Komatsu Corporation

Other

Shunsuke Yoshioka

Natsushi Suzuki

Hisashi Nara

Hiroyuki Shinozaki

Takayuki Yabu

Toshiharu Nakazawa

Takanobu Ishihara

Shinichi Sekiguchi

Toshimitsu Barada

Kiyoharu Nakao

Atsushi Ooyama

Masahiko Hoshiya

Youichi Hayashi

Yuusuke Igarashi

A work vehicle includes a condenser, a fan, a variable mechanism, a fan control unit, an outside air temperature sensor, and a storage unit. The condenser cools a cooling medium used in an air conditioner. The fan cools the condenser. The variable mechanism can change a number of rotations of the fan. The fan control unit controls the variable mechanism. The storage unit stores a plurality of control maps for setting the number of rotations of the fan to respective different numbers of rotations of the fan in accordance with the outside air temperature detected by the outside air temperature sensor. The fan control unit controls the variable mechanism in accordance with one control map selected from the plurality of control maps stored in the storage unit based on an operating state of the air conditioner, to control the number of rotations of the fan.

Work vehicle

An excimer laser apparatus in which deterioration of the laser gas in the laser container can be suppressed, and damage to the magnetic bearings caused by the laser gas can be suppressed, and which can be reduced in size and operated efficiently, and has low power consumption. Each electromagnet (stator) ( - ) of a magnetic bearing ( ) for supporting a rotary shaft ( ) of a circulation fan includes excitation coils. Each of the coils is arranged as one unit by embedding a coil body in a ceramic or glass type hardened material which is non-magnetic and has corrosion resistance against a laser gas. The excitation coils are attached to magnetic poles. Alternatively, coil wires ( ) of a radial magnetic bearing ( ) can be isolated from a corrosive atmosphere by means of a separation wall ( ) while projecting portions of cores ( ) extend through the separation wall ( ) and are exposed toward a magnetic bearing rotor ( ).

Excimer laser apparatus

The invention provides a discharge electrodes structure which can be easily replaced and adjustable a distance between the discharge electrodes, and a laser apparatus employing the discharge electrodes. Accordingly, the laser apparatus is provided with a pair of anode ( A) and cathode ( B) provided within a laser chamber ( ) for sealing a laser medium in an opposing manner, generating a discharge so as to excite the laser medium and oscillating a laser beam, a conductive anode base ( ) holding the anode, an insulative cathode base ( ) placed so as to close an opening portion ( ) provided in the laser chamber and holding the cathode, a return plate ( ) suspending the anode base from the cathode base so as to supply a current to the anode, and an anode support bar ( ) for connecting the cathode base to the anode base so as to suspend the anode from the cathode base.

Discharge electrodes structure for laser apparatus and laser apparatus therewith

A gas laser device including a dust filter with which a flow rate of laser gas flowing between discharge electrodes is approximately uniform in a longitudinal direction of the discharge electrodes without a variation with time is provided. For this purpose, the gas laser device includes a laser chamber ( ) containing laser gas, a pair of discharge electrodes ( ) disposed inside the laser chamber ( ) to face to each other for exciting a laser medium by discharge to thereby oscillate laser light, a fan ( ) for circulating the laser gas to send the same to an area between the discharge electrodes ( ), and a dust filter ( ) for eliminating dust generated inside the laser chamber ( ), and has a configuration in which a filter inlet port ( ), which is formed in an inner wall ( A) of the laser chamber ( ) and guides the laser gas into the dust filter ( ), is formed to be approximately vertical to the inner wall ( A) of the laser chamber ( ).

Gas laser device

An excimer laser device which neither corrodes due to a laser gas nor contaminates the laser gas is provided. For this purpose, in an excimer laser device including a cross flow fan ( ) disposed in a chamber ( ) for circulating a laser gas, magnetic bearings ( ) having outer ring magnet coils ( ) and inner ring magnetic substances ( ) for rotatably supporting a rotating shaft ( ) by magnetic force, and a motor ( ) having a stator ( ) and a rotor ( ) for directly and rotationally driving the cross flow fan ( ), the outer ring magnet coils ( ), the inner ring magnetic substances ( ), the rotor ( ), and the stator ( ) are respectively housed in shielded spaces shielded from the laser gas.

Excimer laser device

Growing community of inventors

Oyama, Japan

Shunsuke Yoshioka