Gas powered heating unit and a heat not burn vaporising device

A vaporising device comprising a housing, the housing being of heat conductive material and comprising:

• a vaporisation chamber for holding a vaporisable material configured to release an aerosol when heated,
• a first catalytic combustion chamber,
• a second catalytic combustion chamber, extending around the first catalytic combustion chamber, and
• a flame combustion chamber communicating the second catalytic combustion chamber with the first catalytic combustion chamber,
• a first catalytic element located in the first catalytic combustion chamber,
• a second catalytic element located in the second catalytic combustion chamber,
• a fuel gas inlet to the first catalytic combustion chamber,
• an exhaust gas outlet from the second catalytic combustion chamber, the fuel gas inlet and the exhaust gas outlet being disposed relative to the first and second catalytic combustion chambers so that fuel gas from the fuel gas inlet flows initially through the first catalytic combustion chamber along the first catalytic element where at least some of the fuel gas is converted to heat, and exhaust gases resulting from conversion in the first catalytic combustion chamber and unburnt fuel gas from the first catalytic combustion chamber flow from the first catalytic combustion chamber through the flame combustion chamber into the second catalytic combustion chamber and along the second catalytic element in the second catalytic combustion chamber where the unburnt fuel gas is converted to heat, and the exhaust gases resulting from conversion in the first and second catalytic combustion chamber exit through the exhaust gas outlet, and
• a perforated end cap coated with a gas catalytic material extending transversely across the first catalytic element adjacent the flame combustion chamber, the perforated end cap being configured so that as fuel gas is initially burnt in a flame in the flame combustion chamber, the flame raises the temperature of the end cap to the ignition temperature of the catalytic material coated thereon, which commences to convert fuel gas to heat and thereby extinguish the flame, and the first catalytic element and the perforated end cap being configured to act as a barrier to prevent blowback of flame from the flame combustion chamber through the fuel gas inlet.

A gas powered heating unit comprising:

• a housing of heat conductive material comprising:
• a first catalytic combustion chamber,
• a second catalytic combustion chamber extending around the first catalytic combustion chamber, and
• a flame combustion chamber communicating the second catalytic combustion chamber with the first catalytic combustion chamber,
• a first catalytic element located in the first catalytic combustion chamber,
• a second catalytic element located in the second catalytic combustion chamber,
• a fuel gas inlet to the first catalytic combustion chamber,
• an exhaust gas outlet from the second catalytic combustion chamber, the fuel gas inlet and the exhaust gas outlet being disposed relative to the first and second catalytic combustion chambers so that fuel gas from the fuel gas inlet flows initially through the first catalytic combustion chamber along the first catalytic element where at least some of the fuel gas is converted to heat, and exhaust gases resulting from conversion in the first catalytic combustion chamber and unburnt fuel gas from the first catalytic combustion chamber flow from the first catalytic combustion chamber through the flame combustion chamber into the second catalytic combustion chamber and along the second catalytic element in the second catalytic combustion chamber where the unburnt fuel gas is converted to heat, and the exhaust gases resulting from conversion in the first and second catalytic combustion chamber exit through the exhaust gas outlet, and
• a perforated end cap coated with a gas catalytic material extending transversely across the first catalytic element adjacent the flame combustion chamber, the perforated end cap being configured so that as fuel gas is initially burnt in a flame in the flame combustion chamber, the flame raises the temperature of the end cap to the ignition temperature of the catalytic material coated thereon, which commences to convert fuel gas to heat and thereby extinguish the flame, and the first catalytic element and the perforated end cap being configured to act as a barrier to prevent blowback of flame from the flame combustion chamber through the fuel gas inlet.