The purpose of the present invention is to provide a heat exchanger capable of suppressing boiling and lime precipitation due to local overheating of a heating medium and at the same time improving heat transmittance efficiency. The heat exchanger of the present invention for achieving said purpose comprises: heating medium flow paths, through which a heating medium flows, inside a plurality of laminated plates; and a heat exchange unit in which combustion gas flow paths, through which a combustion gas flows, are alternately formed to be adjacent to each other, wherein the heat exchange units have a heating medium differential distribution unit which enables the flow rate of the heating medium to be differentially distributed to parallel heating medium flow paths of the heat exchange unit such that the flow rate of the heating medium passing through the parallel heating medium flow paths is balanced with the quantity of absorbed heat transmitted to the plates.

An oil boiler according to the present disclosure includes a combustion chamber in which a combustion reaction occurs, a burner including a fuel nozzle that sprays fuel of an oil type into the combustion chamber, an air nozzle that injects air into the combustion chamber, and a spark plug that ignites a mixture of the fuel and the air, an air supply pipe that guides the air supplied to the air nozzle, a duct that releases combustion gas, a heat exchanger that heats heating water by heat from the combustion reaction, and a case that receives said components. The duct includes a flue connecting adaptor to which a corrugated pipe and a flue are connected, in which the corrugated pipe is connected to an inlet of the air supply pipe into which the air is introduced, and the flue releases the combustion gas to the outside of the case.

The present invention discloses a burner, a gas water heater and a processing method of fire row, wherein the burner comprising: a plurality of fire rows; an air channel is formed between at least two fire rows; the fire row has a burning substrate; the burning substrate is provided with main burning holes; the burning substrate is further provided with auxiliary burning holes downstream of the main burning holes; at least one the auxiliary burning hole is disposed on at least one side of the main burning hole in a length direction of the burning substrate; flame of the auxiliary burning hole intersect with flame of the main burning hole; and a frame for mounting the fire rows. The burner, the gas water heater and the processing method of the fire rows disclosed in the present invention can help to decrease flame height, facilitate manufacturing and reduce costs.

Cogeneration system (200, 300) comprising: a boiler (201, 301) able to heat water for domestic use; a combustor (201a, 301a) placed into the boiler; a compressor (204, 304); a heat exchanger (202, 302) for the exchange of thermal energy between the combustion fumes generated in the combustor (201a, 301a) and a fluid coming from the compressor (204, 304); a gas turbine (203, 303); a current generator (205, 305) and a current converter (206, 306) able to produce electrical energy; a main fumes/water exchanger (207, 307) able to recover thermal energy.

The cogeneration system (200, 300) comprises also a by-pass valve (210, 310) configured to adjust the flow of fluid entering the gas turbine (203, 303).

A portable hot water supply tank is adapted to be used with a heat source, and includes a water storage unit, a heat exchange unit, and a circulation unit. The water storage unit includes a base member defining a lower water chamber. The heat exchange unit includes a heat exchanger connected to the base member. The circulation unit includes an inlet pipe and an outlet pipe. The heat exchanger is movable relative to the base member between an unfolded position and a folded position. When the heat exchanger is at the first position, water stored in the lower water chamber is drawn into the inlet pipe, flows through the heat exchanger to be heated by the heat source, and eventually flows back to the lower water chamber via the outlet pipe.

A combined heat and power (CHP) system is installed with a power lock-out feature preventing flow of heated working fluid to an expander driving a generator generating electrical power until installation by a licensed person is completed, whereby heat can be provided to a building substantially immediately after installation of the CHP system, while power generation can be deferred until convenient.

A flow regulating device (60) and a gas water heater (1) having the same are provided. The flow regulating device (60) includes a housing (100) defining a water inlet (110) and a water outlet (120) therein; a flow regulating assembly (200) disposed in the housing (100), a temperature-flow regulating orifice (230) located between the water inlet (110) and the water outlet (120) being defined in the flow regulating assembly (200), and the flow regulating assembly (200) further including a regulating component for regulating opening of the temperature-flow regulating orifice (230); a temperature sensitive assembly (300) disposed in the housing (100) and connected to the regulating component, and the temperature sensitive assembly (300) driving the regulating component according to temperature of water in the housing (100). The flow regulating device has advantages of short regulating time, and high regulating precision.

In a combustion apparatus including: a burner made up of a burner body and a sheet-metal combustion plate; and a combustion box which has a connection flange part to be coupled to a body flange part in a circumference of the burner body, the combustion box has disposed therein water passages as a cooling means, and a thermal insulation material which overlaps that portion of the combustion plate flange part which faces an inner space of the combustion box. A fixing plate for the thermal insulation material is attached to the combustion plate flange part. The fixing plate is provided with pressing claws for pressing in position the thermal insulation material so as to press and prevent the thermal insulation material from getting released away from the fixing plate. And water passages are disposed in a manner to contact the pressing claws.

A combustion device includes a combustion control section which controls combustion in the combustion device; a setting section operated to set information indicating whether or not a plurality of combustion devices are in a common vent discharge state; and a memory section which stores therein connection configurations with the other combustion control sections to which the combustion control section is communicatively connected, and the combustion control section determines whether or not the combustion control section can communicate with a linkage control section or the other combustion control sections, and inhibits combustion in the combustion device to which the combustion control section belongs, in a case where the combustion control section determines that the combustion control section cannot communicate with the linkage control section or at least one of the other combustion control sections and the common vent discharge state is set by the setting section.

A fluid heating system including a burner unit is operated based on feedback control loops. The fluid heating system comprises a burner unit configured to heat a fluid, a sensor configured to sense a characteristic of the appliance, and a controller coupled to the burner unit and the sensor. The controller includes an electronic processor and a memory. The controller is configured to receive a first signal corresponding to the characteristic from the sensor, determine, based on the first signal, a first feedback loop control, control combustion of the burner unit based on the first feedback loop control, determine, based on the first feedback loop control, a second feedback loop control, and control combustion of the burner unit based on the second feedback loop control.