Calsonic Kansei Corporation

Marelli Cabin Comfort Japan Corporation

Tatsuya Osaki

Hirotada Shimaguchi

Masahiro Tsuda

Kouji Hirono

Shizuma Kaneko

Mitsuaki Nagata

Akihiro Okajima

Satoshi Ogihara

Jun Hatakeyama

Tomohiro Maeda

Toshikatsu Miyaji

Yasuhito Ookawara

Kazumichi Okano

This air conditioning device, which is installed in a vehicle, is provided with a gas-liquid separator which separates liquid-phase refrigerant and gas-phase refrigerant, guides, to a compressor, the gas-phase refrigerant flowing in from an outdoor heat exchanger during heating operations, and guides, to an expansion valve, the liquid-phase refrigerant flowing in from the outdoor heat exchanger during cooling operations. The gas-liquid separator is provided further rearward inside the vehicle than the outdoor heat exchanger. The compressor is provided further rearward inside the vehicle than the gas-liquid separator.

Air conditioning device

An air-conditioning device includes: a compressor; an outdoor heat exchanger; an evaporating unit configured to evaporate refrigerant a heater unit configured to heat the air by using the heat of the refrigerant a liquid receiver arranged at the downstream side of the outdoor heat exchanger and a restrictor mechanism provided between the heater unit and the outdoor heat exchanger, wherein, in an operation state in which the flow of the refrigerant is restricted by the restrictor mechanism and heat is released in the heater unit, a first operation mode and a second operation mode are switched, the first operation mode being set such that the liquid-phase refrigerant is stored in the liquid receiver and the gaseous-phase refrigerant is guided to the compressor and the second operation mode being set such that the liquid-phase refrigerant stored in the liquid receiver is guided to the evaporating unit.

Air-conditioning device

This gas-liquid separator is provided with: a tank part which stores and separates a refrigerant; and a pipe connection part forming outlet/inlet ports for the refrigerant from the tank part. The pipe connection part has: a first connection part having a first connection pipe which guides the refrigerant to an expansion valve; a second connection part having a second connection pipe through which the cooled refrigerant returns; a third connection part having a third connection pipe which guides the refrigerant to a compressor; a fourth connection part having a fourth connection pipe which guides the refrigerant into the tank part from an outdoor heat exchanger; and a first flow path switching valve which allows the inside of the tank part to communicate with the third connection pipe during heating operations, and allows the second connection pipe to communicate with the third connection pipe during cooling operations.

Gas-liquid separator

A gas compressor includes at least two first and second discharge ports () which are provided at an upstream side in a rotation direction of a rotor () along a peripheral direction of an inner peripheral surfaceof a cylinder () with respect to a closest area (proximity part ()) where the inner peripheral surface () of the cylinder () and an outer peripheral surface () of the rotor () are closest in a range of one revolution of a rotation shaft () and configured to discharge the refrigerant gas compressed in compression chambers (). Of the first and second discharge ports (), on only the first discharge port () closest to the proximity part (), a cutout groove portion () is provided at a downstream-side edge portion of the first discharge port () in the rotation direction of the rotor ().

Gas compressor

A gas compressor includes a cylinder member, a rotor, and a plurality of vanes, wherein a proximal section is provided between the cylinder member and the rotor, so that a single cylinder room which performs a refrigerant gas compression cycle one-time per one rotation of the rotor is defined, and at least one sub-discharge section which maintains pressure of the refrigerant gas in a compression room in discharge pressure by releasing pressure of the compression room when the pressure of the refrigerant gas in the compression room reaches the discharge pressure.

Gas compressor with discharge section and sub-discharge section

A compressor body is formed such that a compression chamber is divided by a rotor, a cylinder, side blocks and vanes, a housing which covers the compressor body is included, and an outline shape of a cross section of an inner circumferential surface of the cylinder is formed such that, in a period of one rotation of the rotor, (i) a region in which a capacity of the compression chamber increases, (ii) a region in which the capacity of the compression chamber reduces, (iii) a region in which a capacity reduction rate of the compression chamber is smaller than a capacity reduction rate of the region (ii), and (iv) a region in which the capacity reduction rate of the compression chamber is larger than a capacity reduction rate of the region (iii) are consecutively provided in order.

A compressor () has a compressor main body () formed so that one stroke cycle is performed in a compression room () which is partitioned by a rotor (), cylinder (), side blocks (), and vanes () during one revolution of the rotor (). A cyclone block () separates a refrigerant oil (R) from refrigerant gas (G), wherein a second discharge section () which discharge the refrigerant gas (G) when the pressure inside the compression room () reaches the discharge pressure before the compression room () faces a first discharge section () is formed, and a communicating path () which connects a discharge chamber () in the first discharge section () and a discharge chamber () in the second discharge section () is formed on the upper stream side from the cyclone block ().

In a gas compressor, an outline shape of an inner peripheral surface () of a cylinder () is set such that in a point before a first compression chamber (B) adjacent to a second compression chamber (A) in an upstream side in a rotational direction (W) is exposed to a discharge hole () of a primary discharge portion () with rotation of a rotor () in the rotational direction (W) (point where the first compression chamber (B) is positioned upstream of an angular position of being exposed to the discharge hole () of the primary discharge portion ()), a pressure of refrigerant gas (G) inside the compression chamber () reaches a discharge pressure. Therefore, the discharge hole () of the primary discharge portion () always discharges the refrigerant gas (G) from the compression chamber ().

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Saitama, Japan

Tatsuya Osaki