A liquid chiller system utilizing a refrigerant capable of possessing a liquid state and a gas/vapor state, the refrigerant being cycled through a closed loop assembly of a compressor, a condenser, an evaporator, and an expansion valve external to the evaporator. The compressor may have a lower integrated reservoir and the evaporator may have an upper dedicated reservoir such that separate, dedicated separator or receiver vessels are not required. The condenser may be positioned above the eccentric evaporator such that liquid refrigerant flows by gravity from the condenser to the evaporator.

An accumulator and oil separator device includes a housing having a cavity, an oil separator unit disposed in the cavity and designed to separate oil from a refrigerant and oil mix received from a compressor and to output the oil into the cavity. The accumulator and oil separator device further includes an accumulator inlet tube to carry a received refrigerant into the cavity. The accumulator and oil separator device also includes an accumulator outlet tube to output the received refrigerant and the oil from the cavity.

A transportation refrigeration system includes an enclosure, and at least two compartments within the enclosure to be conditioned to two distinct temperatures. A refrigeration is circuit associated with each of the at least two compartments. A first refrigeration circuit includes a first compressor, a first evaporator, and a first expansion valve. A second refrigeration circuit includes a second compressor, a second evaporator, and a second expansion valve. The first and second refrigeration circuits utilize a common condenser, with first inlets into the condenser from the first circuit connected to a first flow passage and second inlets from the second circuit connected to second flow passages. First and second outlets are connected to the first and second flow passages. The first and second flow passages are staggered in a direction perpendicular to a flow passage across the condenser. A heat exchanger is also disclosed.

An air conditioner comprises a compressor configured to have an inlet, through which a refrigerant is sucked in, the sucked refrigerant being compressed by the compressor, and an outlet, through which the compressed refrigerant is discharged, a four-way valve configured to switch flow paths in cooling and heating operations, the four-way valve having a valve body, a D port protruding from the valve body in a first direction to be connected to the outlet, and an S port 26 protruding from the valve body in a second direction, which is opposite to the first direction, to be connected to the inlet, and a compressor pipe having a discharging pipe to connect the outlet and the D port and a sucking pipe to connect the inlet and the S port, one of the discharging pipe and the sucking pipe has two curved portions and the other has one curved portion.

An air-conditioning apparatus includes a main circuit in which a compressor, a refrigerant flow switching device, a load side heat exchanger, a load side expansion device, and a plurality of heat source side heat exchangers are sequentially connected. When the plurality of heat source side heat exchangers are used as condensers, the first heat source side heat exchanger and the second heat source side heat exchanger are connected in series. When the plurality of heat source side heat exchangers are used as evaporators, the first heat source side heat exchanger and the second heat source side heat exchanger are connected in parallel. A distribution adjustment header on an inlet side of at least either the first heat source side heat exchanger or the second heat source side heat exchanger when the plurality of heat source side heat exchangers are used as evaporators.

A heat exchanger and an air conditioning system having same, wherein heat exchanger includes a first heat exchanger core and a second heat exchanger core, the first heat exchanger core including first heat exchange tubes and first fins, and the second heat exchanger core including second heat exchange tubes and second fins. The angle between the first heat exchanger core and the second heat exchanger core is ?, the length of the first heat exchange tube is TL, the refrigerant circulation area of the first heat exchange tube is S, the width of the first fin is FW, the density of the first fin is FP, the height of the first fin is FH, the width of the first heat exchanger core is ML, the length of the second heat exchange tube is tl, the refrigerant circulation area of the second heat exchange tube is s, the width of the second fin is fw, the density of the second fin is fp, the height of the second fin is fh, the width of the second heat exchanger core is ml, and 0.016?(TL?ML?FW?FP?FH?s?cos ?)/(tl?ml?fw?fp?fh?S)?64. In this way, the water drainage performance of the heat exchanger is improved, and the problem of water being blown from the heat exchanger is solved.

A heat exchanger includes a plurality of heat transfer tubes, a liquid header distributor, and a gas header distributor. The heat transfer tubes include U-shaped bent portions. The heat exchanger includes a heat exchanger core. A relationship between the liquid header distributor and the plurality of heat transfer tubes is established such that 9?? is satisfied, where Lh [m] is the length of the liquid header distributor, Lb [m] is the length of the shortest one of the heat transfer tubes, and ? is the ratio of the length Lb of the shortest heat transfer tube to the length Lh of the liquid header distributor and is expressed by ?=Lb/Lh.

A discharge gas manifold having a main conduit, an end feeder conduit, and at least one intermediate feeder conduit, wherein the at least one intermediate feeder conduit contains a portion, adjacent to the main conduit, that forms an angle between 0-60 with the axis of the main conduit.

An collective device for switching refrigerant flow arranged between an indoor device and an outdoor device is provided; which includes multiple high-pressure valves; multiple low-pressure valves; a high-pressure header; a low-pressure header; a high-pressure gas pipe connecting each high-pressure valve and the high-pressure header; and a low-pressure gas pipe connecting each low-pressure valve and the low-pressure header, wherein the multiple high-pressure valves are arranged next to each other in a first direction perpendicular to a vertical direction, the multiple low-pressure valves are arranged next to each other in the first direction, and the low-pressure valves, the low-pressure header, and the low-pressure gas pipe are arranged on one side in a second direction perpendicular to the vertical direction and the first direction with respect to the high-pressure valves, the high-pressure header, and the high-pressure gas pipe.

A dehumidifier is provided, the dehumidifier includes a housing, and a condenser and an evaporator arranged inside of the housing that are each formed into a generally circumferentially extending C shape and arranged to be generally coaxial and aligned with one another. A compressor and a fan are each centrally located in the housing, with the fan located above the compressor. A collection pan is located under the evaporator, and a water tank is located above the condenser, evaporator, and the compressor. A pump is provided to direct the collected water to the water tank.