Hot-water boiler for hot-water heating mat

Abstract

Disclosed herein is a hot-water boiler for a hot-water heating mat. The boiler is configured such that a high-temperature space and a low-temperature space, respectively, located on left and right sides of a recess formed in a lower portion of a central region of a hot-water heating tank, a discharge space connecting upper portions of the high-temperature space and the low-temperature space with each other, and a hot-water heating pipe connecting lower portions of the high-temperature space and the low-temperature space with each other are arranged to form a ‘ ’-shaped circulation path. The hot-water heating pipe is inclined and an electric heater is provided on an outer surface of the hot-water heating pipe.

What is claimed is: 
     
         1 . A hot-water boiler for a hot-water heating mat, comprising:
 a hot-water heating tank having an electric heater to heat water therein, a hot-water outlet, port provided on an inner portion of an upper surface thereof, and a hot-water recovery port provided at a position of a lower portion thereof and connected to the hot-water heating mat, with a water-level sensor provided therein;   a hot-water storage tank connected with the hot-water heating tank, and having a water replenishment hole provided at a position on an outer portion thereof to be open or closed by a stopper, a hot-water inlet port provided at another position on the outer portion thereof to be connected with the hot-water outlet port of the hot-water heating tank, and a hot-water supply port connected with the hot-water heating mat, with a water-shortage detection sensor provided therein; and   a check valve for discharge, the check valve being provided in the hot-water inlet port of the hot-water storage tank,   wherein the hot-water heating tank is configured such that a high-temperature space and a low-temperature space, respectively, located on left and right sides of a recess formed in a lower portion of a central region of the hot-water heating tank, a discharge space connecting upper portions of the high-temperature space and the low-temperature space with each other, and a hot-water heating pipe connecting lower portions of the high-temperature space and. the low-temperature space with each other are arranged to form a ‘ ’-shaped circulation path, wherein   the hot-water heating pipe is inclined, and   the electric heater is provided on an outer surface of the hot-water heating pipe to instantaneously vaporize a small, amount of water in the hot-water heating pipe.   
     
     
         2 . The hot-water boiler as set forth in  claim 1 , wherein a check valve for recovery is provided, in the hot-water recovery port of the hot-water heating tank. 
     
     
         3 . The hot-water boiler as set forth in  claim 1 , wherein a plurality of heat radiation fins is formed on an inner circumference of the hot-water heating pipe provided in the hot-water heating tank to extend in a longitudinal direction. 
     
     
         4 . The hot-water boiler as set forth in  claim 1 , wherein a silencing cover having on an end thereof a bubble trap step is provided on an end of the hot-water heating pipe provided in the hot-water heating tank. 
     
     
         5 . The hot-water boiler as set forth in  claim 1 , wherein a bubble guide wail is provided on an inner surface in the upper portion of the high-temperature space defined in the hot-water heating tank to guide bubbles generated in the hot-water heating pipe to an upper portion of the discharge space. 
     
     
         6 . The hot-water boiler as set forth in  claim 1 , wherein an air vent hole is formed, in the hot-water outlet port provided in the discharge space of the hot-water heating tank to communicate with the hot-water inlet port of the hot-water storage tank. 
     
     
         7 . The hot-water boiler as set forth in  claim 1 , wherein an air discharge hole is formed in the stopper for opening or closing the water replenishment hole of the hot-water storage tank, and an air discharge tube is provided in the hot-water storage tank to be connected with the air discharge hole of the stopper. 
     
     
         8 . The hot-water boiler as set forth in  claim 1 , wherein an auxiliary space is formed in an upper portion, of the hot-water storage tank to be at a higher position than the water replenishment hole.