Kabushiki Kaisha Toyoda Jidoshokki Seisakusho

Kabushiki Kaisha Toyota Jidoshokki

Hirohisa Katoh

Hidehito Kubo

Takashi Ban

Masahiko Kimbara

Toshiro Fujii

Ryuta Kawaguchi

Takahiro Moroi

Yoshiyuki Nakane

Tatsuyuki Hoshino

Masato Sowa

Koji Kawamura

Tsutomu Nasuda

Daisuke Satoh

The scroll-type compressor with an integrated motor of the present invention comprises a housing a fixed scroll fixed to the housing a movable scroll installed eccentrically to the fixed scroll and a motor portion and is characterized in that the housing comprises a high pressure chamber to which compressed gases are supplied, a first cooling chamber &prime; installed contiguous to the high pressure chamber and to which cooling fluid is supplied, a second cooling chamber which cools the motor portion and is supplied with the cooling fluid, and a fluid passage that connects the first cooling chamber &prime; and the second cooling chamber and passes the cooling fluid in the direction from the first cooling chamber &prime; to the second cooling chamber

Scroll-type compressor with an integrated motor and a compact cooling system

A fuel cell system having a fuel cell, a gas compressor arranged to compress process air and connected to the fuel cell via an air-supply line to supply the compressed process air, a recovery unit connected to the fuel cell via an exhaust gas line, a liquid-gas separating unit arranged in the exhaust gas line to separate produced water from an exhaust gas and to store the separated produced water in a water storing vessel portion thereof, and a water-supply line extending from the bottom of the water storing vessel portion to a water-supply port provided for the gas compressor to supply the gas compressor with the produced water under the pressure of the exhaust gas applied to the produced water stored in the water storing vessel.

Apparatus for regulating humidity of process air in fuel cell system

A fuel cell system includes a fuel cell, a motor, a scroll type compressor, connected to the air feeding pipe of the fuel cell and a scroll type regenerator connected to the air exhaust pipe of the fuel cell. The movable scrolls of the compressor and the regenerator are coupled to opposite ends of the motor output shaft in symmetry with each other. A pressure ratio of the regenerator is selected to be smaller than that of the compressor by an amount corresponding to a pressure loss of the exhaust gas across the fuel cell, so that the rotation of the regenerator never transmits a negative torque to the motor output shaft MC. Therefore, the regenerator can efficiently provide power assistance to the compressor.

Fuel cell system having scroll type compressor and regenerator

A fuel cell system including a fuel cell having an air feeding tube, an air discharging tube and a fuel feeding tube, the air discharged from the fuel cell through the air discharging tube containing water. The system also includes a compressor, a water separation tank, and a water supply passage for supplying water collected in the water separation tank to the compressor. When the system is to be stopped, the water supply passage is first blocked while the compressor is operating. The humidity or the temperature of the process air is then detected, and the compressor is stopped when the detected humidity is lower than a predetermined value, or when the detected temperature is higher than a predetermined value.

Method for preventing compressor from freezing in automobile fuel cell system

Fuel cell apparatus

A solid polymer electrolyte type fuel cell system having a reduced size and weight, which exhibits an improved efficiency. To supply reaction gas to an anode or a cathode, a water lubricated type compressor is employed with the following operational advantages. The face pressure of sliding faces of the water lubricated type compressor, that is the compression ratio and number of revolutions thereof, can be greatly improved, as compared to the conventional oil free type compressor. The compression efficiency is improved by reducing of leakage of reaction gas between the sliding faces. No oil film is formed so as not to deteriorate the battery performance. The size of the water lubricated type compressors can be greatly reduced to about one-third to a half of the conventional oil free type compressor. In addition, the improvement of the compression efficiency and reduction of the friction loss result in a great reduction of driving power. Hence, the fuel cell system with the present arrangement is practical particularly when used as a power supply for driving a vehicle, which is severely required to have a reduced size and weight and to be economical.

Solid polymer electrolyte fuel cell system

Growing community of inventors

Kariya, Japan

Hirohisa Katoh