A plug-in device for a cylinder of a condenser, this plug-in device comprising: a plug designed to plug, preferably removably, an opening of the cylinder, a functional component designed to interact with a refrigerant fluid in the cylinder, this functional component being designed to be mounted, removably or non-removably, on the plug with the possibility of rotating with respect to this plug.

A transcritical R-744 refrigeration system, especially used for refrigerating a skating rink, has a heat exchanger between the gas cooler followed by a throttling device and the flash tank (or receiver), in order to eliminate the need of a flash-gas bypass. The heat exchanger connects to an external mechanical refrigeration system operating at a higher evaporating temperature than the transcritical R-744 refrigeration system, and generally totally condenses the vapor of the R-744 refrigerant before it reaches the flask tank. A method for improving the energy efficiency of the transcritical R-744 refrigeration system is also disclosed.

A receiver includes a large diameter main body portion, and an intermediate member side small diameter portion. A wall thickness of the intermediate member side small diameter portion is smaller than a wall thickness of the main body portion. As a result, heat capacity of the intermediate member side small diameter portion is reduced. As a result, it is possible to complete brazing between the intermediate member side small diameter portion and the intermediate member, at the same time as brazing among tanks, tubes, and fins. A desiccant enclosed in a flexible bag can be taken in and out through the intermediate member side small diameter portion.

A receiver drier assembly for an automotive heat exchanger is provided with a single-piece cap. In embodiments described herein, a modulator has a tubular wall and one or more openings are formed therein. The cap is a single-piece cap and is configured to attach directly to the tubular wall via a snap fit. The cap may have a protrusion that is configured to snap into engagement with the opening in the modulator when properly assembled. The protrusion may be tapered such that as the cap is assembled to the modulator, the protrusion is forced radially inwardly via the tapered surface sliding along the tubular wall. Once the protrusion meets the opening, the protrusion is allowed to flex radially outward toward its natural unbiased position, snap fitting with the opening of the tubular wall.

A receiver dryer includes a first body and a second body, one end of the second body away from the first body defining first and second connecting ports. The receiver dryer includes a filter cartridge including a first mating portion, a second mating portion, and a filter part at a middle portion; the first mating portion fits with an inner wall of the second body, one space allowing refrigerant to flow is formed between the filter part and the inner wall of the second body, the second mating portion is connected to the second connecting port, the space between the filter part and the inner wall of the second body communicates with the first connecting port, an inside of the filter part communicates with the second connecting port via the second mating portion, and refrigerant is filtered at least once when flowing between the first and second connecting ports.

A closure plug for a collector of a refrigerant circuit with a substantially cylindrical base body with a circumferential wall, wherein a first circumferential groove, in which an O-ring is arranged, is provided in the circumferential wall, wherein an elastomer ring is injection molded onto the circumferential wall at an axial distance from the first circumferential groove.

A refrigerator cooling system, comprising a pipe forming a loop and, sequentially provided on the pipe, a compressor, a condenser, a refrigerant amount regulator, a capillary tube, and an evaporator. The refrigerant amount regulator comprises a storage device and an adjustor provided within the storage device. The storage device is provided therein with a storage cavity for holding a refrigerant. The storage device is provided with an opening for the storage cavity to be in communication with the pipe. The adjustor comprises a sealer used for opening or closing the opening.

A liquid reservoir, a method for manufacturing the liquid reservoir, and a compressor having the liquid reservoir are disclosed. The liquid reservoir has a barrel, an air inlet tube, an air outlet tube, and a valve. The valve has a partition plate arranged in the barrel. An outer periphery of the partition plate is coupled to an inner peripheral wall of the barrel to divide the internal space of the barrel into an air inlet chamber and an air outlet chamber. The partition plate has a valve hole communicating the air inlet chamber with the air outlet chamber. A limit plate is arranged in the air outlet chamber and at least partially spaced apart from the partition plate. An outer periphery of the limit plate is coupled to the inner peripheral wall of the barrel. The limit plate has a connection hole and a guide hole.

A receiver drier assembly for an automotive heat exchanger is provided with a single-piece cap. In embodiments described herein, a modulator has a tubular wall and one or more openings are formed therein. The cap is a single-piece cap and is configured to attach directly to the tubular wall via a snap fit. The cap may have a protrusion that is configured to snap into engagement with the opening in the modulator when properly assembled. The protrusion may be tapered such that as the cap is assembled to the modulator, the protrusion is forced radially inwardly via the tapered surface sliding along the tubular wall. Once the protrusion meets the opening, the protrusion is allowed to flex radially outward toward its natural unbiased position, snap fitting with the opening of the tubular wall.

A stopper includes a filtering unit that is housed in an interior of a liquid receiver main body and through which a refrigerant passes, a fixed portion that includes on an outer peripheral face thereof a screw portion that is screwed into an inner peripheral face of the liquid receiver main body, a sealing member that is brought into contact with the inner peripheral face of the liquid receiver main body, thereby preventing a leakage of a refrigerant to the fixed portion from between the filtering unit and the liquid receiver main body, and a movable connection portion that is provided between the filtering unit and the fixed portion and links the filtering unit to the fixed portion in such a way that the filtering unit is not caused to follow a rotation of the fixed portion, and in such a way that the filtering unit is caused to follow an axial direction movement of the fixed portion.