Abstract: A liquid receiver of a condenser has a liquid receiver main body and a plug removably fitted thereinto. The liquid receiver main body has a refrigerant inflow hole into which refrigerant flows from a condensation section and a refrigerant outflow hole from which refrigerant flows into a supercooling section. The liquid receiver has a first space formed above the upper end of the plug and communicating with the refrigerant inflow hole and a second space formed below the upper end of the plug and communicating with the refrigerant outflow hole. The plug has a flow passage which is open to the first space and the second space at opposite ends. The first-space-side opening of the flow passage is located below the refrigerant inflow hole. The flow passage has a throttle portion whose cross-sectional area is smaller than a hole area of the refrigerant inflow hole.

Abstract: A liquid receiver is composed of a tubular base member having open upper and lower ends, a tubular tank member having a closed upper end and an open lower end and joined to the base member, and a plug fitted into the base member. A female screw is provided on the inner circumferential surface of the base member, and refrigerant inflow and outflow holes are formed in a portion of the base member above the female screw such that the former is located above the latter. A male screw to be screwed into the female screw is provided on the outer circumferential surface of the plug to be located below the refrigerant outflow hole. Sealing is established between a portion of the inner circumferential surface of the base member located below the female screw and a portion of the outer circumferential surface of the plug located below the male screw.

Abstract: A liquid receiver of a condenser has a liquid receiver main body and a plug removably fitted thereinto. The liquid receiver main body has a refrigerant inflow hole into which refrigerant flows from a condensation section and a refrigerant outflow hole from which refrigerant flows into a supercooling section. The liquid receiver has a first space formed above the upper end of the plug and communicating with the refrigerant inflow hole and a second space formed below the upper end of the plug and communicating with the refrigerant outflow hole. The plug has a flow passage which is open to the first space and the second space at opposite ends. The first-space-side opening of the flow passage is located below the refrigerant inflow hole. The flow passage has a throttle portion whose cross-sectional area is smaller than a hole area of the refrigerant inflow hole.

Abstract: A condenser includes a condensation section, a super-cooling section, and a liquid receiving section. Refrigerant from heat exchange tubes of a first heat exchange path of the condensation section flows into those of a second heat exchange path through the liquid receiving section. The liquid receiving section includes a first space for receiving refrigerant from the heat exchange tubes of the first heat exchange path, a second space which is located above the first space and in which refrigerant from the first space is separated into gaseous and liquid phases, and a third space which is located below the first space, which receives refrigerant from the second space, and from which refrigerant flows to the heat exchange tubes of the second heat exchange path. A first partition member between the first space and the second space has a throttle for refrigerant flowing from the first space into the second space.

Abstract: A liquid receiver is composed of a tubular base member having open upper and lower ends, a tubular tank member having a closed upper end and an open lower end and joined to the base member, and a plug fitted into the base member. A female screw is provided on the inner circumferential surface of the base member, and refrigerant inflow and outflow holes are formed in a portion of the base member above the female screw such that the former is located above the latter. A male screw to be screwed into the female screw is provided on the outer circumferential surface of the plug to be located below the refrigerant outflow hole. Sealing is established between a portion of the inner circumferential surface of the base member located below the female screw and a portion of the outer circumferential surface of the plug located below the male screw.

Abstract: A condenser includes a condensation section, a super-cooling section, and a liquid receiving section. Refrigerant from heat exchange tubes of a first heat exchange path of the condensation section flows into those of a second heat exchange path through the liquid receiving section. The liquid receiving section includes a first space for receiving refrigerant from the heat exchange tubes of the first heat exchange path, a second space which is located above the first space and in which refrigerant from the first space is separated into gaseous and liquid phases, and a third space which is located below the first space, which receives refrigerant from the second space, and from which refrigerant flows to the heat exchange tubes of the second heat exchange path. A first partition member between the first space and the second space has a throttle for refrigerant flowing from the first space into the second space.

Abstract: An intermediate heat exchanger 10 includes a double tube 11 and a liquid reservoir 14. The double tube 11 has an outer tube 15 and an inner tube 16 disposed inside the outer tube 15 with a clearance formed therebetween. The clearance between the outer tube 15 and the inner tube serves as a high-temperature-side refrigerant passage 12, through which refrigerant of high pressure flowing out of a condenser flows, and the interior of the inner tube 16 serves as a low-temperature-side refrigerant passage 13, through which refrigerant of low pressure flowing out of an evaporator flows. The liquid reservoir 14, which communicates with the high-temperature-side refrigerant passage 12 of the double tube 11, stores the refrigerant of high pressure flowing out of the condenser before the pressure of the refrigerant is reduced by a pressure reducer, and separate liquid-phase refrigerant and gas-phase refrigerant.

Abstract: An intermediate heat exchanger 10 includes a double tube 11 and a liquid reservoir 14. The double tube 11 has an outer tube 15 and an inner tube 16 disposed inside the outer tube 15 with a clearance formed therebetween. The clearance between the outer tube 15 and the inner tube serves as a high-temperature-side refrigerant passage 12, through which refrigerant of high pressure flowing out of a condenser flows, and the interior of the inner tube 16 serves as a low-temperature-side refrigerant passage 13, through which refrigerant of low pressure flowing out of an evaporator flows. The liquid reservoir 14, which communicates with the high-temperature-side refrigerant passage 12 of the double tube 11, stores the refrigerant of high pressure flowing out of the condenser before the pressure of the refrigerant is reduced by a pressure reducer, and separate liquid-phase refrigerant and gas-phase refrigerant.

Abstract: A method of manufacturing a brazed pipe comprises steps A to D. In the step A, on an upper surface of the right-hand side edge portion of a material plate 20 having a brazing material layer over opposite surfaces thereof, a first slant surface 21 is formed such that it inclines from the upper side toward the lower side while approaching the right end, and a first flat surface 22 is formed between the first slant surface 21 and the lower surface. In the step B, on a lower surface of the left-hand side edge portion of the material plate 20, a second slant surface 24 is formed such that it inclines from the lower side toward the upper side while approaching the left end, and a second flat surface 25 is formed between the second slant surface 24 and the lower surface.

Abstract: A flat tube includes a pair of upper and lower walls opposed to each other, two side walls interconnecting the upper and lower walls at left and right opposite side edges thereof, and a covering wall provided over the outer surface of the left side wall and brazed to the left side wall. The left side wall is made from a side wall forming portion projecting downward from the upper wall integrally therewith and a side wall forming portion projecting upward from the lower wall integrally therewith by brazing these portions as butted against each other. The covering wall is made by folding a covering wall forming portion formed by extending one side edge of the upper wall. The left side wall including the wall forming portion of the upper wall and the wall forming portion of the lower wall can be protected.