Abstract: An electric compressor includes a compression portion that compresses and discharges a drawn fluid, and a motor of the compression portion. The electric compressor includes an actuator that includes multiple electronic components and drives the motor, a first casing that accommodates the actuator, and a second casing that accommodates the compression portion and the motor. The second casing includes a discharge passage in which a high-temperature fluid compressed by the compression portion flows. A limiting structure that limits the heat transfer from the fluid flowing in the discharge passage is provided between one of the electronic components and the discharge passage. The limiting structure includes a seat portion that defines a gap between a bottom surface of the one of the plurality of electronic components and the discharge passage. According to the electric compressor, the heat transfer from the fluid to the electronic components can be limited.

Abstract: An air conditioning apparatus includes an electric compressor, an inverter, a temperature detection element, and an ECU. The electric compressor compresses a refrigerant drawn from a refrigerant intake port and discharges the refrigerant from a refrigerant discharge port. The inverter is integrated with the electric compressor so as to be cooled by the drawn refrigerant, and operates the electric compressor according to a control signal. The temperature detection element detects a temperature of the inverter. The ECU outputs a control signal to control the inverter. The ECU performs any one or both of a control for reducing a self-cooling amount of the electric compressor and a control for increasing a self-heat generation amount of the inverter with respect to the inverter when the temperature detected by the temperature detection element is lower than a predetermined reference temperature.

Abstract: An air conditioner for a vehicle has a compressor, a radiator, a first pressure reducer, a gas-liquid separator, a second pressure reducer, an exterior heat exchanger, an intermediate pressure refrigerant passage, a switching device, and a controller. The controller operates the switching device to switch from a refrigerant circuit of a two-stage compression mode to a refrigerant circuit of a single-stage compression mode when a compressor stop signal is output in the two-stage compression mode. The single-stage compression mode is a mode that blocks at least a flow of an intermediate-pressure refrigerant into the intermediate pressure refrigerant passage and makes refrigerant remained in the intermediate pressure refrigerant passage to flow out of the intermediate pressure refrigerant passage. The controller stops the compressor after controls the compressor to continue operating for a specified time in the single-stage compression mode.

Abstract: A gas compressor includes a compressor unit having a compressor body for compressing gas and an electricity-generation device generating electricity by obtaining a driving force by vaporizing a working fluid utilizing exhaust heat generated by a compressing action in the compressor body and expanding the working fluid so as to utilize the power generated by the electricity-generation device as a power source, and includes a switch device switching between power from the electricity generation device and power from a commercial power supply to supply power to the power consumption equipment, and a control device detecting an electricity-generation amount or a value correlative to the electricity generation amount and switching between the powers by the switch device, thereby generating the power using exhaust heat as a heat source to surely drive an auxiliary machine by a simple configuration regardless of a shortage of the electricity generation amount.

Abstract: To improve the exhaust heat recovery efficiency, a compressor includes a heat exchanger for cooling a gas, coolant, water, or oil heated by the compressor during compressor operation by heat exchange with a working fluid, for circulating the working fluid of a Rankine cycle. The Rankine cycle is implemented by the heat exchanger, an expander, a condenser, and a circulating pump to circulate the working fluid through the cycle.

Abstract: An air conditioner for a vehicle has a compressor, a radiator, a first pressure reducer, a gas-liquid separator, a second pressure reducer, an exterior heat exchanger, an intermediate pressure refrigerant passage, a switching device, and a controller. The controller operates the switching device to switch from a refrigerant circuit of a two-stage compression mode to a refrigerant circuit of a single-stage compression mode when a compressor stop signal is output in the two-stage compression mode. The single-stage compression mode is a mode that blocks at least a flow of an intermediate-pressure refrigerant into the intermediate pressure refrigerant passage and makes refrigerant remained in the intermediate pressure refrigerant passage to flow out of the intermediate pressure refrigerant passage. The controller stops the compressor after controls the compressor to continue operating for a specified time in the single-stage compression mode.

Abstract: An electric compressor includes a compression portion that compresses and discharges a drawn fluid, and a motor of the compression portion. The electric compressor includes an actuator that includes multiple electronic components and drives the motor, a first casing that accommodates the actuator, and a second casing that accommodates the compression portion and the motor. The second casing includes a discharge passage in which a high-temperature fluid compressed by the compression portion flows. A limiting structure that limits the heat transfer from the fluid flowing in the discharge passage is provided between one of the electronic components and the discharge passage. The limiting structure includes a seat portion that defines a gap between a bottom surface of the one of the plurality of electronic components and the discharge passage. According to the electric compressor, the heat transfer from the fluid to the electronic components can be limited.

Abstract: An air conditioning apparatus includes an electric compressor, an inverter, a temperature detection element, and an ECU. The electric compressor compresses a refrigerant drawn from a refrigerant intake port and discharges the refrigerant from a refrigerant discharge port. The inverter is integrated with the electric compressor so as to be cooled by the drawn refrigerant, and operates the electric compressor according to a control signal. The temperature detection element detects a temperature of the inverter. The ECU outputs a control signal to control the inverter. The ECU performs any one or both of a control for reducing a self-cooling amount of the electric compressor and a control for increasing a self-heat generation amount of the inverter with respect to the inverter when the temperature detected by the temperature detection element is lower than a predetermined reference temperature.

