US 2014/0209274 A1Published application

Self-pumping heat exchange unit

AssigneeHrs Investments Limited

InventorMarcos Antonio Alarcon Gonzalez

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Abstract

In addition to efficiently removing residues from the inner wall of the inner tubes (20), reducing head loss and substantially improving the heat transfer coefficient, the present invention also allows obtaining different pumping flow rates for the product fluid. More particularly, the heat exchange unit (1) stands out because it comprises an elongated rotary rod (30) arranged inside at least one inner tube (20) and provided with cleaning means comprising scraping elements (40) suitable for scraping and detaching the product fluid accumulated on the inner wall of the at least one inner tube (20); and an endless spiral (50) dimensionally suitable for surrounding the rotary rod (30) longitudinally through the spaces existing between the scraping elements (40), said endless spiral (50) being suitable for displacement of the product fluid circulating through the at least one inner tube (20), generating a self-pumping effect.

Claims10

Dependent claims

Self-pumping heat exchange unit (1) comprising an outer shell (10) provided with an inlet (11) and an outlet (12) for a heat carrier fluid;

at least one hollow inner tube (20) housed inside the outer shell (10) and also linked to an inlet (21) and an outlet (22) for a product fluid, that is, fluid to be heated or cooled;
an elongated rotary rod (30) arranged inside the at least one inner tube (20) and having cleaning means for cleaning the inner wall of the at least one inner tube (20), the heat exchange unit (1) being characterized in that said cleaning means comprise:
scraping elements (40) linked to the rotary rod (30) and suitable for scraping and detaching the product fluid accumulated or fixed on the inner wall of the at least one inner tube (20), and
an endless spiral (50) also linked to the rotary rod (30), dimensionally suitable for running along and surrounding the rotary rod (30) longitudinally through the spaces existing between the scraping elements (40), said endless spiral (50) being suitable for displacement of the product fluid circulating through the at least one inner tube (20), generating a self-pumping effect.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 14/047,712Filed 7 Oct 2013
Priority: ES P20133008825 Jan 2013
Published: 31 Jul 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

F28G 3/10
Rotary appliances: having scrapers, hammers, or cutters, e.g. rigidly mounted
F28D 7/16
Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different…
F28F 13/125
By creating turbulence, e.g. by stirring, by increasing the force of circulation: by stirring
F28F 19/008
Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers: by using scrapers