39results about How to "Extend the length of the flow path" patented technology

A self-calibrating monitoring system based on microdialysis for measurement of a body analyte is disclosed. In one embodiment, perfusate containing a known concentration of body analyte is mixed with an enzyme solution after passing through a microdialysis needle and instead of passing through the microdialysis needle to measure the body analyte and to calibrate the analysis chamber that measures the body analyte.

The filter cartridge for the water tank of a coffee machine comprises a housing having on both sides a plurality of slot-shaped openings constituting two inlets. For softening the water, the housing of the filter cartridge contains a ion exchange resin. The bottom of the housing comprises a central outlet. The interior of the housing is provided with a plurality of baffle members increasing the length of the flow path of the water between inlets and outlet. The housing comprises an upper portion and a lower portion, sealingly fixed to each other. The baffle members extend essentially in vertical direction and are alternately fixed to the upper and to the lower housing portion. Water passages are provided between the upper housing portion and the baffle members fixed to the lower housing portion, as well as between the lower housing portion and the baffle members fixed to the upper housing portion. The filter cartridge of the invention requires not much space, but offers high efficiency resulting from the long flowing path of the water through the ion exchange resin between inlets and outlet.

A helical heat exchanger assembly comprises a plurality of helical heat exchangers, each helical heat exchanger comprising a tube having first and second ends, a length, an inner diameter and a cross-section incorporating the inner diameter, a thermally conductive tube insert having a length and an outer diameter substantially equal to the inner diameter of the tube, the tube insert having first and second ends and comprising a single helix extending along the length of the tube insert and twisted around a central axis. The tube insert is sealed within the tube by sealing an outer edge of the helix to an inner surface of the tube to form fluid-tight first and second fluid flow paths defined between opposing sides of the helix and the inner surface of the tube, respectively. A plurality of inlet and outlet fluid ports are positioned for passage of a first and second fluid into and out of each tube. A first manifold connects each of the first ends of the heat exchanger tubes and a second manifold connects each of the second ends of the heat exchanger tubes, wherein at least one of the first or second manifolds includes baffles to direct fluid flow within the manifold such that at least some of the helical heat exchangers may be arranged in series, or in parallel, within the heat exchanger assembly via the baffles. Each helix has a predetermined pitch which may be less than or greater than the tube inner diameter and defines a length of the first and second fluid flow paths within each heat exchanger tube, wherein the pitch of the helix may be constant or variable along the length of the tube insert.

The present invention discloses a heat dissipation and cooling method for high-heat density cabinets in a data center. According to the method, a large-temperature difference air conditioner end device used for cabinet cooling and cooled cabinets are encapsulated in a constructed object isolated from a machine room environment, so that heat transfer between the inner space of the building and the external machine room environment can be prevented; the large-temperature difference air conditioner end device used for cabinet cooling is arranged at one side of the cooled cabinets, or the large-temperature difference air conditioner end device is arranged between the two cooled cabinets; the large-temperature difference air conditioner end device for cabinet cooling and the cooled cabinets are connected with a control system; and the large-temperature difference air conditioner end device for cabinet cooling can realize automatic adjustment according to the control system. According to the heat dissipation and cooling method for the high-heat density cabinets in the data center of the invention, the inner surface area of a circulating liquid flowing pipeline is increased, so that the heat exchange area of single heat exchangers can be increased; and the heat exchangers are connected in series with one another, so that the length of the flowing path of a circulating liquid can be obviously increased, and a small-flow rate and inlet / outlet large-temperature difference operation mode of the circulating liquid can be realized.

A reactor supplied with a reactant to cause reaction of the reactant includes a reaction device which has a hollow box type member having a top plate and a bottom plate opposed to each other and side plates connected to an edge of the top plate and an edge of the bottom plate. A partition member is housed in the box type member, the partition member coming into contact with at least internal faces of the side plates of the box type member and partitioning a space in the box type member into a plurality of reaction chambers to which the reactant is to be supplied. A penetrating region is provided in the partition member to connect the adjacent reaction chambers to each other, the penetrating region having the reactant passed therethrough. A flow channel through which the reactant flows is formed inside of the reactor by a partition member, the flow channel is wobbled, meanwhile the rigidity of the reaction device is improved.

