producing a catalyst for exhaust gas purification having a coating layer containing a catalyst component superimposed on a honeycomb support. The process is characterized by including immersing the honeycomb support in a thixotropic slurry containing the catalyst component, or causing the honeycomb support to suck the slurry thereinside; taking out the honeycomb support; blowing a pulsed air onto an end face of the taken honeycomb support in the axial direction thereof; and firing the honeycomb support to thereby provide the honeycomb support with a coating layer.
[PROBLEMS] Provided is a plate laminate type heat exchanger having high heat exchange efficiency. [MEANS FOR SOLVING PROBLEMS] In a plate laminate type heat exchanger (100), both end sides of a concavity (10) are collected to an inlet port (58a) for a high temperature fluid and an outlet port (58b) for the high temperature fluid. Further, in a group of a pair of core plates (53, 54), the two core plates (53, 54) make a pair in such a manner that other surface sides on which the convexity (10) is not formed are set to be face to face with each other and the concavities (10, 10) formed on the plates reversely make a pair. A plurality of pipes surrounded by the wall surfaces of the convexities (10, 10) are formed by use of the group of the pair of core plates (53, 54). A high temperature fluid room is constituted by the pipes.
F28F 3/08 - Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
F28D 9/00 - Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
F28F 3/04 - Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
[PROBLEMS] Provided is a plate laminate type heat exchanger having high heat exchange efficiency. [MEANS FOR SOLVING PROBLEMS] In a plate laminate type heat exchanger (100), in core plates (53, 54), a plurality of groove-like convexities (10) are formed on one surface side of a planar board like plate, the convexities (10) extend approximately in parallel with each other from one end side in the longitudinal direction of the plate to the other end side in the longitudinal direction of the plate, form a U turn in a region in the other end side in the longitudinal direction of the plate, and returns to the one end side in the longitudinal direction of the plate, and the plate is formed in a curved shape in such a manner that in a region in which the convexities (10) are formed of the plate except a region on which the U turn is formed, a mountain portion and a valley portion are formed in the lamination direction of the plate and the mountain portion and the valley portion are repeated in the longitudinal direction. Both end sides of the convexities (10) are collected to an inlet port (58a) for a high temperature fluid and an outlet port (58b) for the high temperature fluid. In a group (core (55)) of a pair of core plates (53, 54), the two core plates (53, 54) make a pair in such a manner that other surface sides which are sides opposite to the one surface sides are set to be face to face with each other and the concavities (10, 10) formed on the sides reversely make a pair.
F28F 3/08 - Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
F28D 9/00 - Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
F28F 3/04 - Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
67.
CATALYST, METHOD AND APPARATUS FOR PURIFYING NITROGEN OXIDE
Disclosed is a catalyst which is excellent in heat resistance and capable of efficiently purifying a nitrogen oxide. Also disclosed are a purifying method using the catalyst, and an apparatus comprising the catalyst. Specifically disclosed is a complex metal oxide containing tungsten, zirconium and cerium, wherein cerium oxide is contained in an amount of 10-30% by weight and tungsten oxide is contained in an amount of 5-14% by weight. This complex metal oxide is excellent in heat resistance and capable of efficiently purifying a nitrogen oxide in the presence of ammonia. Consequently, a catalyst containing a complex metal oxide containing tungsten oxide, zirconium oxide and cerium oxide, wherein the cerium oxide is contained in an amount of 10-30% by weight and the tungsten oxide is contained in an amount of 5-14% by weight, is useful for purification of a nitrogen oxide.
Disclosed is a complex oxide having excellent heat resistance, which is useful as a catalyst capable of purifying a nitrogen oxide in the presence of ammonia. Also disclosed are a method for producing such a complex oxide, a nitrogen oxide purifying catalyst containing the complex oxide as an active ingredient, a method for purifying a nitrogen oxide by using the nitrogen oxide purifying catalyst, and an apparatus comprising the catalyst. Specifically disclosed is a complex oxide containing cerium oxide, titanium oxide, zirconium oxide and a sulfuric acid radical (a sulfuric acid ion: SO42-), wherein the cerium oxide concentration is 15-30% by weight and the sulfuric acid radical concentration is not less than 1.6% by weight. This complex oxide is excellent in catalyst activity (ability to purify a nitrogen oxide in the presence of ammonia) and heat resistance. Consequently, the complex oxide composed of cerium oxide, titanium oxide, zirconium oxide and a sulfuric acid radical and having a cerium oxide concentration of 15-30% by weight and a sulfuric acid radical concentration of not less than 1.6% by weight is useful for purification of a nitrogen oxide.
A maintenance method for a particulate filter. The method can reliably remove combustion residuals by back wash air without using hot water etc. and with facility costs suppressed. Also, the method can prevent, in engine operation, exhaust pressure from increasing significantly and fuel consumption from deteriorating. To maintain the particulate filter (4), filling bodies (13) are placed in flow paths (8) whose exits are not sealed by plug bodies (9), thus reducing the internal volume of the flow paths (8), and then back wash air (12) is blown into the flow paths (8).
F01N 3/02 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
A reduction catalyst is placed in an exhaust passage of an engine, and a reducing agent added to an exhaust gas and NOx in the exhaust gas are reacted on the catalyst. A member for passing the exhaust gas added with the reducing agent is provided, and this member is formed by welding in the axial direction. This member is arranged so that the inner surface of the welded portion overhangs in the exhaust passage.
B01D 53/94 - Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
F01N 13/08 - Other arrangements or adaptations of exhaust conduits
F01N 3/24 - Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
patents
