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发明公开
CN108253161A 膨胀开关阀 无效 - 驳回

膨胀开关阀
摘要：
本公开提供了一种膨胀开关阀，包括阀体(500)，该阀体上形成有进口(501)、出口(502)以及连通在所述进口和所述出口之间的内部流道，所述内部流道上安装有相互平行的第一阀芯(503)和第二阀芯(504)，所述第一阀芯(503)使得所述进口和所述出口直接连通或断开连通，所述第二阀芯(504)使得所述进口和所述出口通过节流孔(505)连通或断开连通。这样，通过在同一阀体的内部流道上集成安装第一阀芯和第二阀芯，能够实现冷剂的通断控制或节流膨胀控制功能，结构简单，易于生产和安装，且当本公开提供的膨胀开关阀应用于热泵系统时，可以简化管路连接降低成本，并且减少整个热泵系统的制冷剂充注量，便于压缩机回油。
摘要（英）：

An expansion switching valve comprises a valve body (500). An inlet (501), an outlet (502), and an internal flow path communicating the inlet (501) and the outlet (502) are formed at the valve body (500). A first valve core (503) and a second valve core (504), which are parallel to each other, are installed at the internal flow path. The first valve core (503) allows or blocks direct communication between the inlet (501) and the outlet (502). The second valve core (504) allows or blocks communication between the inlet (501) and the outlet (502) by means of a flow restriction hole (505). Installation of the first valve core (503) and the second valve core (504) at the internal flow path in the same valve body (500) realizes blocking and flow control of a refrigerant or throttling expansion. The expansion switching valve has a simple structure and can be manufactured and installed easily. Applying the expansion switching valve in a heat pump system can simplify pipeline connection, and reduce a charge of refrigerant introduced into the entire heat pump system, thereby facilitating oil return to a compressor.

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