20results about How to "Small flow resistance" patented technology

The utility model provides a kind of etching cavity for realizing process gas quick switching, and etching cavity includes plasma source chamber and reaction chamber, and the upper surface of reaction chamber is equipped with the gas inlet of process gas;Quick gas replacement device includes the gas pipeline, gas control assembly and gas inlet pipeline that are sequentially communicated along process gas gas inlet direction;Gas pipeline is communicated with process gas gas source, and gas inlet pipeline is communicated with gas inlet;Gas control assembly includes the input, gas inlet valve, flow controller, process gas branch and output that are sequentially communicated along process gas gas inlet direction;Input is communicated with gas pipeline, and output is communicated with gas inlet pipeline;Gas control assembly is also equipped with fixed plate, and fixed plate is installed in plasma source chamber, and the input, gas inlet valve, flow controller, process gas branch and output are sequentially installed in the fixed plate.The utility model solves the problem that deposition gas and etching gas are difficult to quickly switch and accurately control in quick alternate process.

This utility model relates to a stator-rotor assembly and a powder-liquid mixing device. A stator-rotor assembly includes at least one stator and at least one rotor, the rotor rotating relative to the stator to shear the material flowing through the assembly. The structure of a single stator includes a first disc with several flow holes along the circumference on its end face for material flow. The structure of a single rotor includes a second disc with several notches along the circumference on its end face for material flow; each notch is hollowed out, thus forming independent blades between adjacent notches. By configuring the stator and rotor, the shearing consistency of the stator-rotor assembly on the material can be improved, thereby increasing the dispersion efficiency; simultaneously, the small overlap area between the stator and rotor reduces the heat generation of the stator-rotor assembly.

The utility model relates to the technical field of internal combustion engines, and particularly discloses a low-resistance internal combustion engine impedance composite silencer which comprises a protection plate, an inlet, an outlet and a composite silencing assembly. The inlet and the outlet are formed in the two ends of the protection plate, and the composite silencing assembly is arranged in the protection plate. The inner penetrating pipe is detachably connected based on an inlet and an outlet, the first-stage resistant cavities are symmetrically arranged on the periphery of the inner penetrating pipe, a second-stage resistant cavity and a sound absorption cotton cavity are formed between the first-stage resistant cavities and the protection plate, the first-stage resistant cavities are symmetrically arranged based on the center line of the second-stage resistant cavity, and the second-stage resistant cavities are symmetrically arranged based on the center line of the second-stage resistant cavity. A plurality of penetrating holes for gas to enter the first-stage resistant cavity, the second-stage resistant cavity and the sound absorption cotton cavity are formed in the inner penetrating pipe, and the volume of the cavity in the first-stage resistant cavity is smaller than that of the cavity in the second-stage resistant cavity.

The utility model relates to valve technical field, and disclose a kind of pressure reducing type backflow preventer, including valve body, drain valve seat, drain valve flap, long valve rod, fixed screw, valve cover, the valve body is provided with drain valve seat, the drain valve seat inside is provided with drain valve flap, the drain valve flap upper side is provided with long valve rod, the valve body upper side is provided with valve cover.The pressure reducing type backflow preventer, by first valve seat, first valve flap, first main valve rod, first spring seat, first spring and first hexagon nut are assembled to it before being loaded into valve body, subsequent and present an integral loading into valve body inside, greatly shorten assembly time, also suitable for the assembly in the valve body of smaller volume, the unique flow passage design of two-stage check valve, small flow resistance, open and close speed is fast, can effectively prevent the damage of sudden back pressure rise to valve and pipeline, limit pressure water backflow or siphon backflow, with mute function, effectively prolong the service life of valve.

