Abstract: A fuel cell includes an electrolyte electrode assembly and separators. The separator has a fuel gas supply passage, a fuel gas distribution passage, an oxygen-containing gas supply passage, and an oxygen-containing gas distribution passage. The fuel gas flows through the fuel gas supply passage into the separator. The fuel gas distribution passage connects the fuel gas channel and the fuel gas supply passage. The oxygen-containing gas flows through the oxygen-containing gas supply passage into the separator. The oxygen-containing gas distribution passage connects the oxygen-containing gas channel and the oxygen-containing gas supply passage.

Abstract: A fuel cell includes electrolyte electrode assemblies and a pair of separators sandwiching the electrolyte electrode assemblies. Each of the separators is a single plate, and includes a plurality of circular disks. First protrusions and second protrusions are provided on both surfaces of the circular disk. The first protrusions contact an anode of the electrolyte electrode assembly, and the second protrusions contact a cathode of the electrolyte electrode assembly. A channel member is provided on a surface of the separator facing the cathode. The channel member has a second bridge. When a load in a stacking direction is applied to the second bridge of the channel member, the second bridge is deformable in the stacking direction.

Abstract: A fuel cell includes an electrolyte electrode assembly and separators. The separator has a fuel gas supply passage, a fuel gas distribution passage, an oxygen-containing gas supply passage, and an oxygen-containing gas distribution passage. The fuel gas flows through the fuel gas supply passage into the separator. The fuel gas distribution passage connects the fuel gas channel and the fuel gas supply passage. The oxygen-containing gas flows through the oxygen-containing gas supply passage into the separator. The oxygen-containing gas distribution passage connects the oxygen-containing gas channel and the oxygen-containing gas supply passage.

Abstract: A fuel cell includes an electrolyte electrode assembly and separators. The separator includes first through third plates which are stacked together. The first plate has a first protrusion section on its surface contacting an anode of a first circular disk. The first protrusion section includes a large number of protrusions and a substantially ring shaped protrusion which is provided around the protrusions. The first protrusion section protrudes toward the anode, and a fuel gas flow field is formed between the anode and the first protrusion section.

Abstract: A fuel cell includes an electrolyte electrode assembly and a pair of separators sandwiching the electrolyte electrode assembly. Each of the separators is a single plate, and includes a plurality of circular disks. First protrusions and second protrusions are provided on both surfaces of the circular disk. The first protrusions contact the anode of the electrolyte electrode assembly, and the second protrusions contact the cathode of the electrolyte electrode assembly. A channel member is provided on a surface of the separator facing the cathode. The channel member forms a plurality of fuel gas supply channels connected between a fuel gas supply passage and a fuel gas inlet for supplying a fuel gas into a fuel gas flow field.

Abstract: A fuel cell includes electrolyte electrode assemblies and a pair of separators sandwiching the electrolyte electrode assemblies. Each of the separators includes a plurality of circular disks. First protrusions and second protrusions are provided on both surfaces of the circular disk. The first protrusions contact an anode of the electrolyte electrode assembly, and the second protrusions contact a cathode of the electrolyte electrode assembly. The area of the separators is divided into portions corresponding to the respective electrolyte electrode assemblies. Each of the divided portions of the separators forms a fuel gas flow field and an oxygen-containing gas flow field by sandwiching the electrolyte electrode assembly.

Abstract: A fuel cell includes electrolyte electrode assemblies and a pair of separators sandwiching the electrolyte electrode assemblies. Each of the separators has a first small diameter end portion to form a fuel gas supply passage therein, and circular disks sandwiching the electrolyte electrode assemblies to form a fuel gas flow field and an oxygen-containing gas flow field. The first small diameter end portion is integral with circular disks each having a relatively large diameter through a plurality of first bridges. The first bridges extend radially outwardly from the first small diameter end portion at equal angles.

