7results about How to "Improve temperature rise" patented technology

The application discloses a preparation method of a polyurea photo-thermal anti-icing coating and belongs to the technical field of photo-thermal anti-icing. The application is based on silica / polyurea composite particles and carbon materials, and super-hydrophobicity and relatively high photo-thermal conversion efficiency are obtained. The method is characterized in that silica nanoparticles are combined into polyurea molecules to form silica / polyurea composite particles; then the composite particles are combined with graphite microparticles and uniformly dispersed in polysiloxane, and a super-hydrophobic photo-thermal coating with excellent wear resistance and durability is developed. The coating surface has high photo-thermal conversion efficiency, can obviously increase temperature under the irradiation of sunlight, can delay the icing time and reduce the ice adhesion strength, and thus better anti-icing and de-icing effects are achieved.

This invention relates to the field of motor design and manufacturing technology, and provides a motor structure that solves the problems of poor heat dissipation and easy local overheating in the end windings. The motor structure includes a stator core and windings. The windings include a winding slot portion assembled within a stator core slot and a winding end portion extending beyond the end face of the stator core. The cross-sectional width W of the winding end portion is... end The cross-sectional width W of the portion inside the winding slot is greater than the width of the winding slot. slot And W end >W end,min W end,min This refers to the minimum cross-sectional width of the end winding, determined based on the target temperature difference constraint between the end winding and the slot winding. This invention achieves axial temperature uniformity of the winding without adding a cooling system, eliminating localized hot spots and improving power density and insulation life.

The invention relates to an electric power connector which comprises an insulation body and two electric power terminals, the insulation body is provided with a butt joint groove penetrating forwards, and the two electric power terminals are located on the two transverse sides of the butt joint groove respectively. Each power terminal comprises a first terminal piece and a second terminal piece, the second terminal piece is attached to the transverse outer side of the first terminal piece, and the first terminal piece comprises a first base part, a plurality of first elastic arms extending forwards from the first base part and first contact parts bent in an arc shape from the tail ends of the first elastic arms; the second terminal piece comprises a second base part, a plurality of second elastic arms extending forwards from the second base part and second contact parts bent in an arc shape from the tail ends of the second elastic arms, the second contact parts are provided with openings, and the first contact parts partially extend into the openings. The first contact part located on the inner side is contained in the opening of the second contact part located on the outer side, so that the lateral sizes of the first elastic arm and the second elastic arm are as large as possible, current passing is increased, and the temperature rise problem is solved.

The application provides a composite medium high-temperature heat pump circulation system and method. The composite medium high-temperature heat pump circulation system comprises: a regenerator connected with a separator; a primary compressor connected with a first outlet of the regenerator and used for preliminarily compressing a nitrogen-poor gas-phase working medium; an ejector, an injection inlet of which is connected with an outlet of the primary compressor, and a material inlet of the ejector is connected with a second outlet of the regenerator; a secondary compressor connected with an outlet of the ejector; and a condenser connected with an outlet of the secondary compressor and used for heat exchange, wherein high-temperature hot water or steam generated through heat exchange is directly delivered to a next device; and supercritical fluid discharged from the condenser is returned to the regenerator for heat exchange and then reenters the separator. By introducing appropriate nitrogen into carbon dioxide as an auxiliary component, the temperature rise amplitude of the mixed working medium in the compression process can be effectively improved.

The utility model relates to motor technical field especially a kind of shaftless permanent-magnet motor rotor support.The utility model discloses a rotor brake disc for cooperating with brake device, the side of rotor brake disc is fixed with cylindrical adapter section, the end surface of adapter section is fixed with first ring plate, there is second ring plate between first ring plate and rotor brake disc, the outer diameter of first ring plate and second ring plate is same, and the outer end surface of first ring plate and second ring plate is welded with magnetic pole mounting ring, and magnetic pole mounting ring is used to install magnetic pole.The shaftless permanent-magnet motor rotor support is connected with the cooperation of brake rotor by rotor brake disc, its structure design includes cylindrical adapter section for transmitting torque and supporting rotor assembly, first ring plate and second ring plate jointly constitute double-layer annular support structure to enhance overall stiffness, and through the design of same outer diameter, ensure that stress is uniform.

The invention relates to the technical field of heat exchange, in particular to an air source heat pump heat exchange system which comprises a heat exchange tank, a heat exchange cylinder is fixedly connected to the inner side of the heat exchange tank, and the space between the heat exchange tank and the heat exchange cylinder is filled with a heat preservation material.The air source heat pump heat exchange system can be flexibly adjusted according to the use condition of the air source heat pump heat exchange system; floor heating water can rapidly pass through the pipe array in the longitudinal direction in a mild climate or a scene requiring rapid temperature rise of a user and in a longitudinal short-circuit flow channel mode, the retention time is greatly shortened, the flow resistance is reduced, and the floor heating water can circuitously flow in the heat exchange cylinder in a severe cold working condition or a scene requiring large temperature difference and in a snakelike long-path flow channel mode, so that the heat exchange efficiency is improved. The residence time is remarkably prolonged, low-temperature return water and a high-temperature refrigerant are in full contact for heat exchange, the heat exchange area can be utilized to the maximum extent, the temperature rise amplitude of a single cycle is improved, the load of a heat pump compressor is reduced, high-energy-efficiency stable operation is achieved, and rapid heat supply and flexible adjustment are achieved.

This application relates to a high-frequency relay, including an electromagnetic part comprising multiple metal components; a contact portion disposed on one side of the electromagnetic part along a first direction, the contact portion including a moving spring assembly and a stationary spring; a shielding cover disposed on the side of the stationary spring facing the electromagnetic part; at least a portion of the stationary spring is located inside the shielding cover, and at least a portion of the moving spring assembly passes through the shielding cover; wherein the shielding cover has a grounding terminal; one end of a conductive connector is electrically connected to at least one of the multiple metal components, and the other end is electrically connected to the shielding cover and grounded. By providing a conductive connector connecting the metal components of the electromagnetic part and the shielding cover, a grounding path is provided for the metal components in the electromagnetic part, thereby eliminating parasitic coupling and secondary radiation effects caused by the proximity of the metal components in the electromagnetic part to the high-frequency operating contact portion, thus reducing crosstalk and interference coupling of the electromagnetic part to the high-frequency signal of the contact portion, and ensuring the integrity and transmission efficiency of the high-frequency signal.