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Refrigerant patents

      

This page is updated frequently with new Refrigerant-related patent applications.




 Leak detector sensor systems using tag-sensitized refrigerants patent thumbnailLeak detector sensor systems using tag-sensitized refrigerants
A leak detection system for a refrigerant circuit is provided. The refrigerant circuit is sealed and circulates a working fluid having a refrigerant (e.g., flammable refrigerant) and an oil.
Emerson Climate Technologies, Inc.


 Refrigeration apparatus patent thumbnailRefrigeration apparatus
Refrigeration apparatus r that includes a refrigerant circuit composed of compression section 11, gas cooler 28, electric expansion valve 39, and evaporator 41 includes: electric expansion valve 33; tank 36; split heat exchanger 29; electric expansion valve 43; electric expansion valves 47 and 71; auxiliary circuit 48, main circuit 38, and control apparatus 57, in which control apparatus 57 regulates the gas cooler outlet temperature based on outside air temperature when the outside air temperature is higher than a specified temperature, and regulates the gas cooler outlet temperature based on saturation temperature st of saturated liquid of the refrigerant after the refrigerant flows out of compressor 11 but before flows into electric expansion valve 33, when the outside air temperature is lower than the specified temperature.. .
Panasonic Intellectual Property Management Co., Ltd.


 Cooling system with low temperature load patent thumbnailCooling system with low temperature load
A system includes a temperature sensor, a pressure sensor, and a controller. The temperature sensor measures a temperature of a refrigerant at a compressor.
Heatcraft Refrigeration Products Llc


 Fault detection and diagnosis for refrigerator from compressor sensor patent thumbnailFault detection and diagnosis for refrigerator from compressor sensor
A refrigerator, a sealed refrigerant system, and method are provided where the refrigerator includes at least a refrigerated compartment and a sealed refrigerant system including an evaporator, a compressor, a condenser, a controller, an evaporator fan, and a condenser fan. The method includes monitoring a frequency of the compressor, and identifying a fault condition in the at least one component of the refrigerant sealed system in response to the compressor frequency.
Whirlpool Corporation


 Surged heat pump systems and methods of defrosting an evaporator patent thumbnailSurged heat pump systems and methods of defrosting an evaporator
Surged heat pump systems, devices, and methods are disclosed having refrigerant phase separators that generate at least one surge of vapor phase refrigerant into the inlet of an evaporator during an on cycle of the compressor. This surge of vapor phase refrigerant, having a higher temperature than the liquid phase refrigerant, increases the temperature of the evaporator inlet, thus reducing frost build up in relation to conventional refrigeration systems lacking a surged input of vapor phase refrigerant to the evaporator.

 Refrigerant piping device patent thumbnailRefrigerant piping device
A refrigerant piping device includes a refrigerating head, an input unit connected to the refrigerating head to input refrigerant, and an output unit connected to the refrigerating head to output refrigerant. The output unit includes a refrigerant return pipe connected to the refrigerating head, and a heating module configured on the refrigerant return pipe to heat up the refrigerant inside the refrigerant return pipe.

 Refrigeration cycle device patent thumbnailRefrigeration cycle device
A refrigeration cycle apparatus includes a refrigeration cycle in which a compressor, a heat source-side heat exchanger, an expansion device, and a load-side heat exchanger are connected by refrigerant pipes to circulate refrigerant. The refrigerant is a single-component refrigerant composed of 1,1,2-trifluoroethylene or a refrigerant mixture containing 1,1,2-trifluoroethylene.
Asahi Glass Company, Limited


 Air conditioner and cooling receiver of air conditioner patent thumbnailAir conditioner and cooling receiver of air conditioner
An air conditioner in which a supercooler and a receiver are integrated and the cooling receiver of the air conditioner. The cooling receiver of an air conditioner includes a cooling unit configured to include at least one first refrigerant flow channel through which a refrigerant flows and a second refrigerant flow channel which surrounds the outer circumference of part of the at least one first refrigerant flow channel and through which a refrigerant flows and supercools a refrigerant flowing through the first refrigerant flow channel and a receiver unit configured to have at least one end of the cooling unit disposed in the receiver unit and to store the supercooled refrigerant exiting from the first refrigerant flow channel..
Lg Electronics Inc.


