US1849874A

US1849874A - Heat interchanger

Info

Publication number: US1849874A
Application number: US303473A
Authority: US
Inventors: Huet Andre
Original assignee: Superheater Co Ltd
Current assignee: Superheater Co Ltd; Superheater Co
Priority date: 1928-04-02
Filing date: 1928-09-01
Publication date: 1932-03-15
Anticipated expiration: 1949-03-15

Description

March 15, 1932. A. HUET 1,849,874

HEAT INTERCHANGER Filed Sept. 1, 1928 2 Sheets-Sheet l I N VEN TOR.

/ I B y A TTORNE Y.

March 15, 1932. V A. HUET HEAT INTERCHANGER 2 Sheets-Sheet 2 Filed Sept. 1, 1928 v I N V EN TOR. findre 19'ye By @zffzg A TTORNE Y.

Patented Mar. 15, 1932 UNITED STTE ANDRE HUET, or PARIS, FRANCE, AssIGNon-To THEI SU'Q'PIERI-IELATER oonr'PAn OF NEW YORK; n; Y.

HEAT INTERGHANG-ER' Application filed September 1, 1928, Serial No;. 303;473, and ill-.FIBJICB April 2, 1928.

The present invention has for its object the provision of a condenser comprising a bundle of tubes placed in a shell through which a cooling fluid circulates, the characteristic of the invention consisting in the fact that said tubes have their upper ends entirely closed and are inclined to the vertical, the fluid to be condensed and the condensed fluid entering and leaving by the other end.

This arrangement has the advantage that it assures a uniform temperature in the condenser bundle and that it thus avoids the differences of expansion between the several parts of the bundle.

The condenser tubes are arranged in a position with enough inclination so that for one thing the condensate may as rapidly as possible flow into the thalweg of the tube and that the thalweg itself has a slope favoring prompt discharge of the condensate. In this way one avoids having a large portion of the surface of the condenser tube covered with water of condensation, which would interfere to a considerable extent with the heat change of heat is facilitated.

The following description which is to be read in connection with the accompanying illustrative drawings will make clear the nanner in which my invention can be put into practice.

Figs. 1, 2, 3 and 4 show in longitudinal section different forms of the condenser tubes in their natural inclination to the vertical.

The fluid to be condensed arriving at a (Figs. 1, 2 and 3) is directed along the upper sides of the condenser tubes by small tubes 1) at the lower portion of the condenser tubes arranged in the shell (Z in which circulates the cooling fluid entering at e and leaving at 6 The condenser tubes 0 are completely closed at their upper ends 0 and the inclinationof the tubesmakes-the water ofcondensation; flow quickly into the thalweg? of the tube, flow. down the latter. and arrive at the chamber 7, whence it is finally withdrawn through g It, will be understoodthat the vapor tubes I) must besufliciently high to open above the level ofthe water of condensation which may occur in the chamber 7,

The form "of theinvention in-Fig. 2 differs from that oftF ig. 1 only inthe'arrangement of :the conduit, a. by which vapor is supplied, the tubes 12 branching out on its upper side, and the tube a being coaxialwith the tube j which carries away the water of condensation.. i

In Fig. 3 the entrance 6 and the exit 6 of the cooling fluid are so arranged with respect to the condenser tubes 0 that said cooling fluid strikes them at a certain angle and on a face opposite the thalweg whereby the heat exchange is facilitated. Finally in the arrangement shown in Fig. 4 the tubes 6 extending into the lower part of the condenser tubes 0 are omitted, the condensed fluid flowing directly into the lower part of the collector 7 from which also the steam flows into the tubes 0. The arrangements of the entry tube 6 and the-exit tube 6 of the cooling fluid are again such that the fluid strikes the tubes 0 on the side opposite the thalweg.

It is evident that modifications of thedetails may be introduced to the condenser bundle which has just been described, without falling outside of the frame of the invention.

In particular the arrangement of the inclination of the condenser tubes relatively to the shell'for the circulation of the condensing fluid may be varied so that the cooling fluid may have its density diminished or increased as it becomes heated.

I claim: T

1. In apparatus of the class described, the combination of a casing, means to admit and to remove a cooling medium to and from said casing, a plurality of tubes extending up into said casing, said tubes being inclined to the vertical and closed at their upper ends, means including small tubes projecting into the mouths of said closed tubes to admit fluid to be condensed into the lower ends thereof, and means to receive the condensate from the lower ends of said closed tubes.

2. In apparatus of the class described, the combination of a casing, means to admit and to remove cooling medium to and from said casing, a plurality of tubes extending upward in said casing said tubes being inclined to the vertical and closed at their upper ends, means including small tubes projecting into the mouths of said closed tubes and lying relative 1y closer to the upper sides of the closed tubes for admitting the fluid to be condensed into the lower ends thereof, and means to receive 7 the condensate from the lower ends of the closed tubes.

v 3. Apparatus in accordance with claim 1 and in which the upper ends of the small tubes are cut off so as to make acute angles with the generatrices of the sides of the closed tubes.

4. Apparatus in accordance with claim 2 and in which the upper ends of the small tubes are cut off so as to make acute angles with the generatrices of the sides of the closed tubes.

5. Apparatus in accordance with claim 1 and in which the upper ends of the small tubes project above the levelof the condensate in the apparatus.

In testimony whereof I have signed this specification.

ANDRE HUET.