Abstract: A compressor includes a compression mechanism that compresses refrigerant, and an electromotive mechanism that drives the compression mechanism. A shell accommodates the compression mechanism and the electromotive mechanism, with a reservoir inside the shell and that stores mixed liquid including liquid refrigerant and refrigerating machine oil. An electrode is provided inside the reservoir and faces an inner surface of the shell.

Abstract: A scroll compressor is provided that is configured to increase the amount of refrigerant injected into a target compression chamber to which refrigerant is desired to be injected. The scroll compressor has a fixed scroll that has a first base plate with an injection-pipe connection port to which an injection pipe is connected, a first injection hole that passes through the first base plate and communicates with one of the compression chambers , a communication hole that communicates with the injection-pipe connection port and the first injection hole, a second injection hole that passes through the first base plate and communicates with one of the compression chambers with which the first injection hole communicates, and a groove that is formed in a face opposite to a face on which a first scroll wrap is formed and communicates with the first injection hole and the second injection hole.

Abstract: A refrigeration cycle apparatus includes a refrigerant circuit and allows refrigerant containing a halogenated hydrocarbon to circulate in the refrigerant circuit. The halogenated hydrocarbon has at least one of C—I bond, C—Br bond, and C—CI bond and has no double bond, at least one of members constituting the refrigerant circuit is a copper-containing member, and at least a part of a surface of the copper-containing member does not contact the refrigerant.

Abstract: A device management system having a device having a structural component and a terminal connected to the device via a network includes a feature value detection unit provided in the device and for detecting a feature value of the structural component, a storage device storing in time series the feature value detected by the feature value detection unit, a lifespan estimation unit for estimating a lifespan of the structural component from the feature value stored in the storage device, a determination unit for determining whether a remaining period that is a time period from a time at which estimation is performed to an end of the lifespan is less than or equal to a set scheduled period, and a notification unit provided in the terminal and for sending a notification indicating that the remaining period is less than or equal to the set scheduled period.

Abstract: A compressor includes a compression mechanism that compresses refrigerant; a main shaft that transmits a rotational driving force to the compression mechanism; a balance weight provided below the compression mechanism and integrated with the main shaft, the balance weight having a cylindrical outer peripheral surface centered at the main shaft; and an oil sump portion provided below the balance weight and stores lubricating oil to be supplied to the compression mechanism. The balance weight has an annular oil-receiving recessed portion in an upper surface, the oil-receiving recessed portion being centered at the main shaft and integrated with the balance weight. The balance weight has a hollow portion in a lower surface, the hollow portion extending in part of the lower surface in a peripheral direction around the main shaft and being integrated with the balance weight. The oil-receiving recessed portion communicates with at least part of the hollow portion.

Abstract: A scroll compressor includes an orbiting scroll, a fixed scroll, and a shell. The fixed scroll is configured to form a compression chamber together with the orbiting scroll. The shell accommodates the orbiting scroll and the fixed scroll. The fixed scroll includes a base plate and a scroll body. The base plate is fixed to the shell. The scroll body projects from the base plate toward the orbiting scroll. The base plate has a stress absorber that is formed outside the scroll body in a radial direction and that is configured to absorb stress from an outer region in the radial direction. A weld joint is formed in an overlap region where the shell and the base plate are fixed to each other and overlap each other. The stress absorber is provided on a line that passes through a center of the base plate and the weld joint.

Abstract: A scroll compressor includes a frame holding an orbiting scroll configured to slide, a fixed scroll configured to form a compression chamber together with the orbiting scroll, and a shell accommodating the frame and the fixed scroll. The shell includes a first inner wall surface and a first protrusion protruding from the first inner wall surface to position the fixed scroll, and the fixed scroll is fixed to the first inner wall surface.

Abstract: A device management system having a device having a structural component and a terminal connected to the device via a network includes a feature value detection unit provided in the device and for detecting a feature value of the structural component, a storage device storing in time series the feature value detected by the feature value detection unit, a lifespan estimation unit for estimating a lifespan of the structural component from the feature value stored in the storage device, a determination unit for determining whether a remaining period that is a time period from a time at which estimation is performed to an end of the lifespan is less than or equal to a set scheduled period, and a notification unit provided in the terminal and for sending a notification indicating that the remaining period is less than or equal to the set scheduled period.

Abstract: A scroll compressor including an orbiting scroll and a fixed scroll. A compression chamber is formed by combining a fixed-scroll volute of the fixed scroll and an orbiting-scroll volute of the orbiting scroll. Each of sub-discharge ports of the fixed scroll brings any one of a first compression chamber and a second compression chamber of a compression chamber, the first compression chamber being defined by an inward-facing surface of the fixed-scroll volute and an outward-facing surface of the orbiting-scroll volute, the second compression chamber being defined by an outwardfacing surface of the fixed-scroll volute and an inward-facing surface of the orbiting scroll volute, and a discharge side into communication with each other.

Abstract: A scroll compressor includes a bush having a shaft part and a balance weight part. The balance weight part is secured to an outer periphery of the shaft part by shrink-fitting. The shaft part includes: a cylindrical body part; and a cylindrical coupling part which extends outward from an axial end portion of the body part, and to which the balance weight part is joined. The bush satisfies the following requirements: 1.2?D2/D1?1.6; and??(a) 1.0?[(D2?D3)/(D4?D2)]×E1/E2?3.5,??(b) where D1 is the outer diameter of the body part, D2 is the outer diameter of the coupling part, D3 is the inner diameter of the body part, D4 is the outer diameter of the balance weight part, E1 is the Young's modulus of the shaft part, and E2 is the Young's modulus of the balance weight part.

