Kyungdong Everon co., Ltd Patent applications |
Patent application number | Title | Published |
20090283249 | Dual Pipe Heat Exchanger of Boiler for House Heating and Hot Water - Disclosed is a double pipe heat exchanger for a boiler supplying heating water and hot water, which can prevent water from being condensed even if cold heating water or cold water is introduced into an inlet of the heat exchanger in the boiler for supplying heating water and hot water The heat exchanger includes: a plurality of outer heating water pipes to which combustion heat is applied from a burner of a combustion chamber; a plurality of inner pipes, each of which is inserted in each outer pipe; a returned heating water pipe in which cold heating water is introduced; and a cold water pipe in which cold water is introduced, wherein the returned heating water pipe and the cold water pipe are connected to one of the inner pipes. The heat exchanger has a structure in that returned cold heating water or cold water is firstly introduced into the inner pipe of an heat exchanger, sufficiently preheated, and introduced into the outer pipe of the heat exchanger again, thereby preventing water from being condensed around an inlet of the heat exchanger through which returned cold heating water or cold water is introduced. | 11-19-2009 |
20090133641 | Device for Preventing Initial Hot Water Supplying in Concentric Tube Type Heat Exchanger and Its Control Method - Disclosed are 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. The device for preventing initial hot water from being discharged from a double pipe heat exchanger which includes a cold water pipe into which a cold water is introduced, a hot water heat exchanging pipe for absorbing combustion heat of a burner so as to heat the cold water to hot water and to discharge the hot water, a hot water pipe for supplying high temperature hot water discharged from the hot water heat exchanging pipe, and a heating water heat exchanging pipe having both ends connected to a heating water returning inlet and a heating water discharging outlet and disposed in the hot water heat exchanging pipe, includes: a bypass pipe extending between a cold water pipe and a hot water pipe, for directly supplying cold water in the cold water pipe to the hot water pipe; a mixing valve mounted on one end of the bypass pipe; a heating water temperature sensor mounted on the heat water discharging outlet, for detecting the heating water temperature; a hot water temperature sensor mounted on the hot water supplying pipe, for detecting a hot water temperature; and a controller for receiving temperature values detected by the heating water temperature sensor and the hot water temperature sensor so as to control a degree of opening of the mixing valve. | 05-28-2009 |
20090120623 | Dual Pipe Heat Exchanger of Instantaneous Boiler for House Heating and Hot Water and Boiler - 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. | 05-14-2009 |