Heat exchanger and air conditioner equipped with same

Abstract

The heat exchanger includes a plurality of flat tubes arranged in a first direction and each extending in a second direction intersecting the first direction. The flat tubes have a tube wall in which a heat transfer flow path is provided through which a fluid flows in an internal space, and the tube wall has flat tube side wall portions facing each other in the first direction, and a through hole is formed in the tube side wall portions. Adjacent flat tubes have connecting portions that connect the tube walls and communicate the heat transfer flow paths inside the tube walls, and the connecting portions are constituted by connecting protrusions that protrude in the first direction from peripheral portions of the through holes formed in at least one of the opposing tube side wall portions of the adjacent flat tubes.

Claims

1. A heat exchanger comprising a plurality of flat tubes arranged in a first direction and each extending in a second direction intersecting the first direction, the flat tubes having a tube wall provided with a heat transfer flow path through which a fluid flows in an internal space, A plate-shaped tube sealing portion is provided, the plate-shaped tube sealing portion being arranged at least at one end of the flat tubes in the second direction and covering one end of the heat transfer flow path of the flat tubes, The one ends of the flat tubes are fixed to the tube sealing portions at a constant pitch, The tube wall has flat tube side wall portions facing each other in the first direction, and a through hole is formed in the tube side wall portions, Adjacent flat tubes have connecting portions that connect the tube walls and communicate the heat transfer flow paths inside the tube walls, The connecting portion is formed on at least one of the opposing tube side wall portions of the adjacent flat tubes, and is configured by a connecting protrusion portion protruding from a peripheral portion of the through hole in the first direction, heat exchanger.

2. The connecting portion is configured by the connecting protrusions formed on both of the opposing tube side wall portions of the adjacent flat tubes.

2. The heat exchanger of claim 1.

3. The connecting protrusions formed on both of the opposing tube side wall portions of the adjacent flat tubes at least partially overlap in the first direction.

3. The heat exchanger of claim 2.

4. The flat tube has a first partition disposed in the internal space of the tube wall, extending in the second direction, and dividing the internal space in a third direction perpendicular to the first direction and the second direction, At least one end of the first partition in the second direction is located inside both ends of the flat tube in the second direction.

2. The heat exchanger of claim 1.

5. a second partition provided between the tube walls of at least one pair of adjacent flat tubes among the plurality of flat tubes and configured to block the flow of the fluid between the heat transfer flow paths via the connecting portion; 2. The heat exchanger of claim 1.

6. At least one of the opposing tube side walls of the adjacent flat tubes is provided with a position restricting protrusion that restricts the distance between the tube walls.

2. The heat exchanger of claim 1.

7. A compressor, a heat exchanger according to any one of claims 1 to 6, an expansion valve, and an indoor heat exchanger are connected via refrigerant piping, and the refrigerant circuit circulates the fluid. Air conditioning units.

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