초록 ▼

A stack type heat exchanger includes a plurality of unit frames stacked on one another, each unit frame including a tube made by combining a pair of plates and forming a path for refrigerant and upper and lower tanks disposed at upper and lower ends of the tube, a radiation fin provided between the

A stack type heat exchanger includes a plurality of unit frames stacked on one another, each unit frame including a tube made by combining a pair of plates and forming a path for refrigerant and upper and lower tanks disposed at upper and lower ends of the tube, a radiation fin provided between the stacked tubes, an inlet pipe and an outlet pipe provided at one side of the unit frames through which refrigerant enters and is exhausted, a first burr formed in the lower tank to protrude in a direction opposite to a direction in which the refrigerant flows, and a second burr formed in the upper tank to protrude in the same direction as the direction in which the refrigerant flows.

대표청구항 ▼

What is claimed is: 1. A stack type heat exchanger, comprising: a plurality of unit frames stacked on one another, each unit frame including a pair of first and second tubes which are parallel to and independent of each other, each of the first and second tubes comprising a pair of plates combined

What is claimed is: 1. A stack type heat exchanger, comprising: a plurality of unit frames stacked on one another, each unit frame including a pair of first and second tubes which are parallel to and independent of each other, each of the first and second tubes comprising a pair of plates combined with each other and forming a path for refrigerant, first and second tanks which are disposed at and connected to lower ends of the first and second tubes, respectively, and are independent of each other, and third and fourth tanks which are disposed at and connected to upper ends of the first and second tubes, respectively, and are independent of each other; radiation fins provided between the tubes of the stacked unit frames; an inlet pipe and an outlet pipe which are provided at one side of the stacked unit frames and through which the refrigerant enters and is exhausted, respectively; first burrs which are formed in the first and second tanks and protrude in a direction opposite to a direction in which the refrigerant flows so as to provide resistance to the refrigerant flows in the first and second tanks; and second burrs which are formed in the third and fourth tanks and protrude in the same direction in which the refrigerant flows so as to protrude the refrigerant flows in the third and fourth tanks; wherein, in each of said unit frames, the first and fourth tanks are diagonally arranged with respect to each other, and the second and third tanks are diagonally arranged with respect to each other, and the first burr formed in the first tank protrudes in the same direction as the second burr formed in the fourth tank, and the first burr formed in the second tank protrudes in the same direction as the second burr formed in the third tank. 2. The stack type heat exchanger as claimed in claim 1, wherein the first tanks of said unit frames are connected, by brazing, with each other along a stacking direction of said stacked unit frames to form a first tank group; the second tanks of said unit frames are connected, by brazing, with each other along the stacking direction of said stacked unit frames to form a second tank group; the third tanks of said unit frames are connected, by brazing, with each other along the stacking direction of said stacked unit frames to form a third tank group; and the fourth tanks of said unit frames are connected, by brazing, with each other along the stacking direction of said stacked unit frames to form a fourth tank group. 3. The stack type heat exchanger as claimed in claim 2, wherein the inlet pipe and the outlet pipe are connected to the first and second tank groups, respectively. 4. The stack type heat exchanger as claimed in claim 2, wherein at least one tank of the first tank group and at least one tank of the second tank group are connected to each other for circulation of the refrigerant. 5. The stack type heat exchanger as claimed in claim 4, further comprising a connection unit which is interposed between and connected said at least one tank of the first tank group and said at least one tank of the second tank group so that the first tank group and the second tank group are connected. 6. The stack type heat exchanger as claimed in claim 5, wherein the connection unit is integrally formed with the plates constituting adjacent unit frames. 7. The stack type heat exchanger as claimed in claim 2, wherein at least one tank of the third tank group and at least one tank of the fourth tank group are connected to each other for circulation of the refrigerant. 8. The stack type heat exchanger as claimed in claim 7, further comprising a connection unit which is interposed between and connected said at least one tank of the third tank group and said at least one tank of the fourth tank group so that the third tank group and the fourth tank group are connected. 9. The stack type heat exchanger as claimed in claim 8, wherein the connection unit is integrally formed with the plates constituting adjacent unit frames.