Abstract: A scroll compressor includes an orbiting scroll including an end plate and a spiral element on the end plate, a fixed scroll including an end plate and a spiral element on the end plate, and an Oldham ring including a support. The scroll compressor satisfies a relation of ?1>?2, where ?1 denotes each of the axial length of a gap between the tip of the spiral element of the orbiting scroll and the end plate of the fixed scroll and a gap between the tip of the spiral element of the fixed scroll and the end plate of the orbiting scroll, and ?2 denotes the axial length of a gap between the end plate of the orbiting scroll and the support of the Oldham ring.

Abstract: A compressor includes: a shell; a compressing mechanism provided in the shell, and having a compression chamber where refrigerant is compressed and a discharge port from which the refrigerant compressed in the compression chamber is discharged; and a discharge-valve mechanism provided in a discharge chamber provided between the shell and the compressing mechanism. The discharge-valve mechanism opens and closes the discharge port. The discharge-valve mechanism includes: a valve seat attached to the compressing mechanism and having a valve-seat hole communicating with the discharge port; and a reed valve having a fixed end attached to the compressing mechanism and a distal end as a free end. The reed valve closes the valve seat when the reed valve is located on the valve seat. The valve seat is formed of material having a longitudinal elastic modulus lower than a longitudinal elastic modulus of the compressing mechanism.

Abstract: A masterbatch manufacturing method comprises an operation in which rubber latex and a carbon black slurry containing a compound according to Formula (I), below, are mixed. At Formula (I), R1 and R2 each indicates a hydrogen atom, an alkyl group having 1 to 20 carbons, an alkenyl group having 1 to 20 carbons, or an alkynyl group having 1 to 20 carbons. R1 and R2 may be the same or different. M+ indicates sodium ion, potassium ion, or lithium ion.

Abstract: Provided is an electrostatic capacitance detection device including: an electrode pair including a pair of electrodes, the electrode pair being arranged inside a compressor configured to compress refrigerant; a capacitor being connected in series to the electrode pair; an inverter having one of power lines connected to one end of series-connected electrode pair and capacitor, and is configured to drive the compressor, the power lines being used for driving the compressor; and a voltage detecting unit configured to measure a voltage between the pair of electrodes of the electrode pair.

Abstract: A scroll compressor includes a shell, a fixed scroll and an orbiting scroll disposed in the shell, a first scroll wrap and a second scroll wrap that are provided in the fixed scroll and the orbiting scroll, respectively, and that are engaged with each other to form a plurality of compression chambers, a crankshaft that causes the orbiting scroll to perform eccentric revolving motion, a tip seal member that is inserted in the tip of the second scroll wrap along the spiral direction and that is in sliding contact with the first baseplate of the fixed scroll, and injection ports that are provided through the first baseplate of the fixed scroll and that introduce refrigerant at an intermediate pressure between suction pressure and discharge pressure into the compression chambers from the outside of the shell.

Abstract: A scroll compressor includes an orbiting scroll, a fixed scroll, and a shell. The fixed scroll is configured to form a compression chamber together with the orbiting scroll. The shell accommodates the orbiting scroll and the fixed scroll. The fixed scroll includes a base plate and a scroll body. The base plate is fixed to the shell. The scroll body projects from the base plate toward the orbiting scroll. The base plate has a stress absorber that is formed outside the scroll body in a radial direction and that is configured to absorb stress from an outer region in the radial direction. A weld joint is formed in an overlap region where the shell and the base plate are fixed to each other and overlap each other. The stress absorber is provided on a line that passes through a center of the base plate and the weld joint.

Abstract: A scroll compressor includes a frame holding an orbiting scroll configured to slide, a fixed scroll configured to form a compression chamber together with the orbiting scroll, and a shell accommodating the frame and the fixed scroll. The shell includes a first inner wall surface and a first protrusion protruding from the first inner wall surface to position the fixed scroll, and the fixed scroll is fixed to the first inner wall surface.

Abstract: A compressor includes a compression mechanism that compresses refrigerant; a main shaft that transmits a rotational driving force to the compression mechanism; a balance weight provided below the compression mechanism and integrated with the main shaft, the balance weight having a cylindrical outer peripheral surface centered at the main shaft; and an oil sump portion provided below the balance weight and stores lubricating oil to be supplied to the compression mechanism. The balance weight has an annular oil-receiving recessed portion in an upper surface, the oil-receiving recessed portion being centered at the main shaft and integrated with the balance weight. The balance weight has a hollow portion in a lower surface, the hollow portion extending in part of the lower surface in a peripheral direction around the main shaft and being integrated with the balance weight. The oil-receiving recessed portion communicates with at least part of the hollow portion.

Abstract: A method for producing a wet rubber comprises a step (I) of dispersing the filler into the dispersing solvent, and adding, at the time of the dispersing, at least one portion of the rubber latex solution to the dispersing solvent to produce a slurry solution containing the filler to which particles of the rubber latex adhere, a step (II) of mixing the slurry solution containing the filler, to which the rubber latex particles adhere, with the rest of the rubber latex solution to produce a rubber latex solution containing the filler, to which the rubber latex particles adhere, and a step (III) of solidifying and drying the rubber latex solution containing the filler. About the filler, the ratio of the nitrogen adsorption specific surface area (N2SA) thereof to the iodine adsorption amount (IA) thereof ((N2SA)/(IA)) is 1.00 or more.

Abstract: Provided is an electrostatic capacitance detection device including: an electrode pair including a pair of electrodes, the electrode pair being arranged inside a compressor configured to compress refrigerant; a capacitor being connected in series to the electrode pair; an inverter having one of power lines connected to one end of series-connected electrode pair and capacitor, and is configured to drive the compressor, the power lines being used for driving the compressor; and a voltage detecting unit configured to measure a voltage between the pair of electrodes of the electrode pair.