This application relates to a heat exchanger and a thermal management system. The heat exchanger includes a flow guide plate with first flow guide grooves. Adjacent first flow guide grooves form multiple flow splitting gaps. The first flow guide groove is formed by either a straight groove segment or a curved groove segment alone, or by alternating arrangements of both. The straight groove segment includes multiple staggered channels connected sequentially along its own centerline, with adjacent staggered channels arranged in a direction perpendicular to the centerline of the straight groove segment. The flow guide plate also has multiple second flow guide grooves and flow guide protrusions. The flow guide protrusions divide the area of ​​the cold flow channel layer between the first and second flow guide grooves into multiple flow guide channels. The flow area of ​​the flow guide channels, the flow area of ​​the first flow guide groove, and the flow area of ​​the second flow guide groove are all equal. The heat exchanger and thermal management system provided by this application solve the problem of thermal stress concentration in the heat exchanger caused by inconsistent heat exchange effects at different locations in the cold flow channel layer.

The utility model discloses a motor casing, motor assembly and vehicle belong to vehicle technical field, and this motor casing is provided with oil inlet flow channel, oil outlet flow channel, liquid inlet flow channel, first liquid outlet flow channel and second liquid outlet flow channel, and the outlet of oil inlet flow channel is adapted to communicate with the oil inlet of oil cooler, and the import of oil outlet flow channel is adapted to communicate with the oil outlet of oil cooler, and the outlet of liquid inlet flow channel is adapted to communicate with the liquid inlet of oil cooler, and the import of first liquid outlet flow channel is adapted to communicate with the liquid outlet of oil cooler, and second liquid outlet flow channel communicates with liquid inlet flow channel, and the motor casing has fluid transmission function, can reduce the use of external pipeline, is favorable to save pipeline cost, and can reduce the connecting operation of pipeline, is favorable to assembly cost, can also reduce the occupied space of pipeline, is favorable to save the layout space of whole vehicle, is convenient for the arrangement of motor assembly in the car, and additionally can shorten the transmission path of fluid, reduce flow resistance, improve the transmission efficiency of fluid.

The utility model provides a kind of cement precast slab component, it is related to building wall water seepage prevention technical field, including component main board, limiting small column distributed in component main board inside, concave-convex structure distributed in the outside of component main board, screw mounting hole being arranged on component board, limiting small column, screw mounting hole coaxial arrangement, screw mounting hole is located on limiting small column.The utility model compared with prior art has realized completely avoided the waterproof layer surface support mode of poor adhesion, solves the construction technology common fault problem that can simultaneously ensure the adhesion between each structure layer and waterproof long-term reliable, improves the technical scheme of waterproof wall surface decoration construction quality, also provides the advantage that necessary construction condition can be provided for the waterproof layer that can be formed by the waterproof material with strong fluidity and permeability under wall surface pressure flow.

This utility model discloses a filter element and a filter for adhesive solutions. A filter element seat is provided at the inlet end of the outlet pipe, and a filter element is installed on the filter element seat. The inlet of the outlet pipe communicates with the inner cavity of the filter element. A filter element cover is provided at the top of the filter element, and a lower sleeve is provided at the bottom of the filter element. The lower sleeve is sealed and installed on the inlet end of the outlet pipe. The filter element includes an outer frame, an inner frame, and a jacketed filter cylinder. The jacketed filter cylinder is located between the outer frame and the inner frame. Both the outer frame and the inner frame have several mesh openings. In a horizontal projection plane, the jacketed filter cylinder is a corrugated closed cylinder, with the crests of the jacketed filter cylinder fixedly connected to the inner side of the outer frame, and the troughs of the jacketed filter cylinder fixedly connected to the outer side of the outer frame. The beneficial effects of this utility model are: the filtration area of ​​the filter element is 3-4 times larger than that of ordinary cylindrical filter elements, reducing the flow resistance of the filter element, improving the filtration efficiency, having a larger dirt holding capacity, and a longer filter element cleaning cycle.

This utility model discloses a heat exchange device and an electrical cabinet. The heat exchange device is used in a cabinet with a parallel cabinet surface and includes a shell and a heat exchange unit. A receiving cavity is formed inside the shell, and the shell has an exhaust port and a first air inlet. The heat exchange unit is placed in the receiving cavity. The heat exchange unit has an inner cavity communicating with the corresponding exhaust port and a cooling fan installed at the exhaust port. It includes two heat exchange sections and two baffles perpendicular to the X-axis direction. The two heat exchange sections are inclined relative to both the Y-axis and Z-axis directions. The two baffles connect the two heat exchange sections at their respective ends along the X-axis direction. The inner cavity is connected to the first air inlet only through air ducts. The cooling fan drives airflow from the first air inlet through each air duct to the exhaust port. The electrical cabinet includes the above-mentioned heat exchange device. This application still has high heat dissipation efficiency when the cabinets are parallel.

