With a lot of appliances the fabrication, often consists of some bought in parts. So it should be possible to get a replacement if not from Philips. I'd suggest unplugging it and removing the thermostat it may have some identification markings on it.
I've no idea what model you have but I found this on eBay in less than five seconds.
If it isn't the right one, you could make more searches. It shouldn't be a problem to find one. I noticed that elements were also availaable.
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