BUBBLE-REMOVAL DEVICE, OUTDOOR HEAT-EXCHANGE DEVICE, AND REFRIGERATION/AIR-CONDITIONING SYSTEM

摘要

To provide a bubble-removal device capable of removing vacuum bubbles existing in a refrigerant from the refrigerant. A bubble-removal device 100 includes a main body 100a having a cylindrical barrel part 110a and end wall parts 110b, 110c that close both end parts of the barrel part 110a, and a pipe part extending along a center axis of the barrel part 110a, one end side of which is attached to the end wall part 110c, and the other end side of which is located inside the main body and extends toward the end wall part 110b, wherein in the main body 110, an opening H1 to introduce a refrigerant is formed and an inner surface of the barrel part 110a has a spiral groove 116 extending spirally relative to the center axis at least on the opening H1 side.