There is provided an exhaust purification device including a particulate filter configured to collect particulates contained in an exhaust gas, an oxidation catalyst disposed in a front stage of the particulate filter and configured to have a carrier partially or entirely made of a material which absorbs a microwave, a housing in which the particulate filter and the oxidation catalyst are arranged, and a microwave generator configured to generate a microwave to be irradiated onto the oxidation catalyst in a direction to which the exhaust gas flows.

There is provided an exhaust purification device including a particulate filter configured to collect particulates contained in an exhaust gas, an oxidation catalyst disposed in a front stage of the particulate filter and configured to have a carrier partially or entirely made of a material which absorbs a microwave, a housing in which the particulate filter and the oxidation catalyst are arranged, and a microwave generator configured to generate a microwave to be irradiated onto the oxidation catalyst in a direction to which the exhaust gas flows.

A disclosed microwave heating apparatus includes a casing part configured to accommodate an object to be heated; a microwave generator configured to generate a microwave; an electromagnetic wave generator configured to generate an electromagnetic wave whose frequency is different from that of the microwave; an electromagnetic wave sensor configured to measure power of the electromagnetic wave, the power of the electromagnetic wave being measured after the electromagnetic wave incident on the casing part from the electromagnetic wave generator has passed through the object to be heated; and a controller configured to control, based on the power measured in the electromagnetic wave sensor, the microwave generator to generate the microwave.

A disclosed microwave heating apparatus includes a casing part configured to accommodate an object to be heated; a microwave generator configured to generate a microwave; an electromagnetic wave generator configured to generate an electromagnetic wave whose frequency is different from that of the microwave; an electromagnetic wave sensor configured to measure power of the electromagnetic wave, the power of the electromagnetic wave being measured after the electromagnetic wave incident on the casing part from the electromagnetic wave generator has passed through the object to be heated; and a controller configured to control, based on the power measured in the electromagnetic wave sensor, the microwave generator to generate the microwave.

A filter regeneration device includes a microwave radiator configured to radiate a microwave and disposed to be oriented in a direction toward a ceramic filter configured to purify exhaust gas of an internal combustion engine, the ceramic filter being disposed in a cylindrical portion of a metallic case having the cylindrical portion and having a protruding portion protruding toward an outside of the cylindrical portion of the metallic case, the microwave radiator being disposed inside the protruding portion, and a microwave generator configured to generate the microwave radiated from the microwave radiator toward the ceramic filter.

A filter regeneration device includes a microwave radiator configured to radiate a microwave and disposed to be oriented in a direction toward a ceramic filter configured to purify exhaust gas of an internal combustion engine, the ceramic filter being disposed in a cylindrical portion of a metallic case having the cylindrical portion and having a protruding portion protruding toward an outside of the cylindrical portion of the metallic case, the microwave radiator being disposed inside the protruding portion, and a microwave generator configured to generate the microwave radiated from the microwave radiator toward the ceramic filter.

The catalyst heating device includes: an irradiation unit; and a control unit. The irradiation unit includes an antenna and is configured to radiate a microwave through the antenna to a catalyst device which has microwave absorbability and is configured to purify gas, to heat the catalyst device. The control unit has a function of allowing the irradiation unit to make irradiation with the microwave under an irradiation condition including at least any of a frequency of the microwave and a position of the antenna, and has a function of changing the irradiation condition.

The catalyst heating device includes: an irradiation unit; and a control unit. The irradiation unit includes an antenna and is configured to radiate a microwave through the antenna to a catalyst device which has microwave absorbability and is configured to purify gas, to heat the catalyst device. The control unit has a function of allowing the irradiation unit to make irradiation with the microwave under an irradiation condition including at least any of a frequency of the microwave and a position of the antenna, and has a function of changing the irradiation condition.

Provided is a plasma reactor capable of reliably generating plasma even in the event of inflow of water. The plasma reactor of the present invention includes a plasma panel stack 20, electrically conductive members 51 and 54, a case, and a mat 71. The plasma panel stack 20 has a structure in which electrode panels 30 are stacked, and generates plasma upon application of voltage between the adjacent electrode panels 30. The electrically conductive members 51 and 54 are electrically connected to discharge electrodes of the electrode panels 30. The case houses the plasma panel stack 20. The mat 71 intervenes between the case and the plasma panel stack 20 and fixes the plasma panel stack 20 to the case. The mat 71 is disposed apart from the electrically conductive members 51 and 54 so that gaps S1 and S2 are formed between the mat 71 and the electrically conductive members 51 and 54, respectively.

Provided is a plasma reactor capable of reliably generating plasma even in the event of inflow of water. The plasma reactor of the present invention includes a plasma panel stack 20, electrically conductive members 51 and 54, a case, and a mat 71. The plasma panel stack 20 has a structure in which electrode panels 30 are stacked, and generates plasma upon application of voltage between the adjacent electrode panels 30. The electrically conductive members 51 and 54 are electrically connected to discharge electrodes of the electrode panels 30. The case houses the plasma panel stack 20. The mat 71 intervenes between the case and the plasma panel stack 20 and fixes the plasma panel stack 20 to the case. The mat 71 is disposed apart from the electrically conductive members 51 and 54 so that gaps S1 and S2 are formed between the mat 71 and the electrically conductive members 51 and 54, respectively.