Method for conversion of low temperature heat to electricity and cooling, and system therefore

A method for producing electrical energy is disclosed which uses a heat source, such as solar heat, geothermal heat, industrial waste heat or heat from power production processes, providing heat of 150° C. or below, further comprising an absorber system in which a working gas, primarily carbon dioxide CO2, is absorbed into an absorbent, typically an amine, further comprising a reactor which receives heat from said heat source and in which the absorbent-CO2 mixture is split into CO2 and absorbent, further comprising an expansion machine, an electricity generator and auxiliary equipment such as pumps, pipes and heat exchangers. The system according to the method allows the cost-efficient production of electrical energy and cooling using low value heat source.

Method for conversion of low temperature heat to electricity and cooling, and system therefore

A method for producing electrical energy is disclosed which uses a heat source, such as solar heat, geothermal heat, industrial waste heat or heat from power production processes, providing heat of 150 °C or below, further comprising an absorber system in which a working gas, primarily carbon dioxide CO ...

METHOD FOR CONVERSION OF LOW TEMPERATURE HEAT TO ELECTRICITY AND COOLING, AND SYSTEM THEREFORE

Regasification of lng aboard a transport vessel

Regasification of liquefied natural gas (LNG) aboard a transport vessel

A system and a method for regasifing LNG aboard a carrier vessel before the re-vaporized natural gas is transferred to shore. The pressure of the LNG is boosted substantially while the LNG is in its liquid phase and before it is flowed through a vaporizer(s) which, in turn, is positioned aboard the vessel. Seawater taken from the body of water surrounding said vessel is flowed through the vaporizer to heat and vaporize the LNG back into natural gas before the natural gas is off-loaded to onshore facilities.

método para produzir energia elétrica usando um sistema de circuito essencialmente fechado, e, sistema

Processo e sistema para regaseificar gás natural liquefeito (gnl) a bordo de um navio transporte de gnl

METHOD FOR CONVERSION OF LOW TEMPERATURE HEAT TO ELECTRICITY AND COOLING, AND SYSTEM THEREFORE

A method for producing electrical energy is disclosed which uses a heat source, such as solar heat, geothermal heat, industrial waste heat or heat from power production processes, providing heat of 150 ° C. or below, further comprising an absorber system in which a working gas, primarily carbon dioxide CO 2 , is absorbed into an absorbent, typically an amine, further comprising a reactor which receives heat from said heat source and in which the absorbent-CO 2 mixture is split into CO 2 and absorbent, further comprising an expansion machine, an electricity generator and auxiliary equipment such as pumps, pipes and heat exchangers. The system according to the method allows the cost-efficient production of electrical energy and cooling using low value heat source.

METHOD FOR CONVERSION OF LOW TEMPERATURE HEAT TO ELECTRICITY AND COOLING, AND SYSTEM THEREFORE

A method for producing electrical energy is disclosed which uses a heat source, such as solar heat, geothermal heat, industrial waste heat or heat from power production processes, providing heat of 150° C. or below, further comprising an absorber system in which a working gas, primarily carbon dioxide CO2, is absorbed into an absorbent, typically an amine, further comprising a reactor which receives heat from said heat source and in which the absorbent-CO2 mixture is split into CO2 and absorbent, further comprising an expansion machine, an electricity generator and auxiliary equipment such as pumps, pipes and heat exchangers. The system according to the method allows the cost-efficient production of electrical energy and cooling using low value heat source. 1. A method for producing energy using an essentially closed loop system comprising:{'b': 1', '7, 'using thermal energy from a heat source () to heat a pressurized gas-absorbent mix in a reactor ();'}causing the gas-absorbent mix to split into heated and pressurized C02 gas and a heated absorbent liquid that are output from the reactor;{'b': '15', 'transforming the heated and pressurized CO2 gas into low temperature CO2 gas in a transition machine ();'}{'b': '3', 'piping the heated absorbent liquid exiting the reactor and the low temperature C02 gas exiting the transition machine to an absorber system (); and'}causing the C02 gas to be chemically re-absorbed into the heated absorbent liquid by the absorber system creating the gas-absorbent mix for the process to start over in a reversible reaction between the C02 gas and the heated absorbent liquid.215. The method according to wherein the transforming step is carried out using an expansion machine () as the transition machine.3. The method according to claim 2 , further comprising the step of:{'b': 19', '7', '15, 'providing a booster system () for heating the heated and pressurized gas by said heat source or a secondary heat source, operating at least at the same ...

Thermodynamic regenerator

Various embodiments are directed to a regenerator for use with a regenerative engine. The regenerator may comprise a plurality of regenerator disks. Each of the plurality of regenerator disks may comprises a plurality of concentric ribs defining a plurality of concentric gaps therebetween. Further, the plurality regenerator disks may be arranged within the regenerator longitudinally, such that the plurality of concentric gaps defined by adjacent regenerator disks are substantially aligned.

Regenerator, gm type refrigerator and pulse tube refrigerator

A helium-cooling type regenerator includes first and second storage spaces. The first storage space is disposed in a region on a high-temperature side, and accommodates the regenerator material whose pressure is P 1. The second storage space is disposed in a region on a low-temperature side, and accommodates the regenerator material whose pressure is P 2, which is less than P 1. A specific heat in the case where a pressure of the regenerator material accommodated in the first storage space is P 2 is less than that in the case where the pressure of the regenerator material is P 1, and a specific heat in the case where a pressure of the regenerator material accommodated in the second storage space is P 1 is less than that in the case where the pressure of the regenerator material is P 2.

Regenerator, gm refrigerator, and pulse tube refrigerator

A helium-cooling type regenerator configured to retain cold temperatures of working gas includes a first section through which the working gas flows, a second section configured to accommodate helium gas as a regenerator material, and a regenerator material pipe connected to the second section and to a helium source.

Cryogenic refrigerator

A cryogenic refrigerator includes a cylinder configured to be fed with a refrigerant gas, a displacer configured to reciprocate in the cylinder, a drive unit configured to cause the displacer to reciprocate in the cylinder, and a connecting mechanism connecting the drive unit and the displacer. The connecting mechanism includes an output shaft extending from the drive unit toward the displacer, an engagement pin provided through the output shaft to extend in directions to cross the reciprocating directions of the displacer, a rotation prevention mechanism configured to engage with the engagement pin to prevent a further rotation of the displacer when the displacer rotates, and a lid body fixed to an end portion of the displacer and engaging with the output shaft.

Cryogenic refrigerator, cryopump and displacer

A two-stage GM cryogenic refrigerator includes a displacer having a low-temperature side and a high-temperature side and a motor configured to drive the displacer. The motor is configured to be rotatable forward in cooling and backward in increasing a temperature. The cryogenic refrigerator further includes a resin provided on an outer circumferential surface of the displacer. A thickness of the resin is thinner on the high-temperature side than on the low-temperature side.

Cryogenic refrigerator

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. The drive unit performs driving so that the magnitude of a speed when the drive rod moves from a top dead center to a bottom dead center is different from the magnitude of a speed when the drive rod moves from the bottom dead center to the top dead center, at the same displacement position.

Helium Management Control System

A helium management control system for controlling the helium refrigerant supply from a common manifold supplies cryogenic refrigerators with an appropriate helium supply. The system employs sensors to monitor and regulate the overall refrigerant supply to deliver an appropriate refrigerant supply to each of the cryogenic refrigerators depending on the computed aggregate cooling demand of all of the cryogenic refrigerators. An appropriate supply of helium is distributed to each cryopump by sensing excess and sparse helium and redistributing refrigerant accordingly. If the total refrigeration supply exceeds the demand, or consumption, excess refrigerant is directed to cryogenic refrigerators which can utilize the excess helium to complete a current cooling function more quickly. If the total refrigeration demand exceeds the total refrigeration supply, the refrigerant supply to some or all of the cryogenic refrigerators will be reduced accordingly so that detrimental or slowing effects are minimized based upon the current cooling function. 1. A cryopump , comprising:a cryopanel;a cryogenic refrigerator which is configured to cool the cryopanel, the cryogenic refrigerator including a drive motor configured to drive the cryogenic refrigerator; anda controller to control the cryogenic refrigerator during a cooling operation bringing the temperature of the cryogenic refrigerator down to operating temperature by varying the speed of the drive motor.2. The cryopump as in wherein the controller operates using at least three modes of control: normal claim 1 , over pressure claim 1 , and under pressure.3. The cryopump as in wherein if pressure is greater than an over pressure mode set point claim 2 , the controller is configured to respond via the cooling operation by operating in over pressure mode claim 2 , and increasing the drive motor speed.4. The cryopump as in wherein the over pressure mode set point is 205 psi.5. The cryopump as in wherein the controller is configured ...

CRYOCOOLER

A cryocooler includes a displacer, a cylinder that forms an expansion space, a Scotch yoke mechanism configured to drive the displacer in a reciprocating manner, a first rod that extends from the Scotch yoke mechanism, a housing that includes an assist chamber, a rotary valve configured to switch between a state in which the expansion space and a discharge side of a compressor are connected and the assist chamber and a suction side of the compressor are connected and a state in which the expansion space and the suction side of the compressor are connected and the assist chamber and the discharge side of the compressor are connected, a motor configured to drive the Scotch yoke mechanism and the rotary valve, and an on-off valve configured to open and close a gas flow path through which the rotary valve and the assist chamber are connected. 1. A cryocooler comprising:a displacer;a cylinder that accommodates the displacer and is configured such that as the displacer reciprocates, an expansion space between the displacer and the cylinder is formed;a reciprocating drive mechanism configured to drive the displacer in a reciprocating manner;an assist rod that extends toward a side opposite to the displacer from the reciprocating drive mechanism;a housing that includes a drive mechanism accommodation chamber accommodating the reciprocating drive mechanism and an assist chamber accommodating a distal end of the assist rod;a switch valve configured to switch between a first state in which the expansion space and a discharge side of a compressor are connected and the assist chamber and a suction side of the compressor are connected, and a second state in which the expansion space and the suction side of the compressor are connected and the assist chamber and the discharge side of the compressor are connected;a reversible motor configured to drive the switch valve; andan on-off valve configured to open and close a gas flow path through which the switch valve and the assist ...

STIRLING CRYOCOOLER

In a Stirling cryocooler, a displacer includes an internal space which is filled with gas. The displacer is reciprocatably accommodated in the expander main body. The displacer accommodates in the internal space one or more convection control plates, for controlling gas convection to a minimum. The one or more convection control plates are disposed along a line intersecting the displacer's longitudinal axis. At least one of the convection control plates divides the internal space into first and second sub-chambers, and includes an opening through which the sub-chambers communicate. The at least one of the convection control plates includes a convection control wall provided in the opening. 1. A Stirling cryocooler comprising:a displacer having a longitudinally extending gas-filled internal space;an expander main body reciprocatably accommodating the displacer; andat least one convection control plate for controlling gas convection to a minimum, accommodated in the displacer internal space, disposed along a line intersecting the displacer's longitudinal axis; whereinthe at least one convection control plate divides the displacer internal space into first and second sub-chambers, includes an opening through which the first sub-chamber communicates with the second sub-chamber, and includes a convection control wall provided on the opening.2. The Stirling cryocooler according to claim 1 , further comprising:a regenerator contained in the expander main body such as to be located outer peripherally along the displacer, in a predetermined cylindrical region having the longitudinal axis of the displacer as its center axis, wherein the at least one convection control plate is provided such as to be positioned, even when the displacer reciprocates, in a location corresponding to the predetermined cylindrical region in which the regenerator is positioned.3. The Stirling cryocooler according to claim 1 , wherein the displacer accommodates a plurality of the convection control ...

CRYOGENIC STIRLING REFRIGERATOR WITH MECHANICALLY DRIVEN EXPANDER

Integral linear cryogenic Stirling refrigerator comprised of the free piston positive displacement pressure wave generator, the moving assembly of which is connected to the free piston displacer by the dynamic “spring-mass-spring” mechanical phase shifter the mechanical properties of which (spring rates and weight) are selected to provide a predetermined phase lag of motion of the displacer piston relative to the moving assembly of pressure wave generator. 1. A cryogenic refrigerator device comprising:a housing that is configured to enclose a gaseous working agent;a positive displacement compressor, having a moving component configured to be driven back and forth within the housing along a longitudinal axis of the device by a linear electromagnetic actuator;a displacer that includes a regenerative heat exchanger and that is configured to slide back and forth along the longitudinal axis within a cold finger that is connected to a distal end of the housing, wherein a proximal end of the displacer is connected to a displacer plunger that includes a bore that enables flow of the working agent between the regenerative heat exchanger and a warm chamber that is proximal to the displacer plunger;an auxiliary mass configured to slide back and forth along the longitudinal axis within the housing and between the moving component of the compressor and the displacer plungerthe auxiliary mass connected to the moving component of the compressor by a drive spring and to the displacer plunger by a displacer spring such that motion of the moving component of the compressor is transmitted to the displacer, wherein the auxiliary mass includes a bore to enable the working agent to flow between a compression chamber located between the moving component of the compressor and the auxiliary mass and the warm chamber, and a mass of the auxiliary mass and spring rates of the drive spring and the plunger spring are selected to introduce a predetermined phase shift of motion of the displacer ...

System, apparatus and method for pulse tube cryocooler

A pulse tube cryocooler (PTC) includes an etched glass substrate bonded to a glass plate and defining one or multiple stages or layers. The PTC includes a plurality of channels etched into a surface of the substrate to define a heat exchanger, a pulse tube, a cold heat exchanger or cold head, a regenerator and an aftercooler. The bonded substrate and plate encloses the plurality of channels to form capillaries operable for conducting and distributing fluid. The pulse tube is disposed between the cold head and the heat exchanger and the regenerator is disposed between the cold head and the aftercooler. The heat exchanger is connected to a valve or inertance tube which, in turn, is connectable to a buffer tank or reservoir that contains fluid. The aftercooler is connectable to an external compressor operable for oscillating movement, which increases and decreases pressure and temperature within the PTC.

GAS TURBINE ENGINE WITH TRANSCRITICAL VAPOR CYCLE COOLING

A gas turbine engine has a compressor section, a combustor, and a turbine section. An associated fluid is to be cooled and an associated fluid is to be heated. A transcritical vapor cycle heats the fluid to be heated, and cools the fluid to be cooled. The transcritical vapor cycle includes a gas cooler in which the fluid to be heated is heated by a refrigerant in the transcritical vapor cycle. An evaporator heat exchanger at which the fluid to be cooled is cooled by the refrigerant in the transcritical vapor cycle. A compressor upstream of the gas cooler compresses the refrigerant to a pressure above a critical point for the refrigerant. An expansion device expands the refrigerant downstream of the gas cooler, with the evaporator heat exchanger being downstream of the expansion device, and such that the refrigerant passing through the gas cooler to heat the fluid to be heated is generally above the critical point. 1. A gas turbine engine comprising:a compressor section, a combustor, and a turbine section;a fuel supply system for supplying fuel to said combustor, and including a fuel heating heat exchanger, with a bypass line downstream of said fuel heating heat exchanger for bypassing fuel back to a fuel tank; andfuel in said bypass line being a fluid to be cooled, an associated fluid to be heated, and a transcritical vapor cycle for heating said fluid to be heated, and for cooling said fluid to be cooled, said transcritical vapor cycle including a gas cooler, in which said fluid to be heated is heated by a refrigerant in said transcritical vapor cycle and an evaporator heat exchanger at which said fluid to be cooled is cooled by the refrigerant in said transcritical vapor cycle, a compressor upstream of said gas cooler for compressing the refrigerant to a pressure above a critical point for the refrigerant, and an expansion device for expanding the refrigerant downstream of said gas cooler, with said evaporator heat exchanger being downstream of said expansion ...