 Method to enhance the performance of cooling devices utilizing modified barium titanate (bt) electrocaloric ceramic materials patent thumbnailMethod to enhance the performance of cooling devices utilizing modified barium titanate (bt) electrocaloric ceramic materials
A method to enhance the performances of cooling devices based on barium titanate (bt) ceramics is disclosed. Such cooling is realized by utilizing at least one bt-based ceramics which exhibit large electrocaloric effect (ece).
Nascent Devices Llc


 Air conditioner patent thumbnailAir conditioner
An air conditioner operable even in a low-load cooling or heating mode is provided. The air conditioner may include a compressor that compresses a refrigerant, a main outdoor heat exchanger that condenses the refrigerant in a cooling mode and that evaporates the refrigerant in a heating mode, an indoor heat exchanger that evaporates the refrigerant in the cooling mode while condensing the refrigerant in the heating mode, a switch that guides the refrigerant discharged from the compressor to the main outdoor heat exchanger in the cooling mode and that guides the refrigerant discharged from the compressor to the indoor heat exchanger in the heating mode, and a sub outdoor heat exchanger that evaporates a portion of the refrigerant condensed in the main outdoor heat exchanger in a low-load cooling mode and that condenses a portion of the refrigerant discharged from the compressor in a low-load heating mode..
Lg Electronics Inc.


Refrigeration apparatus

Refrigeration apparatus r that includes a refrigerant circuit composed of compressor 11, gas cooler 28, electric expansion valve 39, and evaporator 41 includes: electric expansion valve 33; tank 36; split heat exchanger 29; electric expansion valve 43; electric expansion valve 47; auxiliary circuit 48; main circuit 38; low-pressure sensor 51; and control apparatus 57, in which control apparatus 57 regulates the pressure of the refrigerant after the refrigerant flows out of tank 36 but before flows into electric expansion valve 39 to be a first constant pressure when the pressure detected by low-pressure sensor 51 is smaller than a specified pressure, and regulates the pressure of the refrigerant to be a second constant pressure smaller than the first constant pressure when the pressure detected by low-pressure sensor 51 is larger than the specified pressure.. .
Panasonic Intellectual Property Management Co., Ltd.

Cooling system with low temperature load

A system includes a flash tank, a load, a first compressor, a second compressor, and a liquid injection line. The flash tank stores a refrigerant.
Heatcraft Refrigeration Products Llc

Multi-evaporation cooling system

A multiple-evaporation cooling system in which the intermediate heat exchanger of first evaporation line includes at least a segment of the physically arranged expansion device in contact with at least a portion of the second row of evaporation and the intermediate heat exchanger's second evaporative line includes at least one expansion device segment physically disposed in contact with at least one portion of a first evaporation line. Considering the temperature of the intermediate heat exchanger of first evaporation line influences the temperature of the refrigerant flowing in the second line of evaporative expansion device and the temperature of the intermediate heat exchanger of the second evaporative line influences the temperature of the refrigerant flowing in the first line of evaporative expansion device.
Whirlpool S.a.

Cooling dryer for compressed air and corresponding method

Dryer for compressed air including at least one cooling unit (28), able to cool a refrigerant fluid circulating in at least one drying unit (22), provided with an air inlet (11) and an air outlet (13) and also comprising at least one circuit (18) inside which air to be treated circulates from said air inlet (11) to said air outlet (13). The dryer for compressed air comprises, along the circuit (18), at least one cooling apparatus (12), configured to cool the compressed air to positive temperatures, a few degrees above zero and near to freezing temperature, and at least one freezing apparatus (14), disposed downstream of the cooling apparatus (12) and configured to cool the compressed air to abundantly negative values..
Officine Meccaniche Industriali S.r.l. Con Unico Socio

Cooling apparatus, light source apparatus including cooling apparatus, and projection-type image display apparatus including light source apparatus

