Patent ID: 9557749
Date: 2017-01-31
CPC Classifications: F28D,F28F,G05D,Y10T

Claim:
1. A heat exchanger comprising: a plurality of tubular members disposed in a stack, the tubular members having spaced-apart wall portions including flow openings for the flow of fluid between the tubular members; an anti-leakage valve including: a housing having a hollow plug portion with opposed plug walls, one of the plug walls having defined therein one of an inlet and an outlet opening, said plug portion further having defined therein the other of the inlet and outlet opening; said plug portion being disposed in the stack with the plug walls being sealingly mounted between selected ones of said spaced-apart wall portions to allow fluid flow between said inlet and outlet opening and respective flow openings in said selected ones of said spaced-apart wall portions; an actuator portion located adjacent to the plug portion; and an actuator mounted in the actuator portion and having a plunger extending into the plug portion, the plunger reciprocating to block and unblock said one of the inlet and outlet opening, a bypass valve including: a housing having a hollow plug portion with opposed plug walls, one of the plug walls having defined therein one of an inlet and an outlet opening, said plug portion further having defined therein the other of the inlet and outlet opening; said plug portion being disposed in the stack with the plug walls being sealingly mounted between selected ones of said spaced-apart wall portions to allow fluid flow between said inlet and outlet opening and respective flow openings in said selected ones of said spaced-apart wall portions; an actuator portion located adjacent to the plug portion; and an actuator mounted in the actuator portion and having a plunger extending into the plug portion, the plunger reciprocating to block and unblock said one of the inlet and outlet opening wherein the tubular members are formed of plate pairs having enlarged distal end portions; and wherein the plungers of the bypass valve and the anti-leakage valve are coupled together by a rod, the rod defining one of the actuators.