JP2005160745A5 - - Google Patents

Claims (5)

A detecting means for detecting a characteristic value within a predetermined time after start of operation of the circulating pump for circulating the hot water in the bathtub, the time of a preset reference waveform detected value at each time which is constantly detected by the detection means And a control means for determining whether or not the circulation pump is abnormal by comparing with a characteristic value in the system, and stopping the operation of the circulation pump when the detected value is determined to be abnormal. apparatus.   2. The jet bath safety device according to claim 1, wherein the characteristic value is one of a current value and a rotation speed of the circulation pump.   3. The jet bath safety device according to claim 1, wherein the reference waveform is a waveform within a predetermined time of the circulation pump that has been operated normally last time, which is stored in the control means. 4.   3. The jet bath safety device according to claim 1, wherein the reference waveform is manually stored in advance in a storage unit of a control unit. 4. The control means compares the characteristic value of the circulating pump after a predetermined time from the start of operation detected by the detecting means with a predetermined reference value, and continuously determines whether or not there is an abnormality in the circulating pump. The jet bath safety device according to any one of claims 1 to 4.