Abstract: A hot-plate-welded water pipe includes a first water inlet pipe, a second water inlet pipe, a lateral pipe, all of a hollow cylinder shape, and a cover plate. The lateral pipe is connected to and in communication with the first water inlet pipe and second water inlet pipe, an opening is provided on a central portion of the lateral tube, and the opening protrudes from a surface of the lateral pipe. The cover plate is connected onto the opening, and the cover plate is welded onto the opening through hot-plate-welding. The first water inlet pipe, the second water inlet pipe, and the lateral pipe formed integrally into a body through injection molding.

Abstract: A mini water route structure comprises: a water route piece and a plurality of water route switches. The water route piece includes: a water input end, connected to an outside water route member; a water output end, connected to the outside water route member; a water passage channel, with its two ends connected respectively to the water input end and the water output end; and a switch installation portion, formed integrally into a body, and is connected to the water passage channel along a direction of a water route. The plurality of water route switches is disposed on the switch installation portion in sequence along the direction of the water route, and are connected in series using their internal water routes. By using mini water route structure, more water route switching can be achieved on a household water utility device.

Abstract: A mini vertical-and-horizontal engine structure, comprising: a rear water channel, connected to an outside pipeline; a first engine, disposed vertically in the rear water channel to switch between water routes; a second engine, disposed horizontally in the rear water channel; a front water channel, connected fixedly to one end of the rear water channel; a push button, disposed on the front water channel, to control the first engine and the second engine; and a connection rod, with its one end connected fixedly to the push button, and with its other end connected fixedly to the first engine and the second engine. The engine structure is novel in design, compact in structure, a plurality of engines are arranged to dispose vertically or horizontally to reduce space it occupies. A push button is used to control the engines to switch between a plurality of water channels.