Arc-shaped plate heat exchanger

An arc-shaped plate heat exchanger, comprising:

• a cylindrical housing;
• and
• a heat-exchanging plate assembly disposed in the housing, the housing being provided with an inlet and an outlet that are in communication with a fluid passage in the heat-exchanging plate assembly, the heat-exchanging plate assembly including:
• two groups of arc-shaped heat-exchanging plates symmetrically disposed on two sides of an axis of the housing, each group of arc-shaped heat-exchanging plates includes multiple arc-shaped heat-exchanging plates having sizes that gradually increase from a center of the housing outward, to form a first fluid passage and a second fluid passage that are spaced away from each other;
• two end surfaces of the first fluid passage parallel to the axis of the housing are sealed, and passage openings are provided on the two end surfaces of the first fluid passage perpendicular to the axis of the housing forming a straight passage along the axis of the housing;
• two end surfaces of the second fluid passage perpendicular to the axis of the housing are sealed, and passage openings are provided on the two end surfaces of the second fluid passage parallel to the axis of the housing forming an arc-shaped passage along a circumferential direction;
• an area between the two groups of arc-shaped heat-exchanging plates is separated into an inlet collection chamber and an outlet collection chamber by a separator, inlet ends of the second fluid passages of the heat-exchanging plate assembly being located in the inlet collection chamber, outlet ends of the second fluid passages being located in the outlet collection chamber, and the inlet ends and outlet ends of neighboring second fluid passages are connected so as to form a serial connection structure;
• baffle plates disposed inside the inlet collection chamber and the outlet collection chamber;
• an end of the inlet collection chamber and an end of the outlet collection chamber are both sealed with an end baffle;
• and
• two reinforcing rings respectively sleeved on two ends of outermost arc-shaped heat-exchanging plates of the multiple arc-shaped heat-exchanging plates.