The invention discloses a staggered declination type sludge drying device, and belongs to the technical field of sludge treatment. A plurality of stages of conveying mesh belts inclining downwards ina staggered mode are arranged in the drying box body, an air outlet and a sludge feeding port are formed in the upper portion of the drying box body, and a sludge discharging port and an air inlet areformed in the bottom of the drying box body. The air outlet is formed in one side of the starting end of the uppermost-stage conveying mesh belt, and the sludge feeding opening is formed above the starting end of the uppermost-stage conveying mesh belt; the air inlet is formed below the starting end of the lowermost-stage conveying mesh belt and connected with the hot air system, and the sludge outlet is formed below the tail end of the lowermost-stage conveying mesh belt; the sludge discharge port is provided with a discharge port valve, and the sludge feed port is provided with a feed portvalve; and a sealing strip is arranged in a gap between the starting end of each stage of conveying mesh belt and the side wall of the drying box body. The drying device is reasonable in structure andair path design, small in occupied space, high in drying efficiency and low in energy consumption.

A reactor supplied with a reactant to cause reaction of the reactant includes a reaction device which has a hollow box type member having a top plate and a bottom plate opposed to each other and side plates connected to an edge of the top plate and an edge of the bottom plate. A partition member is housed in the box type member, the partition member coming into contact with at least internal faces of the side plates of the box type member and partitioning a space in the box type member into a plurality of reaction chambers to which the reactant is to be supplied. A penetrating region is provided in the partition member to connect the adjacent reaction chambers to each other, the penetrating region having the reactant passed therethrough. A flow channel through which the reactant flows is formed inside of the reactor by a partition member, the flow channel is wobbled, meanwhile the rigidity of the reaction device is improved.

A semiconductor structure and a method for forming a semiconductor structure are disclosed. A forming method may include: providing a base, including a first region used to form a well region and a second region used to form a drift region, where the first region is adjacent to the second region; and patterning the base, to form a substrate and fins protruding out of the substrate, where the fins include first fins located at a junction of the first region and the second region and second fins located on the second region, where the quantity of the second fins is greater than the quantity of the first fins. In some implementations of the present disclosure, the quantity of the second fins is increased to correspondingly increase the length of a flow path in which a current flows from a drain region to a source region, thereby reducing a voltage drop in the current flow path, and further improving a breakdown voltage of an LDMOS, to improve the device performance of the LDMOS.

The present disclosure relates to a filter, which comprises a housing, a protective bushing, a magnetic bar and a filter screen. The protective bushing, the magnetic bar and the filter screen are disposed in the housing. The protective bushing comprises a cavity and a channel. The channel is disposed along the axial direction of the cavity. The magnetic bar inside the filter adsorbs metal impurities in water in the channel. The shape of the channel increases the length of the flow path of the water so that the metal impurities in the water can be guaranteed to be sufficiently adsorbed by the magnetic bar. The filter screen filters out non-metal impurities in the water. An exhaust valve provided at the top of the protective bushing balances air pressure inside the filter and outside the filter, such that the water can flow out and in smoothly.

The invention relates to a mixing valve. The mixing valve comprises a valve body housing, wherein transverse two sides of the valve body housing are separately equipped with a left side connecting cover and a right side connecting cover; a water inlet connecting tube is arranged on the left side connecting tube; a ring-shaped water return tube is arranged on the outer wall of the water inlet connecting tube; one axial end of the water return tube is equipped with a sealed structure and the other end of the water return tube is provided with an opening structure; the end part of the water inletconnecting tube is further equipped with a water reflux tube; the outer wall of the water reflux tube is in sleeve connection to the inner part of the water return tube through the inner wall of thewater return tube; a tapered movable sleeve is arranged on a sealed position of the water reflux tube; one axial end of the movable sleeve is arranged on a tapered guide surface; the ring-shaped sidewall surface of the movable sleeve is in sliding connection with the sealed end of the water reflux tube; a water exhaust tube is further arranged on the right side connecting cover of the valve bodyhousing; a water discharge cover which is of a gradual reducing structure is connected on the water exhaust tube; a reducing end of the water discharge cover is connected with the water exhaust tube;the water exhaust tube is fixed with the movable sleeve; and a supporting spring is arranged between the water discharge cover and the water reflux tube.

