Abstract: A multilayer electronic component includes a body including a dielectric layer and an internal electrode alternately disposed with the dielectric layer, and an external electrode disposed on the body. A ceramic layer is disposed between the dielectric layer and the internal electrode. When an area ratio occupied by pores with respect to the ceramic layer is Sp1 and an area ratio occupied by pores with respect to the dielectric layer is Sp2, Sp1 is less than 5%, and Sp1<Sp2 is satisfied.

Abstract: A multilayer electronic component includes a body including a capacitance formation portion including dielectric layers and internal electrodes alternately disposed in a first direction, and a cover portion disposed on both end surfaces of the capacitance formation portion, facing each other in the first direction, and having a first surface and a second surface opposing each other in the first direction, a third surface and a fourth surface connected to the first and second surfaces and opposing each other in a second direction, and a fifth surface and a sixth surface connected to the first to fourth surfaces and opposing each other in a third direction, and external electrodes disposed on the third and fourth surfaces. The internal electrodes and the dielectric layers protrude more outwardly than the cover portion in the second direction, and a groove is disposed at an end of the dielectric layer in the second direction.

Abstract: A fin and tube type heat-exchanger having a plurality of 6 mm or smaller heat tubes to allow refrigerant to move therein includes a plurality of cooling fins arranged at predetermined intervals, each cooling fin having a number of joint holes arranged in one or more stages, and a number of slits between the joint holes formed on each stage. Each slit has a projecting segment with an open portion corresponding to the direction of air flow and a pair of standing segments formed at both sides of the projecting segment for guiding the direction of air flow. The projecting segments project in the same direction from the surface of each cooling fin, and the slits are grouped in five rows. The heat tubes pass through and are jointed with the joint holes, respectively. The heat exchanger reduces pressure loss, optimizes heat-exchange efficiency, reduces manufacturing costs, and adapts to alternative refrigerants.

Abstract: A fin and tube type heat-exchanger having a plurality of 6 mm or smaller heat tubes to allow refrigerant to move therein includes a plurality of cooling fins arranged at predetermined intervals, each cooling fin having a number of joint holes arranged in one or more stages, and a number of slits between the joint holes formed on each stage. Each slit has a projecting segment with an open portion corresponding to the direction of air flow and a pair of standing segments formed at both sides of the projecting segment for guiding the direction of air flow. The projecting segments project in the same direction from the surface of each cooling fin, and the slits are grouped in five rows. The heat tubes pass through and are jointed with the joint holes, respectively. The heat exchanger reduces pressure loss, optimizes heat-exchange efficiency, reduces manufacturing costs, and adapts to alternative refrigerants.

Abstract: A fin and tube type heat-exchanger having a plurality of 6 mm or smaller heat tubes to allow refrigerant to move therein includes a plurality of cooling fins arranged at predetermined intervals, each cooling fin having a number of joint holes arranged in one or more stages, and a number of slits between the joint holes formed on each stage. Each slit has a projecting segment with an open portion corresponding to the direction of air flow and a pair of standing segments formed at both sides of the projecting segment for guiding the direction of air flow. The projecting segments project in the same direction from the surface of each cooling fin, and the slits are grouped in five rows. The heat tubes pass through and are jointed with the joint holes, respectively. The heat exchanger reduces pressure loss, optimizes heat-exchange efficiency, reduces manufacturing costs, and adapts to alternative refrigerants.

Abstract: A fin and tube type heat-exchanger having a plurality of 6 mm or smaller heat tubes to allow refrigerant to move therein includes a plurality of cooling fins arranged at predetermined intervals, each cooling fin having a number of joint holes arranged in one or more stages, and a number of slits between the joint holes formed on each stage. Each slit has a projecting segment with an open portion corresponding to the direction of air flow and a pair of standing segments formed at both sides of the projecting segment for guiding the direction of air flow. The projecting segments project in the same direction from the surface of each cooling fin, and the slits are grouped in five rows. The heat tubes pass through and are jointed with the joint holes, respectively. The heat exchanger reduces pressure loss, optimizes heat-exchange efficiency, reduces manufacturing costs, and adapts to alternative refrigerants.

Abstract: Disclosed is a fin and tube type heat-exchanger, which has a number of heat tubes of 6 mm or smaller to cause a reduction of the pressure loss and to prevent a drop in heat-exchange efficiency. Furthermore, the fin and tube type heat-exchanger can obtain the optimum heat-exchange efficiency, reduce the manufacturing cost and adapt to alternative refrigerants.

Abstract: Fin tube heat exchanger including heat exchange tubes each having an inside for flow of fluid therethrough, and sheets of cooling fins stacked at fixed intervals each having the heat exchange tubes passed therethrough in a row pitch L2, a direction along an air flow, in a range of 1.8 D0≦L2≦2.2 D0and in a step pitch S2, a direction perpendicular to the air flow, in a range of 3.3 D0≦S2≦4.5 D0, where D0denotes a diameter of the heat exchange tube, and projection pieces between the tubes opened for the air flow, thereby reducing a power consumption, noise, to improve reliability of the user, and saving production cost and making the heat exchanger compact.

Abstract: Disclosed is a fin and tube type heat-exchanger, which has a number of heat tubes of 6 mm or smaller to cause a reduction of the pressure loss and to prevent a drop in heat-exchange efficiency. Furthermore, the fin and tube type heat-exchanger can obtain the optimum heat-exchange efficiency, reduce the manufacturing cost and adapt to alternative refrigerants.