公开(公告)号：WO2022231849A1

公开(公告)日：2022-11-03

申请号：PCT/US2022/024727

申请日：2022-04-14

Applicant: EMERSON CLIMATE TECHNOLOGIES, INC.

Inventor： OAKLEY, Michael D. ,  PEREVOZCHIKOV, Michael M. ,  SWALLOW, Matthew J.

IPC: F04D27/00 ,  F04D27/02

Abstract: A method for determining a mass flow of a dynamic compressor that does not include a mass flow sensor while the compressor is operating to compress a working fluid includes determining, by a processor, a current operating point of the compressor. If the current operating point is the same as one in a map of a plurality of predetermined operating points stored in a memory, the mass flow of that predetermined operating point is retrieved as the mass flow of the current operating point. Otherwise, the processor calculates the mass flow at the current operating point from the mass flows of a subset of the predetermined operating points nearest the current operating point. The dynamic compressor continues to operate to compress the working fluid based at least in part on the calculated mass flow rate for the current operating point.

公开(公告)号：WO2022051139A1

公开(公告)日：2022-03-10

申请号：PCT/US2021/047453

申请日：2021-08-25

Applicant: EMERSON CLIMATE TECHNOLOGIES, INC.

Inventor： OAKLEY, Michael D. ,  ZHEJI, Liu ,  PEREVOZCHIKOV, Michael M. ,  SWALLOW, Matthew J.

IPC: F04D17/10 ,  F04D27/00 ,  F04D27/02 ,  F04D29/056

Abstract: An HVAC system includes an unloading device, a centrifugal compressor, a gas foil bearing, a VFD and a controller. The controller is programmed to start the centrifugal compressor from a stopped condition by operating the unloading device to remove a load from the centrifugal compressor, accelerating the motor to a first speed above a liftoff speed of the gas foil bearing and below an operating speed of the centrifugal compressor, running the motor for a period of time, operating the unloading device to apply the load to the centrifugal compressor, and accelerating the motor to the operating speed.

公开(公告)号：WO2017161027A1

公开(公告)日：2017-09-21

申请号：PCT/US2017/022563

申请日：2017-03-15

Applicant: EMERSON CLIMATE TECHNOLOGIES, INC.

Inventor： TRUDEAU, Edward J. ,  OAKLEY, Michael D.

IPC: F24F11/00 ,  F25B49/02

Abstract: A system includes a compressor, an indoor fan, a thermostat, an indoor fan controller, and a compressor controller. The thermostat provides first and second signals based on indoor loading. The fan controller operates the fan in low speed mode and the compressor controller operates the compressor in low capacity mode when only the first signal is asserted. The compressor controller automatically switches the compressor to high capacity mode if only the first signal remains asserted past the low capacity mode runtime. The fan controller operates the fan in high speed mode when the second signal is asserted while the first signal is still asserted. The compressor controller continues to operate the compressor in high capacity mode and the fan controller operates the fan in low speed mode after the second signal is de-asserted, until the first signal is de-asserted, at which point the fan and compressor are turned off.

Abstract translation: 系统包括压缩机，室内风扇，恒温器，室内风扇控制器和压缩机控制器。 恒温器根据室内负载提供第一和第二信号。 风扇控制器在低速模式下运行风扇，当只有第一个信号有效时，压缩机控制器以低容量模式运行压缩机。 如果只有第一个信号保持断言超过低容量模式运行时间，则压缩机控制器会自动将压缩机切换到高容量模式。 当第一个信号仍然有效时，风扇控制器在第二个信号有效时以高速模式运行风扇。 压缩机控制器继续以高容量模式操作压缩机，并且风扇控制器在第二信号无效之后在低速模式下操作风扇，直到第一信号无效，此时风扇和压缩机被转动 关闭。

公开(公告)号：EP4208646A1

公开(公告)日：2023-07-12

申请号：EP21769308.4

申请日：2021-08-25

Applicant: Emerson Climate Technologies, Inc.

Inventor： OAKLEY, Michael D. ,  LIU, Zheji ,  PEREVOZCHIKOV, Michael M. ,  SWALLOW, Matthew J.

IPC: F04D17/10 ,  F04D27/00 ,  F04D27/02 ,  F04D29/056