|| List of recent Refrigerant-related patents
|Securable ice pack device|
An ice pack device that may be secured to an appendage to be treated. The ice pack device may include a body portion that includes an ice pack compartment.
|Cryo-ablation refrigerant distribution catheter|
Described herein are methods and devices for performing ablation via a cryoablation catheter. An ablation catheter having a cyroablation chamber at its distal end can be used to achieve a uniform ablation band in or around the pulmonary veins.
|Scroll compression device|
A scroll compression mechanism 11 for compressing refrigerant and a driving motor 13 that is connected to the scroll compression mechanism 11 through a driving shaft 15 and drives the scroll compression mechanism 11 are accommodated in a casing 3, the scroll compression mechanism 11 is supported in the casing 3 by a main frame 21, a stator 37 of the driving motor 13 is directly or indirectly supported in the casing 3, and the driving shaft 15 is connected to a rotor 39 of the driving motor 13 and supported in the casing 3 by a bearing plate 8, and a lower end of the driving shaft 15 is supported by a thrust plate 6 provided to the bearing plate 8, and the center position of the rotor 39 is located to be lower than the center position of the stator 37.. .
|Refrigerant compressor and refrigeration cycle apparatus using the same|
A refrigerant compressor includes a sealed case 9, a compression mechanism 2 and a motor part 16 contained in the sealed case, and an oil reservoir 53 formed in a lower portion of the sealed case. The refrigerant compressor further includes an oil supply pipe 62 which links the oil reservoir and a suction side of the compression mechanism by passage and introduces oil in the oil reservoir to the suction side, an oil supply amount adjusting means 61 which is provided on the oil supply pipe and adjusts an amount of oil supply supplied to the suction side, a rotational speed detecting means which detects a rotational speed of the motor part, and an oil supply amount controlling unit 80 which controls the oil supply amount adjusting means according to a rotational speed detected by the rotational speed detecting means.
|Suction header arrangement for oil management in multiple-compressor systems|
A refrigeration system with two or more compressors configured to compress a flow of refrigerant with oil entrained therein. A suction flow piping arrangement is configured to supply a flow of refrigerant and oil to the two or more compressors.
|Nmr detection module|
An nmr (nuclear magnetic resonance) detection module (such as an nmr probe) mounted in a vacuum vessel permits a transmit/receive coil to be cooled efficiently and to be placed closer to a sample container. The nmr detection module includes a core module (detection module) (54) consisting of a refrigerant block (118) and a transmit/receive coil formed on the inner surface of a detection hole (130).
An armature of a linear motor includes a plurality of cooling pipe storage holes formed along a longitudinal direction of a core, and a plurality of cooling pipes stored vertically in the cooling pipe storage holes and having a meander shape. The cooling pipes vertically adjacent to each other are arranged such that inlets and outlets of the cooling pipes are alternately connected in parallel to a refrigerant inlet and a refrigerant outlet in order to allow a refrigerant to flow in the reverse direction..
|Heat exchange apparatus|
Provided is a heat exchanger capable of performing heat exchange between a refrigerant and air continuously even if frost forms thereon. A heat exchanger (1) that exchanges heat between a refrigerant and air includes: a plurality of heat transfer tubes (3) extending in an internal flow direction in which the refrigerant flows; and a corrugated member (4) having a corrugated shape.
The invention relates to a condenser, in particular a condenser cooled by a coolant, said condenser consisting of at least one tube/fin block having several flat tubes, each flat tube having a plurality of flow channels that extend adjacent to one another in the tube transverse direction and define a refrigerant-side hydraulic diameter (dh refrigerant). At least one respective intermediate element defining a coolant-side hydraulic diameter (dh coolant) is arranged in the region of the flat tubes.
A reciprocating compressor is provided. Bearing holes of a fluid bearing of the compressor may be positioned correspond to a full reciprocating region of a piston, to reduce/eliminate frictional loss and/or abrasion between a cylinder and the piston.
|Refrigeration cycle apparatus|
A refrigeration cycle apparatus (1a) includes: a main circuit (2) composed of an evaporator (25), a first compressor (21), an intercooler (8), a second compressor (22), and a condenser (23) which are connected in this order; and an evaporation-side circulation path (5) that allows a refrigerant liquid retained in the evaporator (25) to circulate via a heat exchanger for heat absorption (6). The intercooler (8) is a heat exchanger that allows a refrigerant vapor compressed by the first compressor (21) to be cooled by the refrigerant liquid.
