Patent ID: 9074799
Filing Date: 2015-07-07
Classification: F25B

Abstract:
1. A cooling-storage type heat exchanger comprising: a first and a second header tanks; multiple refrigerant tubes extending in a vertical direction, each of which has a refrigerant passage, wherein the refrigerant tubes are arranged at distances in a tube-arrangement direction and between the first and second header tanks, so that refrigerant flows through the refrigerant passage at least from one of the first and second header tanks to the other header tank; a cooling-storage container having a cooling-storage material therein and arranged between neighboring refrigerant tubes, wherein a side wall of the cooling-storage container is opposing to a side wall of the refrigerant tube in the tube-arrangement direction; and multiple convex portions outwardly projecting and multiple concave portions inwardly projecting, which are formed in the side wall of the refrigerant tube and/or the cooling-storage container and which are alternately arranged in the vertical direction, wherein the refrigerant tubes are jointed to the cooling-storage container at such first portions at which the convex portions are formed, while the refrigerant tubes are separated from the cooling-storage container at such second portions at which the concave portions are formed, so that air passages are formed at the second portions through which outside air passes between the refrigerant tubes and the cooling-storage container, and wherein a sectional area of the air passage, which is formed in a lower portion of the cooling-storage container below a predetermined height in the vertical direction and between the refrigerant tubes and the cooling-storage container, is made larger than that of the air passage, which is formed in an upper portion of the cooling-storage container above the predetermined height in the vertical direction and between the refrigerant tubes and the cooling-storage container.