74 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 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 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.

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 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.

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 (15) for collecting raw gas from a plurality of aluminium smelting pots (4) is equipped with a plurality of branch ducts (16, 16a-d). Each branch duct (16, 16a-d) is arranged to channel a respective branch flow (32, 32a-b) of raw gas from an aluminium smelting pot (4) to a collecting duct (20a), which is common to and shared by branch ducts (16, 16a-d). Several of the branch ducts (16, 16a-d) are equipped with a combined heat transfer and flow resistance generating element (17) to remove heat from the respective branch flow (32, 32a-b) of raw gas and to balance the flow of raw gas in the raw gas collecting system (15). The combined heat transfer and flow resistance generating elements (17) reduce the need for adjusting the respective branch duct (16, 16a-d) flow volumes using dampers, thereby reducing the power required to transport the raw gas through the system.

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.

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.