Abstract: The power conversion device of the invention includes: a cooling unit that is a prism, the interior of which is hollow, and that has a refrigerant inlet portion and a refrigerant outlet portion the cooling unit having in the interior thereof a refrigerant channel through which a refrigerant flows from the refrigerant inlet portion towards the refrigerant outlet portion; electronic devices that are respectively disposed on three or more surfaces on the outside of side surfaces of the cooling unit, excluding a refrigerant inlet surface, in which the refrigerant inlet portion is disposed, and a refrigerant outlet surface, in which the refrigerant outlet portion is disposed, the electronic devices being cooled by boiling of the refrigerant; and a hollow outer case 4 that covers the electronic devices.

Abstract: A laminated total heat exchange element that includes a plurality of laminated plates, a first spacing member forming a first flow path between the laminated plates, and a second spacing member forming a second flow path between the laminated plates, wherein the first flow path is formed to allow fluid to pass from one side to another side of the laminated total heat exchange element, the second flow path is formed to allow fluid to pass from the another side to the one side of the laminated total heat exchange element, a third flow path, which communicates with the first flow path on the one side and extends substantially parallel to a lamination direction of the laminated plates, is formed, and a fourth flow path, which communicates with the second flow path on the another side and extends substantially parallel to the lamination direction of the laminated plate, is formed.

Abstract: Provided is a heat exchange element that suppresses an increase in air-flow resistance by suppressing deflection of a partition member caused by a change in temperature and humidity. The unit constituent members are stacked, each of which is formed of partition members that have heat-transfer properties and moisture permeability, and spacing members that hold the partition members. A primary air flow that passes along an upper-surface side of the partition member and a secondary air flow that passes along an undersurface side of the partition member cross each other so as to exchange heat and moisture via the partition member. The spacing member includes: spacing ribs that maintain the spacing between the partition members; and deflection suppressing ribs that have a height smaller than the spacing ribs so as to suppress deflection of the partition members.

Abstract: A laminated total heat exchange element that includes a plurality of laminated plates, a first spacing member forming a first flow path between the laminated plates, and a second spacing member forming a second flow path between the laminated plates, wherein the first flow path is formed to allow fluid to pass from one side to another side of the laminated total heat exchange element, the second flow path is formed to allow fluid to pass from the another side to the one side of the laminated total heat exchange element, a third flow path, which communicates with the first flow path on the one side and extends substantially parallel to a lamination direction of the laminated plates, is formed, and a fourth flow path, which communicates with the second flow path on the another side and extends substantially parallel to the lamination direction of the laminated plate, is formed.

Abstract: A total heat exchange element includes a first flow passage and a second flow passage extending orthogonal thereto. The first flow passage is an undulating flow passage that has a rectangular cross section and is formed by positioning a first wave-form plate member and a second wave-form plate member on top of each other and with a predetermined interval therebetween, and further causing spacers to hermetically close two lateral portions with respect to the traveling direction of the fluid. The second flow passage is a straight flow passage that has a substantially triangular cross section and is formed between a flat-plate-like member and one of the first and the second wave-form plate members.

Abstract: A heat exchange element includes a first flow passage and a second flow passage extending orthogonal thereto. The first flow passage is an undulating flow passage that has a rectangular cross section and is formed by positioning, a first wave-form plate member and a second wave-form plate member on top of each other and with a predetermined interval therebetween, and further causing spacers to hermetically close two lateral portions with respect to the traveling direction of the fluid. The second flow passage is a straight flow passage that has a substantially triangular cross section and is formed between a flat-plate-like member and one of the first and the second wave-form plate members, when the flat-plate-like member is positioned on the wave-like form of the one of the first and the second wave-form plate members so as to be in close contact therewith.