Abstract: The present invention discloses an air-bearing and a centrifugal refrigeration compressor, wherein the air-bearing comprises two sets of first notch grooves, which are symmetrically arranged at two ends of a rotor, each set of first notch groove includes several radial grooves distributed circumferentially around the rotor, and the radial grooves are curved to form an air film to support the rotor when it rotates. By applying the air-bearing in centrifugal refrigeration compressors, on the one hand, a smaller size rotor can be used in the centrifugal refrigeration compressors, thereby achieve the requirements of smaller size and higher speed of the centrifugal refrigeration compressors, and on the other hand, it is able to reduce the air film gap, reduce the co-frequency and sub-synchronization amplitudes of the rotor, reduce the risk of the impeller rubbing against the shell and meet the demand for a smaller tip clearances.

Abstract: The present invention discloses an air-floating centrifugal compressor, including a motor, an impeller, an air inlet, an outlet port, and a connection pipe. The motor includes a housing and a rotor, a first chamber and a second chamber are arranged at two ends inside the housing, and an air-floating radial bearing is arranged on the rotor. The impeller is fixed to the end of the rotor and is located in the first chamber and/or the second chamber. The air inlet of the first chamber is connected to the air inlet, and the air outlet is connected to one end of the connecting pipe, the air outlet of the second chamber is connected to the outlet port, and the air inlet is connected to the other end of the connecting pipe.

Abstract: An inlet guide vane mechanism comprises: a flow guide body having a front end section, a middle section and a rear end section, wherein the front end section, the middle section and the rear end section respectively have streamline contours in symmetry about the impeller axis and are transitionally connected by smooth curved surfaces, the flow guide body comprises an air inlet pipe arranged along the impeller axis, one end of the air inlet pipe being fixed at the front end section of the flow guide body, and the other end thereof being fixed at the rear end section of the flow guide body; a support structure for fixing the flow guide body at the air inlet end of the centrifugal compressor; and a plurality of inlet guide vanes rotatably fixed in the circumferential direction of the middle section of the flow guide body through a rotating shaft thereof, respectively.

Abstract: A piping assembly and a refrigeration system. The piping assembly includes: an inlet portion extending along an inlet axis; an outlet portion extending along an outlet axis, wherein a predetermined angle is formed between the inlet axis and the outlet axis; a transition portion being attached between the inlet portion and the outlet portion and defining a transition axis; a cavity extending from the inlet portion to the outlet portion through the transition portion; and a first straightening portion including a plurality of deflector plates attached to an inner wall of the cavity, wherein the first straightening portion includes at least a first deflector plate and a second deflector plate connected at an angle, and the first deflector plate and the second deflector plate are configured to extend in parallel with a part of the outlet axis and a part of the transition axis.

Abstract: An energy storage thermal management system, comprising a refrigeration module and a cooling module, wherein the refrigeration module comprises an air-floating centrifugal compressor and a condenser. Wherein the air-floating centrifugal compressor is used for compressing a refrigerant to form a refrigerant in a first state, and an inlet of the condenser is connected to an exhaust port of the air-floating centrifugal compressor to cool down the refrigerant in the first state to form a refrigerant in a second state, and the temperature of the second state is lower than that of the first state but the pressure is the same. The cooling module is used for heat dissipation of the target equipment, and its inlet is connected with the outlet of the condenser, and its outlet is connected with the air inlet of the air-floating centrifugal compressor, and the inlet is arranged with a throttling element.

Abstract: An inlet guide vane mechanism comprises: a flow guide body having a front end section, a middle section and a rear end section, wherein the front end section, the middle section and the rear end section respectively have streamline contours in symmetry about the impeller axis and are transitionally connected by smooth curved surfaces, the flow guide body comprises an air inlet pipe arranged along the impeller axis, one end of the air inlet pipe being fixed at the front end section of the flow guide body, and the other end thereof being fixed at the rear end section of the flow guide body; a support structure for fixing the flow guide body at the air inlet end of the centrifugal compressor; and a plurality of inlet guide vanes rotatably fixed in the circumferential direction of the middle section of the flow guide body through a rotating shaft thereof, respectively.

Abstract: A piping assembly and a refrigeration system. The piping assembly includes: an inlet portion extending along an inlet axis; an outlet portion extending along an outlet axis, wherein a predetermined angle is formed between the inlet axis and the outlet axis; a transition portion being attached between the inlet portion and the outlet portion and defining a transition axis; a cavity extending from the inlet portion to the outlet portion through the transition portion; and a first straightening portion including a plurality of deflector plates attached to an inner wall of the cavity, wherein the first straightening portion includes at least a first deflector plate and a second deflector plate connected at an angle, and the first deflector plate and the second deflector plate are configured to extend in parallel with a part of the outlet axis and a part of the transition axis.