A refrigeration apparatus (air conditioner (1a)) includes: a vapor channel (2a) that directs a refrigerant vapor from an evaporator (25) to a condenser (23); a liquid channel (2b) that directs a refrigerant liquid from the condenser (23) to the evaporator (25); a first circulation path (4) that allows the refrigerant liquid retained in the evaporator (25) to circulate via a first heat exchanger (indoor heat exchanger (31)); and a second circulation path (5) that allows the refrigerant liquid retained in the condenser (23) to circulate via a second heat exchanger (outdoor heat exchanger (33)). A first switching means and a second switching means are provided on the first circulation path (4) and the second circulation path (5).
A refrigeration cycle apparatus (1a) includes: an evaporator (23) that retains a refrigerant liquid and that evaporates the refrigerant liquid therein; a condenser (22) that condenses a refrigerant vapor therein and that retains the refrigerant liquid; a vapor channel (2a) that is provided with a compressor (21) and that directs the refrigerant vapor from the evaporator (23) to the condenser (22); a liquid channel (2b) that directs the refrigerant liquid from the condenser (22) to the evaporator (23); a condensation-side circulation path (4) that allows the refrigerant liquid retained in the condenser (22) to circulate via a heat exchanger for heat release (41) and that is provided with a condensation-side pump (45) at a position upstream of the heat exchanger for heat release (41); and a back-flow path (7) that directs a portion of the refrigerant liquid flowing in a section downstream of the heat exchanger for heat release (41) in the condensation-side circulation path (4) to a section upstream of the condensation-side pump (41) in the condensation-side circulation path (4) or to a bottom of the condenser (22).. .
In a refrigerator having a thermally insulating housing which surrounds a storage chamber and having a refrigerant circuit which comprises a compressor, a condenser, a restrictor and an evaporator which cools the storage chamber, the restrictor is arranged at least partially on a side wall of the housing.. .
|Transcritical refrigerant vapor system with capacity boost|
A refrigerant vapor compression system and method of operation are disclosed wherein the first (30a) and second (30b) compression stages of a two stage compression device are selectively configurable in a first arrangement and a second arrangement. In the first arrangement, the first and second compression stages operate in a series refrigerant flow relationship.
|Mechanical subcooling of transcritical r-744 refrigeration systems with heat pump heat reclaim and floating head pressure|
A transcritical r-744 refrigeration system with an energy efficiency ratio of a level comparable to that of refrigeration systems using common refrigerants by mechanically subcooling of the r-744 refrigerant. Mechanical subcooling increases the refrigeration capacity without increasing the power consumption of the refrigeration system's compressors.
|Cooling apparatus and control method thereof|
A cooling apparatus includes a storage compartment, an evaporator to cool air in the storage compartment by evaporating a refrigerant, a compressor to compress the refrigerant evaporated by the evaporator, an air blower to supply the air cooled by the evaporator to the storage compartment and to remove frost formed on the evaporator, a storage temperature sensor to sense a temperature of the storage compartment, a driving unit to drive the compressor and the air blower, and a controller to perform a defrosting operation of operating the air blower to remove frost formed on the evaporator when a cooling operation of cooling the storage compartment is terminated and to perform the cooling operation, wherein the controller defers, when the defrosting operation is being performed, operation of the compressor, even if the temperature of the storage compartment is greater than or equal to the storage upper limit temperature.. .
|Motor vehicle climate control system|
A vehicle climate control system operable in a winter mode and a summer mode includes an engine-exhaust-driven hot heat transfer fluid (htf) circuit coupled with a heater core during the winter mode to provide passenger cabin heating, and thermal energy stored in a standalone hot phase change material (pcm) battery in the hot htf circuit may provide surge heating at or prior to engine start. The hot htf circuit and a cold htf circuit including an htf cooler drive two adsorbers in the summer mode, thereby providing passenger cabin cooling in conjunction with a refrigerant circuit which includes a condenser, evaporator, expansion valve, and standalone cold pcm battery.
