Abstract: An underwater thruster with improved guide stability and increased kinetic energy utilization rate comprises a power part and a propeller, wherein the power part is provided upstream of the propeller for driving the propeller to rotate. The underwater thruster further comprises a diversion part which is provided between the water inlet part and the water outlet part and is connected with the water inlet part and the water outlet part respectively in a plug-in manner, to uniformly disperse water entering the water inlet part to blades of the propeller.

Abstract: Provided herein is a heater and a heating pool. The heater comprises a heating core that includes a first surface and a second surface arranged on the opposite side of the heating core. A first insulating housing is placed on the first surface and forms a first heat insulating chamber together with the first surface. The second insulating housing is placed on the second surface and forms a second heat insulating chamber together with the second surface, wherein the first heat insulating chamber and the second heat insulating chamber communicate with each other. The heater of the utility model has good insulation performance and can prevent the occurrence of electrical leakage, so that the safety performance of the heater is improved.

Abstract: A paddle board, comprising a paddle board body (10) comprising an upper surface (11) and a lower surface (11a), wherein the lower surface of the paddle board body is a surface which comes into contact with the water, the upper surface of the paddle board body comprises a first region (11) and a second region (12). In the direction from the upper surface to the lower surface, the second region is lower than the first region, wherein the first region can be for the user to stand and the second region can be for user to sit. By means of the paddle board, the user can paddle when standing on the paddle board, and can also paddle when sitting on the paddle board, such that the user experience is good.

Abstract: Disclosed in the present invention is a water circulation pipeline, comprising: an interface pipeline, the interface pipeline comprising a first pipeline and a second pipeline, one of the first pipeline and the second pipeline being provided with water inlets, and the other being provided with a water outlet, the water inlets and the water outlet being used for being connected to a water pool body, the second pipeline being nested in the first pipeline; and a pipeline body having a third pipeline, a first port of the third pipeline being in communication with the first pipeline, and a second port of the third pipeline being in communication with the second pipeline. The present invention can reduce the volumes of the water circulation pipeline and a control box. Also disclosed in the present invention are a control box and a massage water pool.

Abstract: A valve assembly includes: a valve body, having an inner cavity; a first pipeline arranged on the valve body, having one end that communicates with the inner cavity and another end that is configured to be connected to an air pump; a second pipeline arranged on the valve body, having one end that communicates with the inner cavity and another end that is configured to be connected to a bubble spraying interface of a pool; and a third pipeline arranged on the valve body, having one end that communicates with the inner cavity and another end that is configured to be connected to an inflating interface of the pool. When the air pump is in an activated state, the second pipeline is in a communicating state and supplies air to the spray bubble interface, and the third pipeline is in a communicating state and supplies air to the inflating interface.

Abstract: Disclosed is a control box. The control box is internally provided with a first chamber, and the first chamber is used for accommodating a control component. The control box is also internally provided with an air supply system for supplying air to a water pool body. The air supply system comprises an air suction part having a housing, the housing is provided with an air inlet and an air outlet, and the air inlet is communicated with the first chamber; the air suction part further comprises an air pump provided in the housing, and when the air pump is started, air in the first chamber can be suctioned into the housing by means of the air inlet.