75 results about "Branch Duct" patented technology

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 device is provided for chromatographic separations comprising a manifold comprising a plurality of connectors for connecting to one or more chromatographic separation columns and / or feed or extraction tubing. At least one central duct is formed between at least two connectors forming an inlet and an outlet respectively. The central duct comprises a closable duct valve; and a plurality of branch ducts branching from the central duct to a branch connector. The branch duct comprises a closable branch valve, wherein at least one branch duct is positioned between the inlet and the central duct valve and wherein at least one branch duct is positioned between the outlet and the central duct valve. The device is arranged for carrying out single-column and (continuous) multicolumn chromatographic separations. This allows the purification of biopharmaceutical products without having to develop, demonstrate and validate cleaning procedures for the valves.

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.

A non-excavation lining repair method for the repair of lower drainage branch pipes of urban roads, comprising: (1) cleaning and testing the lower drainage branch pipes; - 0.5mm polyester film, the inside of which is made of polyester non-woven fabric and filled or impregnated with unhardened thermosetting resin; (3) After cutting the resin hose to the same length as the drainage branch pipe, Flip inside and outside on the ground and drag it into the drainage branch pipe; (4) Send a pressure bag into the resin hose, and pressurize it with water or air to make the resin hose expand and stick to the inner wall of the lower drainage branch pipe; (5) Warm water circulation heating is carried out in the pressure bag, and a hardened high-strength lining new pipe is formed on the inner wall of the drainage branch pipe to be repaired; (6) The air and water in the pressure bag are removed and taken out from the new lining pipe. According to the present invention, the pressure pack can be reused, and the drainage branch pipe can be repaired without excavation on the road surface when the size of the rainwater grate is very small and the end cutting cannot be performed.

A device is provided for chromatographic separations comprising a manifold comprising a plurality of connectors for connecting to one or more chromatographic separation columns and / or feed or extraction tubing. At least one central duct is formed between at least two connectors forming an inlet and an outlet respectively. The central duct comprises a closable duct valve; and a plurality of branch ducts branching from the central duct to a branch connector. The branch duct comprises a closable branch valve, wherein at least one branch duct is positioned between the inlet and the central duct valve and wherein at least one branch duct is positioned between the outlet and the central duct valve. The device is arranged for carrying out single-column and (continuous) multicolumn chromatographic separations. This allows the purification of biopharmaceutical products without having to develop, demonstrate and validate cleaning procedures for the valves.

The invention relates to a computer case, in particular to a split positioning air-blowing computer case, which comprises a case body, an air inlet blower, a dust screen, an air guide duct, air supply ports, an exhausting fan, a pull-tab, a tightening wire, positioning clamps and air-splitting branch ducts. The invention is characterized in that the air inlet blower is positioned on the left wall of the case body, a plurality of air-splitting branch ducts are positioned at the case body-facing side of the air inlet blower, one end of the air guide duct is connected with the air-splitting branch ducts and the other end thereof is connected with the neck of the air supply ports, the pull-tab is covered over the air guide duct, two ends of the tightening wire are connected with the pull-tab and the positioning clamps respectively, the positioning clamps are respectively fastened on each heater inside the case body, and each air supply port is arranged oppositely to each heater inside the case body. The invention can systemically distribute the air flow inside the case body to ensure the existence of high-speed air flow on the surface of each heater, and has higher cooling efficiency than the prior art.

A duct connection assemble, whereby upon connecting a saddle flange (2a) of the joint duct (8) to the main ribbed duct (3) through the communication hole (1b), the rubber sealant (1) is interposed between the saddle flange (2a) and a circumferential area of the communication hole (1b) so that protuberances (2b) uniformly press the rubber sealant (1) through the recesses (1d) to tightly engage the saddle flange (2a) against an outer surface of the main ribbed duct (3) through rib-fitting grooves (1a) and the water sealing small projective rings (1c). The joint duct (2) is brought into an elastical engagement with the main ribbed duct (3) to achieve a good water sealing action for an extended period of time.

The invention discloses a refrigeration device and a temperature control method of cold rooms thereof. The refrigeration device comprises a first cold room, a refrigerating room, a second cold room and an evaporator room, wherein the top part of an upper vertical partition is provided with an air supply opening and the bottom part of the upper vertical partition is provided with a return air opening; an air duct and a fan are arranged in an air flow distributing plate; the air duct has a first air branch duct leading to the refrigerating room and a second air branch duct leading to the electric air door of a transverse partition; and the second air branch duct leading to the air supply opening on the top part of the upper vertical partition and is provided with an air supplying opening which is positioned above the transverse partition and leads to the second cold room. In the refrigeration device of the invention, only two air branch ducts are needed to be arranged for controlling the first cold room, the second cold room and the refrigerating room, and the air duct structure is simple and occupies small space in a cabinet. The temperature control method of the cold rooms of the refrigeration device is simple and can meet the requirements of various service states.

