The disclosure relates to apparatuses and methods for indicating status of multi-phase vacuum-assisted recovery of refrigerant from a vehicle. One apparatus for multi-phase vacuum-assisted recovery of refrigerant from a vehicle includes a compressor that removes refrigerant from the vehicle during a first phase and a second phase of a recovery process. The apparatus also includes a vacuum pump to assist the compressor in the removal of refrigerant from the vehicle during a second stage of the recovery process. Further, the vacuum pump is fluidly connected in series with the compressor during the second phase of the recovery process. The apparatus additionally includes one or more status lights and at least one processor to determine a status of the recovery process. At least one of the status lights is illuminated to represent a status of the recovery process, and at least one is visible from 360 degrees around the apparatus.

An apparatus is provided for absorbing shocks and a control method capable of protecting cargo from shocks without a separate additional system in a cargo hold of a moving object. The apparatus for absorbing shocks includes at least one inflatable member disposed in a moving object, an air conditioner module installed on the moving object, and a supply pipe connected between the air conditioner module and the inflatable member and providing a refrigerant of the air conditioner module to the inflatable member.

The present invention provides systems for cleaning air conditioning systems, especially vehicle air conditioning systems, and methods utilizing said systems, wherein said cleaning systems comprise: a set of designated connectors; a cleaning fluid container; a heating element; a pump; and a filter.

An outdoor unit of the heat pump includes a compressor, an oil separator provided in a discharge path of the compressor, an outdoor-unit connecting pipe connecting an intake path of the compressor and an outdoor unit of an another heat pump for supplying a refrigerant to the outdoor unit of the another heat pump, an oil supply pipe extending from a predetermined position of the oil separator and connecting to the outdoor-unit connecting pipe, an on-off valve provided on the oil supply pipe, an expansion valve provided in a portion of the outdoor-unit connecting pipe between a connecting part connected to the intake path and a connecting part connected to the oil supply pipe, and a refrigerant filling port provided in a portion of the outdoor-unit connecting pipe between the connecting part and the expansion valve.

Systems, devices, and methods for recovering mixed refrigerant and/or nitrogen within liquefaction systems are provided. The systems, devices, and methods facilitate recovering mixed refrigerant (MR) and/or nitrogen vapor that can leak from a compressor, separating the MR from the nitrogen, and reusing the MR and/or the nitrogen within the liquefaction system. Recovering and reusing MR and/or nitrogen can minimize loss of MR and nitrogen which can lower the total operating cost of a liquefaction system. Additionally, recovering the MR, rather than burning it, can reduce environmental emissions by reducing the amount of MR that is burned.

A method for monitoring a refrigerant charge in a vapour compression system (1) is disclosed, the vapour compression system (1) including a compressor unit (2), a heat rejecting heat exchanger (3), a high pressure expansion device (4), a receiver (5), at least one expansion device (9, 10), and at least one evaporator (11, 12) arranged in a refrigerant path. A change in net mass flow into or out of the receiver (5) and/or a change in net enthalpy flow into or out of the receiver (5) is detected, and a pressure inside the receiver (5) is monitored as a function of time, following the detected change in net mass flow and/or in net enthalpy flow. A time constant being representative for dynamics of the receiver (5) is derived, based on the monitored pressure as a function of time, and information regarding a refrigerant charge in the vapour compression system (1) is derived, based on the derived time constant.

A method for monitoring a refrigerant charge in a vapour compression system (1) is disclosed, the vapour compression system (1) including a compressor unit (2), a heat rejecting heat exchanger (3), a high pressure expansion device (4), a receiver (5), at least one expansion device (9, 10), and at least one evaporator (11, 12) arranged in a refrigerant path. A change in net mass flow into or out of the receiver (5) and/or a change in net enthalpy flow into or out of the receiver (5) is detected, and a pressure inside the receiver (5) is monitored as a function of time, following the detected change in net mass flow and/or in net enthalpy flow. A time constant being representative for dynamics of the receiver (5) is derived, based on the monitored pressure as a function of time, and information regarding a refrigerant charge in the vapour compression system (1) is derived, based on the derived time constant.

An oil refill container that can be coupled to a coolant refill station in an air conditioning system for motor vehicles comprises a body defining an oil containment compartment adapted to be mixed with the coolant circulating in said air conditioning system, and a closing cap provided with quick coupling means adapted to be connected to the refill station or a seat adapted to removably connect the quick coupling means to said closing cap, said closing cap comprising a cover and an under-cap adapted to define a compartment suitable for containing at least an amount of a drying substance when coupled to the cover.

An oil refill container that can be coupled to a coolant refill station in an air conditioning system for motor vehicles comprises a body defining an oil containment compartment adapted to be mixed with the coolant circulating in said air conditioning system, and a closing cap provided with quick coupling means adapted to be connected to the refill station or a seat adapted to removably connect the quick coupling means to said closing cap, said closing cap comprising a cover and an under-cap adapted to define a compartment suitable for containing at least an amount of a drying substance when coupled to the cover.

A pipe connecting assembly includes a valve body, a valve stem and a fitting pipe part. The valve body includes a first valve body part and a second valve body part. The valve body has a valve cavity. The first valve body part has a first cavity, and the second valve body part has a second cavity. The valve stem is at least partially located in the valve cavity. The valve body is provided with a valve port. The valve stem can move in the valve cavity to close or open the valve port, so that the first cavity is separated from or in communication with the second cavity. The pipe connecting assembly further includes an adhesive layer located between the fitting pipe part and the first valve body part. Such a structure is beneficial to improving the connection reliability of the pipe connecting assembly.