Toshiba Carrier Corporation

Carrier Japan Corporation

Norihisa Watanabe

Isao Kawabe

Kazu Takashima

Shoichiro Kitaichi

Takeshi Tominaga

Masayuki Suzuki

Shohei Atobe

Toshimasa Aoki

Tadayuki Yamazaki

A compressor of an embodiment includes a compression mechanism part that compresses a refrigerant in a sealed container. The compression mechanism part includes Cr and includes a first member and a second member which slidingly move relative to each other. The first member has a chromium layer and a nitride layer formed on a base member surface in this order. The nitride layer includes CrN and TiN. Carbide is deposited on a surface of the second member.

Compressor with chromium nitride and titanium nitride layers

A refrigerant compressor includes a first layer () composed of a single layer of chromium, a second layer () composed of an alloy layer of chromium and tungsten carbide, a third layer () composed of an amorphous carbon layer containing at least one of tungsten and tungsten carbide, and a fourth layer () composed of an amorphous carbon layer containing carbon and hydrogen without metals, which are sequentially formed on a surface of a sliding member () of a compression mechanism formed of tool steel. The second layer () is formed to have a chromium content higher on a side of the first layer () than a side of the third layer (), and have a tungsten carbide content higher on the side of the third layer () than the side of the first layer (). In addition, the third layer () is formed to have a tungsten content or a tungsten carbide content higher on a side of the second layer () than a side of the fourth layer ().

Refrigerant compressor and refrigerating cycle device

A vane of a first cylinder is compressed and urged by a spring member. A vane of a second cylinder is compressed and urged corresponding to a differential pressure between an intra-casing pressure guided into a vane chamber and a suction pressure or discharge pressure guided to the cylinder chamber. A pressure shift mechanism which guides the suction pressure or discharge pressure has a branch pipe having a one end connected to a high pressure side of the refrigeration cycle, an other end connected to a suction pipe, and a first on-off valve in a midway portion, and a second on-off valve or a check valve which is provided in the suction pipe on a side upstream of a connection portion of the branch pipe and on a side downstream of an oil returning opening in an accumulator.

Rotary hermetic compressor and refrigeration cycle system

Growing community of inventors

Fuji, Japan

Norihisa Watanabe