US 2026/0276264 A1Published application

Gas-floating centrifugal refrigerant compressor

AssigneeXeca Turbo (Chongqing) Technology Co., Ltd

InventorsJiawei ZHAO, Ti YU, Qin TANG

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Abstract

A motor housing and a gas outlet mechanism together form a main structure of a gas-floating centrifugal refrigerant compressor. The compressor supplies power to a motor stator through an electronic control system, so as to drive a rotor to rotate. The rotor drives a first impeller and a second impeller to rotate. The first impeller and the second impeller perform work on a refrigerant gas entering a ventilation cavity. Due to a pressure difference between the impeller outlet and the installation cavity, a portion of gas leaks through a mounting gap of the first impeller and the second impeller. After passing through a sealing mechanism, the gas enters between a gas-floating bearing assembly and the rotor. Therefore, a gas film layer is formed when the rotor rotates, thereby achieving a function of a gas-floating bearing.

Claims17

Dependent claims

A gas-floating centrifugal refrigerant compressor, comprising:

a motor housing, comprising a mounting cavity;
a motor stator, disposed in the mounting cavity;
a rotor, disposed in the mounting cavity, wherein the rotor and the motor stator are matingly mounted with each other, a first impeller and a second impeller are respectively provided at two ends of the rotor, and the first impeller and the second impeller at least partially extend out of the motor housing;
a gas-floating bearing assembly, disposed in the mounting cavity, with a gap between the gas-floating bearing assembly and the rotor, the gas-floating bearing assembly being configured to support rotation of the rotor through a gas film formed by a refrigerant gas;
a sealing mechanism, configured to seal the mounting cavity with a set sealing strength;
and
a gas outlet mechanism, having a ventilation cavity, the first impeller and the second impeller being located in the ventilation cavity, and the gas outlet mechanism being configured to form, within the ventilation cavity, a gas pressure higher than a gas pressure within the mounting cavity.

4 more elements

Dependencies are inferred from the claim text.