The invention relates to a refrigeration method and equipment for cooling the inside of a container, or a coolant circulating in a refrigeration circuit of a vehicle and/or of a supercharger, which uses an air current as a working fluid and comprises the steps of: compressing; cooling in coolers coupled to an ejection cycle; expanding, to reduce the temperature of the air current and obtain mechanical energy from same; refrigerating, to allow an exchange of thermal energy between the air current resulting from the expansion step and the coolant of the refrigeration circuit or the inside of the container; and regenerating, to allow an exchange of thermal energy between the air current resulting from the compression step, reducing the temperature thereof, and the air current resulting from the regenerating step, increasing the temperature thereof.

The invention relates to a refrigeration method and equipment for cooling the inside of a container, or a coolant circulating in a refrigeration circuit of a vehicle and/or of a supercharger, which uses an air current as a working fluid and comprises the steps of: compressing; cooling in coolers coupled to an ejection cycle; expanding, to reduce the temperature of the air current and obtain mechanical energy from same; refrigerating, to allow an exchange of thermal energy between the air current resulting from the expansion step and the coolant of the refrigeration circuit or the inside of the container; and regenerating, to allow an exchange of thermal energy between the air current resulting from the compression step, reducing the temperature thereof, and the air current resulting from the regenerating step, increasing the temperature thereof.

A thermal management system includes a receiver configured to store a refrigerant fluid; a refrigeration system having a refrigerant fluid path that includes the receiver, and at least one evaporator disposed in the refrigerant fluid path. The refrigeration system is configured to receive the refrigerant fluid from the receiver through the refrigerant fluid path. The at least one evaporator is configured to receive the refrigerant fluid and to extract heat from at least one heat load having a specified thermal inertia that is in at least one of thermal conductive or convective contact with the at least one evaporator.

A thermal management system includes a receiver configured to store a refrigerant fluid; a refrigeration system having a refrigerant fluid path that includes the receiver, and at least one evaporator disposed in the refrigerant fluid path. The refrigeration system is configured to receive the refrigerant fluid from the receiver through the refrigerant fluid path. The at least one evaporator is configured to receive the refrigerant fluid and to extract heat from at least one heat load having a specified thermal inertia that is in at least one of thermal conductive or convective contact with the at least one evaporator.

The air conditioner unit includes an outdoor heat exchanger disposed in an outdoor portion and an indoor heat exchanger disposed in an indoor portion, the indoor heat exchanger including a first coil assembly and a second coil assembly, each of the first and second coil assemblies including one or more coils through which refrigerant is flowable. The air conditioner unit further includes an ejector disposed in the indoor portion, the ejector comprising a motive port, a suction port and a discharge port. The air conditioner unit further includes a phase separator disposed in the indoor portion, the phase separator comprising an inlet, a gas outlet and a liquid outlet. The air conditioner unit further includes a compressor in fluid communication with the outdoor heat exchanger and the indoor heat exchanger.

When intended to increase a refrigerant discharge capacity of a compressor in an ejector refrigeration cycle device at start-up of the compressor, the refrigerant discharge capacity is increased in such a manner that an increase amount in the refrigerant discharge capacity of the compressor per predetermined time period is lower than a maximum capacity increase amount per predetermined time period enabled by the compressor. Thus, even if a gas-liquid two-phase refrigerant flows into a refrigerant inflow passage forming a swirling-flow generating portion, the flow velocity of the gas-liquid two-phase refrigerant is prevented from becoming high, so that it can reduce friction noise that would be caused when the gas-liquid two-phase refrigerant circulates through the refrigerant inflow passage, further suppressing the generation of noise from the ejector.

When intended to increase a refrigerant discharge capacity of a compressor in an ejector refrigeration cycle device at start-up of the compressor, the refrigerant discharge capacity is increased in such a manner that an increase amount in the refrigerant discharge capacity of the compressor per predetermined time period is lower than a maximum capacity increase amount per predetermined time period enabled by the compressor. Thus, even if a gas-liquid two-phase refrigerant flows into a refrigerant inflow passage forming a swirling-flow generating portion, the flow velocity of the gas-liquid two-phase refrigerant is prevented from becoming high, so that it can reduce friction noise that would be caused when the gas-liquid two-phase refrigerant circulates through the refrigerant inflow passage, further suppressing the generation of noise from the ejector.

An ejector-type refrigeration cycle has a compressor, an ejector module, a discharge capacity control section, and a pressure difference determining section. The ejector module has a body providing a gas-liquid separating space. The pressure difference determining section determines whether a low pressure difference operating condition is met. The low pressure difference operating condition is an operating condition in which a pressure difference obtained by subtracting a low-pressure side refrigerant pressure from a high-pressure side refrigerant pressure a predetermined reference pressure difference or lower. The body is provided with an oil return passage that guides a part of a liquid-phase refrigerant to flow from the gas-liquid separating space to a suction side of the compressor. The discharge capacity control section sets a refrigerant discharge capacity to be a predetermined reference discharge capacity or higher when the low pressure difference operating condition is determined to be met.

An ejector-type refrigeration cycle has a compressor, an ejector module, a discharge capacity control section, and a pressure difference determining section. The ejector module has a body providing a gas-liquid separating space. The pressure difference determining section determines whether a low pressure difference operating condition is met. The low pressure difference operating condition is an operating condition in which a pressure difference obtained by subtracting a low-pressure side refrigerant pressure from a high-pressure side refrigerant pressure a predetermined reference pressure difference or lower. The body is provided with an oil return passage that guides a part of a liquid-phase refrigerant to flow from the gas-liquid separating space to a suction side of the compressor. The discharge capacity control section sets a refrigerant discharge capacity to be a predetermined reference discharge capacity or higher when the low pressure difference operating condition is determined to be met.

An ejector for a refrigerating machine, including a main body crossed by a conduit for passage of refrigerant fluid and having a compartment which comprises a seating, which is in communication with said conduit, and a mouth for inlet of refrigerant fluid; a nozzle which can be coupled with the seating and having an internal hole, for passage of the refrigerant fluid a shutter having an end which can be coupled with the hole to close the hole.