Abstract: In an air conditioner having a main body provided with a panel 1 including a front panel 1a and a top panel 1b, the main body incorporating an air passage connecting an air inlet 2 and an air outlet 3, an air filter 4, a heat exchanger 5, a blower fan 6, and a dedusting device 7 attached to the front face of the air filter 4 which is reciprocated along the surface of the air filter 4, the top panel 1b is opened/closed as the dedusting device 7 is reciprocated.

Abstract: An inverter unit includes a DC power source, an inverter circuit having two or more pairs of switching elements which are connected in parallel to the DC power source, so that a DC voltage of the DC power source is converted into a pulse train-like, pseudo-AC voltage output from the inverter circuit, and a PWM generator connected to the inverter circuit for adjusting the pseudo-AC voltage by pulse width modulation. Further, the inverter unit includes a voltmeter for detecting an actual, output voltage which is output from the inverter circuit, and a duty cycle controller for controlling an output duty cycle, so that the detected, actual, output voltage becomes a target output voltage. In this inverter unit, a desirable, output voltage may be obtained stably and accurately even if a voltage of a power source fluctuates.

Abstract: The present invention offers a power steering device for a four-wheel drive, which includes: a first self-aligning torque estimation unit for estimating a self-aligning torque generated in a current vehicle behavior as a first self-aligning torque; a second self-aligning torque estimation unit for estimating a self-aligning torque that is to influence a subsequent vehicle behavior as a second self-aligning torque; a self-aligning torque change amount calculation unit for calculating a difference of the second self-aligning torque from the first self-aligning torque as a self-aligning torque change amount; and an assisting force correction unit for determining and outputting a corrected value of an assisting force to be generated for a steering operation based on the self-aligning torque change amount.

Abstract: A method or apparatus for controlling a brushless motor having an inverter. The inverter comprises a first and a second plurality of switching elements at a first and second phase sides, respectively, and a drive control device. The drive control device switches either a state of the first or the second plurality of switching elements. A first transient voltage is generated in each second switching element when the state of the second plurality of switching elements is switched. The second transient voltage is generated in each first switching element when the state of the first plurality of switching element is switched. Timing of switching the state of the first plurality of switching elements by the PWM control is altered, such that a combined voltage of the first and the second transient voltage is less than a maximum allowable voltage of the first plurality of switching element or of the second plurality of switching elements.

Abstract: To provide a gas sensor and a method of sensing the gas concentrations which are capable of a battery drive through low power consumption and highly reliable, the gas sensor in which an electromotive force type gas sensor element is formed on a substrate, wherein the electromotive force type gas sensor element has a heating element formed on the substrate, a layer of solid electrolyte formed with an insulating layer interposed on the heating element and two electrodes formed on the solid electrolyte and is characterized in that the substrate is a heat-resistant glass base substrate.

Abstract: A motor-driven compressor according to the present invention is formed with a housing that contains a compression portion and a motor for compressing refrigerant. The compressor housing further is provided with a suction housing for introducing the refrigerant. A capacitor is provided for smoothing a current that is supplied from a power source to the motor. The capacitor is in contact with the suction housing. In such motor-driven compressors, because the capacitor is in contact with the suction housing, heat transfer from the capacitor to the housing may effectively be facilitated. In further embodiments of the present invention, the capacitors may be disposed on various portions of the suction housing and in various orientations relative to an axial direction of the motor-driven compressor. These selected orientations reduce the dimensions of the motor-driven compressor.

Abstract: A method or apparatus for controlling a brushless motor having an inverter. The inverter comprises a first and a second plurality of switching elements at a first and second phase sides, respectively, and a drive control device. The drive control device switches either a state of the first or the second plurality of switching elements. A first transient voltage is generated in each second switching element when the state of the second plurality of switching elements is switched. The second transient voltage is generated in each first switching element when the state of the first plurality of switching element is switched. Timing of switching the state of the first plurality of switching elements by the PWM control is altered, such that a combined voltage of the first and the second transient voltage is less than a maximum allowable voltage of the first plurality of switching element or of the second plurality of switching elements.

Abstract: A motor-driven compressor according to the present invention is formed with a housing that contains a compression portion and a motor for compressing refrigerant. The compressor housing further is provided with a suction housing for introducing the refrigerant. A capacitor is provided for smoothing a current that is supplied from a power source to the motor. The capacitor is in contact with the suction housing. In such motor-driven compressors, because the capacitor is in contact with the suction housing, heat transfer from the capacitor to the housing may effectively be facilitated. In further embodiments of the present invention, the capacitors may be disposed on various portions of the suction housing and in various orientations relative to an axial direction of the motor-driven compressor. These selected orientations reduce the dimensions of the motor-driven compressor.

