Microwave boiler and hot water heater

A combination boiler and hot water heater comprising:

• (a) a boiler cabinet comprising and a magnetron compartment and a heating compartment, such that the magnetron compartment contains one or more microwave magnetrons which are electrically connected to one or more magnetron circuits and electromagnetically coupled with one or more microwave guide horns, which microwave guide horns direct microwaves generated by the magnetrons into the heating compartment;
• (b) a bi-planar directional flow water jacket located in the heating compartment, which bi-planar directional flow water jacket is an elongated plenum having a horizontal plane and a vertical plane, and which bi-planar directional flow water jacket has an external water entry port, through which unheated water from a hydronic space heating system enters the bi-planar directional flow water jacket, and an external water exit port, through which water heated by the magnetrons exits from the bi-planar directional flow water jacket to circulate in the hydronic space heating system;
• (c) a plurality of jacket frames and interframe corridors comprising the internal structure of the bi-planar directional flow water jacket, wherein adjacent jacket frames are separated by interframe corridors, and adjacent jacket frames are hydraulically interconnected by a plurality of frame ports that passes through the interframe corridors, with each jacket frame being an elongated plenum having a frame port at either end, such that the direction of flow with respect to the horizontal plane of the bi-planar direction flow water jacket is reversed in each successive jacket frame, thereby creating a circuitous cross-flow flow pattern in the horizontal plane of the bi-planar direction flow water jacket;
• (d) a plurality of flow guides within each jacket frame, which flow guides are rectangular baffles aligned with the vertical plane of the bi-planar directional flow water jacket, such that the orientation of successive flow guides alternates between upward projecting and downward projecting, thereby directing the water flow through the jacket frame in a circuitous pattern in the vertical plane of the bi-planar direction flow water jacket;
• (e) a length of heat exchange tubing extended sinuously through one or more of the interframe corridors in the vertical plane of the bi-planar directional flow water jacket, such that cold tap water enters the heat exchange tubing through a tap water inlet and is heated both by exposure to microwave emitted by the magnetrons and by conduction of heat from heated water in the jacket frames adjoining the interframe corridors on either side, and such that hot tap water exits from the heat exchange tubing through a hot water outlet which is connected through an external plumbing system to one or more hot water faucets;
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• (f) one or more aquastats inserted within one or more of the jacket frames, which aquastats are electrically connected to the magnetrons and turn the magnetrons on whenever the water temperature in any one of the jacket frames falls below a preset temperature level, and which aquastats turn the magnetrons off whenever the temperature in all of the jacket frames is above the preset temperature level.