A fuel supply duct, which supplies a mixed fluid of a solid fuel and carrier gas to one or more burners provided on the walls of a furnace, is provided with a branching part, and each of a plurality of branch ducts, which branch out from the branching part, is connected to a corresponding burner. Also a damper, with which the tilt angle with respect to the direction of flow of the mixed fluid can be changed, is positioned in the fuel supply duct at the upstream side of the branching part so that a mutual difference will arise in the solid fuel concentrations of the mixed fluid supplied to the respective branch ducts. A fuel distributor for fuel supply duct is thus arranged. The tilt angle of the above-mentioned damper is adjusted to increase the concentration of solid fuel in the mixed fluid supplied to a specific burner. At a burner to which the high solid fuel concentration is supplied, stability of ignition and stable combustion of the ignited flame can be obtained during low load operation.

To provide a ventilating system and ventilating system control method capable of advancing energy conservation. A controller sets a static pressure setting value based on the airflow of the system as a whole, calculated from the airflow of venturi air valves of fume hoods that are operating, and controls the speed of rotation of a fan based on the static pressure setting value and the static pressure within a main duct. Doing so enables control of the speed of rotation of the fan to be performed while ensuring the airflow of the ventilating system, thus making it possible to prevent wasted motive force of the fan, even when the airflows of each of the venturi air valves are not identical and even when the changes in resistance of the branched duct system relative to the various changes in airflow are not identical, with the result that it is possible to advance energy conservation.

A vehicle seat air-conditioning device has a branch duct and a blower. The branch duct is branched laterally from a ventilation duct on a condition of being mounted in a vehicle. The ventilation duct delivers air, which is blown from an air conditioning unit that air-conditions an inside of a vehicle compartment, to a periphery of a rear seat. The blower draws air from the branch duct and blows the air into a ventilation path formed in a blowing target seat. The blow is arranged on a lateral side of the ventilation duct on the condition of being mounted in the vehicle. Since the blower is arranged on the lateral side of the ventilation duct in the vehicle, the blower can be located at a lower position regardless of a length of the ventilation duct in an upper-lower direction. Therefore, a space in the vehicle that is occupied in the upper-lower direction by the ventilation duct and the blower as a whole can be reduced.

An air conditioning system includes a controller for controlling the feed rate of air from a blower such that the inside of the operator's cab is at higher pressure than outside pressure when a pressurization mode for pressurizing the inside of the operator's cab is selected, a branch duct opening / closing damper device is provided for distributing the air from the blower to an air outlet directed to an operator and an air outlet undirected to the operator (i.e., a defroster air outlet). Further, the controller controls the branch duct opening / closing damper device such that the air is ejected from the air outlet directed to the operator in such a volume that makes the operator have comfortable cool or warm feeling whereas the remaining volume of air is ejected from the defroster air outlet, when the difference between the inside air temperature of the operator's cab and a preset temperature becomes small.

The invention provides an accurate air supply energy saving system of a machine room. The accurate air supply energy saving system of the machine room comprises a static pressure cabin, an air supply duct and a plurality of air supply cabins, wherein the inlet of the static pressure cabin is mutually connected with the air outlet of an air conditioning unit; the outlet of the static pressure cabin is mutually connected with the air supply duct; the air supply duct is mutually connected with the inlets of the air supply cabins through a plurality of branch ducts; the air supply cabins and cabinets are fastened together; the outlets of the air supply cabins are respectively communicated with the interiors of the cabinets and are used for supplying cold air into the cabinets; and intelligent volume dampers are respectively arranged between the air supply cabins and the branch ducts. By a working mode that equipment is cooled and then the environment is cooled, variable-volume accurate air supply that cold volume is distributed as needed according to the heat of a stand is realized by the accurate air supply energy saving system of the machine room according to the requirements of the heat productivity of different cabinets by adopting a mode of closing cold channels, thus, not only is the potential safety hazard brought by the hot area of the machine room avoided but also the cold volume of the machine room is reasonable distributed; the utilization efficiency of the air conditioner is greatly increased; and the electric energy is saved.