CRYOCOOLER AND MAGNETIC SHIELD

A cryocooler includes a second-stage cooling stage, a second cylinder which includes the second-stage cooling stage on a terminal of the second-stage cylinder, a second-stage displacer which includes a magnetic regenerator material and is accommodated in the second-stage cylinder so as to be able to reciprocate in the second-stage cylinder, and a tubular magnetic shield which is installed on the second-stage cooling stage and extends along the second-stage cylinder outside the second-stage cylinder. The magnetic shield is formed of a normal conductor and a product of an electrical conductivity in a temperature range of 10 K (Kelvin) or less and a thickness of the tubular magnetic shield is 60 MS (Mega-Siemens) to 1980 MS. 1. A cryocooler comprising:a cooling stage;a cylinder which includes the cooling stage on a terminal of the cylinder;a displacer which includes a magnetic regenerator material and is accommodated in the cylinder so as to be able to reciprocate in the cylinder; anda tubular magnetic shield which is installed on the cooling stage and extends along the cylinder outside of the cylinder,wherein the tubular magnetic shield is formed of a normal conductor and a product of an electrical conductivity in a temperature range of 10 K (Kelvin) or less and a thickness of the tubular magnetic shield is 60 MS (Mega-Siemens) to 1980 MS.2. The cryocooler according to claim 1 ,wherein in the tubular magnetic shield, the product of the electrical conductivity in the temperature range of 10 K or less and the thickness of the tubular magnetic shield is 89 MS or more.3. The cryocooler according to claim 1 ,wherein in the tubular magnetic shield, the product of the electrical conductivity in the temperature range of 10 K or less and the thickness of the tubular magnetic shield is 1000 MS or less.4. The cryocooler according to claim 1 ,wherein the tubular magnetic shield extends over an entire movement range of the magnetic regenerator material moved by reciprocation of ...

Cryocooler with Magnetic Reciprocating Piston

A cryocooler is described that can include a pressure wave generator, and a refrigeration device (for example, a coldhead), which can be used to liquefy a gas when the gas is exposed to a surface of the refrigeration device. The pressure wave generator can include one or more motors. Each motor can include a stator, and at least one electrical coil wound around a portion of the stator. The electrical coil can generate a reversing magnetic field when alternating electric current is passed through the electrical coil. The motor can further include a pressurized container that can be placed within the space enclosed by the stator, and a piston that can be placed inside the pressurized container. The stators can be placed external to the pressurized container. The piston is made by combining magnets that have opposite and transverse polarities, and are combined adjacently on a common reciprocating axis. 1. A motor comprising:a stator defining a space;an electrical coil configured to be wound around a portion of the stator, the electrical coil configured to generate a reversing magnetic field in the stator and in the space defined by the stator when alternating electric current is passed through the electrical coil;a pressurized container configured to be placed within the space enclosed by the stator; anda piston configured to be placed inside the pressurized container, the piston sliding within the pressurized container in response to the reversing magnetic field.2. The motor of claim 1 , wherein the piston comprises a combination of a first magnet and a second magnet that have opposite and transverse polarities claim 1 , the first magnet and the second magnet being combined on a common axis.3. The motor of claim 2 , wherein:each of the first magnet and the second magnet are cylindrical;a substantial portion of the pressurized container is cylindrical; anda diameter of each of the first magnet and the second magnet is substantially equal to an inner diameter of the ...

Helium Management Control System

A helium management control system for controlling the helium refrigerant supply from a common manifold supplies cryogenic refrigerators with an appropriate helium supply. The system employs sensors to monitor and regulate the overall refrigerant supply. An appropriate supply of helium is distributed to each cryopump. If the total refrigeration supply exceeds the demand, or consumption, excess refrigerant is directed to cryogenic refrigerators which can utilize the excess helium to complete a current cooling function more quickly. If the total refrigeration demand exceeds the total refrigeration supply, the refrigerant supply to some or all of the cryogenic refrigerators will be reduced accordingly so that detrimental or slowing effects are minimized based upon the current cooling function.

Regenerator For A Cryo-Cooler That Uses Helium As A Working Gas

A regenerator of a cryo-cooler uses helium both as a working gas and as a heat storage material. The regenerator includes cells whose exterior sides form flow channels through which the working gas flows. Each cell has connected first and second cavities enclosed by a heat-conductive cell wall. The cavities contain helium that is used to store heat. Each cells is shaped as a disk. The working gas flows both through the flow channels and around the regenerator so as to exchange heat with the helium in the cavities via the heat conducting cell wall. Each cell has a pressure-equalizing opening through the cell wall whose diameter is smaller than the thickness of the cell wall. The diameter of the pressure-equalizing opening is dimensioned to permit the pressure of the helium contained in the cell to change by a maximum of 20% during any working cycle of the cryo-cooler. 119-. (canceled)20. A regenerator of a cryo-cooler that uses helium as a working gas , comprising:a first cell with a cell wall, a first cavity and a second cavity, wherein the cell wall has an exterior side and an inner side, wherein the cell wall is heat conductive, wherein the first cavity and the second cavity are connected to each other, wherein the exterior side of the cell wall forms a flow channel through which the working gas flows, wherein the first cell has a pressure-equalizing opening between the inner side and the exterior side of the cell wall, and wherein the first cavity and the second cavity contain helium that is used to store heat.21. The regenerator of claim 20 , wherein the flow channel passes through the first cell.22. The regenerator of claim 20 , wherein the first cell is shaped as a disk.23. The regenerator of claim 20 , wherein the working gas flows through the regenerator in a flow direction claim 20 , further comprising:a second cell disposed behind the first cell in the flow direction.24. The regenerator of claim 23 , wherein the first cell is separated from the second cell ...

MECHANICALLY DRIVEN AIR VEHICLE THERMAL MANAGEMENT DEVICE

The present disclosure is directed to an aircraft power generation system including a reverse Brayton cycle system, a gas turbine engine, and a gearbox. The gas turbine engine includes a compressor section, a turbine section, and an engine shaft. The compressor section is arranged in serial flow arrangement with the turbine section. The engine shaft is rotatable with at least a portion of the compressor section and with at least a portion of the turbine section. The reverse Brayton cycle system includes a compressor, a driveshaft, a turbine, and a first exchanger. The driveshaft is rotatable with the compressor or the turbine, and the compressor, the first heat exchanger, and the turbine are in serial flow arrangement. The gearbox is configured to receive mechanical energy from the engine shaft and transmit mechanical energy to the reverse Brayton cycle system through the driveshaft. 1. An aircraft power generation system , comprising:a gas turbine engine including a compressor section, a turbine section, and an engine shaft, the compressor section arranged in serial flow arrangement with the turbine section, and the engine shaft rotatable with at least a portion of the compressor section and with at least a portion of the turbine section;a reverse Brayton cycle system, including a compressor, a driveshaft, a turbine, and a first exchanger, the driveshaft rotatable with the compressor or the turbine, and the compressor, the first heat exchanger, and the turbine in serial flow arrangement; anda gearbox, wherein the gearbox is configured to receive mechanical energy from the engine shaft and transmit mechanical energy to the reverse Brayton cycle system through the driveshaft.2. The system in claim 1 , further comprising:a thermal management system; anda working fluid, wherein the working fluid is in the reverse Brayton cycle system, and wherein the working fluid is in fluid communication with the thermal management system.3. The system in claim 2 , wherein the ...

CRYOGENIC REGENERATOR AND CRYOGENIC REFRIGERATOR

In a cryogenic regenerator including a regenerator tube, a partitioning tube, whose tube wall is perforated by uniformly distributed through-holes, inside of which regenerator packing is provided, and having rib rings wrapped peripherally around its outer wall, is arranged coaxially inside the regenerator tube, with a buffer cavity between the regenerator-tube inner wall and the partitioning-tube outer wall. In a pulse-tube refrigerator including the regenerator and a gas reservoir, the regenerator, thanks to the designing of its reservoir and through-holes, draws in radial flows such that the form of heat exchange in the same regenerator cross-section goes from being simple thermal conduction to being heat exchange in which heat convection is coupled with thermal conduction, enhancing radial heat transfer and enabling rapid equilibration of temperature gradients along the regenerator periphery, and, by effectively keeping non-uniformity phenomena inside the regenerator under control, making improved refrigerator efficiency possible. 1. A cryogenic regenerator , comprising:a regenerator tube;a partitioning tube coaxially arranged inside the regenerator tube to leave a buffer cavity between an inner wall of the regenerator tube and an outer wall of the partitioning tube, the partitioning-tube's tube wall being perforated by a plurality of uniformly distributed through-holes; andregenerator packing provided inside the partitioning tube.2. The cryogenic regenerator according to claim 1 , further comprising a plurality of rib rings wrapped peripherally onto the outer wall of the partitioning tube.3. The cryogenic regenerator according to claim 2 , wherein a gap is provided between the rib rings and the inner wall of the regenerator tube.4. The cryogenic regenerator according to claim 3 , wherein the regenerator tube and the partitioning tube are fixed endwise by a flange.5. A cryogenic refrigerator claim 3 , comprising:a compressor, a transport pipe, a cooler, a ...

REVERSIBLE PNEUMATIC DRIVE EXPANDER

A pneumatically driven cryogenic refrigerator operating primarily on the Gifford-McMahon (GM) cycle is switched from cooling to heating by a switch valve between a rotary valve and a drive piston that causes the displacer to reciprocate. The rotary valve has ports at two radii, one that cycles flow to the displacer and a second that cycles flow to the drive piston. Two ports cycle flow to the top of the drive piston, the “cooling” port optimizes the cooling cycle and the “heating” port provides a good heating cycle. A switch valve that changes the flow from one port to the other can be linearly or rotary actuated. The rotary valve does not reverse direction.

Linear compressor

The present disclosure relates to a linear compressor. The linear compressor according to an aspect of the present disclosure includes a shell, a cylinder, a piston, and a muffler. Also, an internal space in which at least a portion of the muffler is inserted is formed in the piston, and the muffler is disposed in contact with the inner wall of the piston forming the internal space.

REFRIGERATION CYCLE DEVICE

A refrigeration cycle apparatus includes a first refrigerant circuit including a first compressor, a first heat exchanger, a first refrigerant flow path of a second heat exchanger, a first expansion device, a third heat exchanger, and a second refrigerant flow path of a fourth heat exchanger, and a second refrigerant circuit including a second compressor, a fifth heat exchanger, a second expansion device, a third refrigerant flow path of the second heat exchanger, and a fourth refrigerant flow path of the fourth heat exchanger. A first refrigerant flows through, in order, the first compressor, the first heat exchanger, the first refrigerant flow path, the first expansion device, the third heat exchanger, and the second refrigerant flow path. The second refrigerant flows through, in order, of the second compressor, the fifth heat exchanger, the second expansion device, the third refrigerant flow path, and the fourth refrigerant flow path. 1. A refrigeration cycle apparatus comprising:a first refrigerant circuit through which first refrigerant flows, the first refrigerant circuit including a first compressor, a first heat exchanger, a first refrigerant flow path of a second heat exchanger, a first expansion device, a third heat exchanger, and a second refrigerant flow path of a fourth heat exchanger; anda second refrigerant circuit through which second refrigerant flows, the second refrigerant circuit including a second compressor, a fifth heat exchanger, a second expansion device, a third refrigerant flow path of the second heat exchanger, and a fourth refrigerant flow path of the fourth heat exchanger,the first refrigerant flowing through the first refrigerant circuit in order of the first compressor, the first heat exchanger, the first refrigerant flow path, the first expansion device, the third heat exchanger, and the second refrigerant flow path,the second refrigerant flowing through the second refrigerant circuit in order of the second compressor, the fifth heat ...

STIRLING ENGINE DISPLACER DRIVE

A cryocooler is provided that includes: a regenerator piston; a drive coupler; and a link flexure having a proximal end coupled by a first pin to the drive coupler and having a distal end coupled by a second pin to the regenerator piston, where the link flexure forms a vane having flattened opposing faces that are orthogonal to a longitudinal axis for the first and second pin. 1. A cryocooler , comprising:a regenerator piston;a drive coupler; anda link flexure having a proximal end coupled by a first pin to the drive coupler and having a distal end coupled by a second pin to the regenerator piston,wherein the link flexure forms a vane having flattened opposing faces that are aligned orthogonally to a longitudinal axis of the first pin and to a longitudinal axis of the second pin.2. The cryocooler of claim 1 , wherein the link flexure comprises titanium.3. The cryocooler of claim 1 , wherein the link flexure comprises steel.4. The cryocooler of claim 1 , wherein the link flexure comprises aluminum.5. The cryocooler of claim 1 , further comprising a motor operable to rotate a motor shaft claim 1 , wherein the link flexure is configured to accommodate a relative alignment between a longitudinal axis of the motor shaft and a longitudinal axis of the regenerator piston.6. The cryocooler of claim 1 , wherein the link flexure is configured to provide flexibility in a transverse direction normal to the width of the flattened opposing faces.7. The cryocooler of claim 1 , further comprising a link flexure bearing configured to receive the second pin claim 1 , and wherein a clearance between the link flexure bearing and the second pin is less than or equal to 0.0002 inches.8. The cryocooler of claim 1 , further comprising a link flexure bearing configured to receive the first pin claim 1 , and wherein a clearance between the link flexure bearing and the first pin is less than or equal to 0.0002 inches.9. A cryocooler link flexure for connecting between a drive coupler and a ...

STIRLING COOLER WITH FLEXIBLE REGENERATOR DRIVE

A cooler operating on the Stirling cycle, of the type including a compressor with a compression piston moving in a compression cylinder, a regenerator with a regeneration piston moving in a regeneration cylinder, a driving crankshaft including a crank pin that can rotate with respect to the compression cylinder and/or the regeneration cylinder, and a compression connecting rod, including a head mounted on the front pin and a foot articulated on the compression piston, the regeneration piston being connected to the crankshaft by a link element including at least three rigid adjacent sections connected by at least two spring-type connecting rods. 2. A cooler according to claim 1 , in which the first and second ends of the link element are disposed on either side of a plane formed by the first axis of the compression piston and the third axis of the crankshaft.3. A cooler according to claim 1 , in which the second axis of the regeneration piston is located at a non-zero distance from the third axis of the crankshaft.4. A cooler according to claim 3 , in which the third axis is disposed between the second axis and the compression cylinder.5. A cooler according to claim 1 , in which the at least three sections are substantially rectilinear.6. A cooler according to claim 5 , in which:the at least two sections of the link element that are closest to the regeneration piston are disposed to be substantially parallel to the second axis; andat least the section that is closest to the head of the connecting rod is disposed to be substantially parallel to the first axis.7. A cooler according to claim 1 , in which the links are formed by helical torsion springs.8. A cooler according to claim 7 , in which the helical coil springs are disposed along axes that are parallel to one another.9. A cooler according to claim 7 , in which the helical coil springs are disposed along axes that are perpendicular to one another. The present invention relates to a cooler operating according to ...

STIRLING COOLER WITH FLUID TRANSFER BY DEFORMABLE CONDUIT

A cooler operating according to the Stirling cycle, including a housing including a compression cylinder and a regeneration cylinder, a movable compression piston and a movable regeneration piston, that can move in translational motion in the compression cylinder and in the regeneration cylinder, a driving crankshaft, including a rotating crank pin, and two connecting rods coupled to the compression piston and the regeneration piston, the connecting rods being coupled to the rotating crank pin, a fluid flow duct for circulating fluid, connecting the compression cylinder and the regeneration cylinder, one end of the fluid flow duct being disposed on the regeneration piston, and the fluid flow duct including a deformable pipe that is deformed in accordance with the movement of the compression piston and/or of the regeneration piston. 1. A cooler operating according to the Stirling cycle , comprising:a housing that defines an internal volume filled with a fluid, the housing including a compression cylinder and a regeneration cylinder;a movable compression piston that can move in translational motion in said compression cylinder;a movable regeneration piston that can move in translational motion in said regeneration cylinder, said housing and said compression piston and the regeneration piston respectively defining a compression chamber, a regeneration chamber, and a reference chamber disposed between said compression piston and the regeneration piston;a driving crankshaft comprising a rotating crank pin, that can rotate relative to said housing;a compression connecting rod coupled to said compression piston and a regeneration connecting rod coupled to said regeneration piston, the connecting rods being rigid, with the connecting rods in addition being coupled to said rotating crank pin, said rotating crank pin and the compression and regeneration connecting rods being disposed in the reference chamber; anda fluid flow duct for circulating fluid, a first end of the duct ...