A cooling apparatus includes: a refrigerant circuit in which a compressor, a condenser, an expansion valve and an evaporator are circularly connected sequentially, via a pipe, and a refrigerant circulates; and a heater provided to the refrigerant circuit, in which the evaporator is thermally connected to an exothermic element.. .
Mitsubishi Electric Corporation

Control centrifugal compressor

This disclosure relates to a control system and method for the centrifugal compressor. The system, for example, includes a controller configured command an adjustment of at least one of (1) a flow regulator and (2) a speed of a shaft in order to provide safe, efficient compressor operation.
Danfoss A/s

Rotary compressor

On a plane orthogonal to the rotation shaft, an upper muffler chamber has a plurality of flared portions that are flared from a center of a rotation shaft toward between penetrating bolts and a plurality of small-diameter portions that connect between the flared portions, are apart from penetrating bolts, and are formed on a center side of the rotation shaft from the penetrating bolts. A muffler outlet is provided in each flared portion.
Fujitsu General Limited

Refrigerator oil, and working fluid composition for refrigerators

Wherein r1, r2, and r3 may be the same or different from each other and each represent a hydrogen atom or a hydrocarbon group, r4 represents a divalent hydrocarbon group or an ethereal oxygen-containing divalent hydrocarbon group, r5 represents a hydrocarbon group, m represents an integer of 0 or more, and in the case where m is 2 or more, a plurality of r4 may be the same or different from each other, a number average molecular weight mn is 500 or more and 2000 or less, a ratio of a weight average molecular weight mw to a number average molecular weight mn, mw/mn, is 1.10 or more and 1.25 or less, and the refrigerating machine oil is used with a mildly flammable hydrofluorocarbon refrigerant.. .

Compositions comprising fluoroolefins and uses thereof

The present invention relates to fluoroolefin compositions. The fluoroolefin compositions of the present invention are useful as refrigerants or heat transfer fluids and in processes for producing cooling or heat.
The Chemours Company Fc, Llc

Thermal tooth testing devices, methods and kits

The disclosed devices relate to disposable self-loading absorbent-tipped thermal tooth testing instruments. The instrument utilizes the expansion of dental refrigerant to saturate a cotton-tipped applicator which is permanently attached to one end of the tester into which the opposite end conveniently fits into a spray nozzle of any currently commercially available dental refrigerant can..

Fuel cell system and fuel cell vehicle

The fuel cell system is provided with a radiator, a first flow passage in which refrigerant flows from a fuel cell stack towards a radiator, a second flow passage in which refrigerant flows from the radiator towards a fuel cell stack, a bypass flow passage that connects the radiator with a position in the second flow passage at which refrigerant flows into the fuel cell stack, and a control part. In the bypass flow passage, an on-off valve and a reserve tank are provided from the upstream side.
Toyota Jidosha Kabushiki Kaisha

Air conditioner

Solution: the air conditioner having an expansion valve for decompressing a refrigerant, and a heat exchanger for heat exchange between the refrigerant and air. The air conditioner includes a first linearly shaped piping that is connected to the expansion valve and vertically disposed, a branch pipe connected to the first piping for branching a refrigerant flow path into a plurality of sections, a plurality of second pipings connected to the branch pipe, and a plurality of distributors connected to the second piping for further branching the refrigerant flow path to the heat exchanger..

Micro channel type heat exchanger

A micro channel type heat exchanger, including a first pass which is disposed in some of flat tubes disposed in a first heat exchange module and along which a refrigerant flows in one direction, a second pass which is disposed in remaining some of the flat tubes disposed in the first heat exchange module and along which the refrigerant supplied from the first pass flows in an opposite direction to the direction of the first pass, a third pass which is distributed and disposed in the remainder of the flat tubes disposed in a first heat exchange module other than the first pass and the second pass and in some of flat tubes disposed in a second heat exchange module, and a fourth pass which is disposed in the remainder of the flat tubes disposed in the second heat exchange module and along which a refrigerant supplied from the third pass flows in an opposite direction to a direction of the third pass.. .
Lg Electronics Inc.

