Abstract:
A refrigeration circuit (1) configured for circulating a refrigerant an comprises in the direction of flow of the refrigerant: at least one compressor (2a, 2b, 2c, 2d); at least one heat recovery heat exchanger (4); at least one gas cooler/condenser (10); at least one evaporator associated expansion device (18); at least one receiver (14); and at least one evaporator (20). The refrigeration circuit (1) further comprises a gas/liquid separator (8) having a refrigerant inlet line (7) fluidly connected to an outlet-side of the at least one heat recovery heat exchanger (4); an gaseous phase outlet line (9) fluidly connected to an inlet side of the at least one gas cooler/condenser (10); and an liquid phase outlet line (13) fluidly connected to the receiver (14).
Abstract:
Operation data of a refrigerant circuit is acquired after an initial refrigerant charge amount of refrigerant is charged in the refrigerant circuit and operation of the refrigerant circuit is started, an internal volume of a high-pressure pipe 6 is computed from the obtained operation data and the initial refrigerant charge amount input in a input unit 112, a target refrigerant charge amount is computed from the computed internal volume of the high-pressure pipe 6 and a standard operating state acquired in advance, the standard operating state being operation data of the refrigerant circuit when the refrigerant circuit is in a standard operating state that satisfies a preset condition, and an additional refrigerant charge amount is computed from the target refrigerant charge amount and the initial refrigerant charge amount.
Abstract:
The invention relates to a coolant circuit (20) and to a domestic refrigeration device (1) having a coolant circuit (20) of this kind. The coolant circuit (20) comprises a compressor (21), a condenser (22) which is connected downstream of the compressor (21), a throttle apparatus (23) which is connected downstream of the condenser (22), an evaporator (24) which is arranged between the compressor (21) and the throttle apparatus (23), and a drying apparatus (31, 61) which is designed to draw moisture from the coolant in the coolant circuit (20) and which is designed to provide an adjustable storage volume for the coolant in the coolant circuit (20).
Abstract:
A condenser evaporator system includes: a condenser (200) con¬ structed for condensing a gaseous refrigerant from the source of com¬ pressed gaseous refrigerant; a controlled pressure receiver (202) for holding liquid refrigerant; a first liquid refrigerant feed line (210) for conveying liquid refrigerant from the condenser to the controlled pres¬ sure receiver; an evaporator (204) for evaporating liquid refrigerant; and a second liquid refrigerant feed line (214) for conveying liquid re¬ frigerant from the controlled pressure receiver to the evaporator. The condenser evaporator system can be provided as multiple condenser evaporator systems operating from a source of compressed gaseous refrigerant.
Abstract:
A refrigerating system according to the invention comprises refrigerating cycle having a compressor (4), a condenser (6), a collecting container (10), an expansion device (16), an evaporator (18) and refrigerating circuits circulating a refrigerant therethrough; a liquefying set comprising an additional condenser (24), connected in parallel to the condenser (6); and a control unit that in operation allows switching between normal operation of the refrigerating cycle and refrigerant collecting operation in which the remaining refrigerant is sucked off the condenser (6), is liquefied by the additional condenser (24) and collects in the collecting container (10).
Abstract:
The present invention relates to a refrigeration system with a detector for detection of refrigerant leakage, the system comprising a flow circuit for recirculation of a refrigerant and including a compressor for generation of a refrigerant flow from a low-pressure side to a high-pressure side of the compressor and, in the order defined by the flow direction, connected in series with a condenser for cooling of the refrigerant towards the ambient temperature, a receiver for accommodation of refrigerant, a pressure reducing device separating the low-pressure side and the high pressure side of the compressor, and a first evaporator for evaporation of the refrigerant, and a weight transducer mounted in operational contact with the receiver for generation of an output signal corresponding to the weight of the receiver.
Abstract:
An air conditioning system for a vehicle including an integral valve block (32) having a liquid line bore (42) extending therethrough and a suction line bore (44) extending therethrough with a transverse by-pass passage (34). The by-pass check valve (38) of the first system of Figures 1 and 2 allows only one-way fluid flow through the by-pass passage (34) from the suction fluid line (22) to the liquid fluid line (20), whereas the by-pass check valve (40) of the second system of Figures 3 and 4 allows only one-way fluid flow through the by-pass passage (34) from the liquid fluid line (20) to the suction fluid line (22). Also integrated into the valve block (16) is a suction check valve (46) in the suction fluid line (22) for allowing one-way fluid flow from the evaporator (16) to the compressor (12).
Abstract:
A cooling cycle using a supercritical fluid as a refrigerant, capable of regulating the quantity of the refrigerant over a wide range, and adapted to reduce a required capacity of a refrigerant tank provided for increasing and decreasing the quantity of the refrigerant, wherein a main path (7) is formed by connecting a compressor (2), a radiator (3), an expansion valve (5) and an evaporator (6) in series, and a bypass path (9) is provided in the main path (7) so as to bypass the expansion valve (5) and is provided with a refrigerant tank (10) for storing the refrigerant therein, and on-off valves (11, 12) for opening and closing the inlet and the outlet of the refrigerant tank (10). The refrigerant in the refrigerant tank is cooled with the refrigerant which is circulating in the main path (7) and which has just passed through the expansion valve to keep the temperature in the refrigerant tank (10) lower than that in a high-pressure side line (7a), whereby a required quantity of refrigerant can be recovered.