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Temperature control of heat exchanger with bypass
| Details |
Inventors: Block, Leo; Ashton, Larry;
Assignee: Raypak, Incorporated (Westlake Village, CA)
Primary Examiner: Myhre; Charles J.
Assistant Examiner: LaTulip; Margaret A.
Attorney, Agent or Firm: Herzig & Walsh, Inc.
A heat exchanger or boiler has a bypass between the inlet and the outlet. The outlet includes a chamber having a partition with a thermostatically controlled valve, which controls flow of heating medium from the heat exchanger to the outlet connection. The thermostat maintains the temperature at the chamber. The bypass is from an inlet chamber to the space beyond the thermostat. The thermostatic valve, itself, is of a typical known construction consisting of a valve member actuated relative to a port in a plate by means of a thermostatic element axially positioned relative to the valve member. The plate forms part of a partition formed in a header member which forms a chamber at the outlet of the heat exchanger from which the heating medium flows through the thermostatic valve, to the outlet conduit. The bypass is controlled by a plate partially obstructing a passageway and it may be flexible to respond to flow of medium to have a throttling effect. |
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DETAILED DESCRIPTION What is claimed is: 1.
In a flow governor system adapted for controlling a heat exchanger of a type having a fluid inlet and a fluid outlet with bypass means from the inlet to the outlet, the improvement comprising in combination, means forming an enclosure for receiving heated fluid and having a valve port, a valve member for controlling said valve port, temperature responsive means responsive to temperature of fluid from the heat exchanger for adjusting said valve member, and means forming a bypass port providing communication to the downstream side of said valve port of fluid from said inlet which mixes with fluid downstream of said valve port passing to said fluid outlet, said means forming a bypass port being constructed to provide for flow independently of said temperature responsive means.
2.
Flow governing means as in claim 1, including a plate extending partially across the bypass port.
3.
Flow governing means as in claim 2, wherein said plate is constructed to be able to flex when fluid impinges on it whereby to adjust the size of the bypass port.
4.
Flow governing means as in claim 1, wherein said heat exchanger is of a tube type having headers, one of said headers having partition means forming said enclosure and including a part having said valve port therein.
5.
Flow governing means as in claim 4, wherein said partition part has an opening therein, a bracket member secured over said opening, and having said valve port in it and said valve member and temperature responsive means being carried by the said bracket in a manner to control the said valve port.
6.
Flow governing means as in claim 5, wherein said bracket has extending means positioned to support said temperature responsive means.
7.
Flow governing means as in claim 5, including said partition having a portion extending partially between side walls of the header and a plate extending partially across the bypass port towards a wall of said one header.
8.
Flow governing means as in claim 7, wherein said plate is constructed to be able to flex when fluid impinges on it whereby to throttle the bypass port
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