US 12,098,869 B2
Cooling system with controlled biphase mixing of refrigerant
Lior Moshe Yosef, Nesher (IL); and Eyal Simhon, Kiryat-Haim (IL)
Assigned to M.D. Mechanical Devices Ltd., Haifa (IL)
Filed by M.D. Mechanical Devices Ltd., Haifa (IL)
Filed on Aug. 19, 2021, as Appl. No. 17/406,138.
Application 17/406,138 is a division of application No. 16/662,055, filed on Oct. 24, 2019, granted, now 11,112,147.
Prior Publication US 2021/0381729 A1, Dec. 9, 2021
Int. Cl. F25B 29/00 (2006.01); F25B 41/20 (2021.01); F25B 49/02 (2006.01); H05K 7/20 (2006.01)
CPC F25B 29/003 (2013.01) [F25B 41/20 (2021.01); F25B 49/02 (2013.01); H05K 7/20 (2013.01); F25B 2300/00 (2013.01); F25B 2400/04 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A cooling system, comprising a main refrigeration cycle and an auxiliary refrigeration cycle, the main refrigeration cycle comprising:
a first refrigerant;
a first accumulator, a first compressor, a first condenser, a mixing chamber, a metering device and a first evaporator, all fluidly connected in sequence within a main flow path, configured to circulate the first refrigerant therein;
a bypass flow path into which the system is configured to divert a portion of first refrigerant flow from a location on the main flow path that is downstream from the first compressor and upstream from the first condenser;
a valve configured to control flow through the bypass flow path; and
a controller configured to dynamically control operation of the valve;
wherein the auxiliary refrigeration cycle comprises:
a second refrigerant; and
a second evaporator, thermally coupled to the first condenser and configured to enable the second refrigerant, flowing through the second evaporator, dissipate heat from the first refrigerant, flowing through the first condenser, and
wherein the mixing chamber is configured to receive refrigerant from the first condenser and from the bypass flow path and to direct outflow of liquid refrigerant and gas refrigerant from the mixing chamber through the metering device to the first evaporator, and wherein a ratio of said liquid refrigerant and said gas refrigerant in said outflow of said mixing chamber is controllable by said controller.