Abstract: A fuel cell includes an electrolyte electrode assembly and separators. The separator has a fuel gas supply passage, a fuel gas distribution passage, an oxygen-containing gas supply passage, and an oxygen-containing gas distribution passage. The fuel gas flows through the fuel gas supply passage into the separator. The fuel gas distribution passage connects the fuel gas channel and the fuel gas supply passage. The oxygen-containing gas flows through the oxygen-containing gas supply passage into the separator. The oxygen-containing gas distribution passage connects the oxygen-containing gas channel and the oxygen-containing gas supply passage.

Abstract: A fuel cell includes electrolyte electrode assemblies and a pair of separators sandwiching the electrolyte electrode assemblies. Each of the separators has a first small diameter end portion to form a fuel gas supply passage therein, and circular disks sandwiching the electrolyte electrode assemblies to form a fuel gas flow field and an oxygen-containing gas flow field. The first small diameter end portion is integral with circular disks each having a relatively large diameter through a plurality of first bridges. The first bridges extend radially outwardly from the first small diameter end portion at equal angles.

Abstract: A fuel cell includes electrolyte electrode assemblies and a pair of separators sandwiching the electrolyte electrode assemblies. Each of the separators includes a plurality of circular disks. First protrusions and second protrusions are provided on both surfaces of the circular disk. The first protrusions contact an anode of the electrolyte electrode assembly, and the second protrusions contact a cathode of the electrolyte electrode assembly. The area of the separators is divided into portions corresponding to the respective electrolyte electrode assemblies. Each of the divided portions of the separators forms a fuel gas flow field and an oxygen-containing gas flow field by sandwiching the electrolyte electrode assembly.

Abstract: A fuel cell includes electrolyte electrode assemblies and a pair of separators sandwiching the electrolyte electrode assemblies. Each of the separators is a single plate, and includes a plurality of circular disks. First protrusions and second protrusions are provided on both surfaces of the circular disk. The first protrusions contact an anode of the electrolyte electrode assembly, and the second protrusions contact a cathode of the electrolyte electrode assembly. A channel member is provided on a surface of the separator facing the cathode. The channel member has a second bridge. When a load in a stacking direction is applied to the second bridge of the channel member, the second bridge is deformable in the stacking direction.

Abstract: A fuel cell includes an electrolyte electrode assembly and a pair of separators sandwiching the electrolyte electrode assembly. Each of the separators is a single plate, and includes a plurality of circular disks. First protrusions and second protrusions are provided on both surfaces of the circular disk. The first protrusions contact the anode of the electrolyte electrode assembly, and the second protrusions contact the cathode of the electrolyte electrode assembly. A channel member is provided on a surface of the separator facing the cathode. The channel member forms a plurality of fuel gas supply channels connected between a fuel gas supply passage and a fuel gas inlet for supplying a fuel gas into a fuel gas flow field.

Abstract: A fuel cell includes an electrolyte electrode assembly and separators. The separator has a fuel gas supply passage, a fuel gas distribution passage, an oxygen-containing gas supply passage, and an oxygen-containing gas distribution passage. The fuel gas flows through the fuel gas supply passage into the separator. The fuel gas distribution passage connects the fuel gas channel and the fuel gas supply passage. The oxygen-containing gas flows through the oxygen-containing gas supply passage into the separator. The oxygen-containing gas distribution passage connects the oxygen-containing gas channel and the oxygen-containing gas supply passage.

Abstract: A fuel cell includes an electrolyte electrode assembly and separators. The separator includes first through third plates which are stacked together. The first plate has a first protrusion section on its surface contacting an anode of a first circular disk. The first protrusion section includes a large number of protrusions and a substantially ring shaped protrusion which is provided around the protrusions. The first protrusion section protrudes toward the anode, and a fuel gas flow field is formed between the anode and the first protrusion section.

