US 12,241,559 B2
Pressure compensation element
Bernd Armin Schanzenbach, Mainhardt Geisselhardt (DE); and Susanne Luz, Waiblingen (DE)
Assigned to STEGO HOLDING GMBH, Schwäbisch Hall (DE)
Appl. No. 18/037,382
Filed by STEGO HOLDING GMBH, Schwäbisch Hall (DE)
PCT Filed Nov. 12, 2021, PCT No. PCT/EP2021/081511
§ 371(c)(1), (2) Date May 17, 2023,
PCT Pub. No. WO2022/106310, PCT Pub. Date May 27, 2022.
Claims priority of application No. 10 2020 130 303.3 (DE), filed on Nov. 17, 2020; and application No. 10 2020 131 994.0 (DE), filed on Dec. 2, 2020.
Prior Publication US 2023/0407983 A1, Dec. 21, 2023
Int. Cl. F16K 24/04 (2006.01); F16K 17/18 (2006.01)
CPC F16K 17/18 (2013.01) [F16K 24/04 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A pressure compensation element for installation in a housing wall, comprising:
a base part, the base part formed to define a nozzle extending along an axis of a gas flow direction; and
a cover part arranged on the base part,
wherein at least one gas exchange channel, in which a gas-permeable membrane is arranged, is provided in the pressure compensation element centrally with respect to the axis of the gas flow direction,
wherein the base part has, in the gas exchange channel or at an end of the gas exchange channel, a retaining grid facing the cover part and on which the gas-permeable membrane is arranged, and wherein the base part has on an outside thereof a circumferential annular flange through which gas exchange openings lead,
wherein the base part has on its nozzle at least two groups of radially outwardly facing locking elements, wherein the locking elements of a respective group have a uniform height along the nozzle that is different from a height along the nozzle of the locking elements of other respective groups of the at least two groups,
wherein
i) the base part is further formed to define a collar, the nozzle opens into the collar, the cover part defines an annular wall that is turned over the circumferential annular flange extending around an outside of the collar of the base part and forms a circumferential gap with the outside of the collar of the base part between an inner surface of the cover part and the circumferential annular flange;
ii) the cover part is formed to define spacer elements in an interior of the cover part, the spacer elements are configured, together with an upper edge of the base part, to form a gap between the inner surface of the cover part and the upper edge of the base part, the spacer elements are arranged in a circle; and
iii) the gas exchange openings are arranged in the circumferential annular flange, wherein elements i), ii), and iii) together form a labyrinthine structure.