Abstract: A technology of starting power supply from an external device to a load device in a shorter period, after detection of connection between the external device and the load device, is provided. A control device includes a first connector attachable to and detachable from an external device, a power supply path to electrically connect a load device and the first connector, a load switch to switch between connection and disconnection of the power supply path, a protection circuit to protect the load switch from an inrush current to the load switch, the protection circuit including at least a capacitor, and a control circuit. The control circuit is operable to switch the load switch from disconnection to connection after a total time of a preset set time and a first time based on a charging time of the capacitor which has elapsed since connection of the first connector to the external device was detected.

Abstract: An air-conditioning apparatus includes: a refrigerant circuit; a casing configured to accommodate therein a heat exchanger and an internal refrigerant pipe, the heat exchanger and the internal refrigerant pipe each forming a part of the refrigerant circuit; a refrigerant pipe connection portion; an opening port formed on the casing, and configured to allow an interior of the casing to communicate with an exterior of the casing; a cover portion configured to cover a periphery of the refrigerant pipe connection portion, and cover, the opening port; and a refrigerant sensing unit provided in a refrigerant leakage sensing space, the refrigerant leakage sensing space being made up of an outside space of the casing and an inside space of the casing, the outside space being covered by the cover portion, the inside space communicating with the outside space through the opening port.

Abstract: A scroll casing has a scroll portion, a discharge portion provided with a discharge port, and a tongue portion. An extended plate has, in a cross section obtained by cutting in a thickness direction, a change point, at which an enlargement ratio of an area of the cross section is enlarged so as to be larger on a downstream side than that on an upstream side due to a change of inclination. In the extended plate, an angle ?1, and an angle ?2 satisfy a relationship of either 0??2<?1 or 0<?2??1. A distance L1 and a distance L2 satisfy a relationship of L2<L1.

Abstract: There is provided a gas turbine combustor which includes a fuel nozzle which is high in damping performance against vibration stress caused by unstable combustion, in the gas turbine combustor which includes the fuel nozzle which is molded by 3D additive manufacturing. In the gas turbine combustor which includes the fuel nozzle which is molded by the 3D additive manufacturing, the fuel nozzle has a first region on which metal powders are sintered and a second region which is surrounded by the first region and on which the metal powders are not sintered.

Abstract: A blade avoids fretting damage while reducing stress occurring at the neck portion caused by a stress relief groove. The blade is disposed on an outer periphery of a rotor, and includes a blade portion, a dovetail portion for holding the blade on the rotor, a platform portion that connects the dovetail portion and the blade portion, and a stress relief groove that connects a side surface of the platform portion and a blade load bearing surface of the dovetail portion. The dovetail portion has a width that increases toward its bottom side within a range from a connection point between the side surface of the platform portion and the stress relief groove to a connection point between the dovetail portion and the stress relief groove.

Abstract: A compressor is provided that can avoid fretting damage to improve fatigue strength reliability. The present invention is characterized in that a portion on the circumferential outside and radial outside of a radial outside contact end portion 9a with a dovetail portion 4a is removed from a wheel 7. Specifically, the wheel 7 is formed with a groove portion 10 in an area that is located on the circumferential outside of the radial outside contact end portion 9a of a blade securing portion 15 with the dovetail portion 4a and that includes a radial outside of the contact end portion 9a. Rigidity on the wheel side of the contact end portion 9a between the dovetail portion 4a and the wheel 7 is reduced to reduce the occurrence of stress, thereby avoiding the lowering of fatigue life reliability resulting from fretting.

Abstract: Disclosed herein is a blade that avoids fretting damage, while reducing stress occurring at the neck portion as caused by the stress relief groove. The blade disposed on an outer periphery of a rotor is provided. The blade includes: a blade portion; a dovetail portion for holding the blade on the rotor; a platform portion that connects the dovetail portion and the blade portion; and a stress relief groove that connects a side surface of the platform portion and a blade load bearing surface of the dovetail portion, wherein the dovetail portion has a width that increases toward a bottom side thereof within a range from a connection point between the side surface of the platform portion and the stress relief groove to a connection point between the dovetail portion and the stress relief groove.

Abstract: Disclosed is an electronic instrument having a housing, a battery accommodating section provided in the housing, and a spring for battery ejection which is pressed by a battery inserted into the battery accommodating section and thus stored in power. In the instrument, the spring for battery ejection includes a spring force generation portion, a first arm portion provided at one end of the spring force generation portion, a second arm portion that is provided at the other end of the spring force generation portion and extends with a certain opening angle with respect to the first arm portion, a first shaft portion provided at an end of the first arm portion, and a second shaft portion provided at an end of the second arm portion. The first shaft portion is mounted in a first bearing portion provided in the housing, and the second shaft portion is slidably mounted in a second bearing portion provided in the housing.

Abstract: Disclosed is an electronic instrument having a housing, a battery accommodating section provided in the housing, and a spring for battery ejection which is pressed by a battery inserted into the battery accommodating section and thus stored in power. In the instrument, the spring for battery ejection includes a spring force generation portion, a first arm portion provided at one end of the spring force generation portion, a second arm portion that is provided at the other end of the spring force generation portion and extends with a certain opening angle with respect to the first arm portion, a first shaft portion provided at an end of the first arm portion, and a second shaft portion provided at an end of the second arm portion. The first shaft portion is mounted in a first bearing portion provided in the housing, and the second shaft portion is slidably mounted in a second bearing portion provided in the housing.