A navigation guide wire (1 ) through an anatomical apparatus, for example a vascular system, unusually capable of being safely positioned proximate to bifurcations, comprises: - an elongated body (19) having a proximal end (21 ), a distal end (20), and a longitudinal extension along an axis (x-x) extending at least from said proximal end to said distal end; - at least one first proximal portion (4) having a predetermined first flexural rigidity (KfI ) capable of a first predetermined flexure in at least one plane comprising at least one portion of said longitudinal axis in order to allow a first curvature to said proximal portion when bending stressed, while ensuring a predetermined elastic return in a rectilinear position of the elongated body proximal portion when not subjected to stresses; - at least one second distal portion (3) having a predetermined second flexural rigidity (Kf2), the amount of which is equal to or higher than said first flexural rigidity of said at least one first proximal portion, capable of a predetermined flexibility of said second distal portion in order to obtain a second curvature when bending stressed in at least one plane comprising at least one portion of said longitudinal axis, while ensuring an elastic return to a rectilinear position of said distal portion of said elongated body when not subjected to stress; - at least one intermediate length (6), arranged between said first proximal portion and said second distal portion, having a third flexural rigidity (Kf3) essentially lower than said first flexural rigidity (KfI ) and said second flexural rigidity (Kf2), which allows a predetermined flexibility capable of a third curvature substantially more pronounced compared to said first curvature and second curvature, so as to allow a considerable direction change between said first proximal portion (4) and said second distal portion (3).

The invention relates to the technical field of coal mine safety production, and specifically relates to a three-proof device in the drilling process. The three-proof device comprises a drainage conduit, a gas-water separating deslagging tank, and a gas filtering water tank, wherein one end of the drainage conduit is a slag inlet, and the other end is communicated with a drilling machine cooling water, the lower part of the drainage conduit is communicated with the gas-water separating deslagging tank, the gas-water separating deslagging tank is communicated with the gas filtering water tank, the lower part of the gas-water separating deslagging tank is provided with a water-slag discharging part, the lower part of the gas filtering water tank is provided with a drain pipe with a valve, the top end of the gas filtering water tank is provided with a negative pressure drainage nozzle stub, and the negative pressure drainage nozzle stub is connected with a mine branch duct drainage system. The gas-proof, the dust-proof and fire-proof functions of the drilling hole are integrated so as to improve the security and reliability of the mine underground operation and lay the foundation for the safety development of the mine and the harmonious the mine area construction.

A fuel distribution device for fuel feed ducts, comprising a branching point in a fuel feeding duct for feeding a mixed fluid of solid fuel and carrier gas to one or more burners installed in the wall surface of a furnace, a plurality of branch ducts branching off from the branching point and having the corresponding burners connected thereto, and a damper disposed in the fuel feed duct on the upstream side of the branching point and capable of changing the angle of inclination with respect to the direction of flow of the mixed fluid in such a manner as to cause the solid fuel concentrations in the mixed fluid fed to the branch ducts to deviate from each other. The angle of inclination of the damper is adjusted to increase the solid fuel concentration of the mixed fluid in a particular burner. The burner having a high solid fuel concentration fed thereto ensures ignition stability and stabilized combustibility of ignited flames during low loading.

The present invention relates to multi-split air conditioner with branched refrigerant duct capable of guiding refrigerant among outdoor units and indoor units in different modes. The multi-split air conditioner includes at least one outdoor unit for heat exchanger, several indoor units for heat exchanger, microcomputerized central controller for the operation of the outdoor unit and the indoor units, and refrigerant duct for refrigerant to flow among the outdoor unit and the indoor units. The refrigerant duct includes shared duct to the outdoor unit and branched ducts to the indoor units. All the branched ducts may be led out from the shared duct in different modes for convenient installation.

A biomedical line union device for administering pharmacological substances, comprising a union body with: at least one main duct thereinside, provided with at least one outlet associated with a conveyance line or with a closed container, and at least one branch duct, provided with at least one branching port associated with a line for administering a pharmacological substance and connected to the main duct by at least one connecting port. The device comprises at least one valve element, arranged proximate to the connecting port and movable between a closed configuration, in which it interrupts the connection between the branch duct and the main duct, and an open configuration, in which it provides the connection between the branch duct and the main duct due to an overpressure within the branch duct with respect to the pressure within the main duct, and vice versa.

This invention discloses a combustor with several entrances for solid fuel, and its application. The combustor comprises an outer nozzle, a middle nozzle, an inner nozzle, ducts connected with the above nozzles, and two or more branch ducts for feeding solid fuel through connected with the central duct. The ratio of total cross section area of the branch ducts to the central duct is (1-1.5):1, which can avoid difficult measurement of solid fuel mass flow rate due to large caliber of the duct, and improve the distribution uniformity and flow stability of high-concentration solid fuel at duct cross section. The combustor has such advantages as convenient control over mass flow rate, simple structure, convenient production and maintenance, and wide applications, and can be used for producing synthesis gas from solid carbon-containing substances by partial oxidation.