REFRIGERATION SYSTEM INCLUDING MICRO COMPRESSOR-EXPANDER THERMAL UNITS

An active gas regenerative refrigerator includes a plurality of compressor-expander units, each having a hermetic cylinder with a drive piston configured to be driven reciprocally therein, and a quantity of working fluid in each end of the cylinder. A piston seal in a central portion of the cylinder prevents passage of the working fluid between ends of the cylinder. Movement of the piston to a first extreme results in radial compression of one of the quantities of working fluid in a cylindrical gap formed between one end of the piston and an inner surface of the cylinder, while the other quantity is expanded in the opposite end of the cylinder. The piston includes a plurality of magnets arranged in pairs, with magnets of each pair positioned with like-poles facing each other. A piston drive is configured to couple with transverse magnetic flux regions formed by the magnets. 1. An active gas regenerative refrigerator , comprising: a main cylinder having first and second cylinder ends and a central cylinder region between the first and second cylinder ends;', 'a first quantity of working fluid positioned in the first cylinder end;', 'a second quantity of working fluid positioned in the second cylinder end;', 'a drive piston positioned inside the main cylinder and having first and second piston ends and a central piston region, the first piston end having a diameter that is less than an inside diameter of the first cylinder end such that when the drive piston is moved to a first extreme, the first mass of working fluid is compressed into a first radial gap formed between a radial surface of the first piston end and an inner radial face of the first cylinder end, the second piston end having a diameter that is less than an inside diameter of the second cylinder end such that when the drive piston is moved to a second extreme, the second mass of working fluid is compressed into a second radial gap formed between a radial surface of the second piston end and an inner ...

CRYOGENIC REFRIGERATION DEVICE

Cryogenic refrigeration device comprising a working circuit intended to cool a working fluid circulating in the said circuit, the working circuit comprising, arranged in series in a loop: a compression portion, a cooling portion, a portion with valve(s), an expansion portion and a reheating portion, in order to subject the working fluid to a recuperative working cycle comprising compression, then cooling, then expansion and then reheating to prepare for a new cycle, wherein the compression portion comprises at least one compressor having a linear piston driven by a linear motor, the expansion proportion comprises at least one expander with a linear piston, the portion with valve(s) comprises at least one regulating valve linearly actuated by a linear motor and controlled in order to supply or extract the working fluid from the at least one expansion piston. 115-. (canceled)16. A cryogenic refrigeration device comprising a working circuit intended to cool a working fluid circulating in said circuit , the working circuit comprising , arranged in series in a loop , a compression portion , a cooling portion , a portion with valve(s) , an expansion portion and a reheating portion , in order to subject the working fluid to a recuperative working cycle comprising compression , then cooling , then expansion and then reheating to prepare for a new cycle , in which the compression portion comprises at least one compressor with a linear piston driven by a linear motor , the expansion portion comprises at least one expander with a linear piston , the portion with valve(s) comprises at least one regulating valve of the linear type actuated by a linear motor and controlled in order to supply or extract the working fluid to or from the at least one piston expander.17. The refrigeration device of claim 16 , wherein at least one linear motor couples at least one of said at least one expander with a linear piston and at least one of said at least one compressor with a linear piston. ...

Rotary valve of cryocooler and cryocooler

A rotary valve of a cryocooler includes a valve stator, a valve rotor, a rotation member that rotates the valve rotor around an axis with respect to the valve stator, and a rotor holder connected to the valve rotor so as to rotate around an axis together with the valve rotor, and forming a low pressure section having a pressure lower than an ambient pressure between the valve rotor and the rotor holder so as to reduce an axial force of pressing the valve rotor against the valve stator. The rotation member is connected to the rotor holder so as to rotate the valve rotor around the axis via the rotor holder. The rotor holder is disposed between the rotation member and the valve rotor in an axial direction, and is movable in the axial direction with respect to the rotation member.

PULSE TUBE CRYOCOOLER WITH AXIALLY-ALIGNED COMPONENTS

A pulse-tube cryocooler includes a compressor piston that is axially aligned with a pulse tube. The compressor piston is an annular piston that has a central hole around its axis. An inertance tube, connected to one end of the pulse tube, runs through the central hole in the compressor piston. The cryocooler also includes a balancer that moves in opposition to the compressor piston, to offset the forces in moving the compressor piston. The balancer may also be axially aligned with the pulse tube, the annular piston, and the inertance tube. The alignment of the compressor piston, the pulse tube, and the inertance tube aligns the forces produced by movement of fluid within the cryocooler. This makes it easier to cancel mechanical forces produced by the cryocooler in operation, since all (or most) of the forces are in a single axial direction. 1. A cryocooler comprising:a pulse tube;a regenerator; anda compressor;wherein the compressor includes a compressor piston axially-aligned with the pulse tube, wherein movement of the piston pushes a working fluid through the regenerator and the pulse tube.2. The cryocooler of claim 1 , wherein the compressor piston is annular piston having a central hole therethrough.3. The cryocooler of claim 2 , further comprising a straight inertance tube segment claim 2 , connected to the pulse tube and passing through the central hole claim 2 , whereby the straight inertance tube segment is axially aligned with the compressor piston and the pulse tube.4. The cryocooler of claim 3 , further comprising a coil of tubing attached to an end of the straight inertance tube segment that is opposite the pulse tube.5. The cryocooler of claim 1 , further comprising a balancer that is operatively coupled to the compressor piston to move in an opposite direction from the compressor piston claim 1 , to balance forces produced by movement of the compressor piston.6. The cryocooler of claim 5 , wherein the balancer is actively controlled.7. The cryocooler ...

GAS TURBINE ENGINE WITH TRANSCRITICAL VAPOR CYCLE COOLING

A gas turbine engine has a compressor section, a combustor, and a turbine section. An associated fluid is to be cooled and an associated fluid is to be heated. A transcritical vapor cycle heats the fluid to be heated, and cools the fluid to be cooled. The transcritical vapor cycle includes a gas cooler in which the fluid to be heated is heated by a refrigerant in the transcritical vapor cycle. An evaporator heat exchanger at which the fluid to be cooled is cooled by the refrigerant in the transcritical vapor cycle. A compressor upstream of the gas cooler compresses the refrigerant to a pressure above a critical point for the refrigerant. An expansion device expands the refrigerant downstream of the gas cooler, with the evaporator heat exchanger being downstream of the expansion device, and such that the refrigerant passing through the gas cooler to heat the fluid to be heated is generally above the critical point. 1. A gas turbine engine comprising:a compressor section, a combustor, and a turbine section; andan associated fluid to be cooled, an associated fluid to be heated, and a transcritical vapor cycle for heating said fluid to be heated, and for cooling said fluid to be cooled, said transcritical vapor cycle including a gas cooler, in which said fluid to be heated is heated by a refrigerant in said transcritical vapor cycle and an evaporator heat exchanger at which said fluid to be cooled is cooled by the refrigerant in said transcritical vapor cycle, a compressor upstream of said gas cooler for compressing the refrigerant to a pressure above a critical point for the refrigerant, and an expansion device for expanding the refrigerant downstream of said gas cooler, with said evaporator heat exchanger being downstream of said expansion device, and such that the refrigerant passing through said gas cooler to heat said fluid to be heated is generally above the critical point.2. The gas turbine engine as set forth in claim 1 , wherein said fluid to be heated is fuel ...

RARE-EARTH REGENERATOR MATERIAL PARTICLES, AND GROUP OF RARE-EARTH REGENERATOR MATERIAL PARTICLES, REFRIGERATOR AND MEASURING APPARATUS USING THE SAME, AND METHOD FOR MANUFACTURING THE SAME

Provided is a group of rare-earth regenerator material particles having an average particle size of 0.01 to 3 mm, wherein the proportion of particles having a ratio of a long diameter to a short diameter of 2 or less is 90% or more by number, and the proportion of particles having a depressed portion having a length of 1/10 to ½ of a circumferential length on a particle surface is 30% or more by number. By forming the depressed portion on the surface of the regenerator material particles, it is possible to increase permeability of an operating medium gas and a contact surface area with the operating medium gas. 117-: (canceled)18: A refrigerator for accumulating an extremely low temperature cold , comprising:a vacuum chamber;an external cylinder disposed in the vacuum chamber, the external cylinder enclosing an inner space;a first regenerator container for accumulating cold and a second regenerator container for accumulating cold which are arranged at the inner space inside of the external cylinders, the first regenerator for accumulating a first cold generated at a first cooling stage, the second regenerator for accumulating a second cold generated by further cooling the first cold at a second cooling stage, 'a second group of regenerator material particles packed in the second regenerator container, the second group of regenerator material particles comprising a rare-earth metal and having an average particle size of 0.01 to 3 (0.045 to 0.5) mm,', 'a mesh-like member packed in the first regenerator for accumulating cold, and'}wherein a proportion of particles having a ratio of a long diameter to a short diameter of 2 or less is 90% or more by number,a proportion of particles having a depressed portion having a length of 1/10 to ½ of a particle circumferential length of a particle on a particle surface is 30% or more by number and wherein the depressed portion has depth of 1/10 or less of a particle diameter, and the depressed portion has channel-shape or a hole- ...

Green Cycle Heat Pump Engine

A single piston (), rotary displacer (), heat cycle/transfer engine, using a fixed volume of working fluid, in a single L shape tubular chambered (), three zone ()()(), sealed housing (). The rotary displacer () consists of a displacer cam () and a crank shaft () supported by a variable number of rotary bearings (), the number and type of which depends on the size and rotational speed of the completed unit. The sealed housing (), consisting of three zones, where one faces a heat source side (), one acts an insulating barrier () and one acts as a heat sink (). Movement of the rotary displacer () transports the contained working fluid to the exposed surfaces of the heat source side () and the heat sink () sequentially, while the incorporated crank shaft () drives the single piston (), via a connecting rod (), which allows for the manipulation of the corresponding expansion and contraction of the working fluid. The engine can use the transfer of heat, the Carnot Heat Cycle, to generate rotational (or linear) power or act as a heat pump/refrigeration unit. When used to produce rotational power, the initial rotational energy may be provided by a loop of Nitinol () or similar shape memory alloy to avoid a stall caused by the working fluid being exposed to the heat source side and heat sink side equally. The Nitinol loop () may ride on a second shape memory alloy ring (), which allows it to disengage at higher temperatures and rotational speeds, effectively acting as a clutching mechanism. The invention is scalable to include nano-devices and micro electromechanical systems (MEMS), through large scale heat recovery systems. 1. A heat cycle/transfer engine , comprising:a housing, consisting of a heat source side and a heat sink side, which may have an insulating layer between the two sides;a sealed, tubular, approximately L shaped chamber, within the housing;a working fluid, contained within the sealed chamber;a rotary crank shaft-displacer cam combination, which moves the ...

Rare earth oxysulfide cold storage medium

A cold storage material having a large thermal capacity in a ultra-low temperature range of 10 K or less and being highly durable against thermal shock and mechanical vibration. The cold storage material contains a rare earth oxysulfide ceramic represented by the general formula R2O2S in which R is one or more kinds of rare earth elements selected from La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y, and Al2O3 having a specific surface area of 0.3 m2/g to 11 m2/g is added to the cold storage material.

CRYOCOOLER

A cryocooler include a pressure control valve, a valve housing which accommodates the pressure control valve, a motor which includes a motor output shaft, a reduction mechanism which connects the motor output shaft to the pressure control valve in a power transmittable manner, and a magnetic shield case which encloses the motor and is hermetically connected to the valve housing. The motor may include a motor case from which the motor output shaft protrudes. The magnetic shield case may enclose the motor outside the motor case. 1. A cryocooler comprising:a pressure control valve;a valve housing which accommodates the pressure control valve;an electromagnetic motor which includes a motor case and a motor output shaft which protrudes from the motor case;a reduction mechanism which connects the motor output shaft to the pressure control valve in a power transmittable manner; anda magnetic shield case which encloses the electromagnetic motor outside the motor case and is hermetically connected to the valve housing.2. The cryocooler according to claim 1 , further comprising;a speed reducer case which accommodates the reduction mechanism,wherein the magnetic shield case is hermetically connected to the valve housing via the speed reducer case.3. The cryocooler according to claim 2 ,wherein the speed reducer case includes a speed reducer case body formed of a nonmagnetic material, and a magnetic shield member which is formed of a magnetic material, is hermetically connected to the speed reducer case body, includes a through-hole through which the motor output shaft passes, and is disposed between the motor case and the reduction mechanism, andwherein the magnetic shield case is hermetically connected to the magnetic shield member.4. The cryocooler according to claim 1 ,wherein the reduction mechanism is accommodated in the valve housing.5. The cryocooler according to claim 4 ,wherein the valve housing includes a valve housing body formed of a nonmagnetic material, and a ...

GM CRYOCOOLER

A GM cryocooler includes a valve portion which defines a valve group including a first intake valve, a first exhaust valve, and a pressure equalizing valve. A valve rotor of the valve portion includes a rotor plane which is in surface contact with a stator plane of a valve stator. The valve rotor includes a high pressure flow path which is open to the rotor plane to form a portion of the first intake valve, a low pressure flow path which is open to the rotor plane to form a portion of the first exhaust valve, and a pressure equalization flow path which is open to the rotor plane to form a portion of the pressure equalizing valve, and the high pressure flow path, the low pressure flow path, and the pressure equalization flow path are circumferentially arranged around a valve rotation axis on the rotor plane. 1. A GM cryocooler comprising:a first cold head which includes a first displacer and a first cylinder which forms a first gas chamber between the first displacer and the first cylinder;a second cold head which includes a second displacer and a second cylinder which forms a second gas chamber between the second displacer and the second cylinder; anda valve portion which defines a valve group including a first intake valve configured to perform intake of the first gas chamber, a first exhaust valve configured to perform exhaust of the first gas chamber, and a pressure equalizing valve configured to perform pressure equalization between the first gas chamber and the second gas chamber, the valve portion including a valve stator which has a stator plane perpendicular to a valve rotation axis and a valve rotor which has a rotor plane perpendicular to the valve rotation axis to be in surface contact with the stator plane and is rotatable around the valve rotation axis with respect to the valve stator,wherein the valve rotor includes a high pressure flow path which is open to the rotor plane to form a portion of the first intake valve, a low pressure flow path which is ...

CRYOCOOLER AND FLOW PATH SWITCHING MECHANISM OF CRYOCOOLER

A cryocooler includes a cold head including a displacer movable in an axial direction, a drive piston connected to the displacer to move the displacer in the axial direction, an expansion chamber formed with the displacer, a piston drive chamber formed with the drive piston, a spool valve including a valve drive chamber, a spool that moves between a first position and a second position in response to a pressure of the valve drive chamber, and a pressure control mechanism configured to control a pressure of the valve drive chamber so that the spool reciprocates between the first position and the second position, and to generate a pressure fluctuation having an opposite phase to the pressure fluctuation in the expansion chamber in the piston drive chamber in synchronization with the reciprocation of the spool. 1. A cryocooler comprising:a cold head including a displacer movable in an axial direction, a drive piston connected to the displacer to move the displacer in the axial direction, an expansion chamber being formed with the displacer, and a piston drive chamber being formed with the drive piston, the drive piston being driven in the axial direction by a pressure difference between the piston drive chamber and the expansion chamber;a spool valve including a valve drive chamber and a spool that moves between a first position and a second position in response to a pressure of the valve drive chamber, the spool connecting the expansion chamber to a compressor discharge port at the first position, the spool connecting the expansion chamber to a compressor suction port at the second position, and the spool reciprocating between the first position and the second position to generate a periodic pressure fluctuation in the expansion chamber; anda pressure control mechanism configured to control a pressure of the valve drive chamber so that the spool reciprocates between the first position and the second position, and to generate a pressure fluctuation having an opposite ...

