Vulcanization device for a tire and vulcanization method

A vulcanizing device for a tire, the device comprising:

• a mould;
• a curing bladder having an internal part that defines a vulcanizing chamber;
• a central part positioned inside the mould, the central part being structured to support the curing bladder so that the curing bladder presses against an internal part of a tire during vulcanization of the tire;
• an inlet pipe through which fluid enters the vulcanizing chamber;
• an outlet pipe through which fluid leaves the vulcanizing chamber;
• and
• an injector,
• wherein the vulcanizing chamber is structured to hold a pressurized heat-transfer fluid such that the pressurized heat-transfer fluid circulates in the vulcanizing chamber and between the inlet pipe and the outlet pipe,
• wherein the injector is arranged outside of the vulcanizing chamber and is connected to the inlet pipe, the outlet pipe, and a supply pipe, which supplies steam or pressurized-gas to the injector, and
• wherein the injector is structured to enable the steam or the pressurized gas supplied via the supply pipe to mix with the pressurized heat-transfer fluid leaving the vulcanizing chamber via the outlet pipe.

A method of vulcanizing a tire, comprising steps of:

• installing a green tire in a vulcanizing device that includes:
• a mould,
• a curing bladder having an internal part that defines a vulcanizing chamber,
• a central part positioned inside the mould, the central part being structured to support the curing bladder so that the curing bladder presses against an internal part of the tire during vulcanization of the tire,
• an inlet pipe through which fluid enters the vulcanizing chamber,
• an outlet pipe through which fluid leaves the vulcanizing chamber, and
• an injector arranged outside of the vulcanizing chamber, the injector being connected to the inlet pipe, the outlet pipe, and a supply pipe that supplies steam or pressurized-gas to the injector;
• circulating a pressurized heat-transfer fluid in the vulcanizing chamber and between the inlet pipe and the outlet pipe;
• and
• mixing, at the injector, the steam or the pressurized gas supplied via the supply pipe with the pressurized heat-transfer fluid leaving the vulcanizing chamber via the outlet pipe.