Abstract: The present invention provides systems, methods, and articles for stress reduction and sleep promotion. A stress reduction and sleep promotion system includes at least one remote device, at least one body sensor, and at least one remote server. In other embodiments, the stress reduction and sleep promotion system includes machine learning.

Abstract: An air conditioner, a heating control method of an air conditioner, and a computer readable storage medium are provided. According to the method, a refrigerant passing through an evaporator is divided by a shunting module into two flows; one flow of the refrigerant is throttled and depressurized by an enhanced vapor injection electronic expansion valve. Based on a difference between an indoor pipe temperature and an exhaust temperature of a compressor of the air conditioner, an opening degree parameter of the enhanced vapor injection electronic expansion valve is controlled to control a refrigerant output amount by the enhanced vapor injection electronic expansion valve. Thus, the refrigerant amount of the flow of refrigerant, subject to throttling and depressurizing, for exchanging heat with the other flow of refrigerant can be controlled to implement an enhanced vapor injection function.

Abstract: A refrigerator appliance is provided including a cabinet defining a chilled chamber, a door rotatably hinged to the cabinet to provide selective access to the chilled chamber, and a light sensing assembly positioned within the chilled chamber. A controller is configured to determine that the door is closed, identify light in the chilled chamber using the light sensing assembly, and provide a user notification in response to identifying the light in the chilled chamber when the door is closed.

Abstract: An object of the present disclosure is to provide a novel low-GWP mixed refrigerant. To solve this problem, the present disclosure provides a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132 (E)), trifluoroethylene (HFO-1123), 1,3,3,3-tetrafluoropropene (R1234ze), and difluoromethane (R32).

Abstract: A dynamic method of maintaining a predefined sub-cooling of a refrigerant exiting a condenser by dynamic control of the circulating mass of refrigerant, by transferring the refrigerant into or towards a receiver installed in parallel with the liquid connection between the condenser and the expansion valve, as a function of the difference in temperatures between the condensation temperature of the saturation liquid and the discharge temperature from the condenser.

Abstract: A refrigerator includes a storage space defined in a cabinet and a machine room arranged under the storage space. To implement a cooling system, a compressor, a condenser, and a heat dissipation fan are included in the machine room. In addition, a control module is provided in the machine room to face an outlet of the machine room. The control module is installed at a position close to the entrance of the machine room and configured to be separated frontward from the machine room, and thus accessibility to the control module can be enhanced.

Abstract: A refrigerator comprises a body comprising a storage compartment, the storage compartment comprising a first storage compartment, and a second storage compartment, and a partition wall to separate the storage compartment into the first storage compartment and the second storage compartment, a first control valve configured to control a flow of water received from an external water supply source, an ice maker configured to generate ice using the water discharged from the first control valve, a second control valve configured control a flow of the water discharged from the first control valve, a dispenser comprising an operating lever configured to supply the water received from the second valve, and an automatic water supply device configured to supply the water received from the second valve to a water container and configured to control the water container to be filled with a predetermined amount of water.

Abstract: A refrigeration apparatus includes: a compressor; an outdoor heat exchanger connected to the compressor; an indoor heat exchanger connected to the compressor; and an expansion valve disposed between the outdoor heat exchanger and the indoor heat exchanger. In cooling operation, a refrigerant flows through the compressor, the outdoor heat exchanger, the expansion valve, and the indoor heat exchanger in this order. In heating operation, the refrigerant flows through the compressor, the indoor heat exchanger, the expansion valve, and the outdoor heat exchanger in this order. The refrigerant is an HFO (hydrofluoroolefin) refrigerant or a refrigerant mixture that includes an HFO refrigerant. The indoor heat exchanger and the outdoor heat exchanger are cross-fin-type heat exchangers or stack-type heat exchangers.

Abstract: A packaged heating and/or cooling unit for a production module for a heating, ventilation, air conditioning, and refrigeration (HVACR) system. The packaged unit includes a heat pump configured to provide heating and/or cooling; a connection to a piping distribution system to selectively connect to a hot fluid circuit and/or a cold fluid circuit; and a controller. The controller is configured to connect to and receive a signal from a building automation system for a heating requirement or a cooling requirement, and further configured to selectively control connection to either the hot fluid circuit or the cold fluid circuit and independently control the packaged heating and/or cooling unit based on the signal from the building automation system for either the heating requirement or the cooling requirement.

Abstract: The present invention provides systems, methods, and articles for stress reduction and sleep promotion. A stress reduction and sleep promotion system includes at least one remote device, at least one body sensor, and at least one remote server. In other embodiments, the stress reduction and sleep promotion system includes machine learning.

Abstract: A cryogenic freezer and a method of controlling temperature within the cryogenic freezer. The cryogenic freezer includes an inner vessel. The inner vessel defines a storage chamber. The cryogenic freezer includes an outer vessel surrounding the inner vessel. The outer vessel may define a vacuum-insulated space in between the outer vessel and the inner vessel. The cryogenic freezer includes a temperature sensor configured to measure a temperature within the storage chamber. The cryogenic freezer includes a controller coupled to the temperature sensor. The controller is configured to pulse an amount of cryogen into the storage container to control the temperature within the storage container.