STIRLING ENGINE FOR AN EMISSION-FREE AIRCRAFT

Aircraft with an emission-free drive and method for emission-free driving of an aircraft. The aircraft includes an aircraft thruster structured and arranged to generate thrust force on the aircraft, an aircraft lift device structured and arranged to generate lift on the aircraft, and a heat engine, which is structured and arranged to convert thermal energy into kinetic energy to drive the aircraft thruster, that includes at least one flat-plate Stirling engine drivable by solar thermal radiation. 1. An aircraft with an emission-free drive , comprising:an aircraft thruster structured and arranged to generate thrust force on the aircraft;an aircraft lift device structured and arranged to generate lift on the aircraft; anda heat engine, which is structured and arranged to convert thermal energy into kinetic energy to drive the aircraft thruster, comprising at least one flat-plate Stirling engine drivable by solar thermal radiation.2. The aircraft according to claim 1 , wherein the aircraft lift device comprises a wing with an airfoil section structured and arranged to generate lift claim 1 , and the flat-plate Stirling engine is arranged in the wing.3. The aircraft according to claim 1 , the flat-plate Stirling engine comprising:a working chamber filled with a working gas and having a top and an underside and a changeable working volume;a displacer structured and arranged to be moveable in the working chamber between the top and the underside;a regenerator structured and arranged in the working chamber to collect and deliver thermal energy contained in the working gas;a working piston connected to change a working volume of the working chamber;a rotatable inertia element comprising at least one of a propeller or a flywheel;a drive structured and arranged to be connectable to the inertia element to drive the aircraft thruster; anda transmission structured and arranged to mechanically couple the displacer and the working piston with the inertia element,wherein the ...

GM CRYOCOOLER

A GM cryocooler is furnished with: a first cold head including a first displacer and a first cylinder; a second cold head including a second displacer and a second cylinder and being disposed opposing the first cold head; a common drive mechanism for driving axial reciprocation of the first displacer and the second displacer; and a working gas circuit for generating between the first cold head and the second cold head a pressure differential that assists the common drive mechanism. 1. A Gifford-McMahon (GM) cryocooler , comprising:a first cold head including an axially reciprocatory first displacer, and a first cylinder, between the first displacer and which a first gas chamber is formed;a second cold head including a second displacer disposed coaxially with respect to the first displacer and axially reciprocatory unitarily with the first displacer, and a second cylinder, between the second displacer and which a second gas chamber is formed, and disposed opposing the first cold head;a common drive mechanism connected to the first displacer and the second displacer such as to drive axial reciprocation of the first displacer and the second displacer; anda working gas circuit connected to the first cold head and the second cold head such as to generate between the first gas chamber and the second gas chamber a pressure differential assisting the common drive mechanism.2. The GM cryocooler according to claim 1 , wherein: a reciprocation drive source,', 'a first connection rod axially extending from the reciprocation drive source and connecting the reciprocation drive source to the first displacer, and', 'a second connection rod axially extending from the reciprocation drive source on a side thereof opposite from the first connection rod, and connecting the reciprocation drive source to the second displacer; and, 'the common drive mechanism includes'}the axial reciprocation of the first displacer is of phase inverse from that of the axial reciprocation of the second ...

CRYOCOOLER REGENERATOR MATERIAL, CRYOGENIC REGENERATOR, REGENERATIVE CRYOCOOLER AND SYSTEM COMPRISING REGENERATIVE CRYOCOOLER

One embodiment provides a cryogenic regenerator material containing as the main constituent at least one compound (A) containing at least one metallic element M and at least one non-metallic element X selected from O, S, N and F. The compound (A) in the cryogenic regenerator material has a half width of a main peak of 0.2 degrees or more obtained by the powder X-ray diffraction measurement. 1. A cryogenic regenerator material containing as a main constituent at least one compound (A) comprising at least one metallic element M and at least one non-metallic element X selected from O , S , N and F , wherein a half width of a main peak obtained by a powder X-ray diffraction measurement on the compound (A) is 0.2 degrees or more.2. The cryogenic regenerator material of claim 1 , which is a bulk body.3. The cryogenic regenerator material of claim 1 , which contains the compound (A) in an amount of 40% or more with respect to the whole volume of the cryogenic regenerator material.4. The cryogenic regenerator material of claim 1 , wherein a density of the cryogenic regenerator material is 60% or more with respect to a theoretical density of the compound (A).5. The cryogenic regenerator material of claim 1 , wherein the compound (A) has a crystal structure containing at least one unit structure selected from a tetrahedral framework and octahedral framework each comprising the at least one non-metallic element X and the at least one metallic element M claim 1 , wherein the tetrahedral framework and the octahedral framework are such that each vertex is occupied by the metallic element M with the center occupied by the non-metallic element X claim 1 , or each vertex is occupied by the non-metallic element X with the center occupied by the metallic element M.6. The cryogenic regenerator material of claim 5 , wherein the compound (A) comprises two or more unit structures selected from the tetrahedral framework and the octahedral framework in the crystal structure claim 5 , and at ...

Regenerator

Regenerators for Stirling engines and Vuilleumier heat pumps are difficult to reliably manufacture. A regenerator is disclosed in which edges of the regenerator wire meshes are coated with a stabilizing material. The regenerator wire meshes are then sufficiently stable to be machined to the dimensions of the housing. In some embodiments, the material on the outer surface of the edges of the regenerator is relatively thermally insulating to limit heat transfer to the housing. 1. A regenerator , comprising:a plurality of wire mesh layers forming a three-dimensional volume wherein each layer has a substantially similar cross-sectional shape and the plurality of wire mesh layers lying in mutually parallel planes; and the sides are machined to a desired shape and surface finish; and', a woven fabric of wires;', 'a random, substantially planar layer of wires; and', 'a planar, non-woven, regular pattern of wires., 'the wire mesh layers comprise at least one of], 'a material applied to sides of the regenerator, the sides being perpendicular to the mutually parallel planes of the wire mesh layers wherein2. The regenerator of wherein the material is added via one of: plasma spraying and thermal spraying.3. The regenerator of wherein:the material applied to the sides is one of a liquid paste and a powder:the liquid paste is one of: a liquid metal that is liquid due to being at high temperature and a braze paste that includes metallic particles and a solvent with the solvent driven off via heating the regenerator; andthe powder forms a solid when cooled after heating to a predetermined temperature.4. The regenerator of wherein the material is applied by an electrochemical plating process.5. The regenerator of wherein the material is a relative thermal insulator having a thermal conductivity less than about 30 W/m-K.6. The regenerator of claim 1 , further comprising:a coating applied to the material on the sides of the regenerator, the coating having a thermal conductivity much ...

High efficiency refrigerator

A thermal storage container is coupled to a pump for circulating cooled liquid from the thermal storage container in at least one of two circuits. One circuit includes a heat exchanger coupled to the fresh food evaporator for assisting in cooling the fresh food section of the refrigerator or for chilling the liquid. Another circuit includes a sub-cooler between the condenser and the evaporator for cooling the output from the condenser before entering the evaporator, herby increasing the efficiency of the system. A three-way valve is coupled from the output pump to couple the stored coolant selectively to one or the other or both of the coolant circuits.

CRYOCOOLER AND MAGNETIC SHIELD

A cryocooler includes a second-stage cooling stage, a second cylinder which includes the second-stage cooling stage on a terminal of the second-stage cylinder, a second-stage displacer which includes a magnetic regenerator material and is accommodated in the second-stage cylinder so as to be able to reciprocate in the second-stage cylinder, and a tubular magnetic shield which is installed on the second-stage cooling stage and extends along the second-stage cylinder outside the second-stage cylinder. The magnetic shield is formed of a normal conductor and a product of an electrical conductivity in a temperature range of 10 K (Kelvin) or less and a thickness of the tubular magnetic shield is 60 MS (Mega-Siemens) to 1980 MS. 1. A cryocooler comprising:a cooling stage cooled to a cryogenic temperature around or below 4.2 K;a cylinder which includes the cooling stage on a terminal of the cylinder;a displacer which includes a magnetic regenerator material and is accommodated in the cylinder so as to be able to reciprocate in the cylinder; anda tubular magnetic shield which is installed on the cooling stage and extends along the cylinder outside of the cylinder,wherein the tubular magnetic shield is formed of a normal conductor and a product of an electrical conductivity in a temperature range of 10 K (Kelvin) or less and a thickness of the tubular magnetic shield is formed to have a conductance of 60 MS (Mega-Siemens) to 1980 MS,wherein the tubular magnetic shield is formed of pure copper and cooled to the cryogenic temperature around or below 4.2 K.2. The cryocooler according to claim 1 , wherein in the tubular magnetic shield claim 1 , the product of the electrical conductivity in the temperature range of 10 K or less and the thickness of the tubular magnetic shield is formed to have a conductance of 89 MS to 1980 MS.3. The cryocooler according to claim 1 , wherein in the tubular magnetic shield claim 1 , the product of the electrical conductivity in the temperature ...

Miniaturized gas refrigeration device with two or more thermal regenerator sections

The size of a miniature cryocooler operating on the Stirling refrigeration cycle is further reduced by shortening a first thermal regenerator module (R) disposed on a cold side of a thermal barrier (T) and providing a second thermal regenerator module (R 1 ) disposed on a warm side of the thermal barrier (T). A thermally insulated fluid flow passage is disposed to interconnect the first and second regenerator modules to thermally insulate the fluid passage. In combination, the first and second regenerator modules provide 100% thermal regenerator effectiveness in the device.

FREE PISTON STIRLING REFRIGERATOR

A free piston Stirling refrigerator of the present invention has a cylinder provided inside a casing; a piston and a displacer that are provided in a way such that they are capable of reciprocating inside the cylinder; a linear motor for reciprocating the piston; and a control unit for controlling the operation of the linear motor. Particularly, the control unit has an inverter circuit for generating an alternating current with a given frequency and then supplying the alternating current to the linear motor; a current detection circuit for detecting the current outputted from the inverter circuit; and a control circuit for controlling the output from the inverter circuit based on a turbulence in the current detected by the current detection circuit. Thus, collisions between the piston and the displacer (i.e. hitting) can be restricted through an inexpensive configuration and a simple control. 1. A free piston Stirling refrigerator comprising:a casing;a cylinder provided inside the casing;a piston provided in a way such that the piston is capable of reciprocating inside the cylinder;a linear motor for reciprocating the piston;a displacer reciprocating inside the cylinder in conjunction with the reciprocation of the piston; anda control unit for controlling an operation of the linear motor, wherein the control unit has:an inverter circuit for generating an alternating current with a given frequency and then supplying the alternating current to the linear motor;a current detection circuit for detecting the alternating current outputted from the inverter circuit; anda control circuit for controlling the alternating current outputted from the inverter circuit based on a turbulence in the alternating current that is detected by the current detection circuit.2. The free piston Stirling refrigerator according to claim 1 , wherein the control circuit calculates a difference value by comparing a waveform detected by the current detection circuit and a reference waveform per ...

A Thermally-Driven Heat Pump Having a Heat Exchanger Located Between Displacers

A thermally driven heat pump is disclosed in which at least most of the warm heat exchanger is disposed within the cylinder between the hot and cold displacers. Such an arrangement is not suitable for a prior art heat pump in which movement of the displacers is based on a crank because it would lead to too much dead volume in the system. However, with mechatronically-controlled displacers in which the displacers are independently controlled, the displacers can reciprocate up to the heat exchanger. Such a configuration reduces dead volume compared to prior art Vuilleumier heat pumps in which the warm exchanger occupies a portion of an annular space between the cylinder in which the displacers move. 1. A heat pump , comprising:a heat pump housing having: a hot cap, a cold cap, a hot cylinder portion proximate the hot cap, and a cold cylinder portion proximate the cold cap;a cold displacer disposed within the cold cylinder portion;a hot displacer disposed within the hot cylinder portion; and the cold displacer reciprocates between the warm heat exchanger and the cold cap; and', 'the hot displacer reciprocates between the warm heat exchanger and the hot cap., 'a substantially disk-shaped warm heat exchanger between the hot cylinder portion and the cold cylinder portion wherein2. The heat pump of claim 1 , further comprising:a post coupled to the cold cap and extending toward the hot cap along a centerline of the cold cylinder portion wherein:an opening is defined in the warm heat exchanger to accommodate the post; anda diameter of the opening in the warm heat exchanger is less than a diameter of the cold displacer.3. The heat pump of claim 1 , further comprising:a hot heat exchanger located proximate the hot cap and fluidly coupled to the hot cylinder portion; anda hot regenerator having one end fluidly coupled to the hot heat exchanger and one end fluidly coupled to the cold cylinder portion.4. The heat pump of claim 1 , further comprising:a cold heat exchanger fluidly ...

Self-pressure-relief air distribution mechanism and cryogenic refrigerator using same

Disclosed are a self-pressure-relief air distribution mechanism and a corresponding cryogenic refrigerator. The self-pressure-relief air distribution mechanism includes an air distribution valve (6) and a rotary valve (7), where a rear face of the air distribution valve (6) is divided into a high-pressure face (66) and a low-pressure face (65), and the high-pressure face (66) and the low-pressure face (65) are hermetically separated by a third sealing ring (b3) that seals the air distribution valve (6) and a cover (2); and the air distribution valve (6) is provided with a pressure-relief hole (61) that axially penetrates an air distribution face (64) and the low-pressure face (65) of the air distribution valve (6), and a low-pressure passage (22) of the cover (2) can communicate with the rear face of the air distribution valve (6) via the pressure-relief hole (61), to guide a low-pressure airflow in the cover (2) to the rear face of the air distribution valve (6). The cryogenic refrigerator includes the self-pressure-relief air distribution mechanism. With the provision of the pressure-relief hole (61) and the third sealing ring (b3), the self-pressure-relief air distribution mechanism has a reduced pressure receiving area, thereby reducing a positive acting force and reducing wear.

PULSE TUBE REFRIGERATOR

In a pulse tube refrigerator, a first pulse tube has a low-temperature end, and a high-temperature end connected to a compressor. A first regenerator has a low-temperature end connected to the low-temperature end of the first pulse tube, and a high-temperature end connected to the compressor. A second pulse tube has a high-temperature end connected to the compressor, and a low-temperature end having a lower temperature than the low-temperature end of the first pulse tube. A second regenerator has a high-temperature end, and a low-temperature end connected to the low-temperature end of the second pulse tube, and is arranged side by side with the second pulse tube. The second pulse tube includes a narrowed portion nearer a low-temperature end side than a position corresponding to the high-temperature end of the second regenerator. 1. A pulse tube refrigerator comprising:a compressor that compresses a refrigerant gas;a first pulse tube that has a low-temperature end and a high-temperature end connected to the compressor;a first regenerator that has a low-temperature end connected to the low-temperature end of the first pulse tube and a high-temperature end connected to the compressor;a second pulse tube that has a high-temperature end connected to the compressor and a low-temperature end having a lower temperature than the low-temperature end of the first pulse tube; anda second regenerator that has a high-temperature end and a low-temperature end connected to the low-temperature end of the second pulse tube and is arranged side by side with the second pulse tube,wherein the second pulse tube includes a narrowed portion nearer a low-temperature end side than a position corresponding to the high-temperature end of the second regenerator.2. The pulse tube refrigerator according to claim 1 ,wherein the second regenerator includes:a first regenerator material that is arranged on a high-temperature side; anda second regenerator material that is arranged on a low-temperature ...

