摘要:
A board-plank premixing burner port arrangement which increases durability by preventing a large force from being applied to a burner-fixing structure despite accumulated thermal expansion caused by red heat on a burner surface. A burner body unit includes partially cut and stacked plates. The plates form a gas mixture passage and a burner port, are disposed such that cut parts of the neighboring plates intersect one another. The board-plank premixing burner port arrangement has increased combustion efficiency by reducing burner port deformation, and is easily manufactured at a low cost through a simplified installation structure of the burner port.
摘要:
The present invention relates to a heat exchanger and a manufacturing method of a heat exchanging pipe composing it that are capable of preventing the flow of exhaust gas from being obstructed because the heat exchanging pipe is expanded and a space between the heat exchanging pipes is narrowed due to a water pressure of heating water flowing in the inside of the heat exchanging pipe. In order to implement this, according to the present invention, in a heat exchanger with a heat exchanging pipe where heating water flows therein and that has a rectangular cross section in which a width of a side being in contact with combustion gas is larger than a height, the heat exchanging pipe has a shape for offsetting deformation by previously considering deformation of the heat exchanging pipe generated by water pressure of the heating water flowing therein. According to the present invention, when the water pressure of the heating water is applied to the inside of the heat exchanging pipe, a cross section of the heat exchanging pipe is deformed to a shape ideal for exchanging heat, whereby the combustion gas can smoothly pass a space between the heat exchanging pipes.
摘要:
Provided is a method for operating a non-condensing boiler at maximum non-condensation efficiency, and more particularly a method for operating a non-condensing boiler, capable of supplying an appropriate amount of excess air for combustion of a burner, avoiding damaging a heat exchanger due to the condensed water generated at the heat exchanger, and effectively improving the heat efficiency. The method comprises the steps of: sensing a temperature of exchange water introduced into a heat exchanger and a temperature of supply water discharged from the heat exchanger and calculating an average temperature from the two temperatures to obtain a maximum concentration of CO using information stored in a controller; calculating a ratio of excess air (λ) from the maximum concentration of CO using a combustion equation chosen depending on a fuel used; checking from a combustion characteristic curve whether or not the excess air ratio (λ) is within a stable combustion region; when the excess air ratio (λ) is within the stable combustion region, setting this excess air ratio to the control target value, and when the excess air ratio (λ) is less than a lower limit of the stable combustion region, setting a minimum excess air ratio of the stable combustion region to the control target value; calculating a target value of air flow suitable for the current consumption amount of fuel based on the set excess air ratio; and performing feedback control with respect to the air flow target value and a value input from an air flow sensor. With this configuration, no condensation takes place during operation of the non-condensing boiler, so that the boiler can have increased durability, be easily assembled at inexpensive production costs, be made compact, and obtain maximum heat efficiency under a non-condensation condition.
摘要:
A latent heat exchanger of a condensing boiler, in which the condensing boiler includes a sensible heat exchanger absorbing combustion sensible heat generated by a burner, a latent heat exchanger absorbing latent heat of water vapor contained in a combustion product heat-exchanged by the sensible heat exchanger, an exhaust hood discharging the combustion product flowing through the latent heat exchanger, and a condensed water outlet discharging condensed water generated from the latent heat exchanger. In the latent heat exchanger the combustion product burnt by the burner flows through the sensible heat exchanger, is vertically raised toward the latent heat exchanger, is slantingly lowered in an outward direction at an acute angle from a horizontal plane, is heat-exchanged by the latent heat exchanger, is vertically raised, and is discharged to the exhaust hood.
摘要:
A heat exchanger of a non-condensing storage type boiler for preventing condensation is provided. The heat exchanger include a heating water outflow port installed on an upper portion of the boiler, a heating water inflow port installed lower than the heating water outflow port, and an internal pipe extending spirally from the heating water inflow port and being installed in a water tube of the boiler. The internal pipe is connected to an extension pipe that extends through a re-entry outlet passing through a wall of the boiler to be connected with a re-entry inlet.
摘要:
A gas burner for simplifying assembling and manufacturing of a burner flame hole unit by overlapping plates. Portions of the plates are cut so that the cut portions communicate with each other. Flame holes and mixture channels for a mixture of gas and air pass through a gap between the cut portions. The cut portions overlap and communicate with each other between adjacent plates, thereby forming flame holes and channels for flow of the mixture of gas and air through gaps between the cut portions.
摘要:
A device for preventing initial hot water from being discharged from a double pipe heat exchanger and a method of controlling the same, which can temporarily mix cold water with hot water so as to decrease the temperature of the discharged hot water when the high temperature water is initially discharged from the double pipe heat exchanger.
摘要:
Disclosed are an instantaneous boiler and a double pipe heat exchanger for the instantaneous boiler supplying heating water and hot water, which can obtain hot water output larger than heating water output, simultaneously use the heating water and the hot water, and have a simple piping structure. The heat exchanger includes: an outer pipe used for a hot water pathway, to which combustion heat is directly transferred from a burner in a combustion chamber; and an inner pipe used for a heating water pathway and extending through the outer pipe. The boiler includes: a heat exchanger including an outer pipe used for hot water pathway, to which combustion heat is directly transferred from a burner in a combustion chamber, and an inner pipe used for heating water pathway, which extends through the outer pipe; a heating water supply pipe connected to the inner pipe of the heat exchanger; a heating water line connected to the heating water supply pipe; and a heating water returning pipe connected to the inner pipe, wherein the inner pipe of the heat exchanger, the heating water supply pipe, the heating water line, and the heating water returning pipe are connected to one another in series.
摘要:
Disclosed is a hot water supplying apparatus having an auxiliary heat exchanger. The hot water supplying apparatus comprises: a heat exchanger including an inlet pipe for introducing heating water into the heat exchanger, and first, second, and third heat exchanging pipes connected to the inlet pipe and sequentially arranged; and an auxiliary heat exchanging device installed at an inlet port of the heat exchanger through which the heating water is introduced, the auxiliary heat exchanging device including a first auxiliary heat exchanging pipe connecting the inlet pipe to the first heat exchanging pipe, a second auxiliary heat exchanging pipe connecting the second heat exchanging pipe to the third heat exchanging pipe, and heat transfer fins for transferring heat energy from the second auxiliary heat exchanging pipe to the first auxiliary heat exchanging pipe.
摘要:
Disclosed are a system and a method for precisely controlling an air fuel ratio of an oil burner, which is extensively used in a household boiler, an industrial boiler, or a heater, using an air pressure sensor. The system includes a power supplying part, a fan for supplying air required for combustion of the oil burner by receiving driving voltage from the power supplying part, a fan driving part serving as a controller which drives the fan, an air pressure sensor, which is installed at a side of a flow path of air supplied from the fan so as to detect an amount of the supplied air, and a control part for outputting an optimum RPM of the fan to the fan driving part by comparing a signal detected by the air pressure sensor with preset data related to an optimum amount of air. The method includes the steps of detecting an amount of air being supplied through a fan using the air pressure sensor, calculating an optimum RPM of the fan using a controller by comparing a signal about the amount of the air with preset data related to an optimum amount of air, outputting the RPM calculated by means of the controller to a fan driving part, and rotating the fan according to the calculated RPM input into the fan driving part.