This utility model relates to dishwashers, specifically providing a water cup assembly and a dishwasher, aiming to solve the problem of insufficient water intake in existing dishwasher water pump inlet structures, which leads to air or foam easily entering the water pump, causing cavitation and affecting the stability and reliability of the system operation. To this end, the water cup assembly of this utility model includes: a water cup with a downwardly recessed first groove; an insert disposed within the first groove to restrict the water flow path within the first groove; the insert has a notch, allowing water in the first groove to flow along the notch. The notch in this utility model increases the water intake in the first groove, helping to form a stable water seal layer in the water tank, effectively preventing air from entering the washing pump and preventing cavitation, thereby improving the operational stability and reliability of the washing system. Simultaneously, the notch structure of the insert reduces material usage while meeting functional requirements.

This utility model relates to the field of three-way valve technology, and more particularly to a three-way bullet valve, comprising a valve body and a valve core. The valve core includes a valve seat, a valve core plug, a valve stem, and a actuator. The valve seat has a first port, a second port, and a third port. The valve core plug is disposed within the valve seat and is used to control the opening or closing of the first port, the second port, and the third port. The valve stem is connected between the valve core plug and the actuator. The actuator drives the valve core plug to move along the valve seat via the valve stem. This utility model uses the actuator to push the valve stem to make linear motion, and the valve stem drives the valve core plug to slide within the valve seat, so that the first port is connected to the second port; the second port is connected to the third port; and the first port, the second port, and the third port are connected. By controlling the position of the valve core plug, it can realize the functions of one inlet and one outlet, one inlet and two outlets, or two inlets and one outlet merging. It also has advantages such as low flow resistance, fast switching, and reliable sealing, and is especially suitable for high-frequency, high-precision fluid control applications.

This utility model relates to the field of power battery technology, specifically providing a connector assembly, a cooling system, and electrical equipment. The connector assembly includes a connecting plate, a connecting pipe, and a piping. The connecting pipe is located on a first side of the connecting plate and includes a housing and a first accommodating cavity formed by the housing. The piping is located on a second side of the connecting plate and has a second accommodating cavity. At least a portion of the housing is located within the second accommodating cavity. A valve core is located within the first accommodating cavity and is movable within it. An elastic element is located within both the first and second accommodating cavities. The valve core includes an integrally formed support member and a sealing ring. The diameter of the support member gradually increases towards the piping and abuts against the elastic element. This utility model can improve sealing reliability, reduce flow resistance, and reduce costs.

A waterproof wall structure, relating to the field of building wall waterproofing technology, sequentially includes a wall base, a cavity waterproof layer, a precast cement slab component, a bonding layer, and a block finishing layer. Injection port fittings and vent fittings are respectively installed at the lower and upper parts of the wall base. A sandwich layer accommodating the cavity waterproof layer is formed between the precast cement slab component and the wall base. The material constituting the cavity waterproof layer is injected into the sandwich layer through the injection port fittings to form the cavity waterproof layer. Compared with existing technologies, this invention has the advantages of completely avoiding waterproof layer support methods with poor adhesion, solving the common construction problem of ensuring adhesion between structural layers and long-term reliable waterproofing, improving the technical solution for waterproof wall decoration construction quality, and providing the necessary construction conditions for using highly fluid and permeable waterproof materials to form a waterproof layer under pressure on the wall surface.

