EXPANSION VALVE WITH VARIABLE OPENING DEGREE
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United States of America Patent
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app pub date -
Sep 30, 2015
filing date -
Nov 30, 2010
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Abandoned
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Abstract
An expansion valve (4) for a vapour compression system (1), and a vapour compression system comprising such an expansion valve (4) are disclosed. The expansion valve (4) comprises a first valve member (7) and a second valve member (8). The first valve member (7) and the second valve member (8) are arranged movably relative to each other, and the relative position of the first valve member (7) and the second valve member (8) determines an opening degree of the expansion valve (4). The first valve member (7) and/or the second valve member (8) is/are automatically movable in response to changes in a differential pressure across the expansion valve (4), the opening degree of the expansion valve (4) thereby being automatically altered in response to changes in the differential pressure across the expansion valve (4). It is ensured that the opening degree of the expansion valve is automatically adjusted to the actual operating conditions, thereby optimising the efficiency of the vapour compression system. Furthermore, this is obtained in a simple manner, without requiring complicated control of the valve.
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