5results 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 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.

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.