US 12,228,040 B2
Expansion installation and installation for obtaining electrical energy from heat
Franck Repentin, Herrenberg (DE); and Marcus Blumhardt, Rutesheim (DE)
Assigned to BITZER Kuehlmaschinenbau GmbH, Sindelfingen (DE)
Filed by BITZER Kuehlmaschinenbau GmbH, Sindelfingen (DE)
Filed on Aug. 3, 2021, as Appl. No. 17/392,476.
Application 17/392,476 is a continuation of application No. PCT/EP2020/052314, filed on Jan. 30, 2020.
Claims priority of application No. 102019102819.1 (DE), filed on Feb. 5, 2019.
Prior Publication US 2021/0363919 A1, Nov. 25, 2021
Int. Cl. F01D 25/00 (2006.01); G01P 3/48 (2006.01)
CPC F01D 25/00 (2013.01) [G01P 3/48 (2013.01); F05D 2220/64 (2013.01); F05D 2220/76 (2013.01); F05D 2270/304 (2013.01); Y02E 10/44 (2013.01)] 43 Claims
OG exemplary drawing
 
1. An expansion installation comprising an expansion device, which is operated by an expanding working medium, and further comprising a generator driven by the expansion device, wherein the expansion installation is provided with a rotational speed sensor, which is coupled to a shaft of the expansion installation that rotates proportionally to a rotor of the generator, and which takes the form of an electrical sensor generator having a permanently magnetized sensor rotor and a stator that generates an electrical sensor signal, which electrical sensor generator generates as a sensor signal an electrical voltage.