|Contaminant separator for a vapor-compression refrigeration apparatus|
Apparatuses and methods are provided for facilitating cooling of an electronic component. The apparatus includes a vapor-compression refrigeration system, which includes an expansion component, an evaporator, a compressor and a condenser coupled in fluid communication.
|Sound enclosure for a compressor|
A sound enclosure of a compressor to attenuate an operational sound level of the compressor is disclosed. The sound enclosure may be configured to generally enclose the compressor and attenuate radiantly emitted sound by the compressor.
|Azeotrope-like compositions of pentafluoroethane and trifluoroiodomethane|
Provided are azeotrope-like compositions comprising heptafluoropropane and trifluoroiodomethane and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agents, fire suppressant compositions, and aerosol propellants.. .
|Inlet air flow guide for acdx fan coil|
An inlet air flow guide for a condensing unit of an air cooled direct expansion (acdx) air conditioning unit. The flow guide has a panel having at least a portion spaced from a surface of the condensing unit to define a plenum for cooling air to enter the condensing unit from one side.
An air conditioner (1a) as a refrigeration apparatus includes: a refrigerant circuit (2) including an evaporator (25), a first compressor (21), a vapor cooler (3), a second compressor (22), and a condenser (23) that are connected in this order; a heat release circuit (4) that allows a heat medium to circulate between the condenser (23) and a first heat exchanger (5) that releases heat to the atmosphere; and a heat absorption circuit (6) that allows a heat medium to circulate between the evaporator (25) and a second heat exchanger (7). The vapor cooler (3) is a heat exchanger that exchanges heat between a refrigerant vapor compressed by the first compressor (21) and the heat medium flowing in the heat release circuit (4) or the heat medium flowing in the heat absorption circuit (6)..
In a turbo refrigerator in which: a gas-phase refrigerant from an evaporator is compressed by a turbo compressor and then condensed by a condenser; the obtained liquid-phase refrigerant is evaporated by the evaporator; and a cooling target is cooled down by evaporation heat of the liquid-phase refrigerant, the compressor is a back-to-back two-stage centrifugal type, and the condenser is provided at a position outside a compressor rear stage so as to overlap the compressor rear stage when viewed from each of an axial direction and a radial direction. With this, the pressure loss of a vapor refrigerant is eliminated, and the deterioration in efficiency can be suppressed.
|Low gwp heat transfer compositions|
The present invention relates, in part, to heat transfer compositions and methods that include (a) from about 65% to about 75% by weight of hfc-32; (b) from about 15% to about 35% by weight of a compound selected from unsaturated —cf3 terminated propenes, unsaturated —cf3 terminated butenes, and combinations of these; and (c) from greater than about 0% to less than about 10% by weight of co2, provided that the amount of component (c) is effective to improve heating capacity of the composition and reduce the defrost cycle in refrigerant applications, as compared to compositions lacking this component.. .
|Apparatus for improving refrigeration capacity|
A refrigeration, air conditioning or other cooling system is disclosed. The refrigeration system includes a refrigerant storage tank fluidly connected to a refrigerant expansion device which is fluidly connected to a refrigerant evaporator for absorbing ambient heat, a refrigerant vapor compressor fluidly connected to the refrigerant evaporator and a refrigerant condenser fluidly connected to the refrigerant compressor and the refrigerant storage tank.
|Motor vehicle climate control system|
A vehicle climate control system includes a thermal-adsorption heat pump driven by engine exhaust heat, the heat pump including two adsorbers asynchronously switching between adsorbing and desorbing modes, each adsorber coupled with a corresponding antifreeze tank via a plurality of refrigerant-containing wick chambers. Cold heat transfer fluid (htf) flows through the adsorber during the adsorbing mode which causes evaporation of refrigerant from the wick chambers, thereby cooling antifreeze, whereas hot htf flows through the adsorber during the desorbing mode which causes condensation of refrigerant at the wick chambers, thereby heating antifreeze.
|Air conditioner and control method thereof|
An air conditioner that improves efficiency of an inverter compressor by injecting an intermediate pressure refrigerant to the inverter compressor during heating or cooling and a control method thereof are provided.. .
