US 12,263,335 B2
Cooling of a drive system for diaphragm pumps
Matthew Oakley, Warendorf (DE); and Norbert Schwiertz, Strausberg (DE)
Assigned to Berlin Heart GmbH, Berlin (DE)
Appl. No. 17/423,099
Filed by Berlin Heart GmbH, Berlin (DE)
PCT Filed Jan. 15, 2020, PCT No. PCT/EP2020/050925
§ 371(c)(1), (2) Date Jul. 14, 2021,
PCT Pub. No. WO2020/148341, PCT Pub. Date Jul. 23, 2020.
Claims priority of application No. 19151949 (EP), filed on Jan. 15, 2019.
Prior Publication US 2022/0126084 A1, Apr. 28, 2022
Int. Cl. F04B 43/04 (2006.01); A61M 60/104 (2021.01); A61M 60/117 (2021.01); A61M 60/258 (2021.01); A61M 60/268 (2021.01); A61M 60/435 (2021.01); A61M 60/441 (2021.01); A61M 60/835 (2021.01); F04B 5/00 (2006.01); F04B 23/06 (2006.01)
CPC A61M 60/441 (2021.01) [A61M 60/104 (2021.01); A61M 60/117 (2021.01); A61M 60/258 (2021.01); A61M 60/268 (2021.01); A61M 60/435 (2021.01); A61M 60/835 (2021.01); F04B 5/00 (2013.01); F04B 23/06 (2013.01); F04B 43/04 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A drive unit for a diaphragm pump, the drive unit comprising:
a first hollow body;
a piston, wherein the piston divides the hollow body into a first chamber and a second chamber, the first chamber being configured to supply fluid to the diaphragm pump and the second chamber having an inlet valve and an outlet valve, wherein the second chamber is configured to draw a gas flow through the inlet valve and to force the gas flow out through the outlet valve to an outlet line;
a motor driving the piston via a spindle extending through the second chamber from the motor to the piston, wherein the motor is disposed below the second chamber; and
a heat sink comprising a monolithic first heat sink disposed below the second chamber and directly adjacent to the motor so as to be thermally coupled thereto, wherein the heat sink is thermally coupled to the motor and thermally and fluidically coupled to the second chamber via the outlet valve;
wherein the outlet line is disposed within the first heat sink.