1229 results about "Main duct" patented technology

Certain embodiments of the present invention provide a cooling duct assembly for electronic equipment installed in a cabinet. The cooling duct assembly comprises at least one main duct in fluid communication with a front portion of the cabinet. The at least one main duct receives cold air from the front portion of the cabinet and routes the cold air toward a back portion of the cabinet. Additionally, the cooling duct assembly comprises at least one side duct in fluid communication with the at least one main duct. The at least one side duct receives the cold air from the at least one main duct and routes the cold air to at least one side air intake opening on the electronic equipment.

A flow system for medical lines includes a flow component having a main duct and at least one lateral tubular fitting with a female luer cone communicating with the main duct) through a valve. The valve includes a transverse diaphragm normally kept in fluid-tight contact against an annular valve seat of the lateral tubular fitting, which can be moved away from this into an opening position following upon insertion of a male luer-cone introducer of fluid into the lateral tubular fitting. The diaphragm is prearranged for being pushed into the opening position directly by the introducer, and the lateral tubular fitting is configured to couple in a fluid-tight way with the introducer before the latter comes into contact of thrust with the diaphragm.

Provided is a liquid crystal display device and a backlight unit that are of high quality and have a simple configuration that a mechanism cooling a cooling medium is not included. Included are a liquid crystal display panel and an LED backlight unit including an LED light source emitting light toward the panel, and a chassis plate on which the light source is disposed, the plate including a through flow path for cooling air dissipating heat from the light source, wherein the path includes a main duct introducing the cooling air and disposed along one side of the panel, and a branch duct branching off from the main duct, aligned along a disposed direction of the light source, and including an exhaust port disposed at an end of the branch duct and discharging the cooling air to outside of the device.

A sound damping device (4) for a tubular duct (2), particularly a gas transporting tract of an internal combustion engine (1) having a least one bypass channel (5) running parallel to a main duct (6) in a section of the duct (2). The bypass channel (5) is longer than the main duct (6) between a branching off point (7) and a re-entry inlet (8). The bypass duct according to the invention is configured as a spiral duct (5) which winds around the centrally disposed main duct (6) in order to decrease the installation space requirements for the noise suppressor (4).

A cylinder-capacity selector for a hydraulic motor having at least two active operating cylinder capacities and comprising having at least two main ducts. The selector includes three ports and distribution ducts of the motor to establish selective communication between the main ducts and the cylinders of the motor. When the selector passes between its first and second stable positions, in at least one displacement direction, an intermediate stage exists that is maintained for a lapse of time, during which all three ports are in communication and the section of at least one of the passages between the first and second ports and between the second and third ports of the selector is constricted.

The invention relates to an air purification device, particularly used for removing harmful gas in the air and aiming to solve the desorption problem of adsorbent in the air purification device, thereby renewable adsorbent can be utilized to continuously adsorb the harmful gas in the air. The invention adopts the technical means as follows: a heating element is arranged in a main duct near the adsorption unit part and forms a high-temperature region in the main duct; a thermal insulation layer is arranged on the side wall of the high-temperature region; an air door is respectively arranged at both ends of the high-temperature region; an adsorption unit and the heating element are at least arranged in the high-temperature region; a polluted air exhaust port and a circulating air port are respectively arranged at both sides of the adsorption unit; the circulating air port is arranged at the side provided with the heating element; the air inlet end of a pollution discharge fan is communicated with the polluted air exhaust port; the exhaust end is divided into two ways, one way is led to the circulating air port through a circulating air door and a circulating air tube, and the other way is communicated with the outdoors through a pollution discharge air door and a pollution discharge air tube.

Radial oscillating motors are generally fitted with an outer overflow oil line in order to protect sealing elements. This requires an over large amount of devices and system expenditure. Large amounts of installation space are also required for oscillating motors of this kind. The invention provides a radial oscillating motor wherein each bearing (29) is hydraulically connected to a discharge chamber (14) via a main duct (30) in addition to radial ducts (31, 15, 16, 35, 37, 38) and axial ducts (32, 36) in a driven shaft (7). A non-return valve opening out in the direction of the discharge chamber (14) is inserted into the ducts (31, 32, 37, 38).

A refrigerator including [comprising a main body forming a refrigerator compartment and a freezer compartment, each of a freezer compartment main duct and a refrigerator compartment main duct comprising at least one exiting hole and one returning hole communicating respectively with the freezer compartment and the refrigerator compartment, a freezer compartment evaporator and a refrigerator compartment evaporator provided in the freezer compartment main duct and the refrigerator compartment main duct, respectively, and generating cooling air, and a freezer compartment fan and a refrigerator compartment fan provided in the freezer compartment main duct and the refrigerator compartment main duct, respectively, to let out the cooling air generated in the freezer compartment evaporator and the refrigerator compartment evaporator, respectively, through the exiting hole and to return the cooling air in the freezer compartment and the refrigerator compartment through the returning hole, comprising:] an auxiliary storage provided in a main body; an auxiliary supply duct, branched off from one of a freezer compartment main duct and a refrigerator compartment main duct, to supply the cooling air transferred by a corresponding fan to a auxiliary storage; an auxiliary returning duct returning the cooling air in the auxiliary storage to a corresponding main duct; and an auxiliary damper in at least one of the auxiliary supply duct and the auxiliary returning duct, to open and close to respectively supply and block the cooling air to the auxiliary storage.

