You might try this - use Google - select Images on the top left of the frame.
Enter Cooker Hinges (or perhaps Grill Door hinges)
Look at the images that come back and when you see something familiar - follow the link.
It may work...
Failing that online traders like eSpares may be able to help
Enter Cooker Hinges into YouTube
Good luck...
Peccavi
July 2013