A heat source device comprising: a combustion chamber (2) provided between a burner (31) and a heat exchanger (1); an inlet pipe (20) for allowing a fluid to be heated to flow in the heat exchanger (1); an outlet pipe (21) for allowing the fluid to be heated to flow out from the heat exchanger (1); and a winding pipe (27) wound around an outer surface of a peripheral wall of the combustion chamber (2), wherein either the inlet pipe (20) or the outlet pipe (21) has an orifice (91) for throttling a fluid flow path of the fluid to be heated flowing in the inlet pipe (20) or the outlet pipe (21).

The present invention relates to a heat exchanger having a simplified assembly structure as well as a simplified structure for heat-insulating a combustion chamber, the heat exchanger being provided with a heat exchange unit having heating medium flow channels through which a heating medium flows and combustion gas flow channels through which combustion gas combusted in the burner flows to be alternately formed and adjacent to each other in spaces between a plurality of plates, wherein the heat exchange unit comprises: a sensible heat unit which surrounds the outer side of a combustion chamber, is formed of one side area of the plates, and heats the heating medium by using sensible heat of combustion gas generated by the combustion of the burner; and a latent heat unit which is formed of the other side area of the plates, and heats the heating medium by using latent heat of water vapor included in combustion gas that has finished undergoing heat exchange in the sensible heat unit, wherein the rear of the sensible heat unit has provided thereon connection flow channels of the heating medium so that the heating medium that passed through the heating medium flow channels of the latent heat unit can flow to the heating medium flow channels of the sensible heat unit, and the rear of the sensible heat unit also has a water housing cooling unit formed thereon for heat-insulating the combustion chamber.

The present invention relates to a heat exchanger having a simplified assembly structure as well as a simplified structure for heat-insulating a combustion chamber, the heat exchanger being provided with a heat exchange unit having heating medium flow channels through which a heating medium flows and combustion gas flow channels through which combustion gas combusted in the burner flows to be alternately formed and adjacent to each other in spaces between a plurality of plates, wherein the heat exchange unit comprises: a sensible heat unit which surrounds the outer side of a combustion chamber, is formed of one side area of the plates, and heats the heating medium by using sensible heat of combustion gas generated by the combustion of the burner; and a latent heat unit which is formed of the other side area of the plates, and heats the heating medium by using latent heat of water vapor included in combustion gas that has finished undergoing heat exchange in the sensible heat unit, wherein the rear of the sensible heat unit has provided thereon connection flow channels of the heating medium so that the heating medium that passed through the heating medium flow channels of the latent heat unit can flow to the heating medium flow channels of the sensible heat unit, and the rear of the sensible heat unit also has a water housing cooling unit formed thereon for heat-insulating the combustion chamber.

The present invention relates to a heat exchanger that can enhance thermal efficiency by enabling combustion heat of combustion gas generated by the combustion of a burner to be maximally returned to a heating medium, the heat exchanger being provided with a heat exchange unit having heating medium flow channels through which a heating medium flows and combustion gas flow channels through which combustion gas combusted in the burner flows to be alternately formed and adjacent to each other in spaces between a plurality of plates, wherein the heat exchange unit comprises: a sensible heat unit which surrounds the outer side of a combustion chamber, is formed of one side area of the plates, and heats the heating medium by using sensible heat of combustion gas generated by the combustion of the burner; and a latent heat unit which is formed of the other side area of the plates, and heats the heating medium by using latent heat of water vapor included in combustion gas that has finished undergoing heat exchange in the sensible heat unit, wherein a flow channel cap is coupled to the rear of the sensible heat unit so as to provide a flow channel for combustion gas in order to enable combustion gas that passed through the combustion gas flow channels formed on the upper part of the sensible heat unit to enter into the combustion gas flow channels of the latent heat unit.

The present invention relates to a heat exchanger that can enhance thermal efficiency by enabling combustion heat of combustion gas generated by the combustion of a burner to be maximally returned to a heating medium, the heat exchanger being provided with a heat exchange unit having heating medium flow channels through which a heating medium flows and combustion gas flow channels through which combustion gas combusted in the burner flows to be alternately formed and adjacent to each other in spaces between a plurality of plates, wherein the heat exchange unit comprises: a sensible heat unit which surrounds the outer side of a combustion chamber, is formed of one side area of the plates, and heats the heating medium by using sensible heat of combustion gas generated by the combustion of the burner; and a latent heat unit which is formed of the other side area of the plates, and heats the heating medium by using latent heat of water vapor included in combustion gas that has finished undergoing heat exchange in the sensible heat unit, wherein a flow channel cap is coupled to the rear of the sensible heat unit so as to provide a flow channel for combustion gas in order to enable combustion gas that passed through the combustion gas flow channels formed on the upper part of the sensible heat unit to enter into the combustion gas flow channels of the latent heat unit.