Abstract: A gas compressor includes a compressor unit having a compressor body for compressing gas and an electricity-generation device generating electricity by obtaining a driving force by vaporizing a working fluid utilizing exhaust heat generated by a compressing action in the compressor body and expanding the working fluid so as to utilize the power generated by the electricity-generation device as a power source, and includes a switch device switching between power from the electricity generation device and power from a commercial power supply to supply power to the power consumption equipment, and a control device detecting an electricity-generation amount or a value correlative to the electricity generation amount and switching between the powers by the switch device, thereby generating the power using exhaust heat as a heat source to surely drive an auxiliary machine by a simple configuration regardless of a shortage of the electricity generation amount.

Abstract: A gas compressor includes a compressor unit having a compressor body for compressing gas and an electricity-generation device generating electricity by obtaining a driving force by vaporizing a working fluid utilizing exhaust heat generated by a compressing action in the compressor body and expanding the working fluid so as to utilize the power generated by the electricity-generation device as a power source, and includes a switch device switching between power from the electricity generation device and power from a commercial power supply to supply power to the power consumption equipment, and a control device detecting an electricity-generation amount or a value correlative to the electricity generation amount and switching between the powers by the switch device, thereby generating the power using exhaust heat as a heat source to surely drive an auxiliary machine by a simple configuration regardless of a shortage of the electricity generation amount.

Abstract: To improve the exhaust heat recovery efficiency, a compressor includes a heat exchanger for cooling a gas, coolant, water, or oil heated by the compressor during compressor operation by heat exchange with a working fluid, for circulating the working fluid of a Rankine cycle. The Rankine cycle is implemented by the heat exchanger, an expander, a condenser, and a circulating pump to circulate the working fluid through the cycle.

Abstract: To improve the exhaust heat recovery efficiency, a compressor includes a heat exchanger for cooling a gas, coolant, water, or oil heated by the compressor during compressor operation by heat exchange with a working fluid, for circulating the working fluid of a Rankine cycle. The Rankine cycle is implemented by the heat exchanger, an expander, a condenser, and a circulating pump to circulate the working fluid through the cycle.

Abstract: A gas compressor includes a compressor unit having a compressor body for compressing gas and an electricity-generation device generating electricity by obtaining a driving force by vaporizing a working fluid utilizing exhaust heat generated by a compressing action in the compressor body and expanding the working fluid so as to utilize the power generated by the electricity-generation device as a power source, and includes a switch device switching between power from the electricity generation device and power from a commercial power supply to supply power to the power consumption equipment, and a control device detecting an electricity-generation amount or a value correlative to the electricity generation amount and switching between the powers by the switch device, thereby generating the power using exhaust heat as a heat source to surely drive an auxiliary machine by a simple configuration regardless of a shortage of the electricity generation amount.

Abstract: To improve the exhaust heat recovery efficiency, a compressor includes a heat exchanger for cooling a gas, coolant, water, or oil heated by the compressor during compressor operation by heat exchange with a working fluid, for circulating the working fluid of a Rankine cycle. The Rankine cycle is implemented by the heat exchanger, an expander, a condenser, and a circulating pump to circulate the working fluid through the cycle.

Abstract: Provided is an air compressor that can keep good alignment between pulleys 2b and 3b respectively of a compressor body and an electric motor, and a drive belt 4 placed thereacross. Between a base 1 and the electric motor 3, an adjustment mechanism 5 is provided for adjusting the tension of the drive belt 4 by changing the relative position between the compressor body 2 and the electric motor 3. The adjustment mechanism 5 is provided with an electric-motor base 6 for supporting the electric motor, a support unit 7 that supports the electric-motor base 6 to allow a tilting axis thereof to be able to tilt at a position lower of an output shaft of the electric motor, and fixing unit 8 provided between an end of the electric-motor base 6 and the base 1 for fixing the electric-motor base 6 in a tilting state.

Abstract: An image forming apparatus including (a) a ? conversion unit having a ? conversion table ??i of a first one Vcont? of a designation development contrast in a case that a development contrast correction amount ?Vcont1 is a first value, and a ? conversion table ??i, different from the ? conversion table ??i, of a second one Vcont?, different from the first one Vcont?, of the designation development contrast in a case that the development contrast correction amount ?Vcont1 is a second value different from the first value, and (b) an arithmetic operation unit for calculating a ? conversion table ?Nowi of a third one VcontNow of the designation development contrast in a case that the development contrast correction amount ?Vcont1 is a third value, based on a formula: ?Nowi=??i+(??i???i)×(Vcont??VcontNow/(Vcont??Vcont?), wherein the subscript i is a value of an output density signal in the ? conversion table.

Abstract: To identify the steviol synthetase gene for research and development of metabolic engineering, for example, for increasing a stevioside producing ability. It was successfully found that CYP714A2 derived from Arabidopsis thaliana is surprisingly steviol synthetase. Furthermore, a system in which a large amount of steviol can be biosynthesized was developed by overexpressing this steviol synthetase gene. The steviol synthetase gene is, for example, a polynucleotide encoding a protein which includes the amino acid sequence of SEQ ID NO: 2.

Abstract: The invention provides an image forming apparatus and an image forming method, capable of providing an image with little deterioration, even in case the image contrast has to be adjusted not for the purpose of image adjustment, such as for reducing the toner consumption amount or for preventing the leak in the charging device.

Abstract: The invention provides an image forming apparatus and an image forming method, capable of providing an image with little deterioration, even in case the image contrast has to be adjusted not for the purpose of image adjustment, such as for reducing the toner consumption amount or for preventing the leak in the charging device.

Abstract: The invention provides an image forming apparatus and an image forming method, capable of providing an image with little deterioration, even in case the image contrast has to be adjusted not for the purpose of image adjustment, such as for reducing the toner consumption amount or for preventing the leak in the charging device.