269 results about "Labyrinth structure" patented technology

A heat exchanger includes a core comprising a single piece continuous boundary having a first surface defining a first labyrinth, and an opposing second surface defining a second labyrinth; a first inlet manifold connected to the first labyrinth and configured to supply a first fluid to the first labyrinth; and a second inlet manifold connected to the second labyrinth and configured to supply a second fluid to the second labyrinth; wherein the core comprises a plurality of identical three dimensional unit cell structures replicated in three orthogonal spatial dimensions.

An imaging apparatus includes: a three-dimensional substrate in which a partition wall (11) having an opening (10a) at a central portion is formed so as to cross an inner cavity; an optical filter (5) that is fixed on a first flat surface (12) of both surfaces of the partition wall so as to cover the opening; a semiconductor imaging device (4) that is face-down mounted on a second flat surface (13) of the partition wall with an imaging area (4a) facing the opening; and an optical system for forming images that is installed on a side of the optical filter in the inner cavity of the three-dimensional substrate. The opening of the partition wall is dosed on both sides with the optical filter and the semiconductor imaging device so as to form a cavity. An air passage (12a) for allowing communication between the cavity and an exterior of the three-dimensional substrate is formed on the first flat surface, and has a labyrinth structure that causes a flow rate of air passing through the air passage to vary depending on a location in the air passage. This allows air circulation between the exterior and a cavity enclosed by a semiconductor imaging device and an optical filter, while suppressing the entry of foreign matter from the exterior into the cavity via an airflow caused by expansion / contraction of air.

First and second chambers are coaxially arranged and have substantially the same cross sectional area. First and second activated charcoal masses are respectively received in the first and second chambers. A labyrinth structure is arranged between respective first ends of the first and second chambers. An atmospheric air inlet port is provided by a second end of the second chamber. A third chamber is arranged beside the coaxially arranged first and second chambers. The third chamber has a first end positioned near a second end of the first chamber and a second end positioned near the second end of the second chamber. A third activated charcoal mass is received in the third chamber. A connector passage extends between the second end of the first chamber and the first end of the third chamber to provide a fluid connection between the first and third chambers. A fuel vapor inlet port is provided by the second end of the third chamber, and a fuel vapor outlet port is also provided by the second end of the third chamber.

A capsule for preparation of a beverage in a beverage production machine that includes a body and a delivery wall forming a chamber containing an extractable beverage ingredient, The delivery wall has at least one outlet, an inner layer including at least one first orifice and an outer layer including at least a second orifice, with the first and second orifices extending in the axial direction of the capsule, The first and second layers are adjacent or the first and second layers are distant by a confined gap and when a gap is present, a labyrinth structure is provided which extends transversally in the gap between the first and second orifices.

An air cleaner is prevented from sucking mud etc., while a relatively large space is ensured in front of a seat, in an under bone type straddle type vehicle which has an area recessed downward in front of the seat. An air cleaner is disposed in the rear of a cylinder block of an engine. The air cleaner includes a cleaner case that is taller than it is broad and a lid that covers a top of the cleaner case. An intake pipe is positioned at a rear side of the lid. The intake pipe is disposed within a space surrounded by the seat and a forward descending portion of a seat front cover, and opens obliquely upward rearward. A labyrinth structure is formed above the intake pipe for preventing drops of water from entering the intake pipe from the seat.

The cooling air introducing port 24 is open to a lower portion of an axial direction end portion of the motor housing member 11, 12, the water-proof cover 25 for covering the cooling air introducing port 24 is attached to the outside of the axial direction end portion of the housing member 11, 12, and the air introducing passage 26 having a labyrinth structure is composed of the bent portion 25d provided in a lower end portion of the water-proof cover 25, the first wall face 21d provided in the annular portion 21b of the shroud and the second wall face 21e.

First and second chambers are coaxially arranged and have substantially the same cross sectional area. First and second activated charcoal masses are respectively received in the first and second chambers. A labyrinth structure is arranged between respective first ends of the first and second chambers. An atmospheric air inlet port is provided by a second end of the second chamber. A third chamber is arranged beside the coaxially arranged first and second chambers. The third chamber has a first end positioned near a second end of the first chamber and a second end positioned near the second end of the second chamber. A third activated charcoal mass is received in the third chamber. A connector passage extends between the second end of the first chamber and the first end of the third chamber to provide a fluid connection between the first and third chambers. A fuel vapor inlet port is provided by the second end of the third chamber, and a fuel vapor outlet port is also provided by the second end of the third chamber.

