Heater and a method for delivering heat energy from a water cooled two cycle marine engine

A heater for a water cooled two cycle marine engine comprising:

• an exhaust expansion chamber operably coupled with a two cycle marine engine, and wherein the two cycle marine engine produces a source of heated water;
• a heater coupled in fluid flowing relation relative to the exhaust expansion chamber, and which receives the source of heated water;
• a flow restrictor coupled in fluid flowing relation relative to both the heater and the exhaust expansion chamber, and which delays the delivery of the heated water from the exhaust expansion chamber to the heater to increase the temperature of the heated water;
• and
• a thermostat operably coupled to the flow restrictor, and which defines a fluid by pass which allows heated water to be diverted around the flow restrictor, and wherein the thermostat senses the temperature of the heated water passing through the flow restrictor, and wherein the thermostat upon sensing a given water temperature will divert the heated water into the fluid by pass.

A heater for a water cooled two cycle marine engine, comprising:

• an exhaust expansion chamber which is operably coupled with a marine engine, and which receives water which has been previously heated by the operation of the marine engine;
• a heater for receiving the heated water which has been previously delivered to the exhaust expansion chamber, and which further radiates heat energy derived from the heated water to the ambient environment;
• a conduit coupling the exhaust expansion chamber and the heater in fluid flowing relation one relative to the other;
• a flow restrictor mounted in fluid metering relation along the conduit and between the heater and the exhaust expansion chamber, and wherein the flow restrictor increases the temperature of the water which has been delivered to the exhaust expansion chamber;
• and
• a thermostat made integral with the flow restrictor, and wherein the thermostat opens to allow the heated water to by pass the flow restrictor when the heated water has a temperature of greater than about 195 degrees F.

A heater for a water cooled two cycle marine engine comprising:

• a base assembly drivingly coupled to a water cooled two cycle marine engine and which facilitates the withdrawal of water from a source of water, and which further supplies a portion of the source of water to the two cycle marine engine to remove heat energy generated by the two cycle marine engine during operation, and wherein the heated water is returned, at least in part, to the base assembly, and wherein a portion of the withdrawn water is returned to the source of water, and wherein the base assembly delivers the portion of the source of water to the two cycle marine engine at a water pressure;
• an exhaust expansion chamber borne by the base assembly, and disposed in fluid receiving relation relative to the heated water which is returned to the base assembly from the two cycle marine engine, and wherein the two cycle marine engine produces a heated exhaust during operation, and wherein the heated exhaust further increases the temperature of the heated water which is received in the exhaust expansion chamber;
• a first conduit coupling the exhaust expansion chamber and the base assembly in fluid flowing relation one relative to the other;
• a flow restrictor coupled in fluid flowing relation relative to the first conduit, and positioned downstream relative to the exhaust expansion chamber and upstream of the base assembly, and wherein the flow restrictor restricts the flow of heated water departing from the exhaust expansion chamber so as to increase the temperature of the heated water and further increases the water pressure experienced by the two cycle marine engine;
• a thermostat operably coupled with the flow restrictor and disposed in selective fluid metering relation along the conduit, and wherein the thermostat upon sensing a predetermined temperature of the heated water opens to cause the heated water to by pass the flow restrictor;
• and
• a heater coupled in fluid flowing relation along the conduit and positioned downstream of the thermostat and flow restrictor and upstream from the base assembly, and wherein the heater receives the heated water traveling along the conduit and radiates the heat energy provided by the heated water to the ambient environment.

A method for delivering heat energy from a water cooled two cycle marine engine, comprising:

• providing a two cycle marine engine which produces a source of heated water having a water pressure;
• providing an exhaust expansion chamber which is operably coupled to the two cycle marine engine and which receives the source of heated water;
• providing a heater which is coupled in fluid flowing relation relative to the exhaust expansion chamber and which receives the heated water;
• providing a flow restrictor which is coupled in fluid flowing relation relative to the source of heated water
• delaying the delivery of the heated water from the exhaust expansion chamber to the heater by means of the flow restrictor to increase the temperature of the heated water;
• and
• providing a thermostat which is operably coupled with the flow restrictor and which diverts heated water around the flow restrictor when the heated water reaches a given temperature.