423results about How to "Improve flow efficiency" patented technology

The invention provides a separable rotary valve assembly for shifting wind of a heat accumulating burning device, which configure an upper portion rotating distributing board of a rotor of the separable rotary valve assembly detachably installed on the heat accumulating burning device and disposed in a wind shifting device to a be hollow circular disc, particularly, clean gas injecting holes are disposed along the circumferential direction of the upper portion rotating distributing board to supply clean gas along the whole circumferential direction of the upper portion rotating distributing board, and a clean gas supply channel is disposed along the upper surface of a rotating gas distributing chamber at the lower part of the upper portion rotating distributing board, a fine gap within a set range disposed between the upper portion rotating distributing board and a lower portion fixed distributing board of the distributing chamber fixedly disposed on the upper portion rotating distributing board is kept to prevent friction loss, and a gas curtain is formed via the fine gap ejecting the clean gas, thereby providing a cooling function of absorbing high heat, also, a gap fine adjusting device is additionally added at the lower portion of the rotor to adjust the above fine gap.

The heat pipe of the invention includes a tube in which an evaporating portion and a condensing portion are defined; a grooved wick longitudinally and entirely disposed on an inner wall of the tube and communicating the evaporating portion with the condensing portion; a porous wick only disposed on the inner wall of the evaporating portion and covering the grooved wick in the evaporating portion; and a fiber wick in a shape of a strip, whose one end connects the porous wick and whose the other end longitudinally extends to the condensing portion.

The invention relates to a turbine nozzle ring used in turbochargers. Compressed air from an outlet of an air compressor of the turbocharger and/or an external source goes through a hollow internal cavity of the nozzle vanes or a hollow sandwich near the internal wall of an intake pipe of a vane-less spiral case and blows directly to the nozzle vane ring or main burning gas flow at a flow passage and/or an outlet of the vane-less spiral case through a ventilation groove gap cut between a vane-shaped back side (or front side) and/or a rear margin part or through circular arc-shaped ventilation gap of the outlet of the hollow sandwich near the zero-degree section of the tip of the vane-less spiral case, making the mixed air of blowing flow from the gaps and the main flow change the flow direction at the outlet of the nozzle ring and causing the change of the flow angle (namely flow section) at the outlet. The invention has the advantages of wide range of control simple structure, low cost, safety and reliability, high efficiency, straightforward control and being applicable for turbochargers and being capable of making use of external air, additional pressure and external energy to supply auxiliary power.

The invention discloses a shaft-mounted brake disc module for a high-speed train. The module comprises brake discs, a support disc and a disc hub; two sets of brake discs are provided, are coaxially laminated on the disc surfaces on the two sides of the support disc, and are clamped and locked with the support disc through first connecting structures; the brake discs are composite material brake discs with smooth disc surfaces on two sides; heat dissipating structures are arranged on the disc surfaces on the two sides of the support disc, and are laminated with the brake discs to form heat dissipating channels; and a connecting flange is arranged on an inner ring of the support disc, and is fixedly sleeved with the disc hub through a second connecting structure. Compared with a traditionaloverall brake disc, the module has the characteristics of simple structure, reliable connection, high-temperature resistance, convenience to maintain, light weight and good braking effect, reduces the energy consumption in operation and braking of the high-speed train, realizes application of a composite friction material to a high-speed train braking system, and greatly saves the high-speed train company operation and maintenance costs.

The invention discloses a hydraulic design method for a double-blade non-block centrifugal impeller. The double-blade non-block centrifugal impeller structurally comprises a front cover plate, blades and a rear cover plate. The hydraulic design method comprises the steps that (1) the main hydraulic geometrical parameters of the double-blade non-block centrifugal impeller are worked out based on a velocity coefficient method; (2) the shapes of the axial surfaces of the blades are controlled based on a quadratic Bezier curve control algorithm; (3) the molded line installation angles of the blades are controlled based on a quartic Bezier curve control algorithm; (4) optimization design is conducted on the double-blade non-block centrifugal impeller based on a non-dominated sorting genetic algorithm (NSGA) II; and (5) the double-blade non-block centrifugal impeller according with the given flow, the given lift, the given pump efficiency and the given rotating speed value is manufactured by using the data obtained in the step (1) to step (4) as the dimension parameters of the double-blade non-block centrifugal impeller. By the adoption of the double-blade non-block centrifugal impeller designed through the method, the flow capacity and the anti-twining capacity of the impeller can be improved, the internal flowing condition of the impeller is improved, and the operating stability and the hydraulic efficiency of the impeller are improved.

