2results about How to "Avoid demagnetization" patented technology

This application relates to the field of motor technology and discloses a rotor stack and rotor. The rotor stack includes multiple first rotor laminations and second rotor laminations. The first and second rotor laminations respectively form multiple first and second magnet slots for accommodating magnets. The first and second magnet slots are axially offset and interconnected, such that the first sidewall of the first magnet slot abuts against the first sidewall of the magnet, and the sixth sidewall of the second magnet slot abuts against the second sidewall of the magnet. The distance between the first and sixth sidewalls is equal to the thickness of the magnet, thereby fixing the magnets without the need for resin potting in the magnet slots, reducing rotor production costs and improving rotor production efficiency. It also avoids magnet damage due to stress concentration. The gap formed between the sidewall of the magnet slot and the sidewall of the magnet constitutes part of the rotor cooling channel, allowing the magnets to be directly cooled by the cooling medium, avoiding demagnetization caused by high temperatures.

The utility model belongs to liquid pump technical field, including high temperature high pressure magnetic force pump body, semiconductor refrigeration mechanism, heat dissipation water tank, water level switch, alarm, bottom plate, circulating mechanism, circulating mechanism includes volute, impeller, shaft, high temperature high pressure magnetic force pump body and volute, heat dissipation water tank are fixedly installed on the bottom plate, and semiconductor refrigeration mechanism is fixedly installed in heat dissipation water tank outside one end, the outer shell outside of outer magnetic rotor and inner magnetic rotor of high temperature high pressure magnetic force pump body is fixedly installed with hollow heat dissipation shell, and heat dissipation shell is connected between volute and water tank, the utility model discloses a volute in the impeller of high temperature high pressure magnetic force pump body is powered, and the key part of high temperature high pressure magnetic force pump body is cooled for outer magnetic rotor or inner magnetic rotor through semiconductor heat dissipation mechanism, heat dissipation water tank, circulating water, and when the water is insufficient in heat dissipation water tank, can in time through the alarm prompt staff to add, effectively prevent the problem of outer magnetic or inner magnetic rotor demagnetization caused by temperature too high.