Kabushiki Kaisha Toyoda Jidoshokki Seisakusho

Kabushiki Kaisha Toyota Jidoshokki

Muneharu Murase

Hayato Ikeda

Koichi Ito

Mitsuhiro Hattori

Katsuya Ohyama

Masahiro Kawaguchi

Masaki Ota

Tetsuhiko Fukanuma

Masakazu Murase

Hiroyuki Gennami

Atsuyuki Morishita

Yumin Hishinuma

Jun Yamazaki

Atsushi Nishizawa

Kazuhiro Onara

Kenji Maemura

An electric compressor includes a rotary shaft, an electric motor, a compression mechanism, and a housing. The electric motor has a stator including a cylindrical stator core and a coil that has a coil end. The housing has a suction port and a main passage through which a fluid is flowed. An introduction hole through which the fluid is introduced into the compression mechanism is disposed opposite from the main passage. The housing has a coil end area in which a coil end of is disposed. The suction port and the introduction hole are connected via the main passage and the coil end area. The housing further has a groove including a first groove portion and a second groove portion having a depth greater than the first groove portion. A cross sectional are of a first passage portion is smaller than a cross sectional area of the main passage.

Electric compressor

The orbiting base plate has a compression side surface and a back pressure chamber side surface. The gas passage has an opening in the compression side surface of the orbiting base plate between portions of the orbiting spiral wall that face each other, and the gas passage has an opening in the back pressure side surface at a position that faces an area on a radially inner side than the outer circumference of the bearing, so as to feed the refrigerant gas in the compression chamber to the back pressure chamber.

Scroll-type compressor with gas passage formed in orbiting plate to restrict flow from compression chamber to back pressure chamber

In the suction valve structure of the piston type compressor of the present invention, the primary suction valve is a flexible deforming valve composed of a deforming section , which is supported and bent by a cantilever method, and a closing section which connects with a forward end of the deforming section and closes the primary suction port . The auxiliary suction valve is a flexible deforming valve composed of a deforming section , which is supported-and bent by a cantilever method, and a closing section which connects with a forward end of the deforming section and closes the auxiliary suction port . In the present invention, the length of the deforming section of the primary suction valve is approximately the same as that of the deforming section of the auxiliary suction valve , however, the width of the deforming section of the primary suction valve is made larger than that of the deforming section of the auxiliary suction valve

Structure for suction valve of piston type compressor

In a variable displacement compressor that draws, compresses, and discharges refrigerant gas, the displacement is adjusted by varying the inclination of a cam plate in accordance with the difference between the pressure in a crank chamber and the pressure in cylinder bores. A pressurizing passage connects the crank chamber to a discharge passage. A bleed passage connects the crank chamber to a suction chamber. A displacement control valve is externally controlled and varies the pressure in the crank chamber by adjusting the opening size of either the pressurizing passage or the bleed passage. A suction control valve closes a duct between the suction chamber and an evaporator when the pressure in the crank chamber exceeds a predetermined level to prevent an excessively high pressure in the crank chamber.

Variable displacement compressor

Compressor for a vehicle air conditioner

Growing community of inventors

Kariya, Japan

Muneharu Murase