Abstract: A fuel cell includes an electrolyte electrode assembly including a cathode, and an anode, and an electrolyte interposed between the cathode and the anode. The separator includes a pair of plates. A fuel gas channel and an oxygen-containing gas channels are formed separately between the plates. The anode of the electrolyte electrode assembly includes a porous layer, and pores in the porous layer are connected to form a fuel gas supply passage. A fuel gas inlet is formed on the plate of the separator. A fuel gas from the fuel gas channel is supplied to a central region of the anode through the fuel gas inlet.

Abstract: In a diffuser arrangement for centrifugal compressors, a longitudinal center line of each passage is tangential to a reference tangent circle defined concentrically with respect to the impeller and having a smaller diameter than an outer diameter of the impeller so that a leading edge defined at an intersection between each pair of adjacent passages is brought close to an outer periphery of the impeller. Because the leading edge, in particular the side portions thereof, is brought close to the outer peripheral part of the impeller, the incidence mismatch can be minimized so that a blockage in the throat section of each passage can be avoided, and the static pressure can be recovered at a high efficiency. Also, when drilling the passages, protrusions are not formed in the inner peripheral part of the diffuser. Elimination of the need to remove such protrusions contributes to the reduction in the manufacturing cost.

Abstract: In a diffuser arrangement for centrifugal compressors, a longitudinal center line of each passage is tangential to a reference tangent circle defined concentrically with respect to the impeller and having a smaller diameter than an outer diameter of the impeller so that a leading edge defined at an intersection between each pair of adjacent passages is brought close to an outer periphery of the impeller. Because the leading edge, in particular the side portions thereof, is brought close to the outer peripheral part of the impeller, the incidence mismatch can be minimized so that a blockage in the throat section of each passage can be avoided, and the static pressure can be recovered at a high efficiency. Also, when drilling the passages, protrusions are not formed in the inner peripheral part of the diffuser. Elimination of the need to remove such protrusions contributes to the reduction in the manufacturing cost.

Abstract: A far infrared rays radiation device comprises a first metal plate having a far infrared rays radiating layer and a convex shape with a predetermined radius of curvature; an electrical current applying equipment for heating the first metal plate and for applying minute electrical current to the first metal plate; a first insulation plate interposed between the first metal plate and the electrical current applying equipment; a second metal plate provided below the electrical current applying equipment and having a projecting portion to form the first metal plate into the convex shape or to keep the convex shape; a second insulation plate interposed between the electrical current applying equipment and the second metal plate; and lead wires for supplying a predetermined electrical current to the electrical current applying equipment. Thus, the far infrared rays radiation device can radiate far infrared rays in a wavelength over 3.6 .mu.m.

Abstract: A gas turbine engine E includes a compressor wheel 9 and a turbine wheel 10 fixed to a rotary shaft 8, a can-type combustor 18 disposed on an extension of the axis L of the rotary shaft 8, and an circular plate-type heat exchanger 12 disposed to surround a radially outer portion of the can-type combustor 18. The compressor wheel 9, the turbine wheel 10, the can-type combustor 18 and the plate-type heat exchanger 12 are disposed coaxially with the axis L of the rotary shaft 8. Therefore, the flows of compressed air and combustion gas are symmetrized with respect to the axis L, and the distribution of temperature within a casing is also symmetrized with respect to the axis L. Thus, the flows of compressed air and combustion gas within the gas turbine engine E can be axially symmetrized, and the generation of a thermal distortion can be prevented.

Abstract: An air, containing 2,000,000 or more mist particles per cubic foot with particle sizes of essentially not more than 0.5 microns, cleans the inside of a room. The air is sent to the room and then removed therefrom, thereby the mist particles carry dust, microorganism and the like therein out of the room.The mist-containing air is created as follows: Water is injected at a pressure of 0.3 to 5.5 kg/cm.sup.2 from a plurality of nozzles in order to cause the water to strike against the side wall of the water injection apparatus, the side wall being 10 to 150 cm away from the nozzles, and thereby form a large number of mist particles, and then circulating air therethrough to create said mist-containing air.