Mitsubishi Jukogyo Kabushiki Kaisha

Other

Mitsubishi Heavy Industries Limited

Churyo Engineering Kabushiki Kaishi

Makoto Fujitani

Gregory A Major

Toyotaka Hirao

Xin Zeng

Yukio Nagato

Toshiyuki Shikanai

Takahisa Hirano

Kimiharu Takeda

Masumi Sekita

Katsumi Hirooka

Tetsuzo Ukai

Masashi Hirabayashi

Hiroshi Machida

Sachio Onoda

Masami Kondo

Hideo Honda

Vehicular air conditioner using heat pump

A vehicular air conditioner which is not influenced by fluctuations in engine RPM and which provides air conditioning with low energy consumption includes a variable demand capacity compressor where the suction pressure is self-controlled and can be set using an external signal. The vehicular air conditioner includes a demand capacity change compressor which self-controls at a target suction pressure set using an external signal and based on a discharge temperature set according to an air conditioning load. The external signal sets the target suction pressure to thereby affect a refrigerating cycle operation.

Vehicular air conditioner

A scroll-type compressor having a fixed scroll and a revolving scroll, wherein a portion of either the end plate of the fixed scroll or the top plate above the fixed scroll has annular grooves formed therein, allowing elastic deformation of either the end plate or the top plate in a thrust direction, thus preventing gaps between the spiral wraps of both scrolls.

Scroll-type compressor with an elastically deformable top plate or end

The present invention relates to a scroll type compressor. The compression gas in a discharge chamber is made to flow into a backside small sealed chamber through a leak passage provided before the position on the revolution angle of the revolving scroll, whereat the back side of a volute wrap of the revolving scroll starts to cross a discharge opening and at the same time a pair of small sealed chambers begin to communicate with the discharge chamber.

Scroll type compressor having a leak passage for the discharge chamber

An inexpensive, efficient pump which can supply lubricating oil uses the revolving motion of an orbiting scroll 2. The pump is so constructed that a piston supported by a fixing member 1 is fitted in a cylinder chamber 102 formed in the inner surface of the end plate 21 of an orbiting scroll 2 which revolves while sliding on the fixing member, by which a pump chamber 104 is defined between them. The piston 101 is extended or retracted depending on the revolving motion of orbiting scroll 2, the volume of the pump chamber 104 is increased or decreased, and a fluid suction port 105 and a fluid discharge port 106 are connected to the pump chamber 104 at predetermined time intervals to supply the fluid.

Fluid pump and rotary machine having said fluid pump

A rotary compressor includes a top clearance volume formed between a cylinder chamber and at least one delivery valve. Another top clearance volume, in communication with the cylinder chamber, produces a reverse flow of compressed fluid which generates pulsations adapted to offset a high frequency component of pulsations generated in the cylinder chamber by compressed fluid reversely flowing from the first top clearance volume to the cylinder chamber. Thereby the high frequency component of pulsations generated in the cylinder chamber is eliminated, and a low-noise rotary compressor is provided.

Rotary compressor with clearance volumes to offset pulsations

Growing community of inventors

Nagoya, Japan

Makoto Fujitani