Heat exchanger

A heat exchanger comprising:

• a plurality of tubes disposed horizontally, each tube having a first end and a second and;
• a first header vertically disposed to communicate with the first end of each of the tubes;
• a second header vertically disposed to communicate with the second end of each of the tubes;
• at least one flow passage defining baffle mounted to at least one header of the first header and the second header to prevent flow of the refrigerant in the at least one header in a longitudinal direction and to divide the tubes into n (n≧2, where n is an even number) groups, each of the groups having tubes allowing the refrigerant to flow in one direction therethrough and the number of the at least one flow passage defining baffle being n−1;
• and
• at least one flow speed boosting baffle mounted to at least one header of the first header and the second header arranged at an inlet of one group of the n groups such that the flow speed boosting baffle is positioned between the one group and another group positioned immediately ahead of the one group in a direction of flow of the refrigerant when the heat exchanger operates as an evaporator, each of the at least one flow speed boosting baffle being provided with at least one boosting hole allowing the refrigerant to pass therethrough.

A heat exchanger comprising:

• a plurality of tubes disposed horizontally, each tube having a first end and a second end;
• a first header vertically disposed to communicate with the first end of each of the tubes and provided with an inlet pipe and an outlet pipe;
• a second header vertically disposed to communicate with the second end of each of the tubes;
• at least one flow passage defining baffle mounted to the first header to prevent flow of the refrigerant in the at least one header in a longitudinal direction and to divide the tubes into a plurality of groups, each of the groups having tubes allowing the refrigerant to flow in one direction therethrough;
• and
• at least one flow distribution baffle mounted to the second header such that a supply section of the second header to supply the refrigerant to the tubes belonging to one of the groups positioned at an uppermost side is partitioned into an upper section communicating one portion of the tubes and a lower section communicating with the other portion of the tubes, each of the at least one flow distribution baffle being provided with at least one distribution hole allowing the refrigerant to pass therethrough, wherein one portion of the refrigerant directed from the lower section to the upper section is distributed to the one portion of the tubes communicating with the upper section through the at least one distribution hole, and the other portion of the refrigerant fails to pass through the at least one distribution hole and is distributed to the other portion of the tubes communicating with the lower section.

A heat exchanger comprising:

• a plurality of elongated, first fluid conduits disposed in a first direction;
• an elongated second fluid conduit in fluid communication with one end of each of the plurality of first fluid conduits, and extending along a second different direction,
• an elongated third fluid conduit in fluid communication with an opposite end of each of the plurality of first conduits, and extending along the second direction,
• at least one flow passage defining baffle in the second fluid conduit and in the third fluid conduit to prevent liquid flow in the second fluid conduit in a longitudinal direction and to divide the plurality of first conduits into at least two groups of first fluid conduits, wherein fluid flows in opposite directions in adjacent groups;
• and
• at least one flow distribution baffle on the third conduit arranged at an inlet of one of the groups of first conduits, each of the at least one flow distribution baffles being provided with at least one distribution hole allowing the fluid to pass therethrough.