Hot water supply device

Abstract

A hot water supply apparatus includes a heat exchanger that heats water for hot water supply, a pressure controller provided in a subsequent stage of the heat exchanger, and a trap that promotes deposition of scale. The pressure controller pressurizes the water for hot water supply. The trap is provided in a subsequent stage of the pressure controller.

1 . A hot water supply apparatus comprising:
 a heat exchanger configured to heat water for hot water supply;   a pressure controller provided in a subsequent stage of the heat exchanger, the pressure controller being configured to pressurize the water for hot water supply; and   a trap configured to promote deposition of scale, the trap being provided in a subsequent stage of the pressure controller.   
     
     
         2 . The hot water supply apparatus of  claim 1 , wherein
 an inner diameter of the trap is larger than an inner diameter of a water pipe before and after the trap.   
     
     
         3 . The hot water supply apparatus of  claim 1 , wherein
 a surface roughness of an inner peripheral surface of the trap is larger than a surface roughness of an inner peripheral surface of a water pipe before and after the trap.   
     
     
         4 . The hot water supply apparatus of  claim 2 , wherein
 a surface roughness of an inner peripheral surface of the trap is larger than a surface roughness of an inner peripheral surface of a water pipe before and after the trap.   
     
     
         5 . The hot water supply apparatus of  claim 1 , wherein
 the trap is configured to be able to supply water from outside and discharge water to outside.   
     
     
         6 . The hot water supply apparatus of  claim 2 , wherein
 the trap is configured to be able to supply water from outside and discharge water to outside.   
     
     
         7 . The hot water supply apparatus of  claim 3 , wherein
 the trap is configured to be able to supply water from outside and discharge water to outside.   
     
     
         8 . The hot water supply apparatus of  claim 1 , wherein
 the trap is configured to be detachable and replaceable.   
     
     
         9 . The hot water supply apparatus of  claim 2 , wherein
 the trap is configured to be detachable and replaceable.   
     
     
         10 . The hot water supply apparatus of  claim 3 , wherein
 the trap is configured to be detachable and replaceable.   
     
     
         11 . The hot water supply apparatus of  claim 5 , wherein
 the trap is configured to be detachable and replaceable.   
     
     
         12 . The hot water supply apparatus of  claim 1 , wherein
 at least part of the pressure controller is integral with the trap.   
     
     
         13 . The hot water supply apparatus of  claim 1 , further comprising:
 a tank configured to store water for hot water supply in a subsequent stage of the trap.   
     
     
         14 . The hot water supply apparatus of  claim 1 , further comprising:
 a pressurization mechanism configured to pressurize the water for hot water supply over a water circuit entirely.   
     
     
         15 . The hot water supply apparatus of  claim 1 , further comprising:
 an eddy current heater provided between the heat exchanger and the pressure controller, the eddy current heater being configured to heat the water for hot water supply.   
     
     
         16 . The hot water supply apparatus of  claim 15 , wherein
 the heat exchanger is configured to heat the water for hot water supply to a temperature within a temperature range in which scale is not precipitated, and   the eddy current heater is configured to heat the water for hot water supply to a temperature higher than the temperature range.   
     
     
         17 . The hot water supply apparatus of  claim 15 , wherein
 a material of a portion of the water pipe heated by the eddy current heater is stainless steel.   
     
     
         18 . The hot water supply apparatus of  claim 1 , wherein
 the heat source device of the heat exchanger is a heat pump.