Horiba, Ltd.

Satoshi Ohtsuki

Hiroji Kohsaka

Tatsuki Kumagai

Yutaka Yamagishi

Tsutomu Oie

Sayaka Yoshimura

Yoshiko Tsuji

The present invention is intended to reduce noise or vibration occurring in an exhaust gas mixer, and provided with: a mixer main body that has a hollow part extending in an axial direction; an inner pipe part that is provided in the hollow part along the axial direction; a gas introduction part that is provided to the mixer main body, and introduces mixing target gas into a space to spiral the mixing target gas; and a gas lead-out part that is provided in the inner pipe part to lead out the mixing target gas, wherein a central axis of the inner pipe part and a central axis of the hollow part are provided in mutually different positions.

Exhaust gas mixer and constant volume sampling apparatus

An exhaust gas sampling device is provided. An exhaust gas sampling tube for sampling part of the exhaust gas is connected to an exhaust tube in which the exhaust from a source of the exhaust gas flows, and a downstream side of the exhaust gas sampling tube is connected to a dilution tunnel. The device further includes a temperature control mechanism. A temperature of the exhaust gas sampling tube is controlled with the temperature control mechanism based on a temperature of the exhaust gas flowing in the exhaust tube.

Exhaust gas sampling device

The present invention enables the dissipation of thermal energy from a gas chromatography chamber containing a gas chromatography sample by providing the housing in two parts so that ambient air can be bled in during a creation of thermal energy with a heater and additional ambient air can be circulated in a cooling cycle. Additionally, a heat exchanger for receiving liquid nitrogen can also be included to increase the speed in which thermal energy can be dissipated.

Gas chromatography apparatus with temperature controlled chamber

A sampling device for a gas analyzer in which a constant-rate flow of diluted sample gas is sampled by a constant-volume sampling device. A gas inlet port of a sampling passage of the constant-volume sampling device is positioned in a throat portion of a main venturi tube, or slightly upstream or downstream of the throat portion. A cold trap is provided downstream of the sampling passage to collect and supply a portion of the sampled gas to be analyzed. The velocity of the diluted sample gas in the throat portion of the main venturi tube is approximately Mach one, so that the sampling thereof is unaffected by pressure or flow-rate changes elsewhere in the system.

Growing community of inventors

Kyoto, Japan

Satoshi Ohtsuki