Mixed refrigerant distributed chilling scheme

Processes and systems are provided for recovering a liquid natural gas (“lng”) from a hydrocarbon-containing gas. More particularly, the present invention is generally related to processes and systems that optimize the chilling efficiencies of an lng facility through the utilization of an auxiliary refrigeration cycle.
Black & Veatch Holding Company

Mechanical refrigerator

A mechanical refrigerator including a main body forming a storage space; a inverter compressor compressing a refrigerant; a microprocessor controlling drive of the compressor; a thermostat, which is connected to a power supply and switched on or switched off according to changes in a temperature of the storage space; a power detection circuit, which is connected to the power supply and the thermostat electrically, and configured to switch on or off the microprocessor according to a status of the thermostat; and a power circuit connected to the power supply and the microprocessor and configured to supply power for driving the compressor to the microprocessor.. .
Lg Electronics Inc.

Ice making machine and ice cube evaporator

An evaporator includes a refrigerant conduit sandwiched between front a rear plates. The front and rear plates have inner flat portions, each inner flat portion of the front plate faces, but is spaced from, a respective inner flat portion of the rear plate to define a respective spaced portion.
Hoshizaki America, Inc.

Method and device for heat recovery on a vapour refrigeration system

A method and a device for heat recovery on a vapour compression refrigeration system allowing the produce hot water, includes at least a first piping closed refrigerating circuit in which a refrigerant fluid circulates, a compressor, an evaporator, an expansion valve, a condenser and/or a heat recovery unit including a water inlet and a water outlet respectively connected to a second piping circuit including a circulating pump. At least one physical unit of the refrigerant fluid and/or water of the second piping circuit is determined.
Ecolactis

Refrigerant charge management in an integrated heat pump

A heat pump including an integrated system for the management of refrigerant charge is provided. The heat pump includes an indoor line and an outdoor line that are connected to a compressor through a reversing valve.
Ut-battelle, Llc

Accumulator and refrigeration cycle apparatus

Provided is an accumulator to be connected on a suction side of a compressor by piping in a refrigeration cycle apparatus configured to form a refrigerant circuit by using, as refrigerant, refrigerant containing a substance having such a property as to cause a disproportionation reaction, the accumulator being configured to accumulate refrigerant in a liquid state and including: a shell allowing the refrigerant in the liquid state to accumulate therein; an inflow pipe allowing the refrigerant flowing through the refrigerant circuit to flow into a container; and an outflow pipe allowing the refrigerant to flow out of the shell, in which an outlet shape of the inflow pipe or an outlet of the inflow pipe is formed so that a flow speed of the refrigerant in a direction normal to an inner wall surface of the shell at time of collision of the refrigerant, which flows into the shell through the inflow pipe, against the inner wall surface of the shell is lower than a flow speed of the refrigerant inside the inflow pipe.. .
Asahi Glass Company, Limited

Expansion device and refrigeration cycle apparatus

Provided is an expansion device configured to form a refrigerant circuit using refrigerant containing a substance having such a property as to cause a disproportionation reaction, the expansion device including: a valve body having a cylindrical shape; and an expansion unit including a valve seat, the expansion unit being configured to vary an opening area by insertion of the valve body into the valve seat through movement of the valve body in an axial direction thereof, in which: a distal end portion of the valve body to be inserted into the expansion unit is formed to have an angle larger than 0 from a direction perpendicular to the axial direction of the valve body.. .
Asahi Glass Company, Limited

System and a air conditioning and heat exchanger arrangement

The present invention relates to an air-conditioning system, and a heat exchanger arrangement for fitting to an air-conditioning system, the heat exchanger arrangement using water condensed on the evaporator as a coolant to cool the refrigerant after it has been compressed by the compressor, and before it is directed to the condenser.. .
Hvps Holdings (pty) Limited

Cryogenic refrigerator

A cryogenic refrigerator includes a scotch yoke mechanism including a scotch yoke and a bearing movably engaged with the scotch yoke, and a displacer caused to reciprocate in a cylinder by the scotch yoke mechanism, so that a refrigerant gas inside an expansion space formed in the cylinder is expanded by the reciprocation of the displacer to generate cold temperatures. The scotch yoke includes a concave part at a position corresponding to a top dead center of the displacer..
Sumitomo Heavy Industries, Ltd.

