| 摘要 |
PURPOSE: To perform more accurate superheat control by providing an inlet, an outlet, and an internal conduction passage of refrigerant, providing a heat conducting material at least on a part of the wall of the passage and detecting inner temperature through the wall part. CONSTITUTION: The apparatus 48 is made of a highly conductive material and provided with a first inner tubular pipe 62 having one end formed with a flange for constituting a flow-in port 46 and the other closed end 64. A second large diameter outer tubular pipe 66 surrounds the first inner pipe coaxially. The inner pipe is filled with a spiral coil 67 made of an open mesh material and provided with a plurality of holes 68 arranged uniformly along the length and circumferential edge of the pipe. Refrigerant vapor and liquid flowing in through the flow-in port 46 is delivered forcibly to the inner wall of the outer pipe 66. Refrigerant flows are mixed by combining turbulences in an annular chamber 70 between two pipes and thereby different temperatures are averaged entirely and an evaporation valve is controlled according to the detected temperature.
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