| 摘要 |
<p>A thermostatic mixing valve for a hydraulic circuit comprises a valve body (2) provided with a first connection (3) for the entry of a first flow (F1) of a fluid in a first direction (X1), a second connection (4) connected to a valve body (2) for the entry of a second flow (F2) of fluid in a second direction (X2) arranged transversely to the first direction (X1); a third connection (5) for the exit of a third flow (F3) of mixed fluid, in a third direction (X3) that is transverse to the second direction (X2); a plug element (6) that is slidable inside a housing cavity (7) defined between the valve body (2) and the second connection (4), and on which passage opening means (8) is obtained for the first (F1) and second (F2) flow; a closing portion (9) cooperating with the passage opening means (8) to define a first passage port (P1) for the first flow (F1) and a second passage port (P2) for the second flow (F2) of fluid; thermostatic actuating means (10) and counteracting elastic means (11) arranged for driving the plug element (6) and varying in a controlled manner the first (P1) and second (P2) passage port so as to maintain constant, at a desired value, the temperature of the third flow (F3) of fluid. The plug element (6) comprises a tubular body (12) bounded externally by a cylindrical surface (13) on which the passage opening means (8) is circumferally obtained, and the closing portion is defined by an annular closing sealing element (9) housed in a seat (18) defined between the valve body (2) and the second connection (4) and projecting radially so as to intercept the passage opening means (8) for the fluid.</p> |
