초록 ▼

A multiple purpose instantaneous gas water heater comprises a combination of a larger combustion capacity type first burner with a smaller combustion capacity type second burner. Each of the burners can be controlled by a proportional combustion control method and/or an intermittent combustion contr

A multiple purpose instantaneous gas water heater comprises a combination of a larger combustion capacity type first burner with a smaller combustion capacity type second burner. Each of the burners can be controlled by a proportional combustion control method and/or an intermittent combustion control method. It is possible to combine these functions within a microcomputer system so as to use each or both burners selectively, or both together, so that it is possible to select water from a wide range of hot water temperatures or to select a target temperature.

대표청구항 ▼

A multiple-purpose instantaneous gas water heater comprising: (a) a first burner; (b) a second burner; (c) a heat exchanger positioned adjacent said first burner and said second burner, said first and second burner being operably connected to selectively heat water contained in said heat exchanger;

A multiple-purpose instantaneous gas water heater comprising: (a) a first burner; (b) a second burner; (c) a heat exchanger positioned adjacent said first burner and said second burner, said first and second burner being operably connected to selectively heat water contained in said heat exchanger; (d) means for independent setting of the highest and lowest combustion capacities of said first burner and said second burner, wherein the highest combustion capacity of said second burner is slightly larger than the lowest combustion capacity of said first burner; (e) means for detecting a water flow rate; (f) means for detecting the temperature of feeding water; (g) means for detecting the temperature of hot water, said means for detecting being arranged sequentially, respectively, along a feeding water pipeline channel extending through said heat exchanger; (h) a control panel including means for setting water temperature; (i) a microprocessor including: (i) an arithmetic-logic means for receiving data from each of said means for detecting and said means for setting water temperature; and (ii) means for defining a required heat load in response to said data; (j) means for selectively operating said first burner and said second burner depending upon the required heat load automatically determined by said microprocessor; and (k) means for selectively generating a combustion-off signal for intermittently operating said second burner; (l) means for generating a proportional combustion signal for operating said first burner; and (m) means for generating a proportional combustion signal for operating said first burner and said second burner, said means for selectively generating being operable in response to a burner selected by said means for selectively operating a burner; (n) first and second electrical valves; (o) first and second proportional control valves; and (p) a fuel gas feeding pipeline, said first and second electrical valves being operable to selectively open said fuel gas feeding pipeline and said first and second proportional valves including means for continuously controlling the fuel gas flow rate through said gas feeding pipeline.