1010results about How to "Small flow resistance" patented technology

The invention discloses a heat exchanger with a micro-channel, parallel-flow and all-aluminum flat pipe welding structure. The heat exchange part of the heat exchanger is formed by arranging flat pipes consisting of aluminum extruded thin-walled sections in parallel. Compared with the prior art, the heat exchanger with the micro-channel, parallel-flow and all-aluminum flat pipe welding structure has the advantages that: 1, the heat exchange efficiency of a refrigerant and the inner walls of the flat pipes is improved by 40 percent, and the flow resistance of the refrigerant in collecting pipes of the heat exchanger is reduced by 40 percent; 2, the heat exchange efficiency of fins on an air side is improved by 40 percent, and the wind resistance of the heat exchanger on the air side is reduced by 40 percent; 3, the heat exchange performance of the whole heat exchanger is improved by 40 percent; 4, compared with the prior art, the heat exchanger consumes 40 percent less refrigerant; and5, compared with the conventional copper-aluminum structure, the all-aluminum structure endows the heat exchanger with longer service life because of no copper-aluminum potential differences. The heat exchanger adopting the flat pipes has the characteristics of capability of bearing the conventional limitation of high-pressure resistance value of the refrigerant, compact product structure, light unit weight, short process flow, high manufacturing reliability and relatively lower cost. The invention also discloses the application of the heat exchanger.

The present invention provides a scroll-type expander that simultaneously performs expansion and re-heating such that efficient expansion is realized and there is no reduction in efficiency caused by pressure loss occurring during the supply of an working fluid to the scroll-type expander, and that minimizes a difference in temperature between a stationary scroll member and a rotating scroll member, as well as a temperature distribution of a scroll wrap. The present invention also relates to a heat exchange system that uses a scroll-type expander to replace pistons in a conventional reciprocating Stirling engine or refrigerator with a pair of scroll-type compressor and expander such that the heat exchange system may be used as a Stirling engine or refrigerator. The present invention also provides a steam engine, in which a steam turbine in the conventional steam engine (Rankine system) is replaced with a scroll-type expander such that the steam cycle has both a re-heating cycle and a regeneration cycle.

The present invention discloses a heat pipe, it includes a metal tube which is equipped with a sealed chamber in itself, and the sealed chamber is filled with right amount of work fluid, the inner wall of the metal tube is equipped with capillary structure, the metal tube body is divided into evaporator section, condenser section and insulating section between said both along the length direction, the capillary structure includes the honeycomb first capillary structure installed on the insulating section of the metal tube and the second capillary structure installed on the evaporator section of the metal tube, the first capillary structure is made by metal thin slices, the bore diameter of the second capillary structure is smaller than the bore diameter of the first capillary structure. Said heat pipe is equipped with corresponding capillary structure through the requirements of the sections of heat pipes are corresponding with different capillary structures to use the best functions of the sections of heat pipe effectively.

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.

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 exchanging tube is characterized by that on its inner surface there are discontinuous internal ribs which have a certain included angle (5-85 deg.) relative to axis of tube and are inclined intwo directions. Its advantages are high heat exchange efficiency, low flow resistance and not scaling.

The invention discloses an electronic expansion valve. According to the electronic expansion valve, a piston part (4) and a valve needle part (3) are located on the same side of a valve element seat (2) so that a bypass through hole (212) can be blocked by the piston part (4) when a refrigerant flows in the forward direction, the refrigerant flows to one end of a vertical connecting pipe (52) through a valve element valve port (211), and the valve needle part (3) moves in the axial direction to adjust the open degree of the valve element valve port (211); when the refrigerant flows in the backward direction, the piston part (4) moves upwards in the axial direction to open the bypass through hole (212), and the refrigerant flows to one end of a transverse connecting pipe (51) through the bypass through hole (212). According to the electronic expansion valve, on one hand, the valve element valve port can be sealed easily by the valve needle part under the high-pressure condition when the refrigerant flows in the forward direction, and the valve needle part is prevented from being ejected open by the high-pressure refrigerant; on the other hand, the axial size and radial size of a valve seat can be reduced, and flow resistance when the refrigerant flows in the backward direction is reduced.

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.

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.