| KYUNG-DONG NAVIEN CO., LTD. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110017428 | PLANE TYPE HEAT EXCHANGER - The present invention relates to a plane type heat exchanger that has a simple structure and can be easily manufactured by substituting a rectangular plane type for a spiral cylindrical type of the structure of a heat exchange pipe according to the related art which is used for a heat exchanger using combustion gas that is heated by a burner and makes laminar flow. According to the present invention, the plane type heat exchanger having heat exchange pipes, through which heating water flows, and makes heat exchange by contacting with laminar-flow combustion gas, the plane type heat exchanger, includes: a plurality of heat exchange pipes that have a rectangular cross section with a larger width of a side, which contacts with the combustion gas, than the height, and are arranged at regular intervals in parallel with each other; inner plates where both ends of the heat exchange pipes are inserted to be fixed at regular intervals; and outer plates that are communicated with the heat exchange pipes through the inner plates and form spaces covering the outer surfaces of the inner plates. | 01-27-2011 |
| 20100307727 | HEAT EXCHANGER AND MANUFACTURING METHOD OF HEAT EXCHANGING PIPE COMPOSING IT - 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. | 12-09-2010 |
