This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
煐 combines 火 (fire) with 英 as a phonetic component. The exact historical meaning is uncertain, but it likely relates to fire or brightness.
The left side is fire 火, and the right side is 英 (which can suggest brilliance). Picture a brilliant fire, but remember the exact meaning is unclear.
For エイ, imagine the letter 'A' glowing in the fire: 'A' -> エイ, and the fire makes it shine.