Abstract: A heat exchanger includes an auxiliary heat exchanger, which has plate-shaped first fins and a plurality of first heat transfer tubes, and a main heat exchanger which has plate-shaped second fins and a plurality of second heat transfer tubes. A plurality of burrs are present at specified intervals on edges of the first fins. The auxiliary heat exchanger and the main heat exchanger are so positioned that the edges of the first fins on which the burrs are present are in contact with edges of the second fins, and the edges having the burrs present thereon are positioned on the inner side.

Abstract: The present invention provides a heat exchanger, an air conditioning apparatus, and a method for manufacturing the heat exchanger capable of reducing the scattering of condensate water from curved portions to the downstream side in the direction of airflow. An indoor heat exchanger includes lower fins and upper fins. The upper fins are inclined in the direction of the airflow at an angle formed between the longitudinal axis of the upper fins and the vertical direction, the range of the angle being equal to or greater than the range of an angle formed between the longitudinal axis of the lower fins and the vertical direction, and the upper fins are disposed adjacent to top ends of the lower fins. The upper fins have curved portions that are curved in proximity to the portions bordering the top ends of the lower fins on the downstream side in the airflow direction F.

Abstract: A heat exchanger includes heat transfer tubes forming one or more refrigerant passages, and a plurality of plate-shaped fins aligned and stacked at a predetermined spacing with the heat transfer tubes passing through in a substantially perpendicular manner. A relationship between a center-to-center distance S between an adjacent pair of heat transfer tubes and an outside diameter D of the heat transfer tubes is 2.5<S/D<3.5. The center-to-center distance S is measured substantially perpendicularly to the adjacent pair of heat transfer tubes. A relationship between a length L of the one or more refrigerant passages and the outside diameter D of the heat transfer tubes is 0.28×D1.17<L<1.10×D1.17. The heat exchanger is preferably for a refrigerant circuit using either a single refrigerant or a mixed refrigerant including the single refrigerant.

Abstract: An indoor unit of an air conditioner includes a cross flow fan and an indoor heat exchanger. The cross flow fan generates a flow of air. The heat exchanger has a two row part and a one row part. The one row part has an area that is smaller than the two row part, and is disposed so that it overlaps one part of the two row part in an air transit direction. Furthermore, during a cooling operation, a refrigerant flows to the two row part before flowing to the one row part.

Abstract: The present invention provides a heat exchanger, an air conditioning apparatus, and a method for manufacturing the heat exchanger capable of reducing the scattering of condensate water from curved portions to the downstream side in the direction of airflow. An indoor heat exchanger includes lower fins and upper fins. The upper fins are inclined in the direction of the airflow at an angle formed between the longitudinal axis of the upper fins and the vertical direction, the range of the angle being equal to or greater than the range of an angle formed between the longitudinal axis of the lower fins and the vertical direction, and the upper fins are disposed adjacent to top ends of the lower fins. The upper fins have curved portions that are curved in proximity to the portions bordering the top ends of the lower fins on the downstream side in the airflow direction F.

Abstract: A fin (6) is provided with a rib (15) extending generally parallel to an outer edge (25) of the fin (6) and insertion holes (22) placed in staggered arrangement for receiving heat exchange tubes. The insertion holes (22) and the rib (15) are formed such that when an inside diameter of the insertion holes (22) is set as D [mm], a distance between a center of the insertion hole (22) and the outer edge (25) is set as L [mm], a distance between a center of the rib (15) and the outer edge (25) is set as La [mm], a width of the rib (15) is set as LL1 [mm], a thickness of the fin (6) is set as t [mm], a height of the rib (15) is set as h1 [mm], and a minimum distance between the insertion holes is set as P [mm], then 0.4<La<(L?D/2?0.5), 0.15<LL1<0.5, 0.05<t<0.15, 0.5t<h1<2.5t, D<7.5, P>15, and D/P<0.5.

Abstract: An indoor unit of an air conditioner includes a cross flow fan and an indoor heat exchanger. The cross flow fan generates a flow of air. The heat exchanger has a two row part and a one row part. The one row part has an area that is smaller than the two row part, and is disposed so that it overlaps one part of the two row part (83) in an air transit direction. Furthermore, during a cooling operation, a refrigerant flows to the two row part before flowing to the one row part.

Abstract: A heat exchanger includes an auxiliary heat exchanger, which has plate-shaped first fins and a plurality of first heat transfer tubes, and a main heat exchanger which has plate-shaped second fins and a plurality of second heat transfers tubes. A plurality of burrs are present at specified intervals on edges of the first fins. The auxiliary heat exchanger and the main heat exchanger are so positioned that the edges of the first fins on which the burrs are present are in contact with edges of the second fins, and the edges having the burrs present thereon are positioned on the inner side.

Abstract: A fin (6) is provided with insertion holes (22) for receiving heat exchange tubes and a rib (15) extending generally parallel to an outer edge (25) of the fin (6). The rib (15) is placed closer to the outer edge (25) than all the insertion holes (22) are. The rib (15) is formed on the fin (6) such that when an inside diameter of the insertion holes (22) is set as D [mm], a distance between a center of the insertion hole (22) nearest to the rib (15) and the outer edge (25) is set as L [mm], a distance between a center of the rib (15) and the outer edge (25) is set as La [mm], a width of the rib (15) is set as LL [mm], a thickness of the fin (6) is set as t [mm], and a height of the rib (15) is set as h [mm], then 0.4<La<(L?D/2?0.5), and 0.15<LL<0.5, 0.05<t<0.15, 0.5t<h<2.5t.

Abstract: A flow merging and dividing device, wherein two refrigerant flows move from two inlets (31, 32) located at an inlet part (5) into a merging part (6) for merging, the drift of the two refrigerant flows is eliminated by the merging of the flows at the merging part (6), and the refrigerant flows in which the drift is eliminated by the merging of the flows at the merging part (6) flows out from three outlets (33, 35, 36) located at an outlet part (7), whereby two refrigerant flows can be discharged as three refrigerant flows again from the three outlets (33, 35, 36) after two refrigerant flows are merged so as to eliminate the drift of the two refrigerant flows.

Abstract: A brake system for a vehicle includes a liquid pressure generating device for generating a liquid pressure dependent upon a manual operation, actuators having output ports for outputting a liquid pressure dependent upon an electrical command signal from a controller, and which are adapted to be connected to a reservoir when the actuators are non-operative, and switchover valves switchable between a state in which wheel brakes are connected to the liquid pressure generating device, and a state in which the wheel brakes are connected to the actuators. In the brake system, on-off valves are connected between the output ports of the actuators and the switchover valves, and are opened when the liquid pressures output from the actuators is equal to or higher than a predetermined value.