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) an independently operable second burner and a heat exchanger, said first and second burners being positioned adjacent to said heat exchanger, said gas water heater further comprising means for setting the highest a

A multiple-purpose instantaneous gas water heater comprising: (a) a first burner; (b) an independently operable second burner and a heat exchanger, said first and second burners being positioned adjacent to said heat exchanger, said gas water heater further comprising means for setting the highest and lowest combustion capacities of said burners, wherein the highest combustion capacity of said second burner is slightly larger than the lowest combustion capacity of said first burner; (c) means for detecting a water flow rate, means for detecting the temperature of feeding water, and means for detecting the temperature of hot water, all three of said detecting means being arranged, respectively, along a feeding water pipeline channel extending through said heat exchanger; (d) a control panel including means for setting water temperature; (e) a microprocessor with arithmetic-logic means for receiving data from each of said detecting means and said temperature setting means and for defining a required heat load in response to the data received; and (f) means for selecting at least one of said burners for operation in accordance with the value of the required heat load determined by said microprocessor.