CRYOCOOLER AND ROTARY VALVE MECHANISM

A rotary valve mechanism includes a stator valve member furnished with one of either a dome-shaped high-pressure recess area made of a polymer or a high-pressure flow path made of metal, and a rotor valve member furnished with the other of either the dome-shaped high-pressure recess area made of a polymer or the high-pressure flow path made of metal, and seals a high-pressure region being the high-pressure flow path communicated with the dome-shaped high-pressure recess area and is disposed adjoining the stator valve member such as to isolate the high-pressure region from its low-pressure surrounding environs. 1. A cryocooler comprising:a working gas compressor provided with a compressor expulsion port and a compressor suction port;an expander provided with a gas expansion chamber and a low-pressure gas chamber communicated with the compressor suction port;a stator valve member disposed in the low-pressure gas chamber, and provided with a stator-side rotary sliding surface, a high-pressure gas inlet port opening on the stator-side rotary sliding surface and communicated with the compressor expulsion port, and a gas venting port opening on the stator-side rotary sliding surface and communicated with the gas expansion chamber; anda rotor-valve polymer member disposed in the low-pressure gas chamber such as to rotate about an axis with respect to the stator valve member and configured such as to isolate a rotor valve high-pressure recess area from the low-pressure gas chamber, the rotor valve high-pressure recess area being formed such as to communicate the high-pressure gas inlet port with the gas venting port in a portion of a single cycle of rotation of the rotor-valve polymer member and to cut off the high-pressure gas inlet port from the gas venting port in the remainder of the single cycle; wherein a rotor-valve outer peripheral surface facing the low-pressure gas chamber,', 'a rotor-side rotary sliding surface surrounding the rotor valve high-pressure recess ...

MOTORIZED BALANCED CRYOCOOLER EXPANDER SYSTEMS AND METHODS

Techniques are disclosed for systems and methods to reduce mechanical vibrations within a cryocooler/refrigeration system configured to provide cryogenic and/or general cooling of a device or sensor system. A cryocooler includes a motor driver controller configured to receive operational parameters and generate motor driver control signals and/or balancer system control signals based, at least in part, on the received operational parameters, and a motor driver configured to receive the control signals and generate drive signals to drive a motor and/or a balancer system of the cryocooler. The cryocooler includes a motorized and/or actively balanced expander configured to drive and/or balance motion of a displacer of the expander. The expander includes a magnet ring fixed to the displacer and a motor coil disposed within a cylinder head of the motorized and/or actively balanced expander. 1. A cryocooler controller comprising:a motor driver controller configured to receive operational parameters corresponding to operation of a cryocooler controlled by the cryocooler controller and generate motor driver control signals and/or balancer system control signals based, at least in part, on the received operational parameters; and the cryocooler comprises a motorized and/or actively balanced expander configured to drive and/or balance motion of a displacer of the motorized and/or actively balanced expander;', 'the motorized and/or actively balanced expander comprises a magnet ring fixed to the displacer and a motor coil disposed within a cylinder head of the motorized and/or actively balanced expander., 'a motor driver configured to receive the motor driver control signals and/or the balancer system control signals from the motor driver controller and generate drive signals based, at least in part, on the motor driver control signals and/or the balancer system control signals, to drive a motor and/or a balancer system of the cryocooler, wherein2. The cryocooler controller of ...

FREE PISTON STIRLING COOLER TEMPERATURE CONTROL SYSTEM FOR SEMICONDUCTOR TEST

A portable cooling system and apparatus for semiconductor device testing includes a free piston Stirling cooler. This eliminates the need for cumbersome remotely located equipment, such as a chillers, compressors, coolant storage equipment, hoses and hose connections. An electrical power line and an air supply line are routed from a head control unit to a portable system control unit. The head control unit is positioned by an adjustable frame structure to locate the Stirling cooler vertically directly over a semiconductor device under test. The head control unit includes a thermal adapter system, which is configured between the free piston Stirling cooler and the semiconductor device under test. 1. A portable semiconductor cooling apparatus , comprising:a free piston stirling cooler (FPSC);a support member configured for locating the FPSC directly over a semiconductor device under test in a vertical orientation; anda thermal adapter coupled to the FPSC and configured for coupling to the semiconductor device under test.2. The apparatus of claim 1 , comprising a portable system control unit coupled to the free piston stirling cooler.3. The apparatus of claim 2 , comprising an electrical power line extending between the portable system control unit and the FPSC.4. The apparatus of claim 3 , comprising an air supply line extending between the portable system control unit and the FPSC.5. The apparatus of claim 4 , wherein the electrical power line and the air supply line are supported by the support member.6. The apparatus of claim 1 , comprising an adjustable support frame including the support member claim 1 , the adjustable support frame configured for locating and orienting the FPSC in a fixed location proximate to the semiconductor device under test.7. The apparatus of claim 6 , wherein the FPSC is suspended vertically above the semiconductor under test.8. The apparatus of claim 7 , comprising:a support frame base coupled to the adjustable support frame, the support ...

A MULTISTAGE WAVE ROTOR REFRIGERATOR

It is a kind of multistage wave rotor refrigerator which could be used in the field of gas expansion refrigeration. The refrigerator is mainly composed of a casing, a left end cover, a right end cover, a wave rotor, a central shaft, a high pressure inlet nozzle, a medium pressure outlet nozzle and a drive mechanism. Within the structure of the refrigerator, 2-8 times unsteady expansion of gas could get realized, which improves the refrigeration efficiency under large pressure ratio. Extending the structure of the refrigerator and changing the structure of end cover could help realize multistage expansion refrigeration of gas. The double opening structure of oscillation tubes could help the refrigerator work regularly with high moisture content of gas. This refrigerator is a gas expansion refrigeration device that uses moving unsteady pressure waves in oscillation tubes to realize the separation of the heat and cold of gas. Improvement of refrigeration efficiency could be done by recycling expansion work in the form of pressure energy that formed by expansion of high pressure gas. 120192552852828275201925192817172528651925192565225282023a. A multistage wave rotor refrigerator includes a casing () , a left end cover () and a right end cover (); The characteristics of the refrigerator include a wave rotor () , a central shaft () , high pressure inlet nozzles , medium pressure outlet nozzles and a drive mechanism; The wave rotor () is fixed on the circular disk () of central shaft () through bolts (); The wave rotor () is placed in the casing () whose left side is set with the left end cover () and right side the right end cover (); Between the left end cover () and the left side of central shaft () there are two bearings () behave as support; Another two bearings () behave as support between the right end cover () and the right side of central shaft (); Oscillation tubes () with constant cross-section are set in the wave rotor () in circumferential direction; On the ...

Stirling-cycle cooling device with external rotor motor

A cooling device implementing a stirling-type thermodynamic cycle includes a compressor with a reciprocating piston driven by an electric motor rotating about an axis via a crankshaft. The electric motor comprises an internal stator and an external rotor and is connected to the crankshaft via a link with at least one degree of freedom in rotation about the axis of the electric motor.

NON-ROTATING FLEXURE BEARINGS WITH ENHANCED DYNAMIC STABILITY FOR CRYOCOOLERS AND OTHER DEVICES

A system includes a device, a support structure, and a flexure bearing configured to connect the device to the support structure. The flexure bearing includes an outer hub and an inner hub, where the hubs are configured to be secured to the support structure and to the device. The flexure bearing also includes multiple sets of flexure arms connecting the outer hub and the inner hub, where each set of flexure arms includes symmetric flexure arms. The flexure bearing further includes multiple bridges, where each bridge connects one of the flexure arms in one set of flexure arms to one of the flexure arms in an adjacent set of flexure arms. 1. An apparatus comprising:an outer hub and an inner hub, the hubs configured to be secured to a support structure and to a device;multiple sets of flexure arms connecting the outer hub and the inner hub, each set of flexure arms including symmetric flexure arms; andmultiple bridges each connecting one of the flexure arms in one set of flexure arms to one of the flexure arms in an adjacent set of flexure arms.2. The apparatus of claim 1 , wherein the bridges are configured such that straining of the bridges dissipates energy to prevent harmonic motions of the flexure arms.3. The apparatus of claim 2 , wherein the bridges increase an overall stiffness of the apparatus compared to a stiffness of the apparatus without the bridges.4. The apparatus of claim 1 , wherein each bridge extends linearly between the flexure arms connected by that bridge.5. The apparatus of claim 1 , wherein each bridge follows a curved or arched path between the flexure arms connected by that bridge.6. The apparatus of claim 1 , wherein:at least two bridges connect one of the flexure arms in each set to a flexure arm in a first adjacent set; andat least two other bridges connect another of the flexure arms in each set to a flexure arm in a second adjacent set.7. The apparatus of claim 1 , wherein the sets of flexure arms are positioned radially around a central ...

CRYOGENIC REFRIGERATOR AND ROTARY JOINT

A cryogenic refrigerator includes a compressor for installation on a stationary component, an expander for installation on a rotating component, and a rotary joint fluidly coupling the compressor with the expander. The rotary joint includes: a rotor fixed to the rotating component and coaxial with its rotational axis; a stator disposed adjacent to the rotor to form a clearance between the rotor and the stator, and fixed to the stationary component; a first high-pressure flowpath and a second high-pressure flowpath, extending between the rotor and stator through the clearance, and a working-gas sealing area dividing the clearance into a first high-pressure section communicating with the first high-pressure flowpath, and into a second high-pressure section communicating with the second high-pressure flowpath. 1. A cryogenic refrigerator for installation on an apparatus including a stationary portion and a rotating portion axially rotatably supported by the stationary portion , the refrigerator comprising:a compressor installed on the stationary portion;an expander installed on the rotating portion; and ["a rotor fixed to the rotating portion and coaxial with the rotating portion's rotational axis,", 'a stator disposed adjacent to the rotor to form a clearance between the rotor and the stator, and fixed to the stationary portion,', 'a first high-pressure flowpath, being a flowpath for a first high-pressure working gas having a first high pressure that is higher than ambient pressure of the cryogenic refrigerator, and extending from the stator through the clearance to the rotor,', 'a second high-pressure flowpath, being a flowpath for a second high-pressure working gas having a second high pressure that is higher than ambient pressure and is lower than the first high pressure, and extending from the rotor through the clearance to the stator, and', 'a working-gas sealing area dividing the clearance into a first high-pressure section communicating with the first high- ...

Air Freight Temperature Controlled Device Using Liquid Nitrogen

Systems and methods are disclosed for transporting products with an airplane by controlling temperature in a payload bay using cryogenic coolant and a heat exchanger to cool the payload bay and heat from a heater; recycling exhaust from the heat exchanger to power a Stirling engine; charging a storage device with power from the Stirling engine; housing the payload bay as part of a modular, stackable module in an aircraft bay for transportation; and venting exhaust gas to an exterior of the airplane. 1. An air freight unit load device (ULD) for an aircraft with a cargo bay , comprising: one or more cryogenic tanks;', 'a heat exchanger coupled to the one or more cryogenic tanks;', 'a Stirling engine having a cold sink coupled to the one or more cryogenic tanks;', 'a payload bay, isolated from the cargo environment, with a double wall and Vacuum Insulated Panels (VIPs) placed between the walls;', 'one or more valves coupling the one or more cryogenic tanks, the heat exchanger, and the Stirling engine; and, 'an enclosure with'}a controller coupled to the one or more valves and one or more sensors to maintain temperature of the payload at a predetermined temperature setpoint,wherein the enclosure fits predetermined dimensions in the aircraft cargo bay, and wherein the cryogenic tank is adjacent is above an angled extension from a first wall and wherein the heat exchanger and Stirling engine are adjacent a second wall across from the first wall.2. The device of claim 1 , wherein the one or more cryogenic tanks store liquid nitrogen and the controller maintains the predetermined temperature setpoint.3. The device of wherein the controller receives temperature from a thermal sensor claim 1 , compares the temperature to the predetermined temperature setpoint claim 1 , and controls a Proportional Integral Derivative (PID) module to maintain a payload bay temperature.5. The device of comprising an electric heating element powered by deep cycle batteries.6. The device of ...

RARE EARTH OXYSULFIDE-BASED COLD STORAGE MATERIAL

Provided is a cold storage material having a large thermal capacity in a ultra-low temperature range of 10 K or less and being highly durable against thermal shock and mechanical vibration. The cold storage material contains a rare earth oxysulfide ceramic represented by the general formula ROS (wherein R is one or more kinds of rare earth elements selected from La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y), and AlOhaving a specific surface area of 0.3 m/g to 11 m/g is added to the cold storage material. 1. A rare earth oxysulfide-based cold storage material comprising a rare earth oxysulfide ceramic represented by the general formula: R2O2S , wherein R is one or more rare earth elements selected from the group consisting of La , Ce , Pr , Nd , Sm , Eu , Gd , Tb , Dy , Ho , Er , Tm , Yb , Lu , and Y , and , wherein the rare earth oxysulfide-based cold storage material further comprises Al2O3 added thereto in an amount of 3 to 12% by weight in terms of aluminum.23-. (canceled)4. The rare earth oxysulfide-based cold storage material of claim 1 , wherein the AlOhas a specific surface area of 0.3 m/g to 11 m/g.5. A regenerator filled with the rare earth oxysulfide-based cold storage material of .6. A regenerator filled with the rare earth oxysulfide-based cold storage material of . The present invention relates to a cold storage material containing a rare earth oxysulfide ceramic represented by the general formula ROS (wherein R is one or more kinds of rare earth elements selected from La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y), and in particular, relates to a cold storage material which is resistant to wearing even in prolonged operation of a refrigerator.Liquid helium is indispensable for cooling a superconducting magnet, a sensor, etc., and liquefying helium gas requires a huge work of compression by cooling with a large refrigerator. However, it is difficult to install a large refrigerator in a small device using ...

Regenerative refrigerator

A regenerator of a regenerative refrigerator includes: a magnetic regenerator material used for cold storage; and a container that accommodates the magnetic regenerator material. A part of the container that accommodates the magnetic regenerator material includes: a first region that includes a temperature range in which a specific heat of the magnetic regenerator material reaches maximum during an operation of the regenerative refrigerator, and a second region that is in a temperature range different from that of the first region. A cross sectional area of a part of the first region that accommodates the magnetic regenerator material is smaller than a cross sectional area of a part of the second region that accommodates the magnetic regenerator material.

Cold header for cryogenic refrigerating machine

A cold head for cryogenic machines comprises a displacer mounted in a working chamber of a housing. The cold head also has a high-pressure connection for supplying highly compressed refrigerant and a low-pressure connection for discharging expanded refrigerant. Also provided is a control valve arrangement for controlling the supply and discharge of refrigerant. According to the invention there is a bypass channel connecting the high-pressure connection to the low-pressure connection.

HIGH TEMPERATURE SUPERCONDUCTOR REFRIGERATION SYSTEM

A cryogenic refrigeration system and a corresponding method for increasing the cooling efficiency of the system, preferably the cooling of a thermally coupled load. Accordingly, the system comprises a supply means for providing a supply flow of a cryogenic refrigerant, a compressor fluidly coupled to said supply means and configured to compress the supplied cryogenic refrigerant, and a cold box fluidly coupled to the compressor, said cold box comprising a first expansion device and a first heat exchanger, wherein the first expansion device is configured to receive the compressed cryogenic refrigerant from the compressor and expand it and provide the expanded refrigerant to the first heat exchanger, and wherein the first heat exchanger is configured to be thermally coupled to a load. The system furthermore comprises a second heat exchanger arranged in the cold box comprising at least a first and second heat exchanging section.

METHOD FOR HEAT TRANSFER IN THE EMBEDDED STRUCTURE OF A HEAT REGENERATOR AND THE DESIGN THEREOF

The subject of this invention is a method of heat transfer in the embedded structure of a heat regenerator and the design thereof. It regards the related heat regenerators, which operate on the principle of the described method and enable a reduction of the pressure drop due to the fluid flow through the heat regenerator and consequently an increase of the power density. The concept of the operation of the heat regenerator by this invention, in which for the oscillation of the flow of the primary (first) fluid (P), electromechanical elements are applied. In the housing () between the elements () for the oscillation of the primary (first) fluid (P), there are positioned a primary hot heat exchanger (PT) and a primary cold heat exchanger (PH). In the direction of the arrow (A) the unidirectional flow of the secondary (second) fluid (S) flows from the heat sink into the primary cold heat exchanger (PH). In the direction of the arrow (B) the unidirectional flow of the secondary (second) fluid (S) exits from the primary cold heat exchanger (PH) and flows towards the heat source. Meanwhile, in the direction of the arrow (C), the unidirectional flow of the secondary (second) fluid S enters the primary hot heat exchanger (PT) and exits in the direction of the arrow (D) as the unidirectional flow of the secondary (second) fluid S of the primary hot heat exchanger (PT) towards the heat sink. Between both primary heat exchangers, (PT) and (PH), the porous regenerative material is positioned, which is part of the regenerator , with the hydraulically separated segments.

