Patent ID: 7946300

Claim:
A rinse water heating device for a dish washer, comprising: a water tank ( 11 ) for storing a rinse water; a rinse water tank ( 12 ) divided from the water tank ( 11 ) by a separation plate ( 13 ) positioned at a lower portion of the water tank ( 11 ); partitions ( 17 a , 17 b , 17 c ) installed in the rinse water tank ( 12 ) to form a rinse water guide path in a zigzag pattern; a heater ( 16 ) installed in the rinse water tank; an inlet pipe ( 14 ) installed to communicate an upper portion of the water tank ( 11 ) with a lower potion of the rinse water tank ( 12 ) through the separation plate ( 13 ) such that the rinse water in the upper portion of the water tank ( 11 ) flows into the rinse water tank ( 12 ) so as to be heated along the rinse water guide path by the heater ( 16 ) while a water pump ( 20 ) pumps the rinse water from the rinse water tank; and a check valve ( 15 ) installed through the separation plate ( 13 ) to allow a rinse water heated by the heater in the rinse water tank ( 12 ) to flow into the water tank ( 11 ) while the water pump ( 20 ) is not pumping the rinse water from the rinse water tank.