Gas distribution assembly and water-heating device including the same

Abstract

The present disclosure provides a gas distribution assembly and a water-heating device including the same. The gas distribution assembly for distributing a gas to a plurality of burners includes a manifold unit detachably assembled to an outer surface of a combustion chamber in which the plurality of burners are received, the manifold unit including a plurality of gas nozzles that eject the gas to gas inlets of the burners through an opening of the combustion chamber, and a gas supply unit that is assembled to the manifold unit so as to be separable and that supplies, to the manifold unit, the gas introduced into the gas supply unit. The manifold unit is separated from the combustion chamber and the gas supply unit as needed for replacement.

What is claimed is: 
     
         1 . A gas distribution assembly for distributing a gas to a plurality of burners, the gas distribution assembly comprising:
 a manifold unit configured to be detachably assembled to an outer surface of a combustion chamber in which the plurality of burners are received, the manifold unit including a plurality of gas nozzles configured to eject the gas to gas inlets of the burners through an opening of the combustion chamber; and   a gas supply unit detachably assembled to the manifold unit and configured to supply, to the manifold unit, the gas introduced into the gas supply unit,   wherein the manifold unit is configured to be separated from the combustion chamber and the gas supply unit as needed for replacement.   
     
     
         2 . The gas distribution assembly of  claim 1 , wherein the manifold unit is configured to be separated from the combustion chamber and the gas supply unit and is configured to be replaced with another manifold unit, when the gas nozzles need to be changed due to a change in the type of the gas supplied into the burners. 
     
     
         3 . The gas distribution assembly of  claim 1 , wherein the manifold unit includes:
 a manifold having the gas nozzles on a surface of the manifold that is detachably coupled to the combustion chamber and that faces in a first direction, wherein a direction from the manifold unit to the combustion chamber is referred to as the first direction, and a direction opposite to the first direction is referred to as a second direction; and   a front panel detachably assembled to a surface of the manifold that faces in the second direction and configured to cover the manifold.   
     
     
         4 . The gas distribution assembly of  claim 3 , wherein the manifold includes:
 a manifold body having a space sealed by the front panel;   partition walls configured to partition the space of the manifold body into a plurality of regions; and   a plurality of inflow holes formed in the manifold body so as to be disposed in the plurality of regions,   wherein the gas nozzles connect to the inflow holes, and   wherein the gas supply unit includes a plurality of supply holes located to correspond to the plurality of inflow holes so as to supply the gas to the plurality of regions.   
     
     
         5 . The gas distribution assembly of  claim 4 , wherein sizes of the plurality of inflow holes are determined based on sizes of the regions, and gas travel paths along which in the regions, the gas moves from the inflow holes toward the gas nozzles. 
     
     
         6 . The gas distribution assembly of  claim 4 , wherein one of the plurality of regions is referred to as a first region, and another one of the plurality of regions is referred to as a second region, and
 wherein the inflow hole located in the first region has a larger size than the inflow hole located in the second region, when the first region has a larger size than the second region.   
     
     
         7 . The gas distribution assembly of  claim 4 , wherein one of the plurality of regions is referred to as a first region, and another one of the plurality of regions is referred to as a second region, and
 wherein the inflow hole located in the second region has a larger size than the inflow hole located in the first region, when a distance from the gas nozzle located in the first region to the supply hole connecting to the first region is shorter than a distance from the gas nozzle located in the second region to the supply hole connecting to the second region.   
     
     
         8 . The gas distribution assembly of  claim 3 , wherein the manifold includes:
 a first fastening hole for assembly of the manifold and the combustion chamber;   a second fastening hole for assembly of the manifold and the gas supply unit; and   a third fastening hole for assembly of the manifold and the front panel.   
     
     
         9 . The gas distribution assembly of  claim 3 , wherein the manifold unit further includes:
 a first packing member configured to form a seal between the manifold and the front panel; and   a second packing member configured to form a seal between the manifold and the gas supply unit assembled to the surface of the manifold that faces in the first direction.   
     
     
         10 . The gas distribution assembly of  claim 4 , wherein the gas supply unit includes:
 a supply part including a main body having the plurality of supply holes formed therein and a gas supply pipe that is integrally formed with the main body and into which the gas is supplied; and   a valve part including a plurality of solenoid valves configured to open and close the plurality of supply holes.   
     
     
         11 . The gas distribution assembly of  claim 10 , wherein the main body includes:
 a dispersion space connected with an outlet of the gas supply pipe, the dispersion space being open in the second direction; and   a plurality of insertion spaces into which the plurality of solenoid valves are inserted, the insertion spaces being open in the first direction,   wherein the supply holes are formed in a surface of the insertion spaces that face in the second direction,   wherein the main body includes side-surface connecting holes formed through side surfaces perpendicular to the surface of the insertion spaces that face in the second direction, the side-surface connecting holes being configured to connect the insertion spaces and the dispersion space, and   wherein the side-surface connecting holes provided for the insertion spaces located adjacent to each other among the plurality of insertion spaces are formed to face each other.   
     
     
         12 . A water-heating device comprising:
 a case having a storage space formed therein, the case including a case cover configured to open and close one side of the case;   a combustion chamber received in the storage space, the combustion chamber having an interior space in which a combustion reaction occurs;   a plurality of burners received in the interior space of the combustion chamber; and   a gas distribution assembly provided between the case and the combustion chamber and configured to distribute a gas to the plurality of burners,   wherein a direction from the gas distribution assembly to the combustion chamber is referred to as a first direction, and a direction from the gas distribution assembly to the case cover is referred to as a second direction, the second direction being opposite to the first direction,   wherein the gas distribution assembly includes:   a manifold unit including a plurality of gas nozzles configured to eject the gas to gas inlets of the burners through an opening of the combustion chamber, wherein a surface of the manifold unit that faces in the first direction is detachably assembled to an outer surface of the combustion chamber; and   a gas supply unit connected to a supply valve unit and assembled to the manifold unit so as to be separable, the gas supply unit being configured to supply, to the manifold unit, the gas introduced from the supply valve unit, and   wherein the manifold unit is configured to be separated from the combustion chamber and the gas supply unit as needed for replacement.