A bearing roller chain having a seal mechanism preventing entry of foreign substance from the outside, and leaking of lubricating oil leakage to the outside and the like, thereby improving wear resistance of the bearing roller and reducing both the likelihood of rotation failure and the traveling resistance of the chain. The seal mechanism is provided between an inner link plate of the chain and the hollow bearing roller, which has a plurality of internal anti-friction rollers rotatable between the hollow bearing roller and a bush mounted between opposed inner link plates. The seal mechanism encloses the internal anti-friction rollers and comprises two parts, i.e a seal ring having an annular lip portion, which comes into close contact with an outer side surface of the bearing roller and an annular metallic seal member. The metallic seal member forms a labyrinth structure by providing a flange on an outer circumferential portion which loosely enters an annular concave groove in the outer side surface of the bearing roller. The seal mechanism provides a double sealing effect by virtue of the seal ring and the annular metallic seal member.

A heat exchanger includes a core comprising a single piece continuous boundary having a first surface defining a first labyrinth, and an opposing second surface defining a second labyrinth; a first inlet manifold connected to the first labyrinth and configured to supply a first fluid to the first labyrinth; and a second inlet manifold connected to the second labyrinth and configured to supply a second fluid to the second labyrinth; wherein the core comprises a plurality of identical three dimensional unit cell structures replicated in three orthogonal spatial dimensions.

An improved fill valve has a pivot valve body that is pivotally suspended immediately below a float housing and is movable between two positions. In a first position, the pivot valve body blocks the flow of water from the float housing. In a second position, the pivot body allows the flow of water from the float housing. The pivot valve body has two top compartments, each separated from the other by a wall. The first compartment retains an amount of water in it. The second compartment functions as a water flow restriction apparatus and includes an upwardly-extending member for sealing off a check valve that is disposed within the bottom of the float housing. A pressure compensating drip emitter allows water to trickle into the float housing at a very slow rate. The emitter comprises a labyrinth structure having a plurality of serpentine pathways formed in its outer surface.

The invention discloses a point-shaped light scattering type smoke detector without an optical labyrinth, and a signal processing method. The point-shaped light scattering type smoke detector without the optical labyrinth comprises a photoelectric smoke detection part, a detection chamber (C), a filter screen (I), a signal processing unit (E), a housing (F), an alarm horn (G) and an indication lamp (H). According to the novel idea of the point-shaped light scattering type smoke detector without the optical labyrinth disclosed by the invention, the obstructions of smoke grains entering and exiting the detector are reduced, thus the flowing of smoke entering and exiting the chamber is smooth, and high response sensitivity and real-time performance are achieved. The function of the optical labyrinth structure is preventing an external environment light from entering the detection chamber, for this, the invention discloses a analysis and processing method for a signal containing functions of an environment light, a smoke and the like by virtue of an amplitude modulation and demodulation principle, provides an theoretical basis for the point-shaped light scattering type smoke detector without the labyrinth, and also provides a novel thought and research direction for research on improvement for the response sensitivity of the detector.

The invention relates to a labyrinth gas-oil separating structure in a valve cover of an engine and is characterized in that: a gas-oil separating chamber, which is jointly composed by an oil baffle base plate and the valve cover and is provided with a gas mixture inlet and an outlet of a ventilating pipe, is internally provided with a labyrinth structure which can prolong the detention time of the gas mixture in the gas-oil separating chamber and enlarge the contact area between the gas mixture and the inner wall of the separating chamber. The labyrinth gas-oil separating structure aims at simplifying the arrangement of a ventilating system and optimizing and modifying the structures of the valve cover and the oil baffle plate, thus forming an effective oil separating labyrinth and achieving the effect of independent arrangement of a gas-oil separating device; and the whole ventilating system of the engine becomes simpler and more effective.