The invention relates to a flow-limiting valve which comprises a valve body shell. A water inlet connecting pipe is arranged on the left side of the valve body shell, an annular return water pipe is arranged on the outer wall of the water inlet connecting pipe, a reflux water pipe is further arranged at the end of the water inlet connecting pipe, the outer wall of the reflux water pipe is in sleeve connection with the inside of the return water pipe through the inner wall of the return water pipe, a conical reflux plate is arranged inside the reflux water pipe and connected in the middle of the reflux water pipe through an annular elastic supporting ring, a drain pipe is arranged on a right connecting cover of the valve body shell, a drain cover with a convergent structure is connected onto the drain pipe, a necking end of the drain cover is connected with the drain pipe, the drain pipe is connected onto the annular inner wall of a movable sleeve through a plurality of connecting rods,the conical back of the reflux plate is connected onto the drain pipe through a plurality of elastic connecting rods, a plurality of supporting spring pieces are annularly arrayed on the outer wall of the reflux water pipe, and a plurality of supporting rods are annularly arrayed on the drain cover and contact with the supporting spring pieces.

A fuel-cell unit cell comprises: a membrane electrode and gas diffusion layer assembly; a cathode-side separator made of a press-molded plate, the cathode-side separator forming a plurality of cathode gas flow paths and non-flow-path portions therebetween on a cathode-side surface of the membrane electrode and gas diffusion layer assembly; and an anode-side separator made of a press-molded plate, the anode-side separator forming a plurality of anode gas flow paths and non-flow-path portions therebetween on an anode-side surface of the membrane electrode and gas diffusion layer assembly. At least one gas flow path among the plural cathode gas flow paths and the plural anode gas flow paths includes a constricting portion that is configured to reduce a flow-path height in a stacking direction of the fuel-cell unit cells as well as to reduce a flow path cross-sectional area of the gas flow path. When projected and observed along the stacking direction, the plural cathode gas flow paths and the plural anode gas flow paths are configured to have mutually different two-dimensional shapes, there exist intersect positions at which the cathode gas flow paths and the anode gas flow path intersect each other, and the constricting portion is provided at a position other than the intersect positions.

There is provided a liquid container that comprises an upper wall and a bottom wall; a liquid supply port provided in the bottom wall; a first chamber provided on a +Z direction side that is an upper wall side; a second chamber provided on a −Z direction side that is a bottom wall side; a partition wall configured to part the first chamber from the second chamber; and a connecting hole configured to connect the first chamber with the second chamber. The second chamber is connected with the liquid supply port. The first chamber is connected with the liquid supply port via the connecting hole and the second chamber. The second chamber includes a return flow path that is turned back along an X direction. A liquid contained in the first chamber is flowed from the connecting hole through the return flow path to the liquid supply port.

An electrostatic precipitator is provided. The electrostatic precipitator includes an electrode part including a high voltage electrode with voltage applied thereto and a ground electrode coiled in a circumferential direction along with the high voltage electrode while being spaced apart from the high voltage electrode, and a plurality of turning flow paths inclined with respect to an axial direction of the electrode part between the high voltage electrode and the ground electrode.

The invention relates to the technical field of seawater desalination, and provides a falling film condenser of a low-temperature multi-effect distillation seawater desalination system, a heat exchange tube support frame is arranged in a condenser shell, five groups of water chambers are arranged on the heat exchange tube support frame, and the water chambers are divided into two layers, two groups of upper layers and three groups of lower layers; the water chamber comprises a first channel heat exchange tube bundle set, a second channel heat exchange tube bundle set and a spraying tube bundle, the first channel heat exchange tube bundle set and the second channel heat exchange tube bundle set comprise a plurality of heat exchange tube bundles, the first channel heat exchange tube bundle set is arranged on the lower side of the second channel heat exchange tube bundle set, and the spraying tube bundle is arranged on the upper side of the second channel heat exchange tube bundle set. According to the heat exchange tube bundle assembly, the problems that in a conventional design, a heat exchange tube bundle is small in heat exchange area, low in waste heat recovery rate, tedious in leakage inspection and replacement, extremely prone to scouring and electrochemical corrosion and the like are solved.

The invention relates to an industrial hydrogen production conversion furnace device, comprising a furnace body, a base and a reaction mechanism, the lower end of the furnace body is equipped with a base, the bases are evenly arranged along the circumference of the furnace body, and the lower end of the base is connected to the existing ground , The upper end of the furnace body is provided with a reaction mechanism. The present invention adopts a combined design concept for industrial hydrogen production. The whole device adopts a flexible connection structure to facilitate disassembly and cleaning work quickly, which in turn facilitates regular maintenance and cleaning of the device. At the same time, the structure of the reaction between the raw material gas and the catalyst adopts an S-shaped structure, which can increase the length of the flow path of the raw material gas, so that the contact and reaction between the raw material gas and the catalyst are more sufficient, thereby increasing the production of hydrogen. output and improve the utilization rate of raw gas.