2results about How to "Reduce working temperature rise" patented technology

The application belongs to the technical field of vacuum arc-extinguishing chambers, and particularly relates to a large-capacity vacuum arc-extinguishing chamber and a working method. The large-capacity vacuum arc-extinguishing chamber comprises a vacuum insulation shell, a contact system arranged in the vacuum insulation shell, a rated current through-flow branch and an arc current through-flow branch arranged in parallel, a dynamic main contact and a static main contact matched with each other, a part of the static main contact penetrating through the vacuum insulation shell and exposed to an external environment to form a heat dissipation structure, an arc current through-flow branch comprising an inner arc contact, an outer arc contact and a magnetic field assembly electrically connected with the inner arc contact and the outer arc contact and used for generating a magnetic field for controlling an arc during opening and closing, and a conductive rod arranged at the upper and lower ends of the vacuum insulation shell and electrically connected with the contact system. The large-capacity vacuum arc-extinguishing chamber can meet the requirements of high rated current, large breaking current, high efficient heat dissipation and high voltage insulation, and overcomes the defects of mutual restriction of multiple performances in the prior art.

A copper-iron co-fired inductor and its preparation method are disclosed. The copper-iron co-fired inductor comprises: a square magnetic core, the surface of which is covered with an insulating layer; two flat copper wires, which are arranged parallel to each other on the surface of the magnetic core covered with the insulating layer and adhere to three adjacent faces of the square magnetic core, with the ends of the flat copper wires extending to adhere to a fourth face of the square magnetic core; and a shielding layer, which is adhered to the three surfaces of the square magnetic core with the flat copper wires attached, and is pressed together with the square magnetic core, the insulating layer, and the flat copper wires to form an integrated blank. The blank is then co-fired and sintered to form the copper-iron co-fired inductor. The present invention also provides a method for preparing the copper-iron co-fired inductor. The copper-iron co-fired inductor of the present invention, through the design of the aluminum nitride insulating layer, parallel flat copper wires, and iron-silicon-aluminum shielding layer, greatly improves heat dissipation performance.