| 摘要 |
<p>A regulating valve (10, 100, 200), particularly for regulating the flow of fluids in refrigeration systems, which comprises
- a valve body (11) that has an inlet (12) and an outlet (13) for fluid, which are connected by a connecting opening (14),
- a flow control device (15) for the opening (14), which is inserted in the valve body (11) and comprises a flow control piston (17, 117) for the connecting opening (14) that is driven by an electric motor (18) along a sliding axis (A), in a manner that can be modulated between an open position and a blocking position of the connecting opening (14). The flow control piston (17, 117) has
- openings (19) for connection between a front face (20) thereof, which is directed toward the connecting opening (14), and a rear face thereof (21) for balancing the pressures applied by the fluid to the front face (20),
- a head dome (22, 122, 222) that faces the connecting opening (14) and forms the front face (20), the connection openings (19) comprising a plurality of holes (23, 123, 223) that pass through the dome (22, 122, 222).</p> |
