The invention relates to an expansion device for refrigeration apparatuses, comprising a suction tube (1) and a capillary tube (2) in a single extruded aluminum profile, in which the two parallel tubes, referred to as the suction tube (1) and the capillary tube (2), are linked together by a wall portion in the manner of a connection (3), in which said connection-shaped wall (3) can thus be cut to a sufficient desired length to release the ends of the suction tube (1) and of the capillary tube (2) at both tips or just one tip of the device, logically so that said tips can be handled and adapted to suit each project.

A refrigerating system may include a compressor configured to compress a non-azeotropic mixed refrigerant, a condenser configured to condense the compressed non-azeotropic mixed refrigerant, a three-way valve configured to branch the non-azeotropic mixed refrigerant condensed by the condenser, a first evaporator configured to supply cold air to a first interior space, a second evaporator configured to supply cold air to a second interior space at a temperature higher than at a temperature of the first interior space, and a capillary tube configured to expand the non-azeotropic mixed refrigerant branched by the three-way valve and supply the expanded non-azeotropic mixed refrigerant to at least one of the first evaporator or the second evaporator. With such features, a high-efficiency refrigerating system to which the non-azeotropic mixed refrigerant is applied may be implemented.

A refrigerating apparatus may include a main body having an interior space in which an article is accommodated, a door configured to open and close an opening of the main body, a compressor configured to compress a non-azeotropic mixed refrigerant, a condenser configured to condense the compressed non-azeotropic mixed refrigerant, a hotline provided at a contact portion between the main body and the door through which the condensed non-azeotropic mixed refrigerant flows, an expander configured to expand the non-azeotropic mixed refrigerant, heat of which is radiated by the hotline, and an evaporator configured to evaporate the expanded non-azeotropic mixed refrigerant to supply cold air to the interior space. According to such structure, even when the non-azeotropic mixed refrigerant is used, a function of the hotline to prevent dew formation may be normally performed with hot refrigerant.

An appliance includes a compact condenser assembly formed with at least two separately and independently produced wire on tube condensers. Each of the at least two wire on tube condensers has a condenser inlet and a condenser outlet. The at least two wire on tube condensers are at least substantially locked and positioned in a matingly engaged configuration forming a compact condenser assembly. The at least two wire on tube condensers are configured to be operationally connected in at least one of a parallel configuration, a series configuration, a selectable configuration, and a bypass configuration.

A method of forming a refrigeration heat exchanger comprising a suction line and a capillary line includes juxtaposing at least a portion of the suction and capillary lines to form a juxtaposed portion, at least partially enveloping the juxtaposed portion with a metal material, and encapsulating the capillary line to the suction line along at least a portion of the juxtaposed portion.

A system and method for gas compression. The system comprises a compressor chamber, a gas heating device, and a gradational heat transfer conduit. The method comprises heating gas in the gas heating device, ejecting gas from the gas heating device to the gradational heat transfer conduit, cooling the gas as it passes through the gradational heat transfer conduit, and transferring the gas from the gradational heat transfer conduit to the compressor chamber. The system additionally may comprise means for promoting unidirectional gas flow, a pressure transfer device for maintaining gas pressure during transfer to the compressor chamber, and various additional components for heating gas with the gas heating device.

An appliance includes a refrigeration compartment that is defined by a plurality of interior walls. A freezer compartment is positioned proximate to the refrigeration compartment. A compressor is positioned proximate to at least one of the refrigeration compartment and the freezer compartment. A first evaporator is operably coupled to the compressor. A suction line is operably coupled to the first evaporator and is configured to convey refrigerant from the first evaporator toward the compressor. The suction line includes a suction line looping portion that generally defines an inner suction line loop and an outer suction line loop. A capillary tube is operably coupled to the first evaporator and is configured to convey refrigerant to the first evaporator. The capillary tube is configured to contact the suction line looping portion, such that heat from the capillary tube is transferred to the suction line.

A valve structure that may control the flow rate of a fluid when the fluid starts to be released is provided. In a valve structure including a valve sheet having two outlets to release a fluid and a valve body arranged to be rotational against the valve sheet to regulate a degree of opening of the outlet, the valve body has a fluid control recess formed in the circumferential direction whose area overlapping the outlet is changed by rotation of the valve body, and the center of the outlet is forced to deviate from a rotation trajectory of a front end portion of the fluid control recess that starts to overlap the outlet by the rotation of the valve body.

A refrigerator having an improved structure that enhances the cooling efficiency. The refrigerator includes a main body, a storage compartment formed inside the main body, and a cold air supplier to supply cold air to the storage compartment, the cold air supplier including a compressor compressing a refrigerant, a condenser condensing the compressed refrigerant, a decompressor expanding the condensed refrigerant, an evaporator disposed at a rear of the storage compartment to evaporate the expanded refrigerant, and a refrigerant moving tube connecting the evaporator to the compressor through which the evaporated refrigerant is moved to the compressor so that the refrigerant is recirculated, wherein the evaporator includes a case, a refrigerant tube disposed inside the case such that the refrigerant introduced into the evaporator flows therethrough, and connected to the refrigerant moving tube at an inside of the case, and a heat insulating material filling the inside of the case to cover where the refrigerant tube and the refrigerant moving tube are connected to each other.

A method for controlling a refrigerating system using a non-azeotropic mixed refrigerant is provided. The refrigerating system may include a first evaporator configured to supply cold air to a freezer compartment located upstream and a second evaporator configured to supply cold air to a refrigerating compartment located downstream, based on a flow direction of the non-azeotropic mixed refrigerant. The method may include a first operation comprising operating a compressor, a freezer compartment fan to blow air to the first evaporator, and a refrigerating compartment fan to blow air to the second evaporator; a second operation comprising when the freezer compartment reaches a target temperature or the refrigerating compartment reaches a target temperature, continuously operating the compressor, and stopping the freezer compartment fan or the refrigerating compartment fan corresponding to one of the freezer compartment or the refrigerating compartment that reaches the target temperature; and a third operation comprising when both the freezer compartment and the refrigerating compartment reach the target temperatures, turning off both of the refrigerating compartment fan and the freezer compartment fan and stopping the compressor.