US 12,066,220 B2
Refrigeration unit with dynamic air cooling and a working element of the unit
Olha Razumtseva, Kiev (UA); Oleksandr Razumtsev, Kiev (UA); and Pavel Panasjuk, Prague (CZ)
Assigned to DAC SP. Z O.O., Elblag (PL)
Appl. No. 17/759,848
Filed by DAC Sp. z o.o., Elblag (PL)
PCT Filed Jan. 27, 2021, PCT No. PCT/IB2021/050606
§ 371(c)(1), (2) Date Jul. 29, 2022,
PCT Pub. No. WO2021/152464, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. P.432791 (PL), filed on Jan. 31, 2020.
Prior Publication US 2023/0129766 A1, Apr. 27, 2023
Int. Cl. F25B 11/04 (2006.01); F25B 1/053 (2006.01); F25B 9/00 (2006.01)
CPC F25B 11/04 (2013.01) [F25B 1/053 (2013.01); F25B 9/004 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A refrigeration unit with dynamic air cooling, comprising:
a centrifugal compressor with an electric drive, a working element providing dynamic air cooling, a turbine with a radial axis, an electrical energy generator, a turbine heat exchanger, a pump of process fluid, a compressor heat exchanger of an air-air type with a fan connected thereto,
wherein an outlet of centrifugal compressor is connected to the compressor heat exchanger, an outlet of the compressor heat exchanger is connected to the working element, in turn an outlet of the working element is connected to an inlet of the turbine with a radial axis, connected to the electrical energy generator, while an outlet of the turbine is directed towards the turbine heat exchanger further connected to the pump of the process fluid, said working element having a cylindrical hollow profile comprising helical recesses with a substantially oval shape and configured to provide air cooling by conversion of inner thermal energy of an air flow into kinetic energy.