A device for extracting a liquid phase from a suspension, the device being characterized in that it comprises: a main duct for conveying a flow of said suspension, the duct being of a length that is sufficient to enable a layer of said suspension to develop that is depleted in solid phase; flow disturbance means for disturbing the flow of said suspension, said means being provided in the main duct and being adapted to cause at least one recirculation vortex to form so as to increase locally the thickness of said depleted layer; and liquid extraction means disposed in a region of the device where said suspension is enriched in liquid phase as a result of said recirculation vortex.

A method of extracting a liquid phase from a suspension, the method comprising injecting said suspension into such a device at a flow rate suitable for causing at least one recirculation vortex to be formed, and extracting a fraction of said suspension that is enriched in liquid as a result of said vortex.

The invention relates to a pressure detecting method for preventing the clogging of a filling pipeline, which is characterized in that pressure sensors are arranged on at least three pressure detecting points on the main pipe of the filling pipeline, wherein the first pressure detecting point is arranged at the front part of a laneway filling pipe, the second pressure detecting point is arranged in the middle of the laneway filling pipe, the third pressure detecting point is arranged on the filling pipe at the inflection point of a working face and a gate, the pressure sensors are used for transmitting real-time pressure values of the pressure detecting points into a PLC (programmable logic controller), whether pipeline clogging occurs or not is judged and measures needing to be taken when pipeline clogging occurs are judged through a control program preset in the PLC. With the adoption of the pressure detecting method, whether the filling pipeline is clogged or not and the filling pipeline is clogged at which position can be accurately judged and the clogging condition is processed in time according to the pressure difference change of the pressure detecting points and the rapid pressure change of each single pressure detecting point.

The invention relates to a novel ventilating pipeline wind power generation system and a generator. With the help of air convection and upward draft of wind in a ventilating pipeline, fresh air naturally flows into a fresh air collecting channel chamber from a fresh air inlet of a second floor equipment room on the ground, enters into an air-supplying stand pipe 3 in a basement by virtue of an air-supplying pipeline 2 in an empty space of the basement, and then enters rooms on each floor by virtue of a main vertical air-supplying pipeline 41 on an outdoor south warming wall and lateral air-supplying branched pipelines 42 and 42' on each floor. An electric wind driven generator is used for solving the problem that the natural wind power in an air flue can not achieve the wind power level for delivering and exhausting air and starting the wind driven generator to generate, thereby providing a system which is free from wind field influence and completely utilizes a novel ventilating pipeline system for construction and a wind generating set system arranged in a pipeline of the novel ventilating pipeline system and composed of multiple minitype wind generating sets to generate electricity while performing ventilating air conditioning, so as to greatly lower the costs of ventilating air conditioning and wind power generation.

The invention discloses a duct type unmanned aerial vehicle and a control method thereof.The unmanned aerial vehicle comprises a main vehicle body (1), a first main duct (2), a second main duct (3), a third main duct (4) and a fourth main duct (5).The first main duct (2) and the second main duct (3) are connected with the first side of the main vehicle body (1).The third main duct (4) and the fourth main duct (5) are connected with the second side of the main vehicle body (1).The first main duct (2) and the fourth main duct (5) are arranged symmetric about the tail of the main vehicle body (1).The second main duct (3) and the third main duct (4) are arranged symmetric about the head of the main vehicle body (1).The unmanned aerial vehicle can run amphibiously on land and in air, so that the unmanned aerial vehicle stably flies in multiple forms to pass through multiple barriers, space of a power system is greatly saved through a duct type structure, large space is vacated for carrying of the unmanned aerial vehicle, and compared with a traditional multi-rotor-wing unmanned aerial vehicle, the duct type unmanned aerial vehicle is safer and more reliable.

A cabin system to be mounted on a vehicle body is disclosed. The cabin system includes a driver's seat, an air conditioner body for indoor air conditioning disposed downwardly of the drive's seat, a plurality of support pillars constituting a cabin framework, a ceiling portion, and a main duct having a hollow tubular construction, the main duct forming therein an air passageway for the indoor air conditioning. The main duct includes, at a lower portion thereof, a duct connecting opening to be connected to the air conditioner body and also includes, at a lateral portion thereof, a support pillar engaging face. The main duct is attached through the support pillar engaging face to one of the support pillars along an indoor side peripheral face of the one support pillar. The support pillar engaging face of the main duct and the indoor side peripheral face of the one support pillar have profiles complementary with each other.