A micro pump using a ferro-fluid/magneto-rheological fluid to drive a working fluid is proposed. The micro pump has a body with an accommodating space and an opening that communicates with the accommodating space. A ferro-fluid/magneto-rheological fluid and a magnetic field generating unit are disposed on the body. As the ferro-fluid/magneto-rheological fluid is attracted to the magnetic field after being magnetized, the ferro-fluid/magneto-rheological fluid is deformed or shifted to drive the working fluid, so as to control the working fluid to flow in and out of the accommodating space. Accordingly, the pump is improved for its efficiency and precision to control the flow while the back flow of the working fluid is prevented.

The present invention belongs to the field of internal combustion engine turbocharging technology, in particular, it relates to a turbine nozzle ring used in turbocharger. Said invention provides the working principle of said turbine nozzle ring, and also provides the concrete structure of said turbine nozzle ring and its manufacture method.

Disclosed is a device suitable for dispensing air treatment chemicals by heating a substrate impregnated with the chemicals. The device has a heater in the form of a table where a face of the table radiates heat directly to the impregnated substrate. The substrate releases the air treatment chemical back towards the heater. A transverse air pathway permits venting of the volatile chemical. Also disclosed are methods for assembling such devices.

The invention relates to a microchannel heat exchanger capable of uniformly distributing a refrigerant flow. The microchannel heat exchanger comprises a first air collecting pipe, a second air collecting pipe, a first pipe port and a second pipe port, wherein air collecting pipe end covers are respectively arranged at the two ends of the first air collecting pipe and the second air collecting pipe; a first flow equalizing plate and a second flow equalizing plate parallel to axles of the first air collecting pipe and the second air collecting pipe are respectively arranged in the first air collecting pipe and the second air collecting pipe for dividing the air collecting pipes into first and second inner cavity parts and first and second outer cavity parts; multiple flow equalizing plate through holes are respectively formed in the flow equalizing plates; holeless baffle plates and hole baffle plates are alternately arranged in the first air collecting pipe from the direction of the first pipe port; and baffle plate through holes of the hole baffle plates are positioned on the first and second outer cavity parts. A working medium flows into the cavities through the first flow equalizing plate, uniformly enters microchannel flat pipes by the multiple flow equalizing plate through holes on the first flow equalizing plate, and enters the microchannel flat pipes through the multiple flow equalizing plate through holes on the second flow equalizing plate, so that the purpose of uniform distribution of working medium flows is realized.

The invention discloses an outdoor unit of an air conditioner. The outdoor unit comprises an outdoor unit shell, an electric control box and an isolating part, wherein the outdoor unit shell comprises a front panel; the front panel is provided with a front panel air inlet; the electric control box is arranged in the outdoor unit shell, and comprises an electric control box shell, a PCB (Printed Circuit Board) and a radiator; the PCB is arranged in the electric control box shell; the radiator is connected with the PCB; a part of the radiator extends out of the electric control box shell; the isolating part coats the outside of a part, which extends out of the electric control box shell, of the radiator; an isolating part air inlet and an isolating part air outlet are formed in the isolating part; the air inlet of the isolating part is in hermetic fit with the front panel, and the isolating part air inlet is opposite to the front panel air inlet; the isolating part air outlet is communicated with the inside of the outdoor unit shell. The outdoor unit of the air conditioner disclosed by the invention has an improved heat dissipation structure, so that the heat dissipation effect of the PCB in the electric control box is enhanced.

The invention relates to a turbine nozzle ring in a turbocharger. Pressurized air flowing out from an outlet manifold bypass of an air compressor of the turbocharger per se and/or compressed air of an external air source (or exhaust fuel gas flowing out from an outlet manifold bypass of an exhaust pipe of an internal-combustion engine) passes through the hollow cavity of a nozzle blade or a hollow interlayer nearby the inner wall of a bladeless volute inlet pipe, and jets and blows a nozzle blade ring or the interior of a bladeless volute runner and/or a main fuel gas flow in a downstream way from a blade profile back (or ventral face) and/or a through-flow slit cut at the tail edge part (a jet deflection arc guide plate is connected to the back of the tail edge slit) or an annular arc through-flow gap at a hollow interlayer outlet nearby the zero-degree section of a bladeless volute tongue tip and the jet deflection arc guide plate connected thereafter, so that the air flow formed by mixing the gap jet flow and the main flow generates flow direction deflection at the outlet of the nozzle ring to cause the change of an outlet airflow angle (namely outlet flowing section area). The turbine nozzle ring has the advantages of high control strength, simple structure, low cost, safety, reliability, high efficiency, convenience for control and applicability for the gasoline engine turbocharger, and the additional air has the functions of additional pressurization and auxiliary energy application.