|Scroll compression device|
A scroll compression device that is adaptable to a larger elimination capacity by using a balancer of magnetic material is provided. A scroll compression mechanism 11 for compressing refrigerant and a driving motor 13 that is connected to the scroll compression mechanism 11 through a driving shaft 15 and drives the scroll compression mechanism 11 are accommodated in a casing 3, the scroll compression mechanism 11 is supported in the casing by a main frame 21, a rotor 39 of the driving motor 13 is connected to the driving shaft 15, the driving shaft 15 is supported in the casing by a bearing plate 8, an upper balancer 63 of magnetic material is secured onto the shaft above the stator 37 of the driving shaft 15, a lower balancer 77 of non-magnetic material is secured to the lower end of the rotor 39, and an auxiliary balancer 64 of non-magnetic material is secured in the gap between the upper end of the rotor 39 and the upper balancer 63..
|Scroll compression device|
A scroll compression mechanism 11 for compressing refrigerant and a driving motor 13 that drives the scroll compression mechanism 11 are accommodated in a casing 3, the scroll compression mechanism 11 is supported in the casing 3 by a main frame 21, the driving shaft 15 is connected to a rotor 39 of the driving motor 13 and supported in the casing 3 by a bearing plate 8, a pickup 45 is connected to an oil supply path 41 extending in an up-and-down direction in the driving shaft 15, and intercommunication paths 38b, 54a through which lubrication oil scraped up by the pickup 45 and supplied to respective lubrication sites is returned to the lower side of the driving motor 13 are provided between the stator 37 and the spacer ring 38 or between the spacer ring 38 and the casing 3.. .
|Method for adjusting magnetic resonance imaging apparatus and superconductive magnet excitation dock|
An adjustment method of a magnetic resonance imaging apparatus includes: a cooling and excitation step in which work of transporting a superconducting magnet to a facility different from a facility where the superconducting magnet is to be installed, cooling a superconducting coil of the superconducting magnet with a refrigerant, and supplying a current from an external power supply for excitation is repeated until a predetermined rated current flows; a demagnetization and transportation step of demagnetizing the superconducting coil and transporting the superconducting magnet to the facility where the superconducting magnet is to be installed in a state where the superconducting coil is cooled by the refrigerant; and an installation step of installing the superconducting magnet in the facility where the superconducting magnet is to be installed and supplying a predetermined rated current from an external power supply to the superconducting coil in order to excite the superconducting coil.. .
A power converter including: a plurality of semiconductor devices forming a power conversion circuit; a base section to which the plurality of semiconductor devices are attached; and radiating fins dissipating heat generated from the semiconductor devices into outside air, in the power converter in which the direction of the flow of a refrigerant flowing into the radiating fins changes depending on the operation status of the power conversion circuit, the shape of each radiating fin changes in such a way that the cross-sectional area of a channel of the refrigerant on the outflow side becomes smaller than the cross-sectional area of the channel of the refrigerant on the inflow side in the radiating fins depending on the direction of the flow of the refrigerant.. .
|Vehicle temperature control apparatus and in-vehicle thermal system|
A vehicle temperature control apparatus for controlling temperature of a temperature control object, which is at least one of inside air of a vehicle compartment and a vehicle component, includes a heat capacitive element capable of storing heat, a refrigeration cycle in which heat is absorbed from a low temperature side and is dissipated to a high temperature side, a heat exchanger that causes the heat capacitive element to exchange heat with refrigerant of the refrigeration cycle, and a heat dissipation portion which dissipates heat in the refrigerant of the refrigeration cycle to the temperature control object. Thus, a temperature control by using the heat capacitive element can be effectively performed..
|Ice shelf product display unit|
An ice shelf product display unit has a vertical support wall, a plurality of shelves extending out from the support wall, and a housing extending from the lower end of the support wall. The housing encompasses refrigeration equipment and components.
|Heat pump system for a laundry dryer and a method for operating a heat pump laundry dryer|
A laundry dryer is provided with a heat pump system including an air stream circuit (10) for an air stream and a closed refrigerant circuit (12) for a refrigerant. The air stream circuit (10) includes a heat pump condenser (18), a heat pump evaporator (20) and a laundry drum (26).
