EXPANSION VALVE FOR A VAPOUR COMPRESSION SYSTEM WITH REVERSIBLE FLUID FLOW
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United States of America Patent
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Apr 10, 2014
app pub date -
Mar 8, 2012
filing date -
Mar 9, 2011
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Abstract
An expansion valve (16) for a vapour compression system (1) and a vapour compression system (1) are disclosed. The expansion valve (16) comprises a first valve member (17), a second valve member (20) and a third valve member (21), said valve members (17, 20, 21) being arranged in such a manner that relative movements at least between the first valve member (17) and the second valve member (20), and between the first valve member (17) and the third valve member (21) are possible. The expansion valve (16) is switchable between a first state in which an opening degree of the expansion valve (16) is determined by the relative position of the first valve member (17) and the second valve member (20), and a second state in which an opening degree of the expansion valve (16) is determined by the relative position of the first valve member (17) and the third valve member (21). The expansion valve (16) is automatically moved between the first state and the second state in response to a change in direction of fluid flow through the expansion valve (16).
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