Brazeless heat exchanger of the tube and shell type
AssigneeUnited Aircraft Products, Inc.
InventorsJohn E. Wunder, George Hronek, Thomas J. Gaudion
Life of this patent
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Abstract
A tube and shell heat exchanger of a brazeless type. A single header construction mounts tubes made for high efficiency heat transfer and supported for damage free operation. A removable mounting plate confines a tube and header core in a shell and is adapted for free mounting and for controlled inflow and outflow of the tube side and shell side fluids. By-passing flow of shell side fluid within the shell is obviated by a recessed mounting of the header allowing a standard spacing of the tube bundle relatively to shell interior wall surfaces.
Claims11
A brazeless heat exchanger of the tube and shell type, including
- a. a tubular shell closed at one end and open at the other;
- b. at least a portion of the open end of said shell being generally radially enlarged and having formed therein inlet and outlet flow passages for a shell side fluid opening at their one ends into the shell interior at longitudinally spaced apart locations therein;
- c. opposite ends of said passages opening through said enlarged shell portion at the said open end of said shell;
- d. a mounting plate fixed to said shell in a substantially closing relation to the said open end thereof;
- e. said mounting plate having inlet and outlet openings for the shell side fluid aligning in the installation of said mounting plate with the said opposite ends of said inlet and outlet flow passages;
- f. said mounting plate having other inlet and outlet openings for a tube side fluid;
- g. a header plate confined by said mounting plate to a position within the open end of said shell;
- h. said mounting plate and said header plate cooperating to define separated inlet and outlet chambered areas therebetween communicating respectively with the said inlet and outlet openings for the tube side fluid;
- i. means for establishing a peripheral seal about said header plate inhibiting a mixing of tube side and shell side fluids around the header plate periphery;
- j. a plurality of U-shaped tubes having their opposite ends fixed in apertures in said header plate and their intermediate portions accommodated in said shell;
- k. at least certain of said tubes having their one ends communicating through said header plate with said inlet chambered area and their opposite ends communicating through said header plate with said outlet chambered area;
- and
- l. means for directing shell side fluid through said shell interior from said one end of said inlet flow passage for shell side fluid to the said one end of the outlet flow passage in a path taking it in plural passes over intermediate portions of said tubes.
Dependencies are inferred from the claim text.