A shaft type motorcycle includes a drive shaft for permitting a reduction in the vehicle weight. The shaft drive type motorcycle includes a gear box provided at a rear part of a swing arm with a bearing provided between the gear box and a rear wheel axle. The bearing includes an outer race and balls and an inner race operative provided to rotatably support the rear wheel axle. A presser flange is provided between the rear wheel axle and a rear wheel that includes a hollow cylindrical part pressing the inner race in the axial direction of the rear wheel axle. A flange part is provided as part of the presser flange to which a brake disc is mounted. A labyrinth structure is provided for making it difficult for oil from leaking out of the gear box.

The labyrinth capsule consists of a cup-shaped capsule (1), the capsule base of which is formed from a labyrinth plate (4) having a labyrinth structure and puncturing pins (14) on its upper side. A hole (10) with a central round stud (12) is located in the labyrinth plate center (5). A sealing film (7) is placed on the labyrinth plate (4) and is welded along its edge to the edge of the labyrinth plate (4). The capsule (1) is sealed on its upper edge (2) with a closure film, thereby closing in the filling. When liquid presses in through the closure film, the sealing film (7) is pressed against the labyrinth plate (4). The puncturing pins (14) puncture the sealing film (7). The liquid flows through the puncture holes and, thereafter, to the lower side of the labyrinth plate (4), to the labyrinth, and drains out between the labyrinth ridges (5). Finally, a laminar liquid stream is formed from the round stud (12) in the spout hole (10).

The invention relates to a high-voltage explosion-proof three-phase asynchronous motor. It includes a base cylinder, a front end cover, a rear end cover, a rotating shaft and a support. A high voltage junction box support and an auxiliary junction box support are arranged on the base cylinder. The inside of the matching part of the cover is respectively provided with a bearing inner cover and a matching labyrinth ring, which form a labyrinth-type flameproof joint surface structure; Flame-proof structure, its flame-proof length is 28-32mm, and the flame-proof gap is 0.05-0.07mm. The present invention has positive and beneficial effects: it can withstand the hydraulic pressure (explosion) pressure of 2.0Mpa; Chemical sites containing gases with huge explosive energy such as hydrogen and acetylene.

The cooling air introducing port 24 is open to a lower portion of an axial direction end portion of the motor housing member 11, 12, the water-proof cover 25 for covering the cooling air introducing port 24 is attached to the outside of the axial direction end portion of the housing member 11, 12, and the air introducing passage 26 having a labyrinth structure is composed of the bent portion 25d provided in a lower end portion of the water-proof cover 25, the first wall face 21d provided in the annular portion 21b of the shroud and the second wall face 21e.

The invention relates to the field of drying devices, in particular to sand core drying equipment. The sand core drying equipment comprises a roller way conveying device, a control electric cabinet and a drying furnace main body, wherein the roller way conveying device includes an external high-load roller way, a tray, a travel switch a, a travel switch b, a power roller, an aluminum stop edge, a chain wheel and a speed reducing motor; and the drying furnace main body includes such components as a moisture discharge fan, a temperature sensor, a ventilation pipe, a rectangular wave guider, a magnetic control pipe module and a sealing door. The sand core drying equipment applies a microwave heating technology, can shorten the heating time and improve the efficiency, realizes continuous and quick drying of sand cores and paint and mechanization and automation of core making parts, adopts a metal plate labyrinth structure, adds silicon rubber bars capable of absorbing microwaves in structural gaps, reduces the microwave leakage to the greatest extent, and prevents the radiation injury of the microwave leakage to human bodies.

The invention provides a bearing cavity sealing system for an aero-engine high pressure ratio fan test piece, which comprises an intermediate case, a bearing case and a rotation shaft, wherein the intermediate case and the rotation shaft are in matched mounting through the bearing case; a front sealing ring and a rear sealing ring are connected between the intermediate case and the rotation shaft; one end of each sealing ring is fixedly connected with the intermediate case; the other ends of the two sealing rings are in matched mounting with the rotation shaft; gaps between the rotation shaft and the two sealing rings are sealed through a labyrinth structure; the front sealing ring is used for separating a high pressure disc cavity and a front sealing cavity; the rear sealing ring is used for separating a blind cavity and a rear sealing cavity; the front sealing cavity and the rear sealing cavity are communicated through an air supply passage to form an integrated sealing cavity; an exhaust passage and a throttling device for controlling the size of the opening of the exhaust passage are also arranged on the intermediate case; and a sealing device is arranged on the rotation shaft and between the front sealing ring and the bearing case. Due to the sealing system provided by the invention, the test piece can be ensured not to leak oil in a high pressure ratio condition.