Azeotrope-like compositions of cis-1,1,1,4,4,4-hexafluoro-2-butene

And another material selected from the group consisting of water, fluoroketones, alcohols, hydrochlorofluoroolefins, and combinations of two or more thereof. These compositions may be used in a wide variety of applications such as, blowing agents, refrigerants, heating agents, power cycle agents, cleaning agents, aerosol propellants, sterilization agents, lubricants, flavor and fragrance extractants, flammability reducing agents, and flame suppression agents..

Vehicle hvac system with auxiliary coolant loop for heating and cooling vehicle interior

A vehicle includes a heating, ventilation and air conditioning (hvac) system for heating and cooling a passenger compartment. The hvac system includes a refrigerant loop operable in a cooling mode and a heating mode, and an auxiliary coolant loop for heating and cooling at least a portion of the passenger compartment.
Ford Global Technologies, Llc

Vehicle hvac system with auxiliary coolant loop for heating and cooling vehicle interior

A vehicle includes a heating, ventilation and air conditioning (hvac) system for heating and cooling a passenger compartment. The hvac system includes a refrigerant loop and a coolant loop, and an auxiliary coolant loop for heating and cooling at least a portion of the passenger compartment.
Ford Global Technologies, Llc

Azeotrope-like compositions of 1,1,1,2-tetrafluoropropene and 1,1,1,2-tetrafluoroethane

Provided are azeotrope-like compositions consisting essentially of 1,1,1,2-tetrafluoropropene and 1,1,1,2-tetrafluoroethane and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.. .
Honeywell International Inc.

Balloon system

The present disclosure relates to a balloon system that includes a flexible volume balloon hull configured to contain a lifting gas, a flexible volume ballonet contained within said balloon hull configured to contain a refrigerant gas and a refrigerant gas transfer device in fluid communication with the ballonet to control the balloon's vertical ascent and descent.. .
Southwest Research Institute

Systems and methods for operating a refrigeration system

Methods and systems for operating a refrigeration system for refrigerating a product are provided. A first temperature of the refrigerant downstream of a condenser and upstream of an evaporator may be obtained.
Paul Mueller Company

Stir-cycle motor

A system includes a condensing unit, a valve, and a unit cooler. The condensing unit is configured to condense refrigerant.
Heatcraft Refrigeration Products Llc

Refrigerated dryer power saving controls

According to one aspect of the present disclosure, a control system and method of controlling a refrigerated dryer of a gas compressor system are disclosed. The control system, including a controller and a flow sensor, selectively operates in a power saving mode in which the controller shuts down a refrigerant compressor included in the dryer system when the flow sensor indicates that no compressed gas is flowing through the dryer.
Ingersoll-rand Company

System and method to optimize effectiveness of liquid line accumulator

A system and method are disclosed that provide an accumulator for helping to relieve pressure during pressure spikes in an hvac system. The accumulator can also be heated by various means, such as components of the condenser or evaporator, helping to achieve proper performance of the system.
Lennox Industries Inc.

Liquid chiller system

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, an eccentric condenser and an eccentric evaporator. The eccentric compressor has a lower integrated reservoir and the eccentric evaporator has an upper dedicated reservoir such that separate, dedicated separator or receiver vessels are not required.

Outdoor unit for air conditioner

An outdoor unit for an air conditioner is provided. The outdoor unit includes a base disposed on lower portions of suction panels, the base having two long sides and two short sides, legs respectively disposed on lower portions of the two long sides of the base, a compressor and an outdoor heat exchanger disposed on an upper portion of the base, a refrigerant tube connecting the compressor and the outdoor heat exchanger to each other, a plurality of service valve assemblies connected to the refrigerant tube, and a plurality of connection tubes respectively connected to the plurality of service valve assemblies to extend downward from the base.
Lg Electronics Inc.

