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US 12,405,001 B2Granted
Combustor
AssigneesKabushiki Kaisha Toyota Jidoshokki, Osaka University
InventorsHiroyasu Kawauchi, Hideaki Suzuki, Yoshitaka Takeuchi, Ryuichi Murai, Fumiteru Akamatsu, Yu Imahashi
Life of this patent
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Abstract
A combustor includes: a housing having an annular shape of which one end side is open and of which the other end side is closed; at least one introduction portion that introduces a fuel and an oxidizing gas into the housing to generate a tubular flow; and an ignition unit that ignites the fuel introduced into the housing. The ignition unit includes a discharge electrode and a ground electrode. A space that the fuel and the oxidizing gas reach is provided between the discharge electrode and the ground electrode.
Claims12
A combustor comprising:
- a housing having a cylindrical shape of which one end side is open and of which the other end side is closed;
- at least one introduction portion that introduces a fuel and an oxidizing gas into the housing to generate a tubular flow;
- and
- an ignition unit that ignites the fuel introduced into the housing,
- wherein the ignition unit includes a discharge electrode and a ground electrode, and
- a space that the fuel and the oxidizing gas reach is provided between the discharge electrode and the ground electrode,
- wherein, a first end of the housing forms an open end of the housing in an axial direction of the housing, and a wall is provided at a second end of the housing that forms a closed end of the housing in the axial direction of the housing,
- the housing is grounded to function as the ground electrode,
- the ignition unit includes
- a discharge electrode terminal, which is disposed at the wall of the closed end of the housing so as to extend inside of the housing, to function as the discharge electrode, and
- a voltage supply unit that supplies a voltage to the discharge electrode terminal, to generate a discharge between a tip portion of the discharge electrode terminal and the housing to ignite the fuel,
- the introduction portion is provided between the wall of the housing and the center portion of the housing in the axial direction of the housing on the outer peripheral surface of the housing having the cylindrical shape, and
- the tip portion of the discharge electrode terminal of the ignition unit is positioned inside the housing between a rear end of the introduction portion and the wall of the closed end of the housing in the axial direction.
10 more elements
A combustor comprising:
- a housing having a cylindrical shape of which one end side is open and of which the other end side is closed;
- at least one introduction portion that introduces a fuel and an oxidizing gas into the housing to generate a tubular flow;
- and
- an ignition unit that ignites the fuel introduced into the housing,
- wherein the ignition unit includes a discharge electrode and a ground electrode, and
- a space that the fuel and the oxidizing gas reach is provided between the discharge electrode and the ground electrode,
- wherein in the combustor that combusts the fuel mixed with the oxidizing gas, to generate combustion gas,
- the fuel, the oxidizing gas, and the combustion gas flow in an axial direction of the housing,
- the ignition unit includes an ignition plug disposed on the other end side of the housing, and ignites the fuel introduced into the housing, to generate the combustion gas including a tubular flame,
- the ignition plug includes an insulator, a center electrode that is provided at a tip of a center pole supported by the insulator, to function as the discharge electrode, and the ground electrode integrated with a metal shell having a cylindrical shape and being disposed around the insulator,
- the ignition unit ignites the fuel by supplying a voltage to the center electrode and thus generating a discharge in the space between the center electrode and the ground electrode,
- the center electrode protrudes from a tip surface of the insulator, and
- the ground electrode is disposed outside the center electrode in a radial direction of the metal shell so as not to overlap the center electrode in an axial direction of the metal shell,
- wherein the ground electrode has a cylindrical shape and is integrated with the metal shell so as to be disposed around the insulator.
11 more elements
A combustor comprising:
- a housing having a cylindrical shape of which one end side is open and of which the other end side is closed;
- at least one introduction portion that introduces a fuel and an oxidizing gas into the housing to generate a tubular flow;
- and
- an ignition unit that ignites the fuel introduced into the housing,
- wherein the ignition unit includes a discharge electrode and a ground electrode, and
- a space that the fuel and the oxidizing gas reach is provided between the discharge electrode and the ground electrode,
- wherein in the combustor that combusts the fuel mixed with the oxidizing gas, to generate combustion gas,
- the fuel, the oxidizing gas, and the combustion gas flow in an axial direction of the housing,
- the ignition unit includes an ignition plug disposed on the other end side of the housing, and ignites the fuel introduced into the housing, to generate the combustion gas including a tubular flame,
- the ignition plug includes an insulator, a center electrode that is provided at a tip of a center pole supported by the insulator, to function as the discharge electrode, and the ground electrode integrated with a metal shell having a cylindrical shape and being disposed around the insulator,
- the ignition unit ignites the fuel by supplying a voltage to the center electrode and thus generating a discharge in the space between the center electrode and the ground electrode,
- the center electrode protrudes from a tip surface of the insulator, and
- the ground electrode is disposed outside the center electrode in a radial direction of the metal shell so as not to overlap the center electrode in an axial direction of the metal shell,
- wherein the ground electrode includes an annular portion attached to the metal shell, and an erected portion provided on a tip surface of the annular portion to extend to the one end side of the housing.
11 more elements
Dependencies are inferred from the claim text.