Whirlpool bath (1) with a pipe washing function according to the present invention, the bathtub body 10 is formed a bathtub 11； Inlet 20； Spray nozzle 30； Pump 40； A pump between the injection nozzle 30 and the pump 40 to supply water to the injection nozzle 30 and the inlet port 20 at a high position and the pump 40 at a low position ( 40) a circulation pipe 50 including a suction pipe 52 which is piped to be inclined low and supplies water from the bathtub 11 to the pump 40 through the suction port 20； Drain 60； A washing water supply pipe 70 which is piped between the water supply source 2 for supplying clean water and the suction pipe 52 to supply washing water from the water supply source 2 to the suction pipe 52, and is provided with an openable and closeable water supply valve 71； And a control unit 80 that controls the operation of the pump 40 and the opening and closing of the water supply valve 71. Including, when executing the washing mode to the control unit 80, the water supply valve 71 is opened for a certain time and the pump 40 is operated, the washing water supplied from the washing water supply pipe 70, the suction pipe 52, While flowing through the pump 40, the injection pipe 51, the injection nozzle 30, the bathtub 11 and the drain port 60, the inside of the circulation pipe 50 is washed.본 발명에 따른 배관세척기능을 구비한 월풀욕조(1)는, 욕조(11)가 형성된 욕조본체(10)； 흡입구(20)； 분사노즐(30)； 펌프(40)； 분사노즐(30)과 펌프(40) 사이에 배관되어 분사노즐(30)에 물을 공급하는 분사관(51), 및 높은 위치의 흡입구(20)와 낮은 위치의 펌프(40) 사이에 펌프(40) 쪽이 낮게 경사지게 배관되고 욕조(11)의 물을 흡입구(20)를 통해 펌프(40)로 공급하는 흡입관(52)을 포함하는 순환관(50)； 배수구(60)； 깨끗한 물을 공급하는 급수원(2)과 흡입관(52) 사이에 배관되어 급수원(2)으로부터 흡입관(52)에 세척수를 공급하며, 개폐 가능한 급수밸브(71)가 설치된 세척수공급관(70)； 및 펌프(40)의 가동과 급수밸브(71)의 개폐를 제어하는 제어부(80)； 를 포함하고, 제어부(80)에 세척모드를 실행하면, 급수밸브(71)가 일정시간동안 개방되고 펌프(40)가 가동됨으로써, 세척수공급관(70)로부터 공급된 세척수가, 흡입관(52), 펌프(40), 분사관(51), 분사노즐(30), 욕조(11) 및 배수구(60)를 통해 흘러가면서, 순환관(50)의 내부를 세척한다.
