US 12,270,483 B2
Device for controlling a flow rate and expanding a fluid in a fluid circuit and method for operating the device
Carsten Ohrem, Bergheim (DE); Daniel Zens, Kreuzau (DE); and Gregor Dünnwald, Erftstadt (DE)
Assigned to HANON SYSTEMS, Daejeon (KR)
Appl. No. 17/755,850
Filed by Hanon Systems, Daejeon (KR)
PCT Filed Nov. 12, 2020, PCT No. PCT/KR2020/015838
§ 371(c)(1), (2) Date May 10, 2022,
PCT Pub. No. WO2021/125566, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 10 2019 134 524.3 (DE), filed on Dec. 16, 2019.
Prior Publication US 2022/0403941 A1, Dec. 22, 2022
Int. Cl. F16K 3/24 (2006.01); F16K 3/314 (2006.01); F25B 41/35 (2021.01)
CPC F16K 3/314 (2013.01) [F16K 3/24 (2013.01); F25B 41/35 (2021.01)] 24 Claims
OG exemplary drawing
 
1. A device for controlling a flow rate and expanding a fluid in a fluid circuit, comprising:
an enclosure; and
a valve element arranged in an interior of the enclosure, which is arranged moveably in a linear movement in a direction of a longitudinal axis relative to the enclosure, wherein the valve element has a sealing surface and a control area that is formed at a first end face of the valve element and arranged adjacent to the sealing surface in an axial direction, wherein:
the sealing surface has a shape of a lateral surface of a straight circular cylinder with a constant outer diameter and an outer diameter of a surface of the control area corresponds to an outer diameter of the sealing surface, and
the control area has throughflow apertures and at least one control aperture, the valve element in the control area being formed with a hollow circular cylindrical-shaped wall, wherein the at least one control aperture has a shape of a cut which, starting from the first end face of the valve element, is formed extending in the axial direction into the wall of the valve element, wherein the at least one control aperture in a longitudinal extension has a first section and a second section, wherein the at least one control aperture in the first section is formed with a fully perforated wall of the valve element and in the second section with a steadily increasing wall thickness of the wall of the valve element and a groove base.