A cryogenic refrigerator includes a displacer that is reciprocably mounted within a cylinder; a spool valve that is connected to the compressor and performs switching between an intake mode where a high-pressure refrigerant gas is supplied from the compressor to the cylinder and an exhaust mode where a low-pressure refrigerant gas within the cylinder is made to flow back to the compressor; and a drive unit that drives the spool valve. The spool valve has a valve body, and a drive rod that moves relative to the valve body and is integrated with the spool.
|Refrigerant scroll compressor for motor vehicle air conditioning systems|
A refrigerant scroll compressor for a motor vehicle air conditioning system having a fixed scroll, an orbiting scroll engaging with the fixed scroll, wherein the fixed scroll and the orbiting scroll cooperate to compress a refrigerant gas. An intermediate pressure chamber is disposed adjacent the orbiting scroll, an oil return duct provides fluid communication between the intermediate pressure chamber and a high pressure area of the refrigerant scroll compressor, and at least one intermediate pressure duct is formed in one of the orbiting scroll and fixed scroll and is in fluid communication with the intermediate pressure chamber..
|Method of active oil management for multiple scroll compressors|
A method of operating a refrigeration system uses a plurality of compressors in connected parallel. The method includes returning refrigerant and oil to the compressors, the refrigerant also having oil entrained therein, separating the oil entrained in the refrigerant, and returning more of the oil entrained in the refrigerant to a lead compressor of the plurality of compressors regardless of whether the lead compressor is operating.
|Electric machine - evaporative cooling|
An electric machine comprises a rotor, preferably having permanent magnets, although other field generation means are available, and a stator. The stator has coils wound on stator bars for interaction with the magnetic field of the rotor across an air gap defined between them.
|Heating and/or cooling system and related methods|
A method of heating and/or cooling an area to a desired temperature comprising using a heat pump having an evaporator, a compressor, a condenser and an expansion control means each connected by a refrigerant pipe work system and the method comprising monitoring the temperature of an environment in which the evaporator is operating and using a system controller to vary in response to the monitored temperature, the temperature at which gas condenses to a fluid within the condenser to keep it as low as possible whilst maintaining the condensing temperature a predetermined amount above the desired temperature and/or also varying in response to the monitored temperature, the temperature at which a liquid expands to a gas within the evaporator in order to reduce the difference between the evaporating and condensing temperatures.. .
|Condenser/accumulator and systems and operation methods|
A condenser/accumulator (60) has a shell (62). A coolant flowpath extends from a coolant (144) inlet to a coolant outlet (146).
Provided is a heat exchanger. The heat exchanger includes a refrigerant tube through which a refrigerant flows and a fin having at least two tube through holes in which the refrigerant tube is inserted.
Provided is a heat exchanger. The heat exchanger includes a refrigerant tube through which a refrigerant flows and a fin having at least two tube through holes in which the refrigerant tube is inserted.
A cooling apparatus that cools a charger for charging a storage battery upon reception of a supply of power from a power supply includes: a compressor that circulates a refrigerant; a heat exchanger and a heat exchanger that perform heat exchange between the refrigerant and outside air; an expansion valve that reduces a pressure of the refrigerant; a heat exchanger that performs heat exchange between the refrigerant and air-conditioning air; a cooling unit provided on a path along which the refrigerant flows between the heat exchanger and the expansion valve to cool the charger using the refrigerant; a refrigerant passage through which the refrigerant flows between the compressor and the heat exchanger; a refrigerant passage through which the refrigerant flows between the cooling unit and the expansion valve; and a connecting passage connecting the refrigerant passage and the refrigerant passage.. .
|Plate-based adsorption chiller subassembly|
A subassembly for an adsorption chiller includes an adsorption component that includes a plurality of plates arranged in a stack. Refrigerant passages are defined between refrigerant sides of adjacent pairs of the plates in the stack.
|Geothermal rail cooling and heating system|
A geothermal rail cooling and heating system is a reversible system process that accelerates heat transfer between the steel rail used in railway track and the adjacent earth. It is comprised of the rail heat exchangers specially shaped to fit tightly inside the rail web, a refrigerant cycling on its physical condensing and evaporative characteristics, a mechanical and power supply system, and an underground tubing loop system for heat dissipation or absorption.
