Exhaust duct detachable from outlet, water-heating device having the exhaust duct, and method for repairing the water-heating device
AssigneeKyungdong Navien Co., Ltd.
InventorsJeong Woo Kim, Sung Cheul Cho
Life of this patent
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Abstract
An exhaust duct includes an upper duct being open at opposite ends thereof and a lower duct being open at a tip end thereof. One end of the upper duct is connected, inside an enclosure of a water-heating device, to an exhaust adaptor disposed on the enclosure, and an opposite end of the upper duct communicates with the tip end of the lower duct. The upper duct is connected to the lower duct so as to be slidable along a reference direction in which the lower duct extends from the tip end of the lower duct, and the upper duct is configured to be separated from the exhaust adaptor by sliding along the reference direction.
Claims15
An exhaust duct comprising:
- an upper duct being open at opposite ends thereof, wherein one end of the upper duct is connected, inside an enclosure of a water-heating device, to an exhaust adaptor disposed on the enclosure;
- a lower duct being open at a tip end thereof, wherein an opposite end of the upper duct communicates with the tip end of the lower duct to form an overlap joint at an overlapping portion;
- and
- a coupling part connected to the upper duct and the lower duct, the coupling part being configured to fix the upper duct and the lower duct to prevent the upper duct from sliding relative to the lower duct,
- wherein the upper duct is connected to the lower duct so as to be slidable along a first direction in which the lower duct extends from the tip end of the lower duct, and the upper duct is configured to be separated from the exhaust adaptor by sliding along the first direction,
- wherein the coupling part is connected to the upper duct and the lower duct in the overlapping portion that is a region in which the upper duct and the lower duct overlap each other in a direction perpendicular to the first direction,
- wherein in the overlapping portion, the lower duct includes a coupling hole formed through part of an outer surface of the lower duct,
- wherein in the overlapping portion, the upper duct includes a coupling groove concavely formed in a radially inward direction, and
- wherein the coupling part includes a stopping portion configured to fix the upper duct and the lower duct by being inserted into the coupling groove through the coupling hole.
A water-heating device comprising:
- an enclosure;
- a heat exchanger received in the enclosure, the heat exchanger being configured to heat heating water using a generated heat generated by a combustion reaction of injected fuel and air, and discharge exhaust gas generated by the combustion reaction;
- an exhaust adaptor disposed in an outlet formed through the enclosure, the exhaust adaptor being configured to discharge the exhaust gas to the outside;
- and
- an exhaust duct including a lower duct, an upper duct and a coupling part, wherein the lower duct is connected to the heat exchanger and receives the exhaust gas, and the upper duct is connected to the exhaust adaptor at one end thereof and communicates with the lower duct at an opposite end thereof, such that the exhaust gas flows from the lower duct to the exhaust adaptor and is discharged to the outside,
- wherein the upper duct is connected to the lower duct to form an overlap joint at an overlapping portion so as to be slidable along a first direction in which the lower duct extends,
- wherein the coupling part is connected to the upper duct and the lower duct, the coupling part being configured to fix the upper duct and the lower duct to prevent the upper duct from sliding relative to the lower duct,
- wherein the coupling part is connected to the upper duct and the lower duct in the an overlapping portion that is a region in which the upper duct and the lower duct overlap each other in a direction perpendicular to the first direction,
- wherein in the overlapping portion, the lower duct includes a coupling hole formed through part of an outer surface of the lower duct,
- wherein in the overlapping portion, the upper duct includes a coupling groove concavely formed in a radially inward direction, and
- wherein the coupling part includes a stopping portion configured to fix the upper duct and the lower duct by being inserted into the coupling groove through the coupling hole.
A method for repairing a water-heating device that includes an enclosure having an outlet formed therein, an exhaust duct embedded in the enclosure and including a lower duct and an upper duct connected together to form an overlap joint at an overlapping portion, a heat exchanger connected to one end of the exhaust duct, and an exhaust adaptor disposed in the outlet and connected with an opposite end of the exhaust duct, the method comprising:
- removing one side surface of the enclosure;
- removing a coupling part configured to fix the upper duct and the lower duct by connecting the upper duct and the lower duct in the overlapping portion that is a region in which the upper duct and the lower duct form the overlap joint in a direction perpendicular to a first direction, such that the upper duct moves in the first direction relative to the lower duct;
- separating the upper duct from the exhaust adaptor by moving the upper duct along an inner surface of the lower duct;
- and
- separating the heat exchanger from the enclosure,
- wherein in the overlapping portion, the lower duct includes a coupling hole formed through part of an outer surface of the lower duct,
- wherein in the overlapping portion, the upper duct includes a coupling groove concavely formed in a radially inward direction, and
- wherein the coupling part includes a stopping portion configured to fix the upper duct and the lower duct by being inserted into the coupling groove through the coupling hole.
Dependencies are inferred from the claim text.