1005results about How to "Small flow resistance" patented technology

A pulsed breathing device has a base unit containing a motor and control circuit and a detachable head unit containing a valve, driven by the motor, which can interrupt the flow of air being breathed.

An RTM molding method comprising disposing a reinforcing fiber substrate in a cavity of a mold consisting of a plurality of dies, clamping the mold, and thereafter injecting resin to complete molding, characterized in that divided areas with respect to the surface direction of the reinforcing fiber substrate are assumed, each divided area is one in which injected resin expands over the entire surface in the area and can be substantially uniformly impregnated in the thickness direction of the substrate, and resin introducing paths are formed for respective assumed divided areas for introducing the injected resin into the respective divided areas; and an RTM molding device. When a relatively large molded product is to be molded, a molding step from resin injection to impregnating/curing can be implemented at high speed without generating a non-resin-flowing area, thereby enabling a high-quality molded product to be produced free from voids, etc., with a molding time shortened and production speed and volume increased.

The invention relates to an integrated microfluidic chip for capture of cancer cells in whole blood. The integrated microfluidic chip for capture of cancer cells in whole blood comprises three inlets, an erythrocyte lysis unit, a leucocyte capture unit, a cancer cell capture unit and an outlet, wherein the three inlets, the erythrocyte lysis unit, the leucocyte capture unit, the cancer cell capture unit and the outlet are connected orderly. The leucocyte capture unit comprises a first diverter, a soft magnetic microcolumn array and permanent magnets. The first diverter is connected with the soft magnetic microcolumn array. The permanent magnets are arranged at two sides of the soft magnetic microcolumn array. The cancer cell capture unit comprises a second diverter and a capture microstructure array, wherein the second diverter and the capture microstructure array are connected orderly. Compared with the prior art, the integrated microfluidic chip for capture of cancer cells in whole blood has the advantages of high integration degree, simple operation, high cell capture efficiency, simple manufacture processes and the like.

An electric operating apparatus for a vehicle including an operational member operated in accordance with a traveling request or a braking request of a driver; and a reaction force adjuster that can electrically adjust a reaction force of the operational member; and wherein a driving force or a braking force is electrically controlled in accordance with a requested operation applied to the operational member against the reaction force; comprises (a) an operational information detecting device for detecting operational information concerning a requested operation applied to the operational member by the driver; (b) an environmental information detecting device for detecting environmental information concerning a driving environment of the vehicle; (c) a target pattern setting means for setting a target pattern concerning the requested operation based on the environmental information; and (d) a driving support means for controlling the reaction force adjusted by the reaction force adjuster based on the operational information so that the requested operation is performed in accordance with the target pattern.

The invention discloses a spiral static mixer which is applied to mixing of multiple materials and particularly mixing of high-viscosity materials. The spiral static mixer comprises a shell, mounting flanges, left rotating blades and right rotating blades and is characterized in that the mounting flanges are respectively arranged at the two ends of the shell, the left rotating blades and the right rotating blades are in multiple-spiral blade structures and sequentially and alternately arranged from an inlet of the shell to an outlet of the shell, the adjacent left rotating blades and right rotating blades are fixedly connected at the periphery in a staggering manner, and a washing lifting ring is connected at one end of a blade group formed by the left rotating blades and the right rotating blades. The spiral static mixer provided by the invention has the advantages of simple structure, high mixing efficiency, convenience and fastness in installation, low cost, convenience in washing and suitability for long-time working; a mixed blade unit can be replaced; and the spiral static mixer is more widely applied to mixing of the high-viscosity materials in the chemical engineering industry.

To obtain adsorbent (10), meltable core which melts away during baking and binder are added to powdery activated carbon having microscopic pore whose size is less than 100 nm together with water and mixed together, then this mixture is molded into hollow cylindrical shape whose outside diameter is 4˜6 mm and baked. Although macroscopic pore whose side is 100 nm or more is formed by the meltable core, proportion of volume of the macroscopic pore to volume of the microscopic pore is adjusted to 65%˜150%. The adsorbent (10) has shape in cross section formed from cylindrical wall (10A) and cross-shaped radial wall (10B), and thickness of each part is within a range of 0.6˜3 mm. The adsorbent (10) of the present invention can satisfy adsorbing/desorbing performance of fuel vapor, flow resistance as a canister and strength of the adsorbent at the same time.

A heat radiation device with cooling liquid consists of a heat absorbing body, a heat radiation body, a cooling liquid channel and driving unit of cooling liquid. It is featured as connecting multiple passageway being arranged along heat absorbing body center to body periphery with channel of cooling liquid and connecting two adjacent passageways to each other, setting two branches leading to far point from heat absorbing body center on passageway near heat absorbing body center to let cooling liquid flow to passageway far from heat absorbing body center along two said branches.

The invention relates to a fuel cell vehicle cooling system. A first temperature sensor and a second temperature sensor are respectively arranged at an inlet and an outlet of a fuel cell stack; signaloutput ends of the first temperature sensor and the second temperature sensor are respectively connected with the fuel cell controller; the input end of the water pump is connected with a fuel cell stack outlet; the output end of the water pump is connected with the input end of the first temperature control valve; a first output end of the first temperature control valve is connected with a cooling liquid inlet of the fuel cell stack; the second output end of the first temperature control valve is connected with the input end of a second temperature control valve, the first output end of thesecond temperature control valve is connected with a cooling liquid inlet of the fuel cell stack through a heat dissipation device, and the second output end of the second temperature control valve is connected with a cooling liquid inlet of the fuel cell stack through a heater. According to the invention, the temperature of the cooling liquid flowing into the galvanic pile can be maintained within a set range in different external environments, so that the chemical reaction in the galvanic pile is ensured to be normally carried out, and power energy is provided for the whole vehicle.

