US 12,264,751 B2
Control valve
Bjarne Wittendorff Ibsen, Slagelse (DK); and Carsten Enøe Møller, Slagelse (DK)
Assigned to Flowcon International ApS, Slagelse (DK)
Appl. No. 18/717,714
Filed by Flowcon International ApS, Slagelse (DK)
PCT Filed Dec. 6, 2022, PCT No. PCT/DK2022/050267
§ 371(c)(1), (2) Date Jun. 7, 2024,
PCT Pub. No. WO2023/117002, PCT Pub. Date Jun. 29, 2023.
Claims priority of application No. 202170651 (DK), filed on Dec. 22, 2021; application No. 202170652 (DK), filed on Dec. 22, 2021; and application No. 202170653 (DK), filed on Dec. 22, 2021.
Prior Publication US 2025/0052336 A1, Feb. 13, 2025
Int. Cl. F16K 31/04 (2006.01); F16K 25/00 (2006.01)
CPC F16K 31/041 (2013.01) [F16K 25/005 (2013.01)] 31 Claims
OG exemplary drawing
 
1. A control valve (1) for regulating a water flow to or from a device in an HVAC system, such as a cooling or heating convector, said control valve comprising:
a valve body (2),
a shaft (15,25) rotationally suspended in said valve body (2) with a portion of said shaft (15,25) configured to be coupled to an actuator (180) for rotation about a valve axis X,
a first, radially directed, port (11,21),
a second, radially directed, port (12,22), and
a third, radially directed, port (13,23),
a first ceramic plate (16,26) and a second ceramic plate (17,27) mounted about said shaft (15,15′,15″) and in intimate contact with each other, the first ceramic plate (16,26) being held stationary against motion about the shaft (15,15′,15″), while the second ceramic plate (17,27) is coupled to the shaft (15,15′,15″) to rotate with the shaft (15,15′,15″) without introducing any rotation of the first ceramic plate (16,26),
said second ceramic plate (17,27) having one through-going opening or recess (33,43),
characterized by
said first ceramic plate (16,26) having a first through-going opening or recess (31,41) and a neighboring second through-going opening or recess (32,42), wherein the second ceramic plate (17,27) is rotatable:
to a first range of angular positions in which the first port (11, 21) is in fluid communication with the third port (13, 23) by the one through-going opening or recess (33,43) overlapping at least partially with said first through-going opening or recess (31,41), and
to a second range of angular positions in which the second port (12, 22) is in fluid communication with the third port (13, 23) by the one through-going opening or recess (33,43) overlapping at least partially with said second through-going opening or recess (32,42),
wherein said first range of angular positions does not overlap with said second range of angular positions.