Abstract: A heat exchanger which may be used in an engine, such as a vehicle engine for an aircraft or orbital launch vehicle is provided. The heat exchanger may be configured as generally drum-shaped with a multitude of spiral sections, each containing numerous small diameter tubes. The spiral sections may spiral inside one another. The heat exchanger may include a support structure with a plurality of mutually axially spaced hoop supports, and may incorporate an intermediate header. The heat exchanger may incorporate recycling of methanol or other antifreeze used to prevent blocking of the heat exchanger due to frost or ice formation.

Abstract: A refrigeration device, a refrigerator, and a control method therefor, a food processing method and a control device. The refrigeration device includes a compressor, a condenser, a throttling device and an evaporator, and the compressor, the condenser, the throttling device and the evaporator are sequentially connected to form a refrigerant circulation loop; a connecting pipeline between an exhaust port of the compressor and a refrigerant inlet of the throttling device in the refrigerant circulation loop is a first connecting pipeline; and the condenser is arranged on the first connecting pipeline. The refrigeration device further includes an auxiliary heat exchange branch, and the auxiliary heat exchange branch includes a condensing heater for heating a heating region, and is arranged on the first connecting pipeline in parallel; and a first valve device is further arranged on the auxiliary heat exchange branch.

Abstract: A compressor unit of a cryogenic refrigeration device includes a compression chamber that is connectable via a transfer line to an expander unit. A piston is configured to alternately compress and decompress a gaseous working agent in the compression chamber. An electromagnetic actuator includes a stator assembly with a driving coil that is wound about the longitudinal axis and that is enclosed within a toroidal back iron except for a coaxial cylindrical gap in a radially outward facing surface. A movable assembly connected to the piston includes two movable permanent magnets separated by a ferromagnetic spacer radially exterior to the stator assembly. The movable magnets are magnetized parallel to the longitudinal axis and opposite to one another such that an alternating electrical current in the driving coil causes the movable assembly to parallel to the longitudinal axis to periodically drive the piston into and out of the compression chamber.

Abstract: The invention relates to a system for monitoring the position of the valve needle of an expansion valve, having an expansion valve having a valve seat; a valve needle which is configured so as to be convertible axially between a first position in which the valve needle is received by the valve seat and closes the expansion valve, and a second position in which the valve needle is axially spaced apart from the valve seat and the expansion valve is at least partially opened; wherein the expansion valve has a magnet which is fixedly assigned to the valve needle such that the magnet is axially movable conjointly with the valve needle; and has a Hall sensor, wherein the Hall sensor is fixedly assigned to the valve seat and, by means of the flux density vector of the magnet, is configured for determining directly the absolute axial position of the valve needle.

Abstract: A two-stage pulse tube cryocooler, having compact size, less vibration and lower manufacturing cost is disclosed, in which at least a first stage of the cryocooler is coaxial, but in which first and second stages may be coaxial by locating circular regenerators of each stage inside of corresponding annular pulse tubes. A second stage circular regenerator is installed below a first stage regenerator. This configuration allows preassembly of the regenerator assembly and a base tube assembly in one or more stages. The pulse tube, which is annular, is coaxially formed with an outside surface of the assembled regenerator assembly and an inner surface of the outer tube of the base tube assembly after installation of the regenerator assembly.

Abstract: An evaporatively cooled refrigeration system includes a refrigerant, a gas/liquid separator, an expansion valve in fluid connection to the gas/liquid separator, an evaporator to receive the refrigerant from the expansion valve, a compressor configured to compress the refrigerant in fluid connection to the evaporator, and a gas cooler in fluid connection to the compressor. The gas cooler includes an indirect heat exchanger to convey the refrigerant and facilitate heat from the refrigerant and a spray system to spray an evaporative coolant on the indirect heat exchanger. Evaporative cooling provided by the evaporative coolant on the coil is configured to cool the refrigerant below a dry bulb ambient air temperature.

Abstract: Apparatus and methods to create and/or enhance thermal gradients in a body of cryogenic liquid contained in a vessel that is actively cooled by a cryocooler is provided. With such apparatus and/or methods temperature in one part of the body of liquid can be made lower than the temperature in another part of the body of liquid. Thus, the apparatus and/or methods enables cryogenic operation of a device at a temperature that is below that of the boiling point of the cryogenic liquid while simultaneously allowing the liquid to be at a pressure greater than atmospheric pressure to obviate the risk of air entering the cryogenic space. These apparatus and/or methods may find use in cryogenic systems used for magnetic resonance imaging, cyclotrons for radioisotope generation, cyclotrons for radiation therapy, high-energy particle accelerators, magnet systems for crystal growth and the like.

Abstract: A heat control device is provided in a vehicle including a first thermal circuit that circulates a coolant and a second thermal circuit that circulates a refrigerant while changing the state of the refrigerant and is able to exchange heat with the first thermal circuit. When there is a heat discharge request from the second thermal circuit, the heat control device includes a determination unit configured to determine an amount of operation of each of a plurality of units which are used to discharge heat such that the heat discharge request is satisfied and the sum of power consumption values of the plurality of units is minimized.

Abstract: The present invention aims to alleviate the risk of leakage of refrigerant from a refrigerant circuit and particularly at the utilization side of the refrigerant circuit without the need to provide a dedicated bypass for refrigerant leakage prevention. A refrigerant system is configured such that, when a refrigerant leakage detection sensor detects refrigerant leakage, a controller is configured to adjust a opening degree of a bypass expansion valve independently of a pressure and/or temperature value detected by a sensor. A method of controlling a refrigerant system is also provided.