An outdoor unit is configured to include a compressor and a heat source side heat exchanger. Indoor units are configured to include first expansion devices and use side heat exchangers, and air-condition an air-conditioned space.
|Load estimator for control of vapor compression cooling system with pumped refrigerant economization|
A cooling system has a direct expansion mode and a pumped refrigerant economizer mode and a controller. The controller includes a load estimator that estimates real-time indoor load on the cooling system and uses the estimated real-time indoor load to determine whether to operate the cooling system in the pumped refrigerant economizer mode or in the direct expansion mode..
|Vehicle air-conditioning device|
In vehicle air-conditioning devices including a refrigerant circuit having a compressor, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger that are connected by refrigerant pipes to form a refrigeration cycle; an indoor air-sending device that supplies air to the indoor heat exchanger; and an outdoor air-sending device that supplies air to the outdoor heat exchanger, the refrigerant circuit is installed under the floor of a vehicle and uses carbon dioxide as the refrigerant.. .
|Air-conditioning apparatus including unit for increasing heating capacity|
An air-conditioning apparatus including a check valve in a passage between a first flow switching device and a suction side of a compressor, an expansion valve midway of a liquid extension piping, and an additional unit having a first bypass and a second bypass that are branched off from a passage between an indoor unit and the liquid expansion valve, and are connected to a passage between the check valve and the suction side of the compressor. The first bypass has, midway thereof, a first bypass expansion valve capable of controlling a throughput of refrigerant and an auxiliary heat exchanger that has a heat source different from the refrigerant, the auxiliary heat exchanger functioning as an evaporator heating the refrigerant flowing in the first bypass.
|Multi air-conditioning apparatus|
A correspondence determination operation is performed. The correspondence determination operation differs a direction of distribution or a flow rate of a refrigerant flowing in one or some of use units among a plurality of use units to that of the other use units and determines, on the basis of a refrigerant temperature of the use unit, a location of a non-correspondence between a branch port that is connected to the use unit with refrigerant pipes and a set branch port that is obtained in accordance with the wire connection..
|Methods and systems to increase evaporator capacity|
Embodiments to increase the capacity of the evaporator of a vapor-compression refrigeration system are described. The refrigeration system may be configured to have a first stage suction line heat exchanger and a second stage suction line heat exchanger.
|System and method for monitoring compressor floodback|
A system and method for a compressor includes a compressor connected to an evaporator, a suction sensor that outputs a suction temperature signal corresponding to a suction temperature of refrigerant entering the compressor, and a control module connected to the suction sensor. The control module determines a saturated evaporator temperature, calculates a suction superheat temperature based on the saturated evaporator temperature and the suction temperature, and monitors a floodback condition of the compressor by comparing the suction superheat temperature with a predetermined threshold.
|Method of operating a heat pump dryer and heat pump dryer|
A heat pump dryer is provided which includes a process air circuit and a heat pump unit having a primary refrigerant evaporator for cooling process air, a primary refrigerant condenser for heating process air, an auxiliary refrigerant evaporator arranged outside the process air circuit and connected between the primary refrigerant evaporator and a compressor of the heat pump unit, and at least one auxiliary fan adapted to impinge an air stream at the auxiliary refrigerant evaporator. At least one waste heat generating component of the heat pump dryer, the auxiliary refrigerant evaporator and the auxiliary fan are mutually arranged so that the auxiliary fan is adapted to impinge ambient air heated up by heat released from said waste heat generating component at the auxiliary evaporator, and/or at least a temperature sensor is arranged outside the process air circuit and provided for detecting the temperature of the ambient air around the location where the auxiliary refrigerant evaporator is arranged..
|Cooling apparatus and control method thereof|
Disclosed herein are a cooling apparatus and a control method thereof. The cooling apparatus using latent heat of a refrigerant includes evaporators evaporating the refrigerant, a compressor compressing the evaporated refrigerant to a high pressure, defrosting heaters removing frost accumulated on the evaporators, a driving unit providing driving current selectively to the compressor or the defrosting heaters, and a control unit controlling the driving unit to provide driving current to the compressor in a cooling operation mode and controlling the driving unit to provide driving current to the defrosting heaters in a defrosting operation mode.
