Hot Water Generator

Abstract

Disclosed is a hot water generator comprising: a housing having a water inlet, a water outlet, and an inner space; and a heater disposed in the inner space of the housing, wherein the housing is provided with a helical flow formation unit which enables water flowing into the inner space to helically spin and flow along an outer surface of the heater.

1 . A hot water generator, comprising:
 a housing having a water inlet, a water outlet, and an internal space; and   a heater disposed in the internal space of the housing,   wherein the housing is provided with a helical flow formation unit which enables water flowing into the internal space to helically spin and flow along an external surface of the heater.   
     
     
         2 . The hot water generator of  claim 1 , wherein the housing comprises:
 a body having first and second tubular portions having a circular tubular shape into which the heater is insertedly disposed;   a cap member coupled to one end of the body; and   a heater installation member coupled to the other end of the body and having the heater installed thereon.   
     
     
         3 . The hot water generator of  claim 2 , wherein one end of the body is provided with a flow path portion for guiding a flow path of water and in the flow path portion, an interval of the flow path portion, connected to the first tubular portion is greater than an interval of the flow path portion, connected to the second tubular portion. 
     
     
         4 . The hot water generator of  claim 3 , wherein a ratio of the interval of the flow path portion, connected to the first tubular portion and the interval of the flow path portion, connected to the second tubular portion is 2:1. 
     
     
         5 . The hot water generator of  claim 1 , wherein the heater is provided with first and second heaters, and has a bar shape having a circular cross-section, and
 the housing has first and second tubular portions having a circular tubular shape into which the first and second heaters are insertedly disposed.   
     
     
         6 . The hot water generator of  claim 5 , wherein the helical flow formation unit is composed of a protrusion or a groove formed on internal surfaces of the first and second tubular portions. 
     
     
         7 . The hot water generator of  claim 6 , wherein a pitch of the helical flow formation unit formed on the internal surface of the first tubular portion is greater than a pitch of the helical flow formation unit formed on the internal surface of the second tubular portion. 
     
     
         8 . The hot water generator of  claim 2 , wherein the water inlet is disposed on the other end of the first tubular portion and the water outlet is disposed on the other end of the second tubular portion.