Refrigerating cycle and component assembly for the same
a technology of refrigerating cycle and component assembly, which is applied in the direction of indirect heat exchangers, lighting and heating apparatus, transportation and packaging, etc., can solve the problems of limited position of refrigerant inlet and outlet portions of radiators, and achieve the effect of improving assembly
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first embodiment
[0027]A first embodiment will be described with reference to FIGS. 1 to 4. In the first embodiment, a refrigerating cycle is for example employed as a supercritical vapor compression refrigerating cycle for a vehicle air conditioner in which carbon dioxide is used as a refrigerant (heat exchange medium). Alternatively, ethylene, ethane, nitrogen oxide or the like can be used as the refrigerant. Further, when an air conditioning load is high such as in summer, pressure of a high pressure refrigerant discharged from a compressor is increased equal to or higher than a critical pressure to thereby provide predetermined cooling (refrigerating) capacity.
[0028]The refrigerating cycle generally includes a compressor 10, a gas cooler 100 as a high pressure-side heat exchanger, a decompressing device 300, an internal heat exchanger 200, an evaporator 400 as a low pressure-side heat exchanger, and an accumulator 500 as a gas-liquid separator. Further, the gas cooler 100, the internal heat exch...
second embodiment
[0082]A second embodiment will be described with reference to FIG. 5. In the second embodiment, the decompressing device 300 is constructed of a box-type expansion valve 300B, instead of the capillary-type expansion valve 300A of the first embodiment. The box-type expansion valve 300B includes a main body that has a first refrigerant passage and a second refrigerant passage therein. The box-type expansion valve 300B includes the temperature sensing part in the first refrigerant passage, and a decompressing part in communication with the second refrigerant passage.
[0083]In this embodiment, the expansion valve 300B is disposed such that the high pressure refrigerant, which has been discharged from the gas cooler 100 and flows toward the high pressure refrigerant inlet portion 202 of the internal heat exchanger 200, passes through the first refrigerant passage of the main body. Namely, an inlet of the first refrigerant passage is connected to an end of the first refrigerant pipe P1 and...
third embodiment
[0085]A third embodiment will be described with reference to FIGS. 6A and 6B. In this embodiment, the fourth refrigerant pipe P4 is arranged to extend upstream side of the gas cooler 100 with respect to the flow of the cooling air A1, i.e., in front of the gas cooler 100, as the low pressure refrigerant passage part. Preferably, the fourth refrigerant pipe P4 is arranged at the position corresponding to the last path of the refrigerant flow in the gas cooler 100.
[0086]The fourth refrigerant pipe P4 is for example made of metal and connected such that the low pressure refrigerant discharged from the accumulator 500 is introduced into the low pressure refrigerant passages 200b of the internal heat exchanger 200. Since the fourth refrigerant pipe P4 is arranged upstream of the gas cooler 100 with respect to the air flow direction, the air to be introduced toward the gas cooler 100 is cooled by the low pressure refrigerant flowing in the fourth refrigerant pipe P4.
[0087]Further, the sec...
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