A heat exchanger according to the present invention comprises a heat exchange portion in which heating medium flow paths, where a heating medium flows through a space between a plurality of plates, and combustion gas flow paths through which a combustion gas combusted in a burner flows are adjacently and alternatingly formed, wherein the heat exchange portion comprises a sensible heat portion, which surrounds the outside of a combustion chamber and comprises an area on one side of the plates, for heating the heating medium using the sensible heat of the combustion gas generated by combustion of the burner, and a latent heat portion, which comprises an area on the other side of the plates, for heating the heating medium using the latent heat of water vapors in the combustion gas which has completed heat exchanging in the sensible heat portion, wherein a connection passage for the heating medium is formed between the sensible heat portion and the latent heat portion, the latent heat portion comprises a heating medium inlet through which the heating medium is introduced, and a plurality of latent heat portion heating medium flow paths which are formed between the plurality of plates and communicate with the heating medium inlet in parallel, and wherein the sensible heat portion comprises a heating medium outlet through which the heating medium is discharged, and a plurality of sensible heat portion heating medium flow paths which are formed between the plurality of plates and are connected serially between the latent heat portion heating medium flow paths and the heating medium outlet.

A heat exchanger according to the present invention comprises a heat exchange portion in which heating medium flow paths, where a heating medium flows through a space between a plurality of plates, and combustion gas flow paths through which a combustion gas combusted in a burner flows are adjacently and alternatingly formed, wherein the heat exchange portion comprises a sensible heat portion, which surrounds the outside of a combustion chamber and comprises an area on one side of the plates, for heating the heating medium using the sensible heat of the combustion gas generated by combustion of the burner, and a latent heat portion, which comprises an area on the other side of the plates, for heating the heating medium using the latent heat of water vapors in the combustion gas which has completed heat exchanging in the sensible heat portion, wherein a connection passage for the heating medium is formed between the sensible heat portion and the latent heat portion, the latent heat portion comprises a heating medium inlet through which the heating medium is introduced, and a plurality of latent heat portion heating medium flow paths which are formed between the plurality of plates and communicate with the heating medium inlet in parallel, and wherein the sensible heat portion comprises a heating medium outlet through which the heating medium is discharged, and a plurality of sensible heat portion heating medium flow paths which are formed between the plurality of plates and are connected serially between the latent heat portion heating medium flow paths and the heating medium outlet.

A heat exchanger according to the present invention comprises a heat exchange portion in which heating water flow paths where heating water flows through a space between a plurality of plates, hot water flow paths through which hot water flows, and combustion gas flow paths are adjacently and alternatingly formed, wherein the heat exchange portion comprises: a heating sensible heat portion, which surrounds the outside of a combustion chamber and comprises an area on one side of the plates, for heating the heating water using the sensible heat of the combustion gas generated by combustion of the burner; a heating latent heat portion, which comprises a partial area on the other side of the plates, for heating the heating water using the latent heat of water vapors in the combustion gas which has completed heat exchanging in the heating sensible heat portion; and a hot water latent heat portion, which comprises the remaining area on the other side of the plates, for heating direct water using the latent heat of water vapors in the combustion gas which has passed through the heating latent heat portion.

A heat exchanger according to the present invention comprises a heat exchange portion in which heating water flow paths where heating water flows through a space between a plurality of plates, hot water flow paths through which hot water flows, and combustion gas flow paths are adjacently and alternatingly formed, wherein the heat exchange portion comprises: a heating sensible heat portion, which surrounds the outside of a combustion chamber and comprises an area on one side of the plates, for heating the heating water using the sensible heat of the combustion gas generated by combustion of the burner; a heating latent heat portion, which comprises a partial area on the other side of the plates, for heating the heating water using the latent heat of water vapors in the combustion gas which has completed heat exchanging in the heating sensible heat portion; and a hot water latent heat portion, which comprises the remaining area on the other side of the plates, for heating direct water using the latent heat of water vapors in the combustion gas which has passed through the heating latent heat portion.

A dual energy gas water heater is described and wherein a square flange, curved resistor style resistive heating element, is secured in a bottom portion of the tank of the water heater spaced above a top wall of the combustion chamber. A gas burner is secured in the combustion chamber and connected to a gas supply line through a gas valve. The curved resistive heating element is a low density, long life, element having a density in the range of about 20 to 80 watts/sq. inches. A switch is secured between the thermostat of the resistive heating element and the voltage supply line. A controller selectively operates the switch and the gas valve to disconnect the voltage supply line from the thermostat and/or shut-off the gas valve secured to the gas supply line depending on the desired source of energy. The controller is adapted to be optionally controlled by a utility/provider through a communication link. Renewable energy source may also be secured to an additional resistive heating element to improve the efficiency thereof.