Heat transmission tube

Details Heat transmission tube Heat transmission tube

1992-01-13

1993-02-16

Rivell, John

Heat exchange

Tubular structure

With discrete heat transfer means

165133, 165184, F28F 136

Patent

active

051862522

ABSTRACT:
According to the invention, there is provided a heat transmission tube having a tube body, first grooves formed at a predetermined pitch therebetween on an outer surface of the tube body continuously along a circumferential direction, the first grooves open to an outside, and having an opening portion, a width of which is narrower than that of a bottom portion thereof, and second grooves formed at a predetermined pitch therebetween on the outer surface of tube body continuously along an axial direction, the second grooves having a depth shallower than that of the first grooves, and connecting opening portions of the adjacent first grooves to each other, wherein a projecting member is provided on a bottom surface of each of the first grooves so as to connect a side wall of each of the first grooves to another is brought into contact with the tube body. This heat transmission tube exhibits a high and stable heat transmissibility in both high and low heat flux cases.

REFERENCES:
patent: 3326283 (1967-06-01), Ware
patent: 4074753 (1978-02-01), Schmittle et al.
patent: 4216826 (1980-08-01), Fujikake
patent: 4313248 (1982-02-01), Fujikake
patent: 4549606 (1985-10-01), Sato et al.
patent: 4715433 (1987-12-01), Schwarz et al.
patent: 4733698 (1988-03-01), Sato
patent: 4796693 (1989-01-01), Kastner et al.

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