The invention relates to a dedusting device and particularly relates to a self-dedusting device of a coke oven coal tower loading truck. The self-dedusting device comprises a seal channel and a coal discharge valve, wherein the coal discharge valve is enclosed in the seal channel, and an inlet of the coal discharge valve is connected to the tail end of a coal tower chute located at the lower part of the coal tower; the seal channel comprises a fixed section with a flange and a bellow section, the upper part of the fixed section is connected to the coal tower chute by virtue of the flange, the tail end of the bellow section stretches and is connected with a joint of a coal hopper of the coal loading truck; the fixed section is connected with a branch duct and the branch duct is connected with the dedusting system. According to the self-dedusting device of the coke oven coal tower loading truck, the connection part between the coal tower chute and an interface of a coal hopper of the coal loading truck is enclosed into a seal chamber by virtue of the seal channel; by means of the height of a vertical secondary main air duct and the temperature difference between the gas in the main air duct and the atmosphere, negative pressure is generated in the air duct, and the coal dust and airflow inside the seal chamber are pumped into a dust remover so as to be subjected dust removal and the dust-removed coal dust is recycled.

The invention relates to a multipurpose ureteroscope sacculus guidewire and a using method thereof. The multipurpose ureteroscope sacculus guidewire comprises a guidewire sheath (3), a guidewire core (1) penetratingly arranged in the guidewire sheath (3) and a Y-shaped connector (4) fixedly connected with one end of the guidewire sheath, and is characterized in that an expandable sacculus (2) is arranged at the far end of the guidewire sheath, and an inner cavity of the expandable sacculus (2) and branch ducts of the Y-shaped connector form liquid perfusion passages commonly.

A raw gas collection system for collecting raw gas from a plurality of aluminium smelting pots is equipped with a plurality of branch ducts (28d), each of which is arranged to channel a respective branch flow (38d) of raw gas from an aluminium smelting pot to a collection duct (26A), which is common to and shared by the branch ducts (28d). Each of said branch ducts (28d) is, near an outlet (52d) thereof, equipped with a curved section (50d) for aligning the branch flow (38d) with a flow direction of raw gas (27A) already present in the common collection duct (26A), and a constriction (54d) for accelerating the branch flow (38d) through the branch duct outlet (52d) into the common collection duct (26A). Furthermore, each of said branch ducts (28d) is equipped with a heat exchanger (40d) for removing heat from the respective branch flow (38d) of raw gas.; The combined flow resistance of the constriction (54d) and the heat exchanger (40d) reduces the need for adjusting the respective branch flows (28d) using dampers, thereby reducing the power required to transport the raw gas.

A multi-functional cleaner is disclosed. In the multi-functional cleaner of the present invention, a heating chamber (40), in which a heating plate (41) is provided, is defined below a water supply tank (30), which is installed between a main body (10) and a cover (20). A stop cap (50) is fitted over a steam discharge duct (31) of the water supply tank (30). A hollow steam guide duct (11) is provided in the steam discharge duct (31) at a position spaced apart from the steam discharge duct (31), and the steam guide duct communicates with a branch duct provided in the main body. A display panel and a subsidiary power supply connector are provided at predetermined positions in the upper surface of the cover. A handle connector (60), into which a handle rod (63) is fitted, is coupled to opposite ends of the cover using removable coupling hinges (61).

The invention relates to a branch mixer, wherein the inner tube is sheathed with outer tube to form dual-layer steel tube structure; one end of inner tube is the ejector, while one relative end of outer tube is ejector; another end near the outer tube has outer tube connector on the side wall; the outer tube connector is connected to the main gas tube connector. The invention has simple structure; the high-pressure air of inner tube is high-speed ejected from the inner tube ejector, to eject the gas in outer tube at high speed, to be mixed uniformly to be ejected into furnace, to uniformly distribute the heating gas in retort furnace.

The invention provides a refrigerant distribution device for refrigeration system which is capable of improving heat exchange efficiency, comprising: an entering duct, a bottom cover plate, a core, a hollow cylinder, an upper cover plate and multi-branch ducts. The core is disposed in the space formed by the bottom cover plate, the cylinder and the upper cover plate, wherein a plurality of openings are distributed on the core. The refrigerant distribution device according to the invention is capable of realizing uniform distribution and allocation of refrigerant in refrigeration system, and improving heat exchange efficiency of the refrigeration system.