Time-sharing phase change cooling device and method for variable gas phase space

The invention provides a variable gas phase space time-sharing phase change cooling device and method.The variable gas phase space time-sharing phase change cooling device comprises a shell, a base, a heat exchanger and a pressure sensor, the shell forms an immersion chamber, the immersion chamber is filled with phase change liquid, and the shell is provided with a first liquid inlet and a first liquid outlet which communicate with the immersion chamber; the first liquid inlet and the first liquid outlet are used for being connected with a phase change liquid conveying system, the flow of the first liquid inlet and/or the first liquid outlet is adjustable, the base is located at the bottom of the immersion chamber and used for installing a heating device, the heat exchanger comprises a liquid cooling plate and a liquid guide pipe, the liquid cooling plate is installed on the base and comprises a heat conduction face, and the heat conduction face is used for making contact with the heating device. The liquid c