Expansion Valve

摘要

An expansion valve relating to the field of air conditioning technology. The present expansion valve comprises a housing, a cylindrical valve body with an inner cavity fixed inside the housing. In the inner cavity, there is a matched set of the first valve core and the second valve core sliding along it. A retaining ring is fixed in the inner cavity between the two valve cores. At both ends of the inner cavity there are spring assemblies driving the valve cores towards the retaining ring. A damping structure is also installed between the first valve core and the second valve core. In this manner, a cushioning effect is provided when the first valve core approaches the second valve core, which lightens the impacts to valve cores and thereby extend the service life of the expansion valve.

主权项

1. An expansion valve comprising:
a housing (10) with an inlet end (101) and an outlet end (102); a cylindrical valve body (1) with an inner cavity fixed inside the housing (10); an inlet (11) and an outlet (12) provided on a side wall of the valve body (1), connecting the inner cavity and the housing (10); a spacer sleeve (8) between the housing (10) and valve body (1) that separates the inlet (11) and outlet (12); a matched pair of a first valve core (2) and a second valve core (3) capable of sliding along an interior of inner cavity; a retaining ring (7) fixed to a mid-section of the inner cavity between the first valve core (2) and the second valve core (3); spring assemblies at both ends of the inner cavity, pressing the first valve core (2) and the second valve core (3) towards the retaining ring (7); and a damping structure provided between the first valve core (2) and the second valve core (3), which provides a cushioning effect.