Material isothermal heating system for laboratory and control method thereof

The invention discloses a material isothermal heating system for a laboratory. The material isothermal heating system comprises a heating furnace and a carrier gas circulating system; an external carrier gas source communicates with a carrier gas inlet of the heating furnace through a first carrier gas valve and a second carrier gas valve in sequence; the carrier gas circulating system comprises a gas compressor, a gas storage bag, a filter and a condenser, and a carrier gas outlet of the heating furnace is connected between the two carrier gas valves through the condenser, the filter and the gas compressor in sequence; and an emptying valve and a gas inlet valve of the gas storage bag are also connected between the filter and the gas compressor. According to the system, materials are heated through convection heat exchange by utilizing hot carrier gas, meanwhile, the furnace wall with the same temperature as the carrier gas heats the materials through radiation at the same time, the temperature rise uniformi