Patent ID: 11603677

Abstract:
A SPA bathtub and an operating unit therefore are provided. The operating unit includes a water circulation system including a diaphragm self-priming pump, a peristaltic pump, a water circulation pipeline, and a fluid switch assembly. The diaphragm self-priming pump operates before the peristaltic pump operates normally and stops operating after the peristaltic pump operates normally. During operation of the diaphragm self-priming pump, the fluid switch assembly is in a first operation state, so that water from the interior volume portion sequentially flows through the peristaltic pump, the diaphragm self-priming pump, the fluid switch assembly, and the water circulation pipeline and finally returns to the interior volume portion. During operation of the peristaltic pump, the fluid switch assembly is in a second operation state, so that the water sequentially flows through the peristaltic pump, the fluid switch assembly, and the water circulation pipeline and finally returns to the interior volume portion.