Abstract: The present invention relates to the technical field of cleaning, in particular to a cleaning appliance, which comprises a cleaning appliance body. The cleaning appliance body includes a housing, two brush rollers disposed at the bottom of the housing, a drive mechanism disposed in the housing and configured to drive the two brush rollers to rotate, and a dust collector disposed on the housing; a suction port of the dust collector is disposed between the two brush rollers; and both rotation directions of the two brush rollers direct towards the suction port. The cleaning appliance provided by the present invention adopts a combined structure of the two brush rollers and the dust collector; both rotation directions of the two brush rollers direct towards the suction port; dust, particulate waste or flocks are gathered; the waste is sucked into the dust collector through the suction port between the two brush rollers.

Abstract: An easily-operated vacuum storage container comprises box body and a vacuum control device that is mounted on the box body in a removable manner. The vacuum control device comprises a vacuum pump for evacuating the box body that is provided with a vacuum relief valve, and a relief valve control mechanism. When the vacuum control device is mounted in the box body, the relief valve control mechanism can open or close the vacuum relief valve. When the vacuum control device is not mounted in the box body, users can directly control the vacuum relief valve to release the vacuum inside the box body. When the vacuum control device is mounted and users need to release the vacuum in the box body, they need not to take up the vacuum control device, but directly operate the relief valve control mechanism on the vacuum control device to release the vacuum.

Abstract: The present invention relates to the technical field of heating equipment, and particularly to a steam generator, comprising a shell and a heater fixed inside the shell, a gasification chamber for generating steam being formed between the heater and the shell, the gasification chamber being provided with a water inlet and a steam outlet. The gasification chamber comprises stepped or labyrinthic steam passages. As the gasification chamber inside the steam generator provided by the present invention comprises stepped or labyrinthic steam passages, heat both inside and outside the heating element is fully utilized, the steam passage is lengthened, and both the pressure and temperature are increased; consequently, high-temperature steam may be provided. Moreover, the time for ejecting steam is greatly shortened just several seconds from feeding water to ejecting steam, with high heat utilization efficiency. Moreover, the steam generator is small in size.