|Combined heat and power heat pump|
A method of operating a heating, ventilation, and/or air conditioning (hvac) system includes operating a device to produce at least one of electricity and rejected heat and at least one of (1) powering a component of the hvac system using the electricity produced by the electricity generating device and (2) heating the refrigerant of the hvac system using at least a portion of the rejected heat.. .
|Service device for vehicle air conditioning systems, and method for operating same, in particular for the self-cleaning type|
A servicing device and method for operating a servicing device for vehicle air-conditioning systems in particular for the self-cleaning thereof, the servicing device is equipped with an emptying device and a filling device for the drawing off of the refrigerant/compressor oil mixture from the refrigerant circuit system of a vehicle air-conditioning system and for the refilling of the vehicle air-conditioning system with refrigerant and compressor oil. A vacuum pump is used for the residual emptying of the refrigerant circuit system of the vehicle air-conditioning system and/or of the servicing device.
An air conditioner is provided. The air conditioner may include a compressor, a condenser, an evaporator, a receiver storing a portion of a refrigerant passing through the condenser, an accumulator receiving refrigerant stored in the receiver and refrigerant passing through the evaporator to separate gas refrigerant from refrigerant introduced therein and supply the gas refrigerant to the compressor, and a bypass line supplying refrigerant from the receiver to the accumulator.
|Multiple organic rankine cycle system and method|
Systems and methods are provided for the use of systems that recover mechanical power from waste heat energy using multiple working expanders with a common working fluid. The system accepts waste heat energy at different temperatures and utilizes a single closed-loop circuit of organic refrigerant flowing through all expanders in the system where the distribution of heat energy to each of the expanders allocated to permit utilization of up to all available heat energy.
|Heat pump laundry dryer|
A laundry dryer is provided with a heat pump system. The heat pump system comprises a closed refrigerant circuit (10) for a refrigerant and a drying air circuit (12) for drying air.
|Home laundry dryer|
A laundry dryer includes a heat-pump assembly configured to cool airflow coming from a laundry container and then to heat airflow returning to the laundry container. The heat-pump assembly has a first heat exchanger configured to transfer heat from the airflow arriving from the laundry container to a low-pressure refrigerant, and a second heat exchanger configured to transfer heat from a high-pressure refrigerant to the airflow directed back into the laundry container.
|Method of making a heat exchanger with an enhance material system|
The disclosure relates to a method of manufacturing a heat exchanger assembly with an enhanced material system. The enhanced material system includes refrigerant tubes extruded from a high purity aa3000 series alloy billet having about 1% by weight (wt %) mn and pre-braze treated with either a reactive zinc flux or a mixture of elemental zinc powder and a controlled atmosphere brazed (cab) flux applied by glass plasma or organic binder, such as an organic binder, fins formed from modified a aa3003 alloy having less than 0.05 wt % cu and from 1.2 to 1.8% wt % zn, and header manifolds manufactured from a aa3000 series alloy with a aa4000 series cladding having 0.9 to 1.1 wt % zn.
|Piping structure of cooling device, method for making the same, and method for connecting pipes|
In a piping structure of a cooling device using an ebullient cooling system, the cooling performance of the cooling device is degraded if the pipe is provided with flexibility, therefore, a piping structure of a cooling device according to an exemplary aspect of the invention includes a first tubular part with a hollow portion through which a refrigerant used in the cooling device flows; wherein the first tubular part is made of metal materials; and the surface roughness of the inner surface of the first tubular part is less than or equal to the size of a condensation nucleus for the refrigerant.. .