Abstract: A radiation thermometer measures temperature of the eardrum. The thermometer comprises a signal processor for calculating a temperature from an output of a light receptor, which receives only the infrared rays radiated directly from the eardrum and/or vicinity of it, and a notification system for notifying the temperature resulted from the calculation. Since the structure does not receive an influence of any radiant heats from other than those of the eardrum and/or vicinity of it, temperature change of a probe does not become a factor of measuring errors, so as to offer an accurate measurement of temperatures.

Abstract: A high frequency heating apparatus for heating an object to be heated is provided with an electromagnetic wave emission device for emitting electromagnetic waves, a local heating device capable of heating an optional portion of the object by the electromagnetic waves emitted from the emission device, and a control device for controlling the local heating device. The high frequency heating apparatus is further provided with a stage on which the object is placed, a protecting device for protecting the local heating device, a setting device and a detection device, so that the local heating device, the electromagnetic wave emission device or the stage is controlled in accordance with the setting device or detection device.

Abstract: A high frequency heating apparatus for heating an object to be heated is provided with an electromagnetic wave emission device for emitting electromagnetic waves, a local heating device capable of heating an optional portion of the object by the electromagnetic waves emitted from the emission device, and a control device for controlling the local heating device. The high frequency heating apparatus is further provided with a stage on which the object is placed, a protecting device for protecting the local heating device, a setting device and a detection device, so that the local heating device, the electromagnetic wave emission device or the stage is controlled in accordance with the setting device or the detection device.

Abstract: A cooking appliance performs cooking which is remotely controlled, based on information relating to the object to be heated, as the information is transmitted to the appliance's computer from a management's computer. The cooking appliance can also cook any part of food in the cooking chamber locally.

Abstract: A kana-to-kanji conversion system, in which an input character string is displayed in Romaji in the order in which the characters are inputted in a client on a network, the input character string in Romaji is transmitted successively from the client to a server, a kana character string is obtained by processing the successively transmitted input character string in the server, the kana character string is returned to the originator client from the server, and, of the displayed Romaji in the client, a display of a section corresponding to the returned kana character string is changed to the kana character string.

Abstract: A high frequency heating apparatus for heating an object to be heated is provided with an electromagnetic wave emission means for emitting electromagnetic waves, a local heating means capable of heating an optional portion of the object by the electromagnetic waves emitted from the emission means, and a control means for controlling the local heating means. The high frequency heating apparatus is further provided with a stage on which the object is placed, a protecting means for protecting the local heating means, a setting means and a detection means, so that the local heating means, the electromagnetic wave emission means or the stage is controlled in accordance with the setting means or the detection means.

Abstract: A high frequency heating arrangement includes a power converting unit with one or more semiconductor devices which dissipates a slight heat loss. A magnetron receives an output from the power converting unit and supplies electromagnetic waves to a heating chamber. The magnetron dissipates a heat loss that is relatively larger than that of the power converting unit. A cooling fan has a motor which dissipates a heat loss which is relatively smaller than that of the power converting unit. The cooling fan is for cooling the power converting unit and the magnetron. A case is provided in which at least the power converting unit and the magnetron are housed and which is made of an electricity-conductive material. A cooling air passage, along which the motor and the case are arranged, and through which air flows from said cooling fan is provided. Air sent from the cooling fan first cools the motor, then cools at least a portion of the power converting unit, and finally cools the magnetron.

Abstract: An electric cooking apparatus includes a single power converter section for converting power supplied from an external AC power source. A heating-energy radiator section receives the converted power from the power converter section and radiates heating energy to a heating chamber. A battery is also provided for supplying power to the power converter section such that a sum of the power from the external AC power source and the battery is converted by the power converting section when an instantaneous voltage of the external AC power source is smaller than a predetermined voltage level, which predetermined voltage level is smaller than a maximum instantaneous voltage of the external AC power source.

Abstract: A planetary gear device as a central differential distributes an output torque of a transmission to the front wheels and the rear wheels of a four-wheel drive motor vehicle. A fluid operated clutch is provided between a sun gear and a ring gear of the planetary gear device. A desired speed ratio between front-wheel speed and rear-wheel speed at cornering is calculated based on vehicle speed and steering angle of the vehicle. A torque distribution ratio is determined in accordance with a difference between the desired speed ratio and an actual speed ratio between the front-wheel speed and the rear-wheel speed. The clutch pressure is controlled in response to the torque distribution ratio for engaging the clutch so that the average speed ratio coverages to the desired speed ratio.