A fan duct is retained on a fan. The fan has an outer frame. The outer frame forms a plurality of cavities in an outer circumferential surface thereof. The fan duct has a main duct wall and a connecting wall. The main duct wall has a fan-end opening. The connecting wall extends outwardly from the fan-end opening of the main duct wall and has at least two hooks. An edge of the outer circumferential surface of the outer frame of the fan matches an inside of the connecting wall, and each of the hooks locks into a corresponding one of the cavities. As a result, the fan duct of the present invention is capable of being easily hung onto the fan, so that the fan duct can be mounted on and detached from the fan without requiring the use of tools.

A milling tool includes a rotary cutting head having an end surface in which grooves are formed. The grooves communicate with a duct extending coaxially completely through the center of the cutting head to conduct cooling/lubricating fluid to cutting inserts mounted at outer ends of the grooves. The grooves induce a flow of fluid from inner ends of the grooves to the outer ends in response to rotation of the cutting head. A removable deflector can be attached to the end surface to deflect fluid from the main duct to the grooves.

The invention discloses an underwater tunnel ventilation system and ventilation method. Two ends of a service tunnel are provided with ventilation shaft exhaust ducts and ventilation shaft air delivery ducts and are connected with the exhaust ducts and the air delivery ducts; each exhaust duct is communicated with one main tunnel via an exhaust connection duct; each air deliver duct is communicated with the other main tunnel by an air delivery connection duct; a replacement ventilation connection duct is arranged between the two main tunnels to communicate the two main ducts; fresh air enters the air delivery duct from the ventilation shaft air delivery ducts on two ends of the service tunnel, and enters one main tunnel via the air delivery connection duct; replacement axial fans are started to cause air flow in one main tunnel to enter the other main tunnel via the replacement ventilation connection duct, and polluted air is discharged from the ventilation shaft exhaust ducts via the exhaust connection duct and the exhaust ducts. According to the ventilation system, the service tunnel is used as an air duct to import fresh air into the tunnel and discharge the polluted air, and the difficulty that an artificial island ventilation shaft needs to be arranged in every multiple kilometres for a part, which passes through a water area, of the tunnel for a long distance is solved.

The invention relates to an on-line changing method of a hot blast main duct of a blast furnace, belonging to the field of construction of a pipeline system used for gas distribution in a brick-built hot blast furnace. The on-line changing method of the hot blast main duct of the blast furnace sequentially comprises the following steps after the hot blast furnace stops producing and each energy medium pipeline is closed: disassembling the hot blast main duct; plugging pipeline openings positioned on both ends of a section which is not disassembled; building the three-way part of the hot blast main duct on the ground; lifting the hot blast main duct; building the hot blast main duct on line; and disassembling a heat-insulation plugging wall. The invention has short construction period, low cost and little influence on production.

The invention relates to an oil-gas-water flow measurement system which comprises an integrated three-phase flow meter, a metering separator used for the three-phase separation of oil, gas and water, an oil flow meter, a gas flow meter and a water flow meter for the separate metering of oil, gas and water after the separation. The integrated three-phase flow meter includes a main pipe, a venturi device which is arranged on the main pipe and used for measuring the flow of the fluids in the main pipe, a conductivity measuring sensor which is arranged in the main pipe and used for calculating the gas phase fraction of the small gas bubble, the gas phase fractions of oil, gas and water, and the flow rate of the gas and liquid, a capacitance measuring sensor which is arranged in the main pipe and used for calculating the gas phase fractions of the big and small bubbles, the gas phase fractions of oil, gas and water, and the flow rate of gas and liquid and a Gamma densimeter which is arranged in the main pipe and used for calculating the density of the fluids. The oil-gas-water flow measurement system has the advantages of accurately measuring the water content of the condensate oil of the high-pressure condensate gas well, realizing the online monitoring of the oil gas well and becoming more practical.

The invention discloses a high-frequency muffler used on an automobile intercooler intake pipe. The high-frequency muffler comprises a high-frequency muffling structure and a main pipeline connected on the intercooler intake pipe; a closed shell is positioned and connected on the periphery of the main pipeline, at least two partitions are arranged in the closed shell radially to enable at least two resonant cavities and an expansion cavity to be formed in the closed shell, each resonant cavity is communicated with the main pipeline through a group of small round through holes formed in the circumference of the main pipeline, the expansion cavity is directly communicated with the main pipeline, and the resonant cavities and the expansion cavities jointly form the high-frequency muffling structure. In a limited engine room space, the high-frequency muffler is wider in muffling frequency band, excellent in muffling performance and capable of more effectively lowering high-frequency noise such as squeal and surge generated in the working process of a turbocharger.