Hot water supply apparatus provided with pressure reducing valve

Abstract

A hot water supply apparatus of the present invention includes: a direct water inlet pipe into which direct water is introduced; a heat exchanger for heating direct water introduced through the direct water inlet pipe with combustion heat of a burner; a hot water supply pipe for discharging the hot water heated in the heat exchanger; a bypass pipe connected between the direct water inlet pipe and the hot water supply pipe so as to mix a part of the direct water introduced through the direct water inlet pipe with the hot water discharged through the hot water supply pipe; and a pressure reducing valve provided on the bypass pipe and configured to reduce the pressure of water passing through the inside of the bypass pipe to supply the water to the hot water supply pipe when hot water is supplied.

1 . A hot water supply apparatus provided with a pressure reducing valve, the apparatus comprising:
 a direct water inlet pipe into which direct water is introduced;   a heat exchanger configured to heat the direct water introduced through the direct water inlet pipe with combustion heat of a burner;   a hot water supply pipe configured to discharge the hot water heated in the heat exchanger;   a bypass pipe connected between the direct water inlet pipe and the hot water supply pipe so as to mix a part of the direct water introduced through the direct water inlet pipe with the hot water discharged through the hot water supply pipe; and   the pressure reducing valve provided on the bypass pipe and configured to reduce pressure of water passing through the inside of the bypass pipe to supply the water to the hot water supply pipe when hot water is supplied.   
     
     
         2 . The apparatus of  claim 1 , wherein the pressure reducing valve is formed such that, as flow rate of the direct water introduced to the direct water inlet pipe increases, the flow rate of the water passing through the inside of the direct water inlet pipe increases up to a set flow rate and then maintains at a constant flow rate. 
     
     
         3 . The apparatus of  claim 2 , wherein the pressure reducing valve includes a direct water flow path, through which water passes, formed therein and an elastic member which is deformed into a predetermined shape by supply pressure of the direct water provided to the direct water flow path such that the elastic member restricts the flow rate of the water passing through the direct water flow path and also maintains a constant flow rate.