Oven used for heating and barbecuing

1. An oven used for heating and barbecuing, comprising:

an oven body, wherein an isolation plate is disposed in the oven body, wherein the isolation plate divides the oven body into an upper portion and a lower portion by substantially seal the upper portion from the lower portion, wherein the center of the isolation plate is provided with a ventilation opening, wherein a fire-pan is disposed in the inner chamber of the oven body that is located above the isolation plate, wherein a lifting mechanism is disposed in the lower portion of the inner chamber, wherein the lifting mechanism propels the fire pan to move up and down in the upper portion by reaching into the upper portion through a through hole on the isolation plate, wherein the isolation plate does not move with the fire pan.

2. The oven used for heating and barbecuing of claim 1 , wherein the ventilation opening of the isolation plate is provided with a base support, and the base support is provided with a plurality of ventilation holes.

3. The oven used for heating and barbecuing of claim 2 , wherein the fire-pan is a concave structure that is symmetric from exterior to interior, and the bottom of the fire-pan is provided with a regulating base plate that corresponds to the base support, wherein the base plate is capable of completely blocking the ventilation holes.

4. The oven used for heating and barbecuing of claim 1 , wherein the lifting mechanism is vertically disposed in the inner chamber of the oven body that is located underneath the isolation plate, wherein a fixing portion of the lifting mechanism is fixed to the oven body, wherein the base support is provided with a through-hole, wherein the upper end of a moving portion of the lifting mechanism, which can move up and down, is inserted into the through-hole, wherein the upper end of the moving portion of the lifting mechanism is lifted on the center of the bottom of the fire-pan.

5. The oven used for heating and barbecuing of claim 4 , wherein the lifting mechanism comprises a guide tube, a telescopic tube and a handle, wherein the guide tube is vertically disposed, and a lower end of the guide tube is fixed to the oven body, wherein the telescopic tube, which can move up and down, is inserted into the guide tube, wherein the upper end of the telescopic tube is inserted into the through-hole, and is lifted on the regulating base plate of the fire-pan, wherein a transmission rack is disposed in the telescopic tube, wherein the handle, which is rotationally disposed on the side wall of the oven body, is inserted into the side wall of the oven body, wherein an inner end of the handle is inserted into the telescopic tube, and the inner end of the handle is provided with a driving gear that can coordinate with the transmission rack.

6. The oven used for heating and barbecuing of claim 5 , wherein the inner wall of the oven body is provided with a rotary limiting mechanism that can coordinate with the handle.

7. The oven used for heating and barbecuing of claim 1 , wherein an annular shelf is disposed in an upper opening of the oven body, and a barbecue grid plate is disposed on the annular shelf, wherein an oven cover is disposed at an upper end of the oven body, and a hook ring is disposed at a top end of the oven cover, wherein a protection ring is annularly disposed on an outer side of the upper opening of the oven body, and a plurality of heat insulation strips is disposed between the protection ring and the oven body.

8. The oven used for heating and barbecuing of claim 7 , wherein the oven body is a circular drum-shaped structure, and the diameter of the upper opening of the oven body is greater than that of a lower opening of the oven body, wherein the oven body comprises an oven neck, an oven trunk and an oven bed, wherein the oven neck, the oven trunk and the oven bed are sequentially connected from top to bottom, wherein the lower opening of the oven neck and the upper opening of the oven trunk are respectively provided with a first annular assembling ring, and the lower opening of the oven trunk and the upper opening of the oven bed are respectively provided with a second annular assembling ring.

9. The oven used for heating and barbecuing of claim 8 , wherein the annular shelf is disposed in the upper opening of the oven neck, and the protection ring has a larger diameter than the oven neck, wherein the protection ring is concentrically connected to the oven neck through a plurality of heat insulating strips, wherein the diameter of the oven neck is smaller than the diameter of the upper opening of the oven trunk, wherein the heat insulation strips rest on top of the first assembling ring, wherein a plurality of decorative bulges is distributed on an outer surface of the oven neck.

10. The oven used for heating and barbecuing of claim 9 , wherein the isolation plate is transversely disposed in the middle of the oven trunk, wherein the edge of the isolation plate is in close contact with the side wall of the oven trunk, thereby dividing the oven body into an upper inner chamber and a lower inner chamber, wherein a non-closed bottom support is disposed on the second annular assembling ring, and a lower end of the guide tube is fixed on the bottom support.