The invention relates to a hub bearing sealing ring of a railway wagon. The hub bearing sealing ring of the railway wagon comprises an outer framework which is fixed to an outer ring of a bearing, an inner framework which is fixed to an inner ring of the bearing, and a maze type sealing part which is arranged between the inner framework and the outer framework, wherein the inner framework comprises an inner ring which fixedly sleeves the periphery of the inner ring of the bearing, an outer ring which is annularly arranged at the periphery of the inner ring of the inner framework, an outer annular plate which is fixedly connected between the outer end of the inner ring of the inner framework and the outer end of the outer ring of the inner framework, and an inner annular plate which is fixedly connected to the inner end of the inner ring of the inner framework and radially outwards extends; the maze type sealing part comprises a sealing body, and a plurality of lip parts which extend from the sealing body and form maze gaps with the wall surfaces of an inner chamber of the inner framework; lubricating grease fills each maze gap to form a lubricating grease sealing ring. According to the hub bearing sealing ring of the railway wagon, the inner framework box design is adopted, so that vulcanized rubber is not exposed in air; the added maze structure can effectively prevent outside foreign materials and liquid from invading as well as prevent the inside lubricating grease from leaking.

An electric fan is provided, including a labyrinth structure with increased performance of preventing entry of a liquid into a receiving space to receive a stator and a rotor. A clearance is defined between an opposed wall portion of a base and an opposed wall portion of an impeller body, which are opposed to each other in an axial direction of a rotary shaft, to form a labyrinth structure. The opposed wall portion of the base and the opposed wall portions of the impeller body are shaped to form a volume expanding portion within the clearance. The volume expanding portion is constituted from a groove portion for expanding the clearance, having a volume larger than other portions within the clearance.

A pack type sealing device (1), comprising a slinger (2) and a lip member (3), wherein a torque due to the slidable movement of an auxiliary lip (5i) is prevented from increasing, the auxiliary lip (5i) is prevented from becoming a large lubricating resistance against main lips (5g) and (5h), a peeling-off trouble on the auxiliary lip (5i) is prevented from occurring, and the auxiliary lip (5i) is prevented from being worn due to slidable movement. The sealing device (1) is formed by combining the slinger (2) installed on one member (21) of two members rotating relative to each other with the lip member (3) installed on the other member (22). The slinger (2) comprises a mounting part (2a) and a flat surface part (2b) which are formed integrally with each other, and the lip member (3) comprises the main lips (5g) and (5h) fitted to the end face of the flat surface part (2b) of the slinger (2). The auxiliary lip (5i) of labyrinth structure radially facing the peripheral surface (21a) of the one member (21) is formed on the inside of the main lips (5g) and (5h) at a position axially displaced from the mounting part (2a) of the slinger (2).

Provided is a labyrinth tight-sealing structure for increasing inner peripheral resistance of an aero-engine labyrinth cavity. The total flow reducing purpose is achieved by decreasing peripheral flowing of air flows. According to the specific technical scheme, the aero-engine labyrinth tight-sealing structure comprises a tight-sealing lining, a rotary shaft and a plurality of labyrinths arranged on the peripheral surface of the rotary shaft, wherein a labyrinth cavity is formed between every two adjacent labyrinths, and the tight-sealing lining is installed on the rotary shaft through a labyrinth structure. The aero-engine labyrinth tight-sealing structure is characterized in that labyrinth cavity partition plates are distributed in the labyrinth cavities in the peripheral direction and divide smooth annular flowing channels of the labyrinth cavities to form continuous peripheral cavity regions. By utilizing the throttling effect of the partition plates and eddy inside the cavities, peripherally-flowing air flows can flow up and down, fluid flowing resistance can be increased, the peripheral flowing of the labyrinth cavities can be reduced, and fluid leakage amount can be reduced.

