Cup-plate type heat exchanger

A cup-plate type heat exchanger being formed of a stacked body of plates each of which is inclined upward from a center toward an outer periphery as a whole on an entire peripheral edge of a base plane surface (1),

• in which each of first plates (3) and each of second plates (5) are alternately stacked in an intermediate portion in a stack direction,
• in which each of the first plates (3) includes a first vertical portion (7) that rises substantially parallel to a perpendicular line (L) that is to stand on the base plane surface (1) from a periphery of the base plane surface (1), an inclined portion (8) that is inclined outward from a periphery of the first vertical portion (7) thereof at an acute angle (β) with respect to the perpendicular line (L), and a second vertical portion (7) that rises substantially parallel to the perpendicular line (L) from an edge of the inclined portion (8) thereof,
• in which each of the second plates (5) includes a first inclined portion (8) that is inclined outward at the acute angle (β) with respect to the perpendicular line (L) that is to stand on the periphery of the base plane surface (1), a vertical portion (7) that rises substantially parallel to the perpendicular line (L) from an edge of the first inclined portion (8) thereof, and a second inclined portion (8) that is inclined outward from an edge of the vertical portion (7) thereof at the acute angle (β) with respect to the perpendicular line (L), and
• in which the vertical portions (7) and the inclined portions (8) of the two plates (3, 5) are aligned and stacked,
• wherein a lower end plate (2) that is thicker than each of the second plates (5) is provided at a lower end in the stack direction,
• wherein the lower end plate (2) includes a first inclined portion (6) that is inclined outward from the periphery of the base plane surface (1) at an acute angle (α) with respect to the perpendicular line (L) that is to stand on the base plane surface (1), a vertical portion (7) that rises substantially parallel to the perpendicular line (L) from an edge of the first inclined portion (6) thereof, and a second inclined portion (8) that is inclined outward from an edge of the vertical portion (7) thereof at the acute angle (β) with respect to the perpendicular line (L),
• wherein, in a state in which the plates (2, 3, 5) are stacked, each of inner fins (4) is provided between the lower end plate (2) and the first plate (3) fitted inside the lower end plate (2) and between the second plate (5) and the first plate (3) fitted inside the second plate (5), and
• wherein the angle (α) of the first inclined portion (6) of the lower end plate (2) is formed smaller than the angle (β) of the first inclined portion (8) of each of the second plates (5).