RARE-EARTH REGENERATOR MATERIAL PARTICLES, AND GROUP OF RARE-EARTH REGENERATOR MATERIAL PARTICLES, REFRIGERATOR AND MEASURING APPARATUS USING THE SAME, AND METHOD FOR MANUFACTURING THE SAME

Provided is a group of rare-earth regenerator material particles having an average particle size of 0.01 to 3 mm, wherein the proportion of particles having a ratio of a long diameter to a short diameter of 2 or less is 90% or more by number, and the proportion of particles having a depressed portion having a length of 1/10 to ½ of a circumferential length on a particle surface is 30% or more by number. By forming the depressed portion on the surface of the regenerator material particles, it is possible to increase permeability of an operating medium gas and a contact surface area with the operating medium gas. 117-. (canceled)18. A method of manufacturing a refrigerator for accumulating an extremely low temperature cold , comprising the steps of:providing a vacuum chamber;providing an external cylinder so as to be disposed in the vacuum chamber, the external cylinder enclosing an inner space;providing at least one regenerator container for accumulating cold which is arranged at the inner space inside of the external cylinder;installing a seal ring between the external cylinder and the regenerator container;forming an expanding chamber between the external cylinder and the regenerator container;combining a compressor for compressing a cooling medium gas; andpacking a group of regenerator material particles in the regenerator container;wherein the group of regenerator material particles have an average particle size of 0.01 to 3 mm,wherein a proportion of particles having a ratio of a long diameter to a short diameter of 2 or less is 90% or more by number, a proportion of particles having a depressed portion having a length of 1/10 to ½ of a particle circumferential length of a particle on a particle surface is 30% or more by number and wherein the depressed portion has depth of 1/10 or less of a particle diameter.19. The method of manufacturing a refrigerator for accumulating an extremely low temperature cold claim 18 , according to claim 18 ,wherein two or more ...

REFRIGERATION CYCLE DEVICE AND THREE-WAY FLOW RATE CONTROL VALVE

Disclosed herein are a refrigeration cycle device and three-way flow rate control valve. In a refrigeration cycle device including a compressor, first and second coolers configured to cool first and second storage compartments at least, respectively, and a mixer configured to mix refrigerants that have passed through the first and second coolers, a refrigerant flow path is switched so that refrigerants of first and second flow rates are circulated to the first and second coolers, respectively, while the first and second storage compartments are being cooled, and a refrigerant flow path is switched so that a refrigerant of a specific flow rate, which is smaller than a first flow rate but is not zero, is circulated to the first cooler after cooling of the first storage compartment is completed. 1. A refrigerator comprising:a compressor configured to circulate a refrigerant;a first cooler configured to cool at least a first storage compartment with the refrigerant circulated by the compressor;a second cooler configured to cool at least a second storage compartment with the refrigerant circulated by the compressor; mix a refrigerant that has passed through the first cooler and a refrigerant that has passed through the second cooler, and', 'supply the mixed refrigerant to the compressor; and, 'a mixer configured toa switcher configured to switch a refrigerant flow path to control a refrigerant flow rate of the first cooler and the second cooler when cooling the first storage compartment or the second storage compartment.2. The refrigerator of claim 1 , wherein the mixer is an ejector configured to:set the refrigerant that has passed through the first cooler as a driving flow,set the refrigerant that has passed through the second cooler as a suction flow, andmix the driving flow and the suction flow, andsupply the mixed flow to the compressor.3. The refrigerator of claim 1 , further comprising:a first heat exchanger configured to perform a heat exchange between (i) a high ...

REFRIGERATION DEVICE AND METHOD

Refrigeration device intended to extract heat from at least one member by heat exchange with a working fluid circulating in the working circuit comprising in series: a fluid compression mechanism a fluid cooling mechanism, preferably isobaric or substantially isobaric, a fluid expansion mechanism, and a fluid heating mechanism, in which device the compression mechanism is of the centrifugal compression type and consists of two compression stages arranged in series in the circuit, the device comprising two respective electric drive motors driving the two compression stages, the expansion mechanism consisting of a turbine coupled to the motor of one of the compression stages, the turbine of the expansion mechanism being coupled to the drive motor of the first compression stage. 114-. (canceled)15. A device for low-temperature refrigeration between −100° C. and −273° C. comprising a working circuit containing a working fluid , the device being intended to extract heat from at least one component by heat exchange with the working fluid circulating in the working circuit , the working circuit comprising in series: a mechanism for compression of the fluid , preferably isentropic or substantially isentropic , a mechanism for cooling the fluid , preferably isobaric or substantially isobaric , a mechanism for expansion of the fluid , preferably isentropic or substantially isentropic and a mechanism for heating the fluid , preferably isobaric or substantially isobaric , in which the compression mechanism is of the type with centrifugal compression and consists of two compression stages , a first compression stage and a second compression stage respectively , arranged in series in the circuit , that is , the device has only two compressors each constituting one of the two compression stages , the device comprising only two electric drive motors of the two compression stages respectively , the expansion mechanism consisting of a turbine coupled to the motor of one of the ...

HEAT REGENERATING MATERIAL PARTICLE, REGENERATOR, REFRIGERATOR, SUPERCONDUCTING MAGNET, NUCLEAR MAGNETIC RESONANCE IMAGING DEVICE, NUCLEAR MAGNETIC RESONANCE DEVICE, CRYOPUMP, AND SINGLE-CRYSTAL PULLING DEVICE OF MAGNETIC-FIELD APPLICATION TYPE

A heat regenerating material particle of an embodiment contains a heat regenerating substance having a maximum value of specific heat at a temperature of 20 K or less is 0.3 J/cm·K or more, and one metal element selected from the group consisting of calcium (Ca), magnesium (Mg), beryllium (Be), strontium (Sr), aluminum (Al), iron (Fe), copper (Cu), nickel (Ni), and cobalt (Co). The heat regenerating material particle includes a first region and a second region, the second region is closer to an outer edge of the heat regenerating material particle than the first region, and the second region has a higher concentration of the metal element than the first region. 1. A heat regenerating material particle comprising:{'sup': '3', 'a heat regenerating substance having a maximum value of specific heat at a temperature of 20 K or less is 0.3 J/cm·K or more; and'}one metal element selected from the group consisting of calcium (Ca), magnesium (Mg), beryllium (Be), strontium (Sr), aluminum (Al), iron (Fe), copper (Cu), nickel (Ni), and cobalt (Co),wherein the heat regenerating material particle includes a first region and a second region, the second region is closer to an outer edge of the heat regenerating material particle than the first region, and the second region has a higher concentration of the metal element than the first region.2. The heat regenerating material particle according to claim 1 , wherein the first region and the second region contain the heat regenerating substance.3. The heat regenerating material particle according to claim 1 , wherein the second region surrounds the first region.4. The heat regenerating material particle according to claim 1 , wherein a concentration of the metal element in the second region is 0.1 atom % or more.5. The heat regenerating material particle according to claim 1 , wherein a concentration of the metal element in the second region is 1.03 times or more a concentration of the metal element in the first region.6. The heat ...

RARE-EARTH REGENERATOR MATERIAL PARTICLES, AND GROUP OF RARE-EARTH REGENERATOR MATERIAL PARTICLES, REFRIGERATOR AND MEASURING APPARATUS USING THE SAME, AND METHOD FOR MANUFACTURING THE SAME

Provided is a group of rare-earth regenerator material particles having an average particle size of 0.01 to 3 mm, wherein the proportion of particles having a ratio of a long diameter to a short diameter of 2 or less is 90% or more by number, and the proportion of particles having a depressed portion having a length of 1/10 to ½ of a circumferential length on a particle surface is 30% or more by number. By forming the depressed portion on the surface of the regenerator material particles, it is possible to increase permeability of an operating medium gas and a contact surface area with the operating medium gas. 117-. (canceled)18. A method of manufacturing a Gifford MacMahon type (GM) refrigerator for accumulating an extremely low temperature cold , comprising:providing a vacuum chamber;providing an external cylinder so as to be disposed in the vacuum chamber, the external cylinder enclosing an inner space;providing at least one regenerator container for accumulating cold which is arranged at the inner space inside of the external cylinder;installing a seal ring between the external cylinder and the regenerator container;forming an expanding chamber between the external cylinder and the regenerator container;combining a compressor for compressing a cooling medium gas; andpacking a group of regenerator material particles in the regenerator container;wherein the group of regenerator material particles have an average particle size of 0.045 to 3 mm,wherein a proportion of particles having a ratio of a long diameter to a short diameter of 2 or less is 90% or more by number, a proportion of particles having a depressed portion having a length of 1/10 to ½ of a particle circumferential length of a particle on a particle surface is 30% or more by number and wherein the depressed portion has depth of 1/10 or less of a particle diameter.19. The method according to claim 18 , wherein two or more stages of regenerator material-filled zones are formed through a mesh material in ...

HEAT STATION FOR COOLING A CIRCULATING CRYOGEN

A heat station for a GM or Stirling cycle expander provides a versatile, efficient, and cost effective means of transferring heat from a remote load at cryogenic temperatures that is cooled by a circulating cryogen to the gas in a GM or Stirling cycle expander as it flows between a regenerator and a displaced volume. The heat exchanger comprises a shell that has external and internal fins thermally connected to it that are aligned parallel to the axis of the shell and enclosed in a housing having an inlet port and an outlet port on the bottom of the housing. 1. A cryogenic expander operating on the GM or Stirling cycle cooling a circulating cryogen comprising;a cylinder having a mounting flange at the warm end,a displacer, in said cylinder, reciprocating between a warm end and a cold end, the motion creating a cold displaced volume,a regenerator through which a first gas flows in and out of the cold displaced volume,a first heat exchanger between the regenerator and the displaced volume that transfers heat radially through a cylindrical shell from a second circulating gas in a second heat exchanger, external to said shell, to the first gas, said second heat exchanger enclosed in a housing having inlet and outlet ports for said second gas,said housing having a top plenum space above, and a bottom plenum space below said second heat exchanger, andsaid inlet and outlet ports, which direct all of said second circulating gas to flow through said second heat exchanger, are on the bottom of the housing.2. A cryogenic expander in accordance with claim 1 , in which said ports are arranged such that a condensable gas returns through the inlet port and a liquid leaves through the outlet port.3. A cryogenic expander in accordance with claim 2 , in which the expander can be oriented between cold end down and horizontal.4. A cryogenic expander in accordance with claim 2 , in which a liquid pump circulates the circulating cryogen.5. A cryogenic expander in accordance with claim 2 ...

RARE-EARTH REGENERATOR MATERIAL PARTICLES, AND GROUP OF RARE-EARTH REGENERATOR MATERIAL PARTICLES, REFRIGERATOR AND MEASURING APPARATUS USING THE SAME, AND METHOD FOR MANUFACTURING THE SAME

Provided is a group of rare-earth regenerator material particles having an average particle size of 0.01 to 3 mm, wherein the proportion of particles having a ratio of a long diameter to a short diameter of 2 or less is 90% or more by number, and the proportion of particles having a depressed portion having a length of 1/10 to ½ of a circumferential length on a particle surface is 30% or more by number. By forming the depressed portion on the surface of the regenerator material particles, it is possible to increase permeability of an operating medium gas and a contact surface area with the operating medium gas. 117-. (canceled)18. A Gifford MacMahon type (GM) refrigerator regenerator for accumulating an extremely low temperature cold , comprising:a vacuum chamber;an external cylinder provided so as to be disposed in the vacuum chamber, the external cylinder enclosing an inner space;at least one regenerator container for accumulating cold which is arranged at the inner space inside the external cylinder;a seal ring installed between the external cylinder and the regenerator container; a compressor for compressing a cooling medium gas; and', 'a group of regenerator material particles packed in the regenerator container;', 'wherein the group of regenerator material particles have an average particle size of 0.045 to 3 mm,, 'an expanding chamber formed between the external cylinder and the regenerator containerwherein a proportion of particles having a ratio of a long diameter to a short diameter of 2 or less is 90% or more by number, a proportion of particles having a depressed portion having a length of 1/10 to ½ of a particle circumferential length of a particle on a particle surface is 30% or more by number and wherein the depressed portion has a depth of 1/10 or less of a particle diameter.19. The GM regenerator for accumulating an extremely low temperature cold according to claim 18 ,wherein two or more stages of regenerator material-filled zones are formed ...

REFRIGERATION SYSTEM INCLUDING MICRO COMPRESSOR-EXPANDER THERMAL UNITS

An active gas regenerative refrigerator includes a plurality of compressor-expander units, each having a hermetic cylinder with a drive piston configured to be driven reciprocally therein, and a quantity of working fluid in each end of the cylinder. A piston seal in a central portion of the cylinder prevents passage of the working fluid between ends of the cylinder. Movement of the piston to a first extreme results in radial compression of one of the quantities of working fluid in a cylindrical gap formed between one end of the piston and an inner surface of the cylinder, while the other quantity is expanded in the opposite end of the cylinder. The piston includes a plurality of magnets arranged in pairs, with magnets of each pair positioned with like-poles facing each other. A piston drive is configured to couple with transverse magnetic flux regions formed by the magnets. 1. An active gas regenerative refrigerator , comprising: a main cylinder having first and second cylinder ends and a central cylinder region between the first and second cylinder ends;', 'a first quantity of working fluid positioned in the first cylinder end;', 'a second quantity of working fluid positioned in the second cylinder end;', 'a drive piston positioned inside the main cylinder and having first and second piston ends and a central piston region, the first piston end having a diameter that is less than an inside diameter of the first cylinder end such that when the drive piston is moved to a first extreme, the first mass of working fluid is compressed into a first radial gap formed between a radial surface of the first piston end and an inner radial face of the first cylinder end, the second piston end having a diameter that is less than an inside diameter of the second cylinder end such that when the drive piston is moved to a second extreme, the second mass of working fluid is compressed into a second radial gap formed between a radial surface of the second piston end and an inner ...

RARE EARTH REGENERATOR MATERIAL, AND REGENERATOR AND REFRIGERATOR EACH PROVIDED WITH SAME

The present invention provides a regenerator material having a high specific heat in a temperature range of 10K or higher (in particular, a temperature range of 10 to 20K), as well as a regenerator and a refrigerator provided with the regenerator material. Specifically, the present invention provides a regenerator material represented by general formula (1): ErRNi (1), wherein x is 0 Подробнее

HEAT STATION FOR COOLING A CIRCULATING CRYOGEN

A heat station for a GM or Stirling cycle expander provides a versatile, efficient, and cost effective means of transferring heat from a remote load at cryogenic temperatures that is cooled by a circulating cryogen to the gas in a GM or Stirling cycle expander as it flows between a regenerator and a displaced volume. The heat exchanger comprises a shell that has external and internal fins thermally connected to it that are aligned parallel to the axis of the shell and enclosed in a housing having an inlet port and an outlet port on the bottom of the housing. 1. A cryogenic expander operating on the GM or Stirling cycle cooling a circulating cryogen comprising;a displacer, in a cylinder, reciprocating between a warm end and a cold end, the motion creating a cold displaced volume,a regenerator through which a first gas flows in and out of the cold displaced volume,a first heat exchanger between the regenerator and the displaced volume that transfers heat radially through a cylindrical shell from a second gas that condenses in a second heat exchanger, external to said shell, to the first gas,said second heat exchanger enclosed in a housing having a single port for said second gas, andsaid port is on the bottom of the housing.2. A cryogenic expander in accordance with claim 1 , in which said port drains liquid from said housing when the axis of the expander is horizontal. This invention relates to improving the configuration of a heat station that transfers heat from a circulating cryogen cooling an external load to the reciprocating flow of gas internal to the cold end of a high capacity expander operating on the GM or Stirling cycle, producing refrigeration at cryogenic temperatures.GM and Stirling cycle refrigerators produce refrigeration at cryogenic temperatures in an expander by flowing gas at a high pressure through a regenerator type heat exchanger to the cold end of a piston reciprocating in a cylinder as the displaced volume is increasing, then lowering the ...