A heat exchanger, in particular for a heating or air-conditioning system in a motor vehicle, having an evaporator unit to which a refrigerant medium can be supplied via a distribution unit and through which said refrigerant medium flows and around which said refrigerant medium flows after only one diversion (two-block design) at the bottom in a diversion unit, wherein the distribution unit is designed to effect a uniform distribution of the refrigerant medium over the hill width of the evaporator.. .
|Cryogenic co2 separation using a refrigeration system|
A refrigeration system for condensation of carbon dioxide (co2) in a flue gas stream, the system includes a refrigeration circuit, a flue gas treatment system that includes a flue gas compressor, a flue gas adsorption drier, and a refrigeration system for condensation of co2; and a method for condensation of co2 in a flue gas stream using a circulating stream of an external refrigerant.. .
|Refrigerating cycle system and refrigerator having the same|
A refrigerating cycle system and a refrigerator having the same are provided. The refrigerating cycle system includes a condenser, a first capillary tube unit configured to receive refrigerant that has passed through the condensing unit, a gas-liquid separating unit configured to separate the refrigerant that has passed through the first capillary tube unit into liquid refrigerant and gaseous refrigerant, a first evaporator unit configured to receive the liquid refrigerant separated at the gas-liquid separating unit, a liquid refrigerant removal unit configured to receive the gaseous refrigerant separated at the gas-liquid separating unit and a first compressor unit configured to receive the gaseous refrigerant from the liquid refrigerant removal unit.
|Oil separator and refrigeration cycle apparatus|
The oil separator 11 separates oil in the refrigerant discharged from the compressor 4 and returns the oil back to the compressor 4. And includes a tank 21 into which refrigerant discharged from the compressor 4 flows, a float 24 whose inside is hollow formed by welding a plurality of members and made vertically movable according to the changes in the oil surface 20 inside the tank 21, and a needle valve 29 that returns oil inside the tank 21 to the compressor 4 according to the vertical movement of the float 24.
|Retro-fit energy exchange system for transparent incorporation into a plurality of existing energy transfer systems|
A condenser with subcooling is provided. The condenser comprises apparatus for collecting liquid refrigerant and increasing a velocity of the liquid refrigerant as the liquid refrigerant interfaces with at least one wall of a first pass liquid medium compartment, thereby removing heat from the liquid refrigerant, subcooling the liquid refrigerant and heating a liquid medium..
An air-conditioning apparatus controls an opening degree of at least one of a second expansion device and a third expansion device to adjust the amount of refrigerant to flow through the injection pipe.. .
|Outdoor unit for air-conditioning apparatus, and air-conditioning apparatus|
An outdoor unit for an air-conditioning apparatus includes an outdoor heat exchanger; a compressor; a refrigerant pipe configured to couple the outdoor heat exchanger and the compressor with an indoor unit including an indoor heat exchanger; and a control unit that determines whether the heating capacity of the indoor unit performing a heating operation is decreased by the refrigerant stagnated in the indoor heat exchanger.. .
|Defrosting a heat exchanger in a heat pump by diverting warm refrigerant to an exhaust header|
Heat pumps with improved defrost cycles and methods of defrosting heat exchangers, for example, having microchannel outdoor heat exchangers. A heat exchanger has three types of connection points that are used during a defrost cycle.
|Transport refrigeration system and method for operating|
A refrigeration system having a refrigeration unit (22) for providing temperature conditioned air to a temperature controlled space, an engine (26) and an electric generation device (24) driven by the engine, is provided with a battery system (28) for supplying electric power. A method of operating the transport refrigeration includes, during a high cooling demand mode, operating the engine (26) to drive the electric generation device (24) for supplying electric power and simultaneously employing the battery system (28) for supplying electric power to jointly power the plurality of power demand loads (50, 42, 46, 48) of the refrigerant unit..
A heat exchanger and a method are provided to vaporize a working fluid using a heat sourcing fluid. The heat exchanger includes a first section, a second section, and a third section.
|Multiple organic rankine cycle system and method|
Apparatus, systems and methods are provided for the use of multiple organic rankine cycle (orc) systems that generate mechanical and/or electric power from multiple co-located waste heat flows using a specially configured system of multiple expanders operating at multiple temperatures and/or multiple pressures (“mp”) utilizing a common working fluid. The multiple orc cycle system accepts waste heat energy at different temperatures and utilizes a single closed-loop cycle of organic refrigerant flowing through all expanders in the system, where the distribution of heat energy to each of the expanders allocated to permit utilization of up to all available heat energy, in some embodiments, the multiple orc system maximizes the output of the waste energy recovery process.