Heat pump apparatus

A heat pump apparatus includes a refrigerant circuit for circulating combustible refrigerant, and a load unit to be provided in a room and configured to accommodate a load side heat exchanger. The load side heat exchanger allows heat exchange between the combustible refrigerant and a liquid heat medium.
Mitsubishi Electric Corporation

Lubrication system of electric compressor

A lubrication system of an electric compressor may include a lower housing having a refrigerant inlet port formed to pierce an outer side plane thereof, a rotational shaft supported rotatably by the lower housing and a frame, a rotor for rotating the rotational shaft, an orbiting scroll disposed on a top portion of the frame to be orbited by the rotational shaft, a fixed scroll disposed on a top portion of the orbiting scroll to allow the orbiting scroll to orbit therein, and an upper housing disposed on a top portion of the fixed scroll and having a refrigerant outlet formed in an outer side plane thereof.. .
Hyundai Mobis Co., Ltd.

Compressor system having rotor with distributed coolant conduits and method

A compressor includes a rotor having an outer compression surface and a plurality of inner heat exchange surfaces. A coolant supply manifold fluidly connects with a coolant inlet in a first axial end of the rotor, and delivers coolant fluid by way of conduits having an axial distribution in the rotor so as to deliver coolant fluid to the heat exchange surfaces.
Ingersoll-rand Company

Cooling systems for high mach applications

A cooling system for an aircraft includes an air intake, a heat exchanger configured to receive air passing into the air intake when the aircraft is operating at mach speed, and configured to receive compressed refrigerant from a first compressor at a first pressure, an evaporator positioned within the aircraft and configured to receive heated air from a compartment within the aircraft, at least one of an expansion device and an expansion machine, and the compressed refrigerant rejects heat in the heat exchanger to the air, expands in the at least one of the expansion device and the expansion machine, and receives heat in the evaporator from the heated air.. .
Rolls-royce Corporation

Composition for heat cycle system and heat cycle system

A composition for a heat cycle system comprising a working fluid for heat cycle containing 1,2-difluoroethylene, and a refrigerant oil such as an oxygen-containing synthetic oil (such as an ester refrigerant oil or an ether refrigerant oil) or a hydrocarbon refrigerant oil, and a heat cycle system employing the composition for a heat cycle system.. .

Integrated air and vapor cycle cooling system

A cooling system in which an acs (air cycle system) turbine may be driven by high pressure air from a turbo-fan engine and a vcs (vapor cycle system) having an evaporator and a vcs refrigerant compressor may be driven by the acs turbine. Fluid of the chilled fluid reservoir, which may be chilled fuel, may be circulated through and cooled in the evaporator.
Honeywell International Inc.

Solar-thermal powered recreational vehicle

A solar-thermal powered recreational vehicle featuring a solar-thermal air conditioning system integrated with a solar clean energy system to provide a recreational vehicle having improved energy efficiency. In an embodiment employing the principles of the present invention, the solar-thermal powered recreational vehicle can comprise a clean energy system for providing electrical power to the recreational vehicle, whereby the clean energy system features one or more solar photovoltaic panels, a batter bank, and a generator operatively coupled to a hybrid inverter.
Hollywood Trucks, Llc

Outdoor heat exchanger

The present invention relates to an outdoor heat exchanger, and more particularly, to a down flow type outdoor heat exchanger having channels of at least three paths in a heat pump system for vehicles, in which a flux distribution means protruded in a height direction is further formed in a lower tank in which the channel is changed from an upward direction to a downward direction or from a downward direction to an upward direction to block some area of a lower portion thereof so as to prevent a refrigerant from being non-uniformly distributed while a flux is concentrated toward a rear side of the channel due to a fluid inertia in an area in which the flow path is changed, thereby delaying frosting upon heating.. .
Hanon Systems



Refrigerant topics:
  • Refrigerant
  • Heat Exchanger
  • Evaporator
  • Control Unit
  • Air Conditioning
  • Phase Change Material
  • Condensation
  • Phase Change Materials
  • Contraction
  • Automotive
  • Bladeless Turbine
  • Air Conditioner
  • Calculator
  • Magnetic Refrigeration
  • Global Warming


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    This listing is a sample listing of patent applications related to Refrigerant for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Refrigerant with additional patents listed. Browse our RSS directory or Search for other possible listings.


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