公开(公告)号：US20180363954A1

公开(公告)日：2018-12-20

申请号：US16060695

申请日：2016-09-12

申请人： Gree Electric Appliances, Inc. of Zhuhai

发明人： Huan ZHAO ,  Feng TAN ,  Pengfei LI ,  Youxuan LIANG

IPC分类号： F25B1/10 ,  F24F11/83 ,  F24F11/89 ,  F25B41/04

CPC分类号： F25B1/10 ,  F24F11/83 ,  F24F11/89 ,  F25B41/04 ,  F25B49/02 ,  F25B2400/077 ,  F25B2400/23 ,  F25B2500/02 ,  F25B2500/19 ,  F25B2500/31 ,  F25B2600/2509 ,  F25B2700/1931 ,  F25B2700/21152

摘要： Provided herein is a compression system including a compressor, an intermediate air compensation pipeline, and an air compensation valve disposed on the intermediate air compensation pipeline. According to a flow direction of a refrigerant, a first pressure detection device and a first temperature detection device are disposed at the inlet end of the air compensation valve on the intermediate air compensation pipeline; a second temperature detection device is disposed at the outlet end of the air compensation valve. The system also includes a second pressure detection device and a third temperature detection device disposed on an exhaust pipeline of the compressor.

公开(公告)号：US20220243107A1

公开(公告)日：2022-08-04

申请号：US17613839

申请日：2020-06-18

申请人： Gree Electric Appliances, Inc. of Zhuhai

发明人： Youlin ZHANG ,  Yancui YU ,  Huan ZHAO ,  Peiyu LEI ,  Youxuan LIANG ,  Yujie HUANG

IPC分类号： C09K5/04 ,  F25B1/04

摘要： Provided is a heat transfer composition, which is characterized in that the heat transfer composition comprises the following three components: 1,1,1,2-tetrafluoroethane (R134a) with a mass ratio of 28%-46%, 2,3,3,3-tetrafluoropropene (R1234yf) with a mass ratio of 33%-71%, and trans 1,3,3,3-tetrafluoropropene (R1234ze(E)) with a mass ratio of I %-23%. The described heat transfer composition which replaces R134a not only has the environmentally friendly features of having low GWP and zero ODP, but also has excellent thermal performance. When applied in a centrifugal chiller, the volumetric refrigeration capacity and energy efficiency are equivalent to those of a centrifugal unit using an R134a refrigerant, and the slip in temperature is small; thus, the present application may become a heat transfer composition to replace R134a.

公开(公告)号：US20180356136A1

公开(公告)日：2018-12-13

申请号：US15775476

申请日：2016-05-05

申请人： GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

发明人： Huan ZHAO ,  Jun SHEN ,  Feng TAN ,  Youxuan LIANG ,  Pengfei LI

IPC分类号： F25B41/06 ,  F25B13/00

摘要： Provided are a gas-replenishing and enthalpy-increasing control method, device and apparatus for a two-stage compressor. The method includes: when a gas-replenishing electronic expansion valve needs to be opened, gradually increasing, by a controller, an opening degree of the gas-replenishing electronic expansion valve in a time sequence; after the gas-replenishing electronic expansion valve is opened, acquiring a detected gas-replenishing superheat degree of a two-stage compressor; and adjusting, based on the gas-replenishing superheat degree of the two-stage compressor, the opening degree of the gas-replenishing electronic expansion valve, wherein the gas-replenishing electronic expansion valve is disposed between a medium-pressure liquid storage tank and the two-stage compressor, and when the opening degree of the gas-replenishing electronic expansion valve is not zero, a gaseous refrigerant in the medium-pressure liquid storage tank replenishes gas and increases enthalpy for the two-stage compressor,.