Chilling unit with “free-cooling”, designed to operate also with variable flow rate; system and process
AssigneeRc Group S.P.A.
InventorTrecate Roberto
Life of this patent
Estimating the term…
Abstract
A unit comprises a refrigerating circuit (30), at least part of a primary circuit (110), and connections (151, 152) for a user's circuit (120). The refrigerating circuit comprises an evaporator (E), a compressor (31), a condenser battery (C), and an expansion valve (34), and connection lines. The primary circuit extends through the evaporator and through an air-cooled “free-cooling” battery (FC). To allow a variable flow through the free-cooling battery, though maintaining the flow rate constant through the evaporator, the primary circuit (110) comprises a bypass line (140) extending between an outlet line from the evaporator and an inlet line to the evaporator, and a storage tank (A) on said bypass line.
Claims8
A chilling unit for a cooling system for cooling a user's terminal or battery, said unit including a refrigerating circuit (30) comprising an evaporator (E), a compressor, a condenser battery (C), and an expansion valve, and connection lines (36, 32, 33), and a primary circuit comprising an outlet line (12) from the evaporator, a return line (13) from the user's terminal, an inlet line (18) to the evaporator, a free-cooling battery (FC), an inlet line (15) to the free-cooling battery, an outlet line (16) from the free-cooling battery, a bypass line (14) for bypassing the free-cooling battery, a three-way valve (V) connected to the outlet line (16) from the free-cooling battery, the bypass line (14), and the inlet line (18) to the evaporator, a pump (P1) of the primary circuit,
- characterized in that it further comprises a bypass line (140) between the outlet line (12) from the evaporator and the inlet line (18) to the evaporator, and a storage tank (A) on said bypass line.
An auxiliary unit for a cooling system for a user's terminal or battery, said system comprising a chilling unit including a refrigerating circuit (30) having an evaporator (E), a compressor (31), a condenser battery (C), an expansion valve (34), and a primary circuit comprising an outlet line portion (12) from the evaporator, an inlet line portion (18) to the evaporator, a free-cooling battery (FC) connected between an inlet line (15) to the free-cooling battery and an output line (16) from the free-cooling battery, and a bypass line (14) for bypassing the free-cooling battery,
- said auxiliary unit (160) being characterized in that it comprises a section of outlet line (12) from the evaporator, a pump (P1) of the primary circuit thereon, a bypass line (140) between outlet from and inlet to the evaporator, a storage tank (A) on said bypass line, and in that it is made as a self-contained unit (160) with means (151, 152, 153, 154, 155) for applying to a system.
In a refrigerating system for cooling a user's terminal or battery said system operating with variable flow rate through the user's appliance and having a primary circuit with free-cooling battery, a process for allowing a variable flow rate through the primary circuit, characterized in that the variable outlet flow rate from the user's terminal is passed through the free-cooling battery and, before being sent to an evaporator (E) is integrated with a flow coming from a storage tank (A) so as to make the evaporator (E) operate at a constant flow rate.
Dependencies are inferred from the claim text.