This application provides a centrifugal fan and electronic device, relating to the field of fan technology. The centrifugal fan provided by this application includes: a volute housing, including an air inlet surface along its own axial direction; fan blades disposed within the volute housing; a first air outlet located on a first sidewall in the radial direction of the volute housing; and an air inlet located on the air inlet surface and directly opposite the fan blades. The edge of the air inlet is constructed as an annular inclined surface formed by splicing multiple arc-shaped inclined surfaces. At least two of the multiple arc-shaped inclined surfaces have different inclination angles. The multiple arc-shaped inclined surfaces include a first arc-shaped inclined surface, which corresponds to the first air outlet along the radial direction of the fan blades. The inclination angle of the first arc-shaped inclined surface is greater than or equal to 120° and less than or equal to 130°, and the inclination angle is the angle between the arc-shaped inclined surface and the air inlet surface. This application provides a centrifugal fan and electronic device that can improve air intake efficiency and reduce noise.

The utility model belongs to the technical field of ball valve, especially a kind of high-efficiency ball valve;Valve body, inner cavity;Valve seat, set in one side of valve body;Spherical valve core, set in the cavity of valve body;Valve stem, one end is set in the top of one side of spherical valve core, the other end extends to the outer portion of the side wall of valve body;Handle, connected with valve stem;First sealing ring is tightly abutted with spherical valve core by double spherical structure of inner sealing lip and outer sealing lip, and multiple-stage sealing is formed by cooperating supporting part and sealing groove, can effectively block fluid from the gap between lining and valve core leakage;Second sealing ring adopts the cross section design of elliptical symmetry distribution and is embedded in sealing groove, greatly reduces the risk of leakage, adapts to complex working conditions such as high pressure, high flow rate;Lining I, lining II and spherical valve core middle part are all provided with through hole, ensure that fluid flow path is smooth, reduce flow resistance, while improving the service life of ball valve, ensure the efficient flow performance of ball valve.

The utility model belongs to the field of multi -chip parallel heat dissipation module, concretely relates to a kind of multi -chip parallel heat dissipation module with manifold type heat dissipation cold head, including the main chip cold head and the auxiliary chip cold head being installed in the outside of mainboard, the module mechanism is jointly provided on the main chip cold head and auxiliary chip cold head, the upper end of the auxiliary chip cold head is equipped with import head, the upper end of the auxiliary chip cold head is equipped with export head, the upper end of the auxiliary chip cold head is equipped with bidirectional head.The utility model is equipped with main chip cold head, auxiliary chip cold head and circulating pipe etc. structure on mainboard, refrigeration component is highly integrated, compact structure: manifold function is integrated in auxiliary cold head interior, independent manifold, excess joint and connecting piece are saved, system volume and leakage point are significantly reduced, and parallel flow path design reduces flow resistance, help cooling liquid more evenly distribute to each main chip cold head cold head, improve the consistency of overall heat dissipation performance, so that cooling efficiency can be guaranteed while reducing volume.

The present application relates to a kind of diamond alloy heat-dissipating cold plate, it includes the substrate made of diamond alloy, cover plate, two connecting rings and two water taps;The substrate is opened with accommodating cavity, the accommodating cavity is provided with fin, the fin is surrounded with retaining wall, and the four around of the fin and the retaining wall are all left with gap to form flow channel;The cover plate is capped at the accommodating cavity opening of the substrate, and is sealed with the retaining wall Connection, form sealed heat exchange cavity;Two the connecting rings are set on the cover plate, and are communicated with the heat exchange cavity;Two the water taps are communicated with two the connecting rings respectively, for the in and out of cooling liquid.The present application has the effect of high heat conduction efficiency, strong structure adaptability, reliable sealing and stable heat dissipation performance.

This utility model discloses a heat exchange plate with a raised structure and a plate heat exchanger. In the heat exchange zone, the plate has several straight corrugations protruding from one side of the plate plane. Several raised structures extend along one or both sides of these corrugations, intersecting with adjacent straight corrugations. By extending these raised structures, two different types of fluid channels are constructed on both sides of the plate, achieving an asymmetrical design of the fluid channels and meeting the different performance requirements of the fluid channels on both sides. Simultaneously, the raised structures expand the contact area between the fluid channel on one side and the adjacent heat exchange plate, increasing the plate strength and thus improving the pressure resistance of the plate heat exchanger.