US 12,292,129 B2
Diaphragm and diaphragm valve
Harald Haidt, Öhringen (DE)
Assigned to GEMÜ Gebr. Müller Apparatebau Gmbh & Co. Kommanditgesellschaft, Ingelfingen (DE)
Appl. No. 17/792,479
Filed by GEMÜ Gebr. Müller Apparatebau Gmbh & Co. Kommanditgesellschaft, Ingelfingen (DE)
PCT Filed Dec. 1, 2020, PCT No. PCT/EP2020/084149
§ 371(c)(1), (2) Date Jul. 13, 2022,
PCT Pub. No. WO2021/144060, PCT Pub. Date Jul. 22, 2021.
Claims priority of application No. 10 2020 100 744.2 (DE), filed on Jan. 14, 2020; and application No. 10 2020 100 745.0 (DE), filed on Jan. 14, 2020.
Prior Publication US 2023/0058255 A1, Feb. 23, 2023
Int. Cl. F16K 27/12 (2006.01); F16K 7/12 (2006.01); F16K 27/02 (2006.01); F16K 7/17 (2006.01)
CPC F16K 27/0236 (2013.01) [F16K 7/12 (2013.01); F16K 7/17 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A diaphragm valve comprising a valve body, a drive body and a diaphragm, wherein the diaphragm is braced between the valve body and the drive body, and wherein the diaphragm has a functional region and a fastening portion surrounding the functional region, the functional region in a relaxed state comprising:
a. a central portion, which protrudes on a wet side of the diaphragm, wherein the central portion comprises a wet-side sealing web, and wherein the sealing web is surrounded by two recesses in a section view perpendicular to its longitudinal extension;
b. a lateral portion, which protrudes on a dry side of the diaphragm, the lateral portion being curved, at least in parts, toward the dry side of the diaphragm; and
c. an intermediate portion arranged between the central portion and the lateral portion, which is curved, at least in parts, toward the wet side of the diaphragm, wherein a wet-side surface of the intermediate portion is rotationally symmetrical to the positioning axis, wherein the intermediate portion, at least in parts, follows an arc of a circle having a first radius, wherein the lateral portion, at least in parts, follows an arc having a second radius, and wherein the second radius is smaller than the first radius, wherein a ratio of the second radius to the first radius is between 0.40 and 0.85.