REGENERATIVE REFRIGERATOR

A disclosed regenerative refrigerator including a regenerator filled with a regenerative material for accumulating cooling of a refrigerant gas, wherein the regenerator is divided into a central region and a peripheral region on a cross-sectional face of the regenerator, and a specific heat of the central region is larger than a specific heat of the peripheral region. 1. A regenerative refrigerator comprising:a regenerator filled with a regenerative material for accumulating cooling of a refrigerant gas,wherein the regenerator is divided into a central region and a peripheral region on a cross-sectional face of the regenerator,wherein a specific heat of the central region is larger than a specific heat of the peripheral region, andwherein the central region and the peripheral region are divided by a separating member.2. The regenerative refrigerator according to claim 1 ,wherein a flow path resistance for the refrigerant gas in the central region is less than a flow path resistance for the refrigerant gas in the peripheral region.3. The regenerative refrigerator according to claim 1 ,wherein a magnetic regenerative material made of a magnetic material is provided in the central region, anda nonmagnetic regenerative material made of a nonmagnetic material is provided in the peripheral region.4. The regenerative refrigerator according to claim 1 ,wherein the separating member allows the refrigerant gas to pass through and prevents the regenerative material from passing through the separating member.5. The regenerative refrigerator according to claim 1 ,wherein a ratio between cross-sectional areas of the central and peripheral regions is about 50% to about 95%.6. The regenerative refrigerator according to claim 1 ,wherein the regenerator <17, 26> in the central region is formed by vertically arranging an upper portion and a lower portion positioned on a lower side of the upper portion, and{'sub': 2', '2', '2, 'wherein the upper portion is made of HoCu, and the lower ...

Regenerator For A Cryo-Cooler That Uses Helium As A Working Gas

A regenerator of a cryo-cooler uses helium both as a working gas and as a heat storage material. The regenerator includes cells whose exterior sides form flow channels through which the working gas flows. Each cell has connected first and second cavities enclosed by a heat-conductive cell wall. The cavities contain helium that is used to store heat. Each cells is shaped as a disk. The working gas flows both through the flow channels and around the regenerator so as to exchange heat with the helium in the cavities via the heat conducting cell wall. Each cell has a pressure-equalizing opening through the cell wall whose diameter is smaller than the thickness of the cell wall. The diameter of the pressure-equalizing opening is dimensioned to permit the pressure of the helium contained in the cell to change by a maximum of 20% during any working cycle of the cryo-cooler.

Discharge conduit connection for a compressor

A compressor includes a discharge conduit that extends between a discharge valve and a hermetic shell within the hermetic shell. A sealing connection assembly includes a housing mounted to one of the discharge valve and the hermetic shell. An inner surface of the housing has a tapered portion that contracts to a sealing edge. An end portion of the discharge conduit is positioned within the passage of the housing such that an outer surface of the discharge conduit is positioned on and contacts the inner surface of the housing at the sealing edge.

Cryocooler

A cryocooler includes: a housing furnished with a housing bottom surface; a displacer furnished with a displacer upper surface between the housing bottom surface and which an upper gas chamber is formed, and being enabled to reciprocate axially with respect to the housing; a housing gas flow path formed in the housing and opening onto the upper gas chamber; a displacer upper gas flow path formed in the displacer and opening onto the upper gas chamber; and a gas-guiding flow channel formed in at least either the housing bottom surface or the displacer upper surface constituting a portion of the upper gas chamber, and interconnecting the housing gas flow path and the displacer upper gas flow path when the displacer is positioned at top-dead center in its axial reciprocation.

CRYOCOOLER

A cryocooler includes: a housing internally defining a low-pressure gas chamber; a valve stator defining a variable pressure zone and a high-pressure zone between the housing and the valve stator; a valve rotor, a first seal member disposed adjacent to the high-pressure zone to seal the high-pressure zone and encompassing a first surface area; a second seal member disposed adjacent to the variable pressure zone to seal the variable pressure zone, and encompassing a second surface area that is larger than the first surface area; and a third seal member disposed adjacent to the variable pressure zone to seal the variable pressure zone, and encompassing a third surface area that is larger than the second surface area. 1. A cryocooler , comprising:a housing internally defining a low-pressure gas chamber;a valve stator fixed to the housing in the low-pressure gas chamber, and defining a variable pressure zone and a high-pressure zone between the housing and the valve stator;a valve rotor supported on the housing such as to be rotatable, around a valve rotational axis, with respect to the valve stator in the low-pressure gas chamber, and configured to interconnect the high-pressure zone with the variable pressure zone during a portion of a single cycle of rotation of the valve rotor, and to interconnect the low-pressure gas chamber with the variable pressure zone in another portion of the single cycle;a first seal member extending lengthwise around the valve rotational axis between the housing and the valve stator, being disposed adjacent to the high-pressure zone to seal the high-pressure zone, and encompassing a first surface area;a second seal member extending lengthwise around the valve rotational axis between the housing and the valve stator, being disposed adjacent to the variable pressure zone to seal the variable pressure zone, and encompassing a second surface area that is larger than the first surface area; anda third seal member extending lengthwise around the ...

AIR CONDITIONER AND METHOD FOR CONTROLLING THE SAME

An air conditioner and a method for controlling the same are disclosed. The air conditioner implements a multistage expansion scheme by implementing serial connection between electronic expansion valves including in the R410A refrigerant-based air conditioner, and thus guarantees an optimum compression ratio in all cooling/heating load regions. Therefore, although cycle characteristics are changed by changing R410A refrigerant to R32 refrigerant, the air conditioner optimizes the cycle simply by controlling a degree of opening of electronic expansion valves, respectively. As described above, since the cycle optimization is implemented using the multistage expansion scheme in which legacy electronic expansion valves are coupled in series, the design modification is minimized without design modification of requisite constituent elements such as a heat exchanger, system implementation is facilitated, resulting in high efficiency in cost and productivity. Cooling/heating performance improvement and reliability guarantee are achieved under all load conditions, resulting in increased system efficiency. 1. An air conditioner comprising:a compressor configured to compress a refrigerant;a flow passage switching valve configured to switch flow of the refrigerant according to at least one of a cooling mode and a heating mode, respectively; anda multistage expansion device configured to decompress the refrigerant, 'the multistage expansion device includes a first expansion valve to decompress a pressure of the refrigerant when the refrigerant is a high-pressure refrigerant and a second expansion valve to decompress the pressure of the refrigerant when the refrigerant is a medium-pressure refrigerant.', 'wherein the compressor is a rotary compressor using the refrigerant as an operating fluid, and'}2. The air conditioner according to claim 1 , wherein the refrigerant is R32 refrigerant claim 1 , andthe first expansion valve and the second expansion valve are connected in series ...

COLD HEAD, SUPERCONDUCTING MAGNET, EXAMINATION APPARATUS, AND CRYOPUMP

A reduction in a permeability of refrigerant gas is suppressed while increasing a filling factor of regenerator material particles with respect to a stage of a cold head. A cold head includes a stage including regenerator material particle groups, and a metal mesh material partitioning the regenerator material particle groups. The metal mesh material has quadrangular mesh holes each having a length of a long side of 1/10 or more and ½ or less of each of average particle sizes of the regenerator material particle groups. 115.-. (canceled)16. A method for manufacturing a cold head , comprising:preparing a regenerator container;filling a first regenerator material particle group having an average particle size in a range from 200 μm to 380 μm in the regenerator container;filling a plurality of metal mesh materials on the first regenerator material particle group in the regenerator container; andfilling a second regenerator material particle group having an average particle size in a range from 200 μm to 380 μm on the plurality of metal mesh materials in the regenerator container so that the second regenerator material particle group is partitioned with the first regenerator material particle group by the plurality of metal mesh materials,wherein each of the plurality of metal mesh materials has quadrangular mesh holes each having a length of a long side in a range from 1/10 to ½ of each of the average particle sizes of the first and second regenerator material particle groups,wherein each of the plurality of metal mesh materials has metal wires woven in a mesh form, and each of the metal wires has a wire diameter in a range from 20 μm to 90 μm,wherein the plurality of metal mesh materials are stacked so that positions of the mesh holes in the plurality of the metal mesh materials do not match, andwherein a length of one side of each of the mesh holes in one of the plurality of metal mesh materials is different from a length of one side of each of the mesh holes in ...

Cryocooler with Magnetic Reciprocating Piston

A cryocooler is described that can include a pressure wave generator, and a refrigeration device (for example, a cold-head), which can be used to liquefy a gas when the gas is exposed to a surface of the refrigeration device. The pressure wave generator can include one or more motors. Each motor can include a stator, and at least one electrical coil wound around a portion of the stator. The electrical coil can generate a reversing magnetic field when alternating electric current is passed through the electrical coil. The motor can further include a pressurized container that can be placed within the space enclosed by the stator, and a piston that can be placed inside the pressurized container. The stators can be placed external to the pressurized container. The piston is made by combining magnets that have opposite and transverse polarities, and are combined adjacently on a common reciprocating axis. 1. A pressure wave generator for an acoustic load comprising:a. a stator including a pair of magnetic pole faces defining a space therebetween;b. a pressure cylinder received within the space defined between the magnetic pole faces of the stator;c. an electrical coil wound around a portion of the stator external to the pressure cylinder and configured to receive an alternating electrical current such that electromagnetic fields of alternating directions are formed between the pair of magnetic pole faces;d. a piston configured to slide linearly within the pressure cylinder, said piston including a first permanent magnet portion and a second permanent magnet portion, said first and second permanent magnet portions being transversely oriented so as to assert opposite magnetic fields and configured so that the piston reciprocates within the pressure cylinder as an alternating electrical current is applied to the electrical coil;e. said pressure cylinder including a sealed first end and containing a gas between the sealed first end and the piston so that a gas spring is ...

ROTATING MACHINE HAVING MAGNETICALLY ACTUATED PISTONS

A rotating machine is disclosed and includes a stator defining a circumference, a plurality of first magnet arrays, a rotor, and a first piston. The first magnet arrays are comprised of a plurality of discrete magnets arranged around the circumference of the stator in a first magnetic pattern. The rotor is rotatable about an axis of rotation and defines a main body. The main body defines a first passageway. The first piston includes a plurality of first magnetic elements and is actuated within the first passageway of the rotor. The plurality of discrete magnets are arranged in the first magnetic pattern and are positioned to interact with the magnetic elements of the first piston to create a first magnetic force as the rotor rotates about the axis of rotation. The first magnetic force represents a first amount of force required to actuate the first piston. 110. A rotating machine () , comprising:{'b': 18', '148, 'a stator () defining a circumference ();'}{'b': 67', '67', '68', '68', '160', '162', '148', '18, 'a plurality of first magnet arrays (A, B, A, B) comprised of a plurality of first discrete magnets (, ) arranged around the circumference () of the stator () in a first magnetic pattern;'}{'b': 20', '36', '36', '32, 'a rotor () rotatable about an axis of rotation and defining a main body (), wherein the main body () defines a first passageway (); and'}{'b': 26', '150', '152', '26', '32', '20', '160', '162', '150', '152', '26', '20', '26', '32', '20, 'a first piston () including a plurality of first magnetic elements (, ), the first piston () actuated within the first passageway () of the rotor (), wherein the plurality of first discrete magnets (, ) are arranged in the first magnetic pattern and are positioned to interact with the first magnetic elements (, ) of the first piston () to create a first magnetic force as the rotor () rotates about the axis of rotation, the first magnetic force representing a first amount of force required to actuate the first ...

Regenerator for stirling cycle refrigerating machine

FIELD: gas regenerative Stirling cycle refrigerating machines. SUBSTANCE: during operation of refrigerating machine, working gas flows through tubes 6 fixed in plates 4 and 5 giving up heat or absorbing heat from rare-earth material 7 placed in vacuum or shield medium. EFFECT: enhanced efficiency. 1 dwg 95906140с ПЧ Го (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ” 2 079 066 ' ОМК" | 25 В 9/00 13) СЛ 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 94017773/06, 17.05.1994 (46) Дата публикации: 10.05.1997 (56) Ссылки: 1. Липицкий В.Л., Крупин А.В., Опара В.К., Ракоч А.Г. Безокислительный нагрев редких металлов и сплавов в вакууме. - М.: Металлургия, 1385, с. 3. 2. Заявка Франции М 2638823, кл. Е 25 В 9/00, 1976. 3. Даниличев В.Н., Ефимов С.И., Звонов В.А., Круглов Н.Г., Шувалов А.Г. Двигатели Стирлинга. - М.: Машиностроение, 1977, с. 111. (71) Заявитель: Шпырин Григорий Васильевич, Кириллов Николай Геннадьевич (72) Изобретатель: Шпырин Григорий Васильевич, Кириллов Николай Геннадьевич (73) Патентообладатель: Шпырин Григорий Васильевич, Кириллов Николай Геннадьевич С1 (54) РЕГЕНЕРАТОР ДЛЯ ХОЛОДИЛЬНОЙ МАШИНЫ, РАБОТАЮЩЕЙ ПО ЦИКЛУ СТИРЛИНГА (57) Реферат: Область использования: в области газовых регенеративных машин, работающих по циклу Стирлинга. Сущность изобретения: при работе холодильной машины, рабочий газ, проходя через трубки 6, фиксируемые в решетках 4, 5, периодически отдает или принимает тепло от частиц редкоземельного материала 7, помещенных в вакуум или защитную среду. 1 ил. ЗОВЕТИ 2079066 КО 95906140с ПЧ ГЭ КУЗЗАМ АСЕМСУ ГОК РАТЕМТ$ АМО ТКАОЕМАКК$ (19) 13) ВИ "” 2079 066 ' (51) 11. С1.6 Е 25 В 9/00 СЛ 12) АВЗТКАСТ ОЕ 1МУЕМТОМ (21), (22) АррИсаНоп: 94017773/06, 17.05.1994 (71) АррисапЕ (46) Бае ог рибИсаНоп: 10.05.1997 эИпругп Спаог Маз!'емсв, КиШоу МКо!а] беппад'емсп (72) |пуетог: Зиругп Спаог] Маз!'емсв, КиШоу Мко![а] беппаа'емсп (73) Ргорпеюг: Эпругпт Спаог| Маз!'е\мсп, КиШоу Мко![а] беппаа'емсп (54) КЕСЕМЕКАТОК РОК ...

Rotary valve

Linear compressor

본 발명은 선형압축기에 구비된 적층철심의 형상과 선형압축기의 조립구조를 변경하여 선형압축기를 박형구조로 만들고, 선형압축기의 조립을 간단화시켜 대량 생산이 용이한 선형압축기에 관한 것으로, 본 발명에 따른 선형압축기는, 실린더 내에서 직선 왕복 운동하는 피스톤의 작동에 의하여 냉매를 압축시키기 위하여, 적층철심과 코일로 이루어진 고정자와, 상기 고정자에 대면하되 설치된 영구자석 및 백요크와, 일단이 상기 피스톤에 접착 고정되고, 타단이 상기 영구자석에 접착 고정되어 상기 영구자석을 지지하는 서포터와, 상기 고정자, 영구자석, 백요크, 서포터를 지지 보호하는 프레임을 포함하는 선형압축기에 있어서, 상기 고정자가 상기 프레임의 내측부에 압입고정되고, 상기 백요크가 상기 프레임의 외측부에 압입고정되고, 상기 고정지와 상기 백요크 사이에 상기 영구자석이 설치되되 상기 영구자석을 지지하는 상기 서포터가 대체로 일자형태(｜)를 갖는 것을 특징으로 한다. 이러한 특징적 구성에 따라서, 압축기 특성의 신뢰성이 향상되며 동시에 압축기구조의 박형화가 가능해진다. The present invention relates to a linear compressor having a thin linear structure by changing the shape of the laminated iron core provided in the linear compressor and the assembly structure of the linear compressor, and simplifying the assembly of the linear compressor. The linear compressor according to the present invention, in order to compress the refrigerant by the operation of the piston reciprocating linearly in the cylinder, a stator consisting of a laminated iron core and a coil, a permanent magnet and a back yoke installed facing the stator, one end of the piston In the linear compressor comprising a supporter fixed to the support, the other end is adhesively fixed to the permanent magnet to support the permanent magnet, and the stator, the permanent magnet, the back yoke, the frame supporting the protector, wherein the stator is the Press-fit to the inside of the frame, the back yoke is press-fit to the outside of the frame, Characterized by having a | between the paper and the back yoke the supporter is generally dated form for supporting the permanent magnet, the permanent magnet is doedoe installation (). According to this characteristic configuration, the reliability of the compressor characteristics is improved, and at the same time, the compressor structure can be thinned.

