Carrier Corporation

Shanghai Air-paq Composite Material Co., Ltd.

Shanghai Pujiang Cable Co., Ltd.

Zhejiang Pujiang Cable Co., Ltd.

Fei Xie

Yong Wang

Lei Yu

Guangyu Shen

Jiaying Zhang

Zhiwei Wu

Kai Deng

Yifeng Wang

YuHui Kuang

Linhui Chen

Lihui Yang

Tingcan Mi

Kangshan Xie

Liang Xiang

Weijie Shao

Guoqiang Luo

Hailiang Zhang

Jinlin Zhu

Qinghua Gu

An economizer and an air conditioning system. The economizer includes a housing with a refrigerant inlet for connecting to a first heat exchanger, a refrigerant outlet for connecting to a second heat exchanger, and a suction port for connecting to an intermediate stage of a compressor provided thereon; and a choke portion configured to protrude inwardly from an inner wall of the housing and arranged close to the suction port, such that refrigerant flowing to the suction port is at least partially obstructed. According to the technical solutions of the present application, the refrigerant flowing to the suction port can be at least partially obstructed. When the liquid droplets carried by the refrigerant are obstructed by the choke portion, the liquid droplets are adsorbed on the wall surface to form a liquid film, and the movement of the liquid film is obstructed by the choke portion.

Economizer and air conditioning system

A centrifugal compressor and a refrigerating device. The centrifugal compressor includes: a shell, which has a fluid inlet and a fluid outlet; a motor assembly including a stator and a rotor, the rotor including a vertically arranged rotor shaft; a centrifugal compression mechanism, an impeller of which is connected with the rotor shaft so as to be driven by the motor assembly, wherein the centrifugal compression mechanism is arranged downstream of the fluid inlet to receive fluid, compress and pressurize the fluid, and output the pressurized fluid in a direction away from the motor assembly; and a guide member, which receives the pressurized fluid from the centrifugal compression mechanism, and which defines a flow passage alone or together with a part of the shell, wherein the flow passage is configured such that the pressurized fluid from the centrifugal compression mechanism passes through and cools the motor assembly.

Centrifugal compressor having a motor cooling passage

A combined heat exchanger, a heat exchange system, and an optimization method thereof are provided. The heat exchange system includes: an enhanced vapor injection compressor, a condenser, an expansion valve and an evaporator, which are located in a main circuit; wherein the heat exchange system further includes a first branch branched from the main circuit to an vapor injection port of the compressor at a branch point P downstream of the condenser, and a first heat exchange unit and a second heat exchange unit are further provided in the main circuit between the branch point P and the expansion valve; and wherein a refrigerant leaving the condenser is divided at the branch point P into a first portion passing through the first heat exchange unit and the second heat exchange unit from the main circuit, and a second portion passing through the first branch to the vapor injection port.

Combined heat exchanger, heat exchanging system and the optimization method thereof

An air-filling packaging apparatus includes at least an air cushion body formed by at least two layers of air chamber films. The air cushion body includes multiple air-storing units. The air-storing units are heat-sealed to form a series of 2D heat-sealing seams, folded, and heat-sealed to form a series of 3D heat-sealing seams so as to make a 3D packaging bag for packaging an object to be packaged. The 3D packaging bag provides a cushioning function for the object to be packaged.

Air-filling packaging apparatus

A device and method for horizontally winding and unwinding a parallel wire strand, the device includes guiding device, rotating platform, rail flat wagon, strand winding and unwinding device, tray, several transmitters and programmable controllers, according to different mounted characteristics of winding and unwinding wire strand, the strand winding and unwinding device is divided into two structure forms, that are first inner module and second inner module; first inner module is composed of supporting plate and top drawbar, second inner module is composed of supporting plate and top drawbar, in addition knockout pin of hydraulic jack, can commendably solve 'Hula-circles' problem.

Device and method for winding and unwinding a parallel wire strand horizontally

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Shanghai, China

Fei Xie