Abstract: A task to be achieved by the present invention is to provide an ink which can form a printed image or the like having color fastness to water at a level where the image will not be removed from the recording medium even when, for example, washed with water, warm water, or the like. Further, another task to be achieved by the invention is to provide an ink which can form a printed image or the like which is unlikely to suffer from color fading even when, for example, washed by an ultrasonic cleaning method or the like that is used for cleaning a stain strongly deposited on clothes or the like. The present invention is directed to an ink containing a polymer (A) having a predetermined structure (a1).

Abstract: An accumulator that is used in a refrigeration apparatus including a plurality of compressors and is provided for the plurality of compressors, the accumulator including an inlet pipe that penetrates a cylindrical container perpendicularly to a central axis of the cylindrical container and conveys gas-liquid mixed refrigerant into the container and a plurality of outlet pipes connected to respective suction sides of the plurality of compressors, wherein the plurality of outlet pipes each have one end located in the container and forming outlet port for conveying gas refrigerant in the container toward the plurality of compressors, and wherein the outlet port of each of the plurality of outlet pipes is concentrated in a central part of the container.

Abstract: A refrigeration apparatus includes a compressor receiving refrigerant through an injection pipe and of discharging the refrigerant, a condenser, an electronic expansion valve connected by piping to another end of the injection pipe, a subcooling coil, a solenoid valve configured to control inflowing of the refrigerant through the injection pipe into the compressor, an injection bypass pipe connecting the injection pipe and a pipe on a suction side of the compressor, a solenoid valve configured to control passage of the refrigerant flowing through the injection bypass pipe, a high-low pressure bypass pipe connecting a pipe on a discharge side of the compressor and the pipe on the suction side of the compressor, a solenoid valve configured to control passage of the refrigerant through the high-low pressure bypass pipe, and a controller configured to control a frequency of the compressor and opening and closing of each of the solenoid valves.

Abstract: An accumulator that is used in a refrigeration apparatus including a plurality of compressors and is provided for the plurality of compressors, the accumulator including an inlet pipe that penetrates a cylindrical container perpendicularly to a central axis of the cylindrical container and conveys gas-liquid mixed refrigerant into the container and a plurality of outlet pipes connected to respective suction sides of the plurality of compressors, wherein the plurality of outlet pipes each have one end located in the container and forming outlet port for conveying gas refrigerant in the container toward the plurality of compressors, and wherein the outlet port of each of the plurality of outlet pipes is concentrated in a central part of the container.

Abstract: A refrigeration apparatus includes a compressor receiving refrigerant through an injection pipe and of discharging the refrigerant, a condenser, an electronic expansion valve connected by piping to another end of the injection pipe, a subcooling coil, a solenoid valve configured to control inflowing of the refrigerant through the injection pipe into the compressor, an injection bypass pipe connecting the injection pipe and a pipe on a suction side of the compressor, a solenoid valve configured to control passage of the refrigerant flowing through the injection bypass pipe, a high-low pressure bypass pipe connecting a pipe on a discharge side of the compressor and the pipe on the suction side of the compressor, a solenoid valve configured to control passage of the refrigerant through the high-low pressure bypass pipe, and a controller configured to control a frequency of the compressor and opening and closing of each of the solenoid valves.