High temperature generator for an absorption refrigerator

본 고안은 고온 재생기 내에 용액입자의 상승을 억제하는 그물 철망 형태의 여과체(demister)를 설치하여 증기속에 용액입자가 포함되어 증발되는 현상을 방지함으로서, 냉동능력의 저하를 막을 수 있는 흡수식 냉동기의 고온 재생기에 관한 것으로, 액냉매관을 통해서 고온 열교환기로부터 유입된 희용액을 가열하는 상부의 고온 재생기와, 액냉매관을 통해서 고온 재생기로부터 유입된 희용액이 수증기로 증발되어 응축되는 응축기가 내장된 저온 재생기와, 액냉매관을 통해서 저온 재생기로부터 유입된 응축수가 증발되는 증발기 및 흡수제에 의해서 증발된 냉매 증기를 흡수하는 흡수기를 포함하는 본 고안의 흡수식 냉동기에 있어서, 상기 고온 재생기(2)의 증기 박스(50)내에는 그물 철망 형태의 여과체(60)가 설치되어 있는 구조를 지닌다. The present invention is to install a demister in the form of a mesh wire mesh to suppress the rise of the solution particles in the high temperature regenerator to prevent the phenomenon of evaporation containing the solution particles in the vapor, thereby preventing the deterioration of the freezing capacity of the absorption chiller A high temperature regenerator comprising a high temperature regenerator for heating a rare solution introduced from a high temperature heat exchanger through a liquid refrigerant pipe, and a condenser in which a rare solution introduced from the high temperature regenerator through a liquid refrigerant pipe is evaporated into water vapor and condensed. In the absorption chiller of the present invention comprising a low temperature regenerator, and an absorber for absorbing the refrigerant vapor evaporated by the absorbent and the evaporator in which the condensed water introduced from the low temperature regenerator through the liquid refrigerant pipe evaporates, the high temperature regenerator (2) of the The steam box 50 has a structure in which the filter medium 60 in the form of a mesh wire mesh is installed.

Transportable cryogenic device for generating low temperatures in a closed cycle

선형 압축기

본 발명은 선형 압축기에 관한 것으로, 그 목적은 운전효율을 향상시키는 것이다. 본 발명에 따른 선형압축기는, 밀폐용기(22), 밀폐용기(22)의 내부에 서로 대향되어 마련된 제1실린더(10a)와 제2실린더(10b), 제1실린더(10a)와 제2실린더(10b)의 내부를 왕복운동하도록 마련되되 서로 상반되게 냉매를 흡입, 압축, 토출시키는 제1피스톤(19A)과 제2피스톤(19b), 제1피스톤(19a)과 제2피스톤(19b)을 왕복운동 시키는 리니어 모터(30)를 포함하여 구성된다.

Stirling engine

Cooling apparatus of liquid refrigerator absorptive airconditioner

본 고안은 흡수식 냉,난방기에 관한 것으로 특히 흡수기에서 유입되는 희용액과 고온재생기에서 발생된 과열증기를 이용하여 용액을 재생시키는 저온재생기와, 상기 저온재생기에서 발생된 냉매증기를 응축하여 액냉매를 만들고 이 액냉매를 증발기로 보내는 응축기와, 상기 저온재생기에서 응축기로 가는 액냉매관에 열교환기를 설치하여 증발기의 포화 증기압을 낮춤으로서 냉매 증발이 원활하도록 한 흡수식 냉난방기의 액냉매 냉각장치이다. The present invention relates to an absorption type cooling and heating unit, and a low temperature regenerator for regenerating a solution by using a rare solution introduced from an absorber and a superheated steam generated in a high temperature regenerator, and a refrigerant refrigerant condensed in the low temperature regenerator. The liquid refrigerant cooling system of the absorption type air conditioner which makes the refrigerant evaporate smoothly by lowering the saturated vapor pressure of the evaporator by installing the heat exchanger in the condenser which sends this liquid refrigerant to the evaporator, and the liquid refrigerant pipe from the low temperature regenerator to the condenser.

리니어 압축기의 제어장치 및 그를 포함하는 냉장고

본 발명의 실시 예에 따른 리니어 압축기의 제어장치는, 리니어 압축기의 동작 상태를 검출하는 검출부, 상기 검출된 동작 상태에 기초하여, 상기 리니어 압축기에 포함된 리니어 모터의 압축 행정 주파수와 흡입 행정 주파수를 각각 설정하는 제어부, 및 상기 제어부에 의해 설정된 상기 압축 행정 주파수와 상기 흡입 행정 주파수에 따라 상기 리니어 모터가 구동되기 위한 구동신호를 생성하여 상기 리니어 압축기로 출력하는 구동신호 생성부를 포함한다.

Spring support structure of linear compressor

본 발명은 리니어 압축기의 스프링지지구조에 관한 것으로, 종래에는 피스톤이 결합된 스프링을 지지하는 스프링홀더가 주물로 제작되고 또한 나사산공 및 접촉면을 가공해야 함으로 제작이 복잡하고 정확한 조립이 어려워 조립생산성을 저하시키는 단점이 있었는 바, 본 발명은 원통형 케이스의 일측에 캡이 삽입되어 복개되고, 상기 삽입된 캡의 단부에 스프링의 일측면이 지지되게 결합되며, 원통형 스프링홀더가 케이스에 삽입되어 스프링의 타측면을 지지하도록 결합됨에 의해 스프링이 지지되도록 함으로써 조립작업이 용이함과 더불어 조립공차가 적고 다량생산이 가능하여 생산성을 높이고 신뢰성을 향상시킬 수 있도록 한 것이다. The present invention relates to a spring support structure of a linear compressor, and in the related art, a spring holder for supporting a spring coupled with a piston is made of a casting, and a thread hole and a contact surface must be processed. In the present invention, the cap is inserted into one side of the cylindrical case and the cover is closed, and one side of the spring is coupled to the end of the inserted cap so as to be supported, and the cylindrical spring holder is inserted into the case so that the other The spring is supported by being coupled to support the side to facilitate the assembly work, the assembly tolerance is small and the mass production is possible to increase the productivity and improve the reliability.

Compressor

Linear compressor

본 고안은 리니어 압축기에 관한 것으로, 본 고안에 따른 리니어 압축기는 그 내부를 직선왕복운동하는 피스톤(52)이 삽설된 실린더(53)와 실린더(53)의 외주연에 마련된 고정자(57), 그리고 이 고정자(57)를 상하에서 지지하는 상부프레임과 하부프레임을 구비하고, 이 실린더(53)의 결합에 따라 고정자(57)의 결합위치가 결정될 수 있도록 실린더(53)와 상부프레임이 일체로 마련된 것이다. The present invention relates to a linear compressor, the linear compressor according to the present invention is a cylinder 53 and a stator 57 provided on the outer periphery of the cylinder 53, the piston 52 is inserted into the linear reciprocating motion therein, and The upper frame and the lower frame for supporting the stator (57) up and down, and the cylinder 53 and the upper frame are integrally provided so that the coupling position of the stator (57) can be determined according to the coupling of the cylinder (53) will be. 이와 같은 본 고안에 따른 리니어 압축기는 실린더와 고정자의 위치를 잡아주며 지지하는 보어부가 일체로 마련되어 있기 때문에 실린더의 결합만으로 고정자와 피스톤 그리고 자석의 동심도 및 직각도를 양호하게 유지할 수 있게 된다. 이에 따라 구동부의 에어갭을 보다 효율적으로 유지할 수 있어 압축기의 효율향상에 이바지 할 수 있는 효과가 있다. Since the linear compressor according to the present invention is provided with a bore portion for holding and supporting the position of the cylinder and the stator, it is possible to maintain the concentricity and the squareness of the stator, the piston, and the magnet by simply coupling the cylinders. Accordingly, the air gap of the driving unit can be more efficiently maintained, thereby contributing to the improvement of the efficiency of the compressor.

low temperature generator and a absoption system including the same

본 발명은 저온재생기 및 이를 포함하는 흡수식 시스템에 관한 것이다. 보다 구체적으로는 배관 구성을 단순화할 수 있고 사용이 편리한 저온재생기 및 이를 포함하는 흡수식 시스템에 관한 것이다. 본 발명의 실시예에 따르면, 복수 개의 열원을 통하여 흡수액에서 냉매를 순차적으로 재생시키는 재생기; 상기 재생기를 통해서 재생된 냉매 증기를 응축시키는 응축기; 그리고 내부에 상기 재생기와 응축기를 구비하는 단일 쉘을 포함하여 이루어지고, 상기 응축기는 상기 쉘 내에서 상기 재생기의 상부에 위치됨을 특징으로 하는 흡수식 시스템의 저온재생기를 제공할 수 있다.

Cold-storage material, method for making cold-storage material and refrigerator using cold-storage material

本发明提供具有高强度、微粉化可能性小、耐热冲击性和耐久性优良并可发挥低温区域显著制冷能力的蓄冷材料、蓄冷材料制造方法及使用该蓄冷材料的蓄冷式制冷机，蓄冷材料由以氧化物为主体的许多磁性粒子组成，构成该磁性粒子的结晶粒子的等效圆直径的平均值为0.3-20μm，等效圆直径超过50μm的结晶粒子面积比例以10%以下为宜。

Regenerator for stirling cooling machine

Изобретение относится к газовым регенеративным машинам, работающим по циклу Стирлинга. Достигаемый технический результат - обеспечение стабильной высокой теплоемкости насадки, холодопроизводительности холодильной машины в процессе всего периода эксплуатации за счет предотвращения окисления и газонасыщения частиц редкоземельных материалов, применяемых в качестве насадки регенератора, и уменьшение аэродинамического сопротивления при проходе рабочего газа через регенератор. При работе холодильной машины рабочий газ, проходя через трубки, фиксируемые в решетках, периодически отдает или принимает тепло от частиц редкоземельного материала, помещенных в вакуум или защитную среду.

Absorption type chiller

본 발명은 보조 사이클을 구비하지 않는 저온수 2단 흡수식 냉동기에 관한 것으로, 냉매가 증발되는 증발기, 증기 냉매를 흡수제에 흡수시켜 희용액을 생성하는 흡수기, 흡수기에서 생성된 희용액에서 냉매를 재생시켜 중용액을 생성하는 제1 재생기, 제1 재생기에서 생성된 중용액에서 냉매를 재생시켜 농용액을 생성하는 제2 재생기, 및 제1 재생기에서 재생된 냉매를 응축시키는 응축기를 포함하고, 증발기와 흡수기와 제2 재생기는 동일한 쉘에 설치될 수 있다.

Low-temperature regenerator for absorption-type water heating/cooling unit

본 발명은 흡수식 냉동기의 저온재생기에 관한 것으로써, 저농도 흡수액인 리튬브로마이드 용액을 넣어, 가스 버너에 의해 가열되는 가열실을 가지고, 저농도 흡수액 중의 냉매를 기화증발시켜 고온의 냉매증기를 냉매증기관으로 보내어 중농도 흡수액을 분리시키는 고온재생기 내 기화 냉매의 응축열을 이용하여 중농도 흡수액을 가열하고, 중농도 흡수액에 포함된 냉매를 기화시켜 고농도 흡수액으로 하는 흡수식 냉동기의 저온재생기에 있어서, 상기 냉매증기관은, 증기관의 상면은 냉매증기격막을 기점으로 가로 배열된 중공-구비 수평격판과 이 수평격판의 상부를 둘러싸는 크기의 돔형상의 튐방지격판이 탑재되고, 증기관의 외주면은 상기 수평격판과 연통 가능한 입구를 갖는 헬리컬 형상의 전열관으로 둘러싸이도록 구성함으로써, 전열효율의 극대화를 도모할 수 있도록 하였다.

Gas Compression Expansion Device

압축 피스톤측에 있어서의 구동력의 마모 손실을 저감시킴으로써, 크랭크 기구부의 경량화 및 구동력의 효율의 향상을 도모하는 데 있다. By reducing the wear loss of the driving force on the compression piston side, it is possible to reduce the weight of the crank mechanism portion and improve the efficiency of the driving force. T자 형상으로 배치된 제1 팽창 실린더(1)와 제1 디스플레이서(5)와, 제1 커넥팅 레버(17)와 제1 압축 실린더(21)와 제1 압축 피스톤(23)을 구비하고, 마찬가지로 T자 형상으로 배치된 제2 팽창 실린더(2)와 제2 디스플레이서(6)와, 제2 커넥팅 레버(18)와 제2 압축 실린더(22)와 제2 압축 피스톤(24)을 구비하고, 제1 팽창실(3)과 제1 압축실(31)과 제3 압축실(33)이 제1 연통관(29)에 의해 연통되고, 제2 팽창실(4)과 제2 압축실(32)과 제4 압축실(34)이 제2 연통관(30)에 의해 연통되고 있다. A first expansion cylinder (1) and a first displacer (5) arranged in a T shape, a first connecting lever (17), a first compression cylinder (21), and a first compression piston (23); Similarly, it has a second expansion cylinder 2 and a second displacer 6 arranged in a T-shape, a second connecting lever 18, a second compression cylinder 22, and a second compression piston 24. And the first expansion chamber 3, the first compression chamber 31, and the third compression chamber 33 communicate with each other by the first communication tube 29, and the second expansion chamber 4 and the second compression chamber 32. ) And the fourth compression chamber 34 communicate with each other by the second communication tube 30.

Regenerator of absorption type refrigerator

본 고안에 따른 재생기는 연소실(1)과 내부에 LiBr수용액이 흐르는 용액관군(4)이 직렬로 연결되어 있으며, 그 위로 관내에 연소가스가 지나가는 연관군(21)으로 된 2층의 가열구조로 되어 있어, 기존의 연소실과 용액관군의 구조를 가지는 재생기에 추가 연관군을 설치함으로써 연소가스의 열을 충분히 회수할 수 있으므로, 연료소비를 줄일 수 있는 효과가 있다.

Refrigeration system of recycling wasted heat type

The present invention relates to an absorption freezing system including an evaporator, an absorber, a regenerator and a condenser. The absorption freezing system includes: an evaporator for storing water therein and evaporating the water; an absorber communicating with the evaporator and carrying an absorbing liquid therein to absorb water vapor generated from the evaporator so that the inside of the evaporator is in a low-temperature vacuum state; a regenerator connected to the absorber and receiving the absorbing liquid having absorbed the water vapor to regenerate the absorbing liquid by heating the absorbing liquid so that the regenerated absorbing liquid is discharged to the absorber; and a condenser connected to the regenerator and the evaporator, receiving water vapor generated in the absorbing liquid heated by the regenerator, and condensing the received water vapor into water by heat-exchanging the received water vapor with cooling water so that the condensed water is discharged to the evaporator, wherein the regenerator includes a waste heat recovery manifold for circulating a phase change fluid therein; a waste heat storage tank connected to the waste heat recovery manifold to store the phase change fluid; a waste heat recycle manifold connected to the waste heat storage tank so that the stored phase change fluid flows and the absorbing liquid in the regenerator and the phase change fluid are heat exchanged with each other, and wherein the phase change fluid partially absorbs waste heat generated when the regenerator is heated to regenerate the absorbing liquid, the phase change fluid having absorbed the waste heat is stored in the waste heat storage tank, and the absorbing liquid inside the regenerator is preheated using the waste heat recycle manifold when the generator is re-heated, so that energy consumption required for heating is reduced.