The invention discloses a micro-channel cold plate structure. The micro-channel cold plate structure comprises a substrate and a micro-flowing-channel network processed on the substrate; and the micro-flowing-channel network comprises a shunting structure, a partial micro-channel network and a confluence structure in a combined manner. The micro-channel cold plate structure has the beneficial effects as follows: reasonable flow deploying of a cooling working medium is realized through T-shaped flowing channels, and then heat transfer is strengthened by tree-like and parallel micro channels; finally, energy re-confluence is realized through inverse Y-shaped two-furcation flowing channels, so that high channel distribution uniformity is realized, and the network can be uniformly distributed in the whole to-be-dissipated region; the overall micro-fluid network is in all-parallel-connection way, so that high temperature consistency is achieved; the cooling working medium flows smoothly in the flowing channels, so that low flowing resistance is formed; and furthermore, the micro channels in each group of the partial micro-channel network are arranged in parallel, and the channels are more in branches and high in span, so that the process can be realized conveniently, partial pressure loss can be lowered, and the heat dissipation performance of the micro-channel cold plate can be further improved.

The present invention is a heat sink with guiding fins comprising a base with a plate part, wherein each side of a pair of two opposite sides of the plate part comprises a declining part; and two groups of fins expanded upwardly from each said declining part, wherein a channel whose top width is wider than its bottom width is form by the tow groups of fins and the base and there is a gap properly set between each two fins. By doing so, the heat sink can guide the flow generated by a fan to form a streamline with pressure and so obtains smaller wind resistance and better heat dissipation for the heat sink.

A mixer for synthetic quartz includes a mixing barrel (1), a power transmission system (2), a mixing system (3), and multiple material receiving receptacles (4). The power transmission system is provided above the mixing tank. The mixing system is provided inside the mixing tank. The power transmission system is used to drive the mixing system to move. An opening is arranged at each of two ends of the material receiving receptacle. The multiple material receiving receptacles (4) are arranged at a top portion of the mixing tank, and end portions of two adjacent material receiving receptacles are spaced apart from each other without contact there between. A resin experiences low flow resistance in the material receiving receptacle, and thus can fall smoothly without accumulating in the material receiving receptacle. Moreover, the material receiving receptacle can be cleaned easily.

The heat exchange tube comprises of tabulations with different sections: circular tube (base tube), elliptical tube section, oblateness tube section, egg-shaped tube section, the half moon tube section, triangle tube section, transformation tube section and transition tube section. The strengthened heat exchange tube comprises at least three of above said tube sections with other five tube sections being assorted. The different sections can be combined randomly or arranged according to following sequence periodically: circular tube - transition tube - elliptical tube (or oblateness tube, egg-shaped tube, half moon tube, triangle tube) - transformation tube - elliptical tube (or oblateness tube, egg-shaped tube, etc.) - transformation tube - elliptical tube, ect. The combined tube strengthens heat exchange 30-500% but the flow resistance is only raised 20-100%. The invented tube possesses the advantages of not easy of scaling, easy of cleaning and reducing vibration.

A complex flow-path heat exchanger having U-shaped tube and cantilever combined coil, which can achieve, in this type heat exchanger, a simple construction, a complex flow of steam within the same one heat exchange shell body, a high heat exchange efficiency, and a low energy loss. The technical gift of the present invention is that, after entering into the heat exchanger, steam firstly effects heat exchange on the U-shaped tube flow path shell side to be cooled and condensed, thereafter entering into flow path tube side of the cantilever combined coil, which are disposed within the same one shell, for a secondary heat exchange, and subsequently flowing out of the heat exchanger after being subcooled. Such steam-water heat exchanger having a complex flow path are advantageous in a small steam flow resistance of the U-shaped tube flow path shell side; a higher condensate water flow velocity in the cantilever combined coils flow path tube; a high heat exchange coefficient; good coordination of the temperature difference fields of the hot and cold fluids in the heat exchanger; and a high heat exchange efficiency. Therefore, the present heat exchanger can be a new generation product relative to the currently-used conventional low-temperature, low-pressure and corrosion-free heat exchangers.

The invention discloses a novel low-cost stack-up array liquid refrigeration semiconductor laser and a manufacturing method thereof. The laser comprises a lower base plate, an anode block, micro-refrigeration modules with chips, a cathode block, an upper pressing block and a liquid refrigeration block which are arranged from bottom up in turn. The micro-refrigeration modules with chips are two ormore and stacked up to form a multiple bar series module group, and the lower base plate is provided with side plates on both sides; the anode block, the multiple bar series module group and the cathode block are sequentially stacked up and arranged between the two side plates on the lower base plate, the upper pressing block is arranged on the upper side of the cathode block and fixedly connectedwith upper ends of the two sides plates of the lower base plate, and the upper side of the upper pressing block is fixedly connected with the liquid refrigeration block. The laser has simple manufacturing method and low production cost, and effectively reduces flow resistance of cooling fluid, causes obviously reduced pressure drop of the cooling fluid, has easier sealing of the cooling fluid andstrong heat emission capability, effectively prolongs service life of the semiconductor laser and improves reliability by replacing a traditional micro channel structure with fins.

The present invention discloses composite microporous polytetrafluoroethylene film for air purification and its production process. The composite microporous polytetrafluoroethylene film is one kind of capillary microporous film comprising microporous polytetrafluoroethylene film to ensure the filtering efficiency and its composited protecting and supporting material. The protecting and supporting material is polymer or inorganic fiber material. The microporous polytetrafluoroethylene film has thickness of 3-20 microns and pore size of 0.050-10.0 microns, the protecting and supporting material has the thickness of 10-3000 microns. The present invention has the features of low cost, easy manufacture and simple technological process, etc.