A refrigeration system includes first and second compressors and an oil separator. The oil separator includes an inlet for receiving refrigerant and oil from the first compressor, a refrigerant outlet, and an oil outlet. The oil separator separates the oil from the refrigerant. A portion of the oil separator below a horizontal plane intersecting the refrigerant outlet collects separated oil and has a volume equal to a first compressor oil supply. The first compressor oil supply is greater than or equal to 100% and less than or equal to 250% of a first compressor initial oil charge. The first compressor receives oil from the oil outlet when an amount of oil in the portion is less than or equal to the first compressor oil supply. The second compressor receives oil from the refrigerant outlet when the amount of oil in the portion is greater than the first compressor oil supply.

Systems, apparatuses, and methods are provided herein for providing temperature control. An apparatus for temperature control comprises a portable housing configured for delivery of items, an insulated storage compartment in the portable housing and configured to hold a plurality of items during a transport of the portable housing, a temperature control device configured to affect the temperature inside the insulated storage compartment, and a host coupler configured to couple with a host temperature control system to allow the host temperature control system to affect the temperature inside the insulated storage compartment. Wherein the temperature control device is configured to affect the temperature inside the insulated storage compartment without the host coupler being coupled to the host temperature control system.

A modular adiabatic cooling apparatus comprises a lower module and an upper module which is provided with a ventilator, wherein each of said modules comprises a pair of heat exchangers disposed parallel in a vertical direction on opposite sides of a housing, and a pair of adiabatic evaporative cooling panels, each disposed on an external side of a heat exchanger, and reciprocal guide and coupler disposed in correspondence with respective connection faces, and have a non-operating configuration in which the lower and upper modules are separated from each other, and an operating configuration in which the upper module is stacked one on top of the lower module.

A modular container such as a mobile refrigerator is configured to attach to a larger in-home refrigerator. The modular container has an attachment feature configured to selectively attach and detach from a first attachment feature of the larger refrigerator to enable the modular container to be selectively attached and detached from the interior compartment of the larger refrigerator. A door of the modular container is configured to selectively enclose an interior of the modular container. The modular container has its own dedicated refrigeration system mounted thereon, enabling the modular container to act as its own refrigerator once removed from the larger refrigerator.

A method for controlling the temperature and humidity level of the air contained in an enclosed refrigerated space includes the step of measuring the temperature of air in the space. The space includes a cooler having a plurality of cold batteries; at least one coolant temperature sensor at the input and at least one coolant temperature sensor at the output of the cooler; at least one fan with an adjustable, reversible direction of ventilation for producing a variable flow of air through the cooler; at least one temperature sensor upstream of the fan; at least one temperature sensor downstream of the cooler; at least one humidity level sensor upstream of the fan; and at least one humidity level sensor downstream of the cooler. The control is affected by reference values given initially for the temperature and humidity level in the enclosed space.

A fresh product cold chain distribution device and a distribution method are provided. The fresh product cold chain distribution device comprises a self-service pickup cabinet and at least one refrigeration logistics box; the self-service fresh product pickup cabinet comprises a cabinet body, an air channel cover panel, a scanner, a touch display screen, a power supply plug, and a control panel; the self-service fresh product pickup cabinet is internally provided with an air circulation system consisting of an exhaust channel, exhaust holes of the self-service pickup cabinet unit cell, exhaust holes of the exhaust channel, an inlet channel, inlet holes of the inlet channel, and inlet holes of the self-service pickup cabinet unit cell; the cabinet body comprises a plurality of unit cells; the refrigeration logistics box comprises a box body, a quick-connection plug board, a refrigeration device, a temperature selection switch, and an identification.

An exemplary modular container system is provided that includes couplings that may, in one embodiment, be implemented as integrated or interfaced receptacles and corresponding inserts that allow accessory items to couple with a compartment, which may be referred to as a wet box, and used as a container that holds items. The accessories may include, for example, a second compartment or dry box for holding items that need to be kept dry, a fishing rod holder, a shelf, a cutting board, a cup holder, a chair or seating platform, one or more dollies, or virtually any needed accessory.

Embodiments of the present invention provide a refrigerator comprising an ice machine, the refrigerator comprising: a main body, a door, a dispenser disposed on a front surface of the door, a compressor, a condenser and an expansion valve on the door, an ice tray disposed in the ice-making compartment, a refrigerant pipe configured to connect the compressor, the condenser, and the expansion valve, a heater disposed at a peripheral portion of the ice tray, a drain duct disposed under the ice tray, and a defrost water discharge pipe configured to couple the drain duct and the excess water tray.

An exemplary modular cooler system is provided that includes couplings that may, in one embodiment, be implemented as integrated or interfaced receptacles and corresponding inserts that allow accessory items to couple with an insulated compartment, which may be referred to as a wet box, and used as an insulated cooler that holds ice. The accessories may include, for example, a second compartment or dry box for holding items that need to be kept dry, a fishing rod holder, a shelf, a cutting board, a cup holder, a chair or seating platform, one or more dollies, or virtually any needed accessory. In one embodiment the thermal properties of the insulated compartment are enhanced with the use of one or more radiant barrier members, such as one positioned adjacent the lid of the insulated compartment.

A beverage cooling system includes a main assembly having a refrigeration module, a pumping and control module, and a beverage cooling module. The refrigeration module has a refrigeration system cooling a cooling medium. The beverage cooling module has a cooling tank cooled by the refrigeration system. The pumping and control module has a pump to pump a beverage ingredient cooled by the refrigeration system. Each of the refrigeration module, the pumping and control module, and beverage cooling module are independently removable from and connectable to the remainder of the main assembly.