A system and method for regulating pressure inside a vehicle (“cabin pressure”) with reduced noise is disclosed. The system can include a forward gate and an aft gate that can be moved from a closed position to an open position to release cabin pressure in a controlled manner. The forward gate and the aft gate can comprise one or more flow disruptors. A first portion of the flow disruptors can be fixed and a second portion can be moveable between a retracted position and a deployed in position. In the retracted position the one or more flow disruptors can reduce broadband noise through the system by smoothing air flow therethrough. In the second position, the one or more flow disruptors can create boundary layer turbulence. The boundary layer turbulence can prevent, or delay, flow separation reducing tonal noises therethrough. In this manner, flow efficiency can be increased and noise reduced.

The invention relates to a two-dimensional blade profile optimization method for a compressor considering a low Reynolds number working performance; the optimization method is characterized by comprising the following steps of: step 1: analyzing the meridional flow performance of a prototype multistage axial flow compressor at different rotating speeds; step 2: determining a key two-dimensional blade profile section to be optimized; step 3: performing parametric fitting to the key two-dimensional blade profile in step 2; step 4: analyzing the aerodynamic performance of the two-dimensional blade profile, and analyzing the aerodynamic performance of the parameterized two-dimensional blade profile to obtain the variable attack angle performance of the blade profile under a low Reynolds numberworking condition and the variable attack angle performance under a high Reynolds number working condition; and step 5: optimizing the modeling parameters of the two-dimensional blade profile, adjusting the two-dimensional modeling parameters according to the variable attack angle performance parameters of the two-dimensional blade profile obtained in step 4 at different Reynolds numbers, using agenetic algorithm to circularly iterate steps 3 and 4 until a two-dimensional blade profile design reducing loss and increasing stall margin is obtained, and then obtaining a new two-dimensional blade profile. According to the invention, the performance optimization of the two-dimensional blade profile of the axial flow compressor at different Reynolds numbers and different attack angles is realized; the designed working performance of the compressor is improved while the aerodynamic performance of the compressor at the low rotation speed working condition is improved; and the flow efficiencyis improved while the normal starting and stable working of the compressor are ensured.

A method of, and a system for, controlling and predicting the health of a torque converter clutch control system is provided. The method includes determining, via a controller, rotational input and output speeds of the torque converter and a torque converter clutch slip. The method also includes determining, via the controller, whether a set of predetermined conditions are met for predicting the health of the torque converter clutch control system. The method includes gathering a plurality of initial features of the vehicle propulsion system, determining statistical information about the plurality of initial features, and selecting at least one feature of the vehicle propulsion system based on the statistical information. Furthermore, the method includes classifying the health of the torque converter clutch control system based on the selected feature or features. In some forms, principal component analysis is used to select the feature or features used for classification.

The present invention provides a reduced emission, single cylinder engine incorporating an air flow arrangement for improving flow efficiency of the intake air drawn into the engine and the exhaust discharged from the engine.

The invention discloses an axial flow fan ternary impeller with a vein-shaped structure and a nonuniform empennage. The axial flow fan ternary impeller comprises a hub, and a connecting piece for a shaft sleeve fixed on the hub. The axial flow fan ternary impeller further comprises twisted blades and splitter blades fixedly connected to the hub; the twisted blades include suction surfaces and pressure surfaces; wing-shaped grooves are formed in the tops of the twisted blades; vein-shaped grooves are formed in the upper half parts of the pressure surfaces of the twisted blades; the wing-shaped grooves are communicated with the vein-shaped grooves through exhaust ports; winglet projections and dense winglets are arranged at the tail parts of the suction furnaces of the twisted blades; the dense winglets are arranged on two sides of the winglet projections; parabola small holes are formed in the twisted blades; the splitter blades are arranged between two adjacent twisted blades; and the heights of the splitter blades are smaller than the heights of the twisted blades by one half.

A pump impeller for use in industrial pumps of the centrifugal type is disclosed in which the vanes of the pump impeller are particularly configured to maintain pumping efficiency as the vane wears over continuous use or operation of the pump. The impeller vane is configured to continuously present an aggressive cutting surface at the leading edge of the vane even though the vane may become degraded and worn through continuous use.