US 12,467,551 B2
Antifreeze valve device and plant using said device
Roberto Cimberio, Ameno Fraz. Vacciago (IT); Tiziano Guidetti, Borgomanero (IT); and Andrea Chiarello, Oleggio Castello (IT)
Assigned to CIMBERIO HOLDING S.R.L., Milan (IT)
Filed by CIMBERIO HOLDING S.R.L., Milan (IT)
Filed on Nov. 27, 2023, as Appl. No. 18/519,629.
Claims priority of application No. 102022000024654 (IT), filed on Nov. 30, 2022.
Prior Publication US 2024/0175510 A1, May 30, 2024
Int. Cl. F16K 31/00 (2006.01); E03B 7/10 (2006.01); E03B 7/12 (2006.01); F16K 27/02 (2006.01)
CPC F16K 31/002 (2013.01) [E03B 7/10 (2013.01); E03B 7/12 (2013.01); F16K 27/02 (2013.01)] 25 Claims
OG exemplary drawing
 
1. Antifreeze device for hydraulic plants including:
a manifold having a manifold inlet, a manifold outlet, and a channel placing the manifold inlet in fluid communication with the manifold outlet, said manifold including an auxiliary opening between the manifold inlet and the manifold outlet,
a valve body engaged to the manifold and comprising:
a valve inlet facing the auxiliary opening of the manifold,
a drain for discharging fluid in the environment,
a chamber placing the valve inlet of the valve body in fluid communication with the drain of the valve body,
a thermosensitive element housed in the chamber and sensitive to temperature variations,
a shutter engaged to the thermosensitive element and movable between:
a closed position where said shutter closes the auxiliary opening of the manifold,
an open position where said shutter allows fluid to enter through the auxiliary opening, wherein the manifold includes an orifice, distinct from the auxiliary opening and facing the valve inlet of the valve body, the orifice placing the chamber of the valve body in fluid communication with the channel of the manifold, wherein the drain is opposite to the valve inlet of the valve body.