The invention relates to an electrostatic water washing dust removing apparatus, which comprises a housing, wherein the housing is provided with a gas inlet pipe and a gas exhaust pipe, a liquid phase labyrinth is arranged inside the housing, the gas inlet of the liquid phase labyrinth is communicated with the gas inlet pipe, the gas outlet is communicated with the gas exhaust pipe, at least the partial liquid phase labyrinth is immersed in a liquid, the liquid phase labyrinth is formed by straggeredly arranging a plurality of horizontally arranged separation plates, at least the facing-water surfaces of the separation plates are provided with a bristle layer, the upper portion of the liquid phase labyrinth gas inlet is provided with a negative ion device, the discharge electrode in the negative ion device is connected with the positive electrode of a power supply, and the liquid phase labyrinth is an electric conduction body and is connected with the negative electrode of the power supply or the ground. According to the present invention, the wet absorption way is used and the liquid phase labyrinth structure is matched, such that the dust in the air is effectively absorbed, and the indoor absorbable particles are reduced; and particularly the liquid phase labyrinth structure is used so as to prolong the contact time of the air and the liquid, and the negative ion device structure is matched so as to well adsorb the particles into the liquid, such that the dust removing effect is improved.

A ventilation fan includes a rotor holder rotating around a rotation axis, an impeller cup including a plurality of blades provided on an outer circumference thereof, and a base portion arranged to rotatably support the rotor holder through a bearing portion. The base portion includes an outer circumferential wall extending upwards in an axial direction from an outer circumferential edge portion thereof. A gap defining a labyrinth structure is provided between an upper end portion of the outer circumferential wall of the base portion and a lower end portion of an outer circumferential portion of the impeller cup. A lower end portion of a cylindrical portion is located axially lower than the upper end portion of the outer circumferential wall of the base portion.

The invention discloses a rotary kiln multistage sealing structure which baffles and reflects gas flow in a rotary kiln cylinder and which has better sealing effect. The structure comprises the rotary kiln cylinder, a kiln head cover and a sealing device; the sealing device comprises a labyrinth structure, a scale structure arranged on the outer side of the labyrinth structure and a reflection structure; the opening of one side of the labyrinth structure adjacent to the scale structure is the labyrinth outlet; the reflection structure comprises a returning spoon arranged in the clearance between the kiln head cover and the rotary kiln cylinder and a reflection plate arranged at the labyrinth outlet; the returning spoon is in an annular groove structure with the longitudinal section in an H shape, and the port of the inner side of the returning spoon faces to the clearance between the kiln head cover and the rotary kiln cylinder; the reflection plate is in an annular groove structure with the longitudinal section in a C shape, and the port of the reflection port faces to the labyrinth outlet. Swirl flow and turbulent flow of the gas flow are produced through the reflection structure, the gas flow is resisted by own, the flowing velocity and carried dust amount are decreased, and the sealing effect is fine.

A clearance 44 is provided between the outer periphery of a duct 42 and a vehicle body, that is, a radiator support 50 and, at the same time, the clearance 44 is made to have a labyrinth structure. In this structure, it is possible to prevent vibrations of the vehicle body from being propagated from the radiator support 50 to the duct 42 while preventing a current of air, such as one caused by movement of the vehicle, from flowing around heat exchangers, such as a radiator 10, and flowing downstream through the clearance 44. Therefore, it is possible to improve the cooling performance of heat exchangers such as the radiator 10 while preventing the duct 42, that is, a duct shroud 40 from being damaged by vibration.

A bearing roller chain which is sealed by a seal mechanism which prevents entry of foreign substances from the outside and leakage of lubricating oil leakage from the inside to the outside, resulting in an improvement in wear resistance of the bearing roller and avoidance both of rotation failure of the roller and of increased traveling resistance of the chain. A seal mechanism is provided between an inner link plate of a bearing roller chain and a bearing roller assembly carried by the link plate. The bearing roller assembly is formed by a plurality of anti-friction rollers between a hollow roller and a bush. The seal mechanism comprises an inner annular oil seal member, a spacer and a disk-shaped seal member having a flange extended toward an outer side surface of the hollow roller loosely into an outer circumferential concave groove on an end surface of the hollow roller. The disk-shaped seal member slidably comes into close contact with the inner link plate and the spacer, respectively. The flange and concave groove form a labyrinth structure protecting the inner annular seal member from entry of foreign substances from the outside. The annular seal has a plurality of lips supplementing the labyrinth seal structure.