Does anyone know the structure of the fireplace? Please let me know!

I have also been researching these recently. In my opinion, the fireplace is similar to our earthen stove. I am thinking that there are two reasons for not pouring water back.

1. The setting of the chimney and the bottom and side air inlets are designed to comply with air flow.

2. The interior of the fireplace should be trumpet-shaped.

In fact, I think the main thing is the air flow, but the flow should not be too strong, otherwise the heat will dissipate too quickly, so a trumpet shape is needed. You do it yourself, that's awesome. The outer shell is made of cast iron, which may be a bit troublesome, but I don’t think it’s necessary. The inner cavity is made of refractory bricks, the kind found in old-fashioned stoves. You can buy refractory mud and mix it yourself. The main thing is insulating glass. trouble. The design of the door is very useful. Only those with doors can be clean.