Tokico, Ltd.

Hitachi, Ltd.

Hideaki Ikeda

Kazutaka Suefuji

Junichi Ikeda

Susumu Sakamoto

Yuji Komai

Koji Fukui

Yoshikazu Miyamoto

Kazuo Tsuge

Yutaka Morita

Kimio Toriyabe

Teruhisa Kojima

Masayuki Komaki

Takatoshi Murakami

Yasuo Koketu

Masanori Sugimoto

Yasuo Sato

The present invention provides a scroll type fluid machine which enables both of a fixed scroll and an orbiting scroll to be cooled by means of a cooling fan, and which enables an overall size of the machine to be compact. Cooling fansA andB are connected to a rotary shaftbetween an electric motorand orbiting scrollsA andB. Outer casesA andB are provided with flow inlet openingsA andB, flow outlet openingsA andB, scroll ductsA andB and cooling device ductsA andB. Compression portionsA andB are operated by rotatably driving the rotary shaftusing the electric motor. In this instance, the cooling fansA andB are rotated with the rotary shaft. Therefore, with a simple structure having no electric fans, the fixed scrollsA andB, the orbiting scrollsA andB and the cooling devicecan be efficiently cooled, and a compressor having a compact size and a high cooling performance can be formed.

Scroll type fluid machinery

There is provided a scroll compressor comprising: a fixed-side member comprising a casing and a fixed scroll member provided in the casing; a driving shaft rotatably provided in the casing; an orbiting scroll member orbitably provided at a distal end of the driving shaft; a suction opening provided in the fixed-side member; and a discharge opening provided in the fixed-side member. Each of the scroll members includes an end plate and a spiral wrap portion standing on the end plate. The wrap portion of the orbiting scroll member is adapted to overlap the wrap portion of the fixed scroll member so as to define a plurality of compression chambers. The suction opening communicates with the outermost compression chamber, and the discharge opening is adapted to discharge a compressed gas from an inner compression chamber. A seal member comprising an elastic member is provided around an outer circumferential surface of the orbiting scroll member, so as to seal the compression chambers relative to outside air between the orbiting scroll member and the fixed-side member. The seal member has an opening on a radially inner side thereof and has a generally U-shaped cross-section.

Scroll compressor

Disclosed is a control apparatus for correcting the measurement of flow rates for use with a turbine-type flow meter in which the rotation of a turbine rotating in response to the flow velocity of fluid to be measured is detected to produce pulses which are, in turn, integrated to measure the flow rate of the fluid. The apparatus operates to obtain a value representing the rate of reduction in the flow rate from the pulse cycle in order to detect a first time at which the reduction rate increases above a first predetermined value and a second time at which the reduction rate decreases below a second predetermined value, produce a correction value on the basis of the pulse cycle at the second time and the time lag between the first and second times, and integrate pulses other than those generated in the period of time between the first and second times, adding the correction value from the correction value producing means to the integrated value.

Control apparatus for turbine-type flow meter

Growing community of inventors

Kanagawa-ken, Japan

Hideaki Ikeda