Class / Patent application number | Description | Number of patent applications / Date published |
236092000 | With pressure control | 13 |
20140097260 | Thermal Protection System For Pressurized Gas Cylinders In Vehicles - Disclosed is a thermal protection system for a pressurized gas cylinder. The system includes a pressurized gas cylinder | 04-10-2014 |
20090045264 | Thermostatic expansion valve - A thermostatic expansion valve includes a valve body having an evaporator inlet port, an evaporator outlet port, a suction line port, and a liquid line port. A sensor chamber formed within the valve body is disposed between the evaporator outlet port and the suction line port. A valve is disposed within the valve body controls a flow of refrigerant from the liquid line port to the evaporator inlet port. A diaphragm separates a charge chamber and a pressure chamber where a pressure differential between a charge chamber and a pressure chamber controls the positioning of the valve. A restriction flow passage located to provide fluid communication between the sensor chamber and the pressure chamber is configured to limit a flow rate from the pressure chamber to sensor chamber, thereby slowing the opening of the valve resulting in a reduction of noise generated following an initial startup of a compressor. | 02-19-2009 |
20100163637 | Expansion valve and method of producing the same - An expansion valve to expand high-pressure refrigerant and send the expanded refrigerant toward an evaporator is used in a refrigeration cycle, and includes a body portion, an element portion, and a valve portion. The body portion has a first passage through which the high-pressure refrigerant passes, a throttle passage located in the first passage so as to expand refrigerant, and a second passage through which refrigerant flowing out of the evaporator passes. The element portion arranged outside of the body portion has a pressure responding member to be displaced in accordance with a difference between an inner pressure of a seal space and a pressure of refrigerant flowing through the second passage. Temperature sensing media is filled in the seal space, and a pressure of the media is changed by temperature. The valve portion is displaced in accordance with the pressure responding member so as to control an opening of the throttle passage. Additive is filled in the seal space with the media so as to lower a condensing temperature of the media. | 07-01-2010 |
20100320278 | EXPANSION VALVE - A thermal expansion valve for a refrigeration system comprises a working element with a diaphragm clamped between a cover plate and a cover ring. The diaphragm is a multiple-diaphragm comprising two or more individual diaphragms. This makes the multiple-diaphragm more flexible than a single diaphragms and increases the lifetime of the diaphragm. The individual diaphragms are separated by an anti-friction layer to protect against tear, the anti-friction layer can be grease or oil placed between the individual diaphragms or it can be a layer of coating on the diaphragms. | 12-23-2010 |
20110155816 | Air Conditioner - An air conditioner includes a plurality of compressors, an intake passageway, a bypass unit, and an expansion valve. The intake passageway distributes a fluid to each of the compressors. The bypass unit includes a plurality of bypass pipes connected respectively to the compressors and a common bypass pipe to discharge the fluids from the compressors to the intake passageway. The expansion valve is provided to the bypass unit to control a flow of fluid from the common bypass pipe to the intake unit. | 06-30-2011 |
20110155817 | EXPANSION VALVE - An expansion valve assembly is provided comprising a distributor body ( | 06-30-2011 |
20110259968 | METHOD OF FORMING THROTTLE PASSAGE, EXPANSION VALVE WITH THROTTLE PASSAGE, AND PIPE WITH THROTTLE PASSAGE - A throttle passage is formed by providing a step portion by expanding an open end side of a refrigerant passage of the refrigeration cycle, placing a throttle passage member on the step portion, and squashing the throttle passage member using a columnar squashing jig to widen a rim of the outer periphery, thereby causing the throttle passage member to be fixedly engaged to an inner wall of the refrigerant passage. The throttle passage member has a simple shape formed only by machining a circular plate having a hole formed in a center thereof into a truncated conical shape, and therefore can be made at low cost. Throttle passage member is only squashed to be fixedly engaged in the refrigerant passage, and therefore can be easily formed. | 10-27-2011 |
20120187202 | EXPANSION VALVE DEVICE - An expansion valve device includes an electric driver having a stepping motor so as to control an opening degree of a refrigerant passage by displacing a valve member in accordance with a rotation angle of the stepping motor. A controller drives the stepping motor in a micro step when a flow rate of refrigerant flowing through the refrigerant passage is equal to or less than a predetermined value, and drives the stepping motor in a full step when the flow rate of the refrigerant is larger than the predetermined value. | 07-26-2012 |
20120199661 | VEHICLE AIR CONDITIONER - Provided is a vehicle air conditioner which includes a simple water-proofing structure that is capable of preventing flooding of a vehicle cabin from mating surfaces, etc. of expansion-valve covers and top and bottom divided cases of an air conditioning unit (HVAC unit) without employing a water-proofing cover, or the like. In a vehicle air conditioner in which expansion-valve covers that are vertically divided into two parts are provided at an outer surface side of top and bottom divided cases of an air conditioning unit disposed in the vehicle cabin so as to bridge mating surfaces of the cases; an expansion valve can be disposed inside the expansion-valve covers; and, in addition, the interior of the expansion-valve covers communicates with an engine compartment via an opening provided in an toe board. | 08-09-2012 |
20120234931 | EXPANSION VALVE - An expansion valve is configured such that a shaft, a first valve, a second valve, a compression coil spring, and an adjustment screw are coaxially arranged within a body exactly below a power element, and the first valve and the second valve control the flow rate in an interlocked manner. A second valve seat of the second valve is press-fitted into the body, and an amount of press-fitting of the second valve seat into the body is adjusted such that when the first valve is in a closed state in which a first valve element is seated on a first valve seat, the second valve is in a closed state in which a second valve element is seated on the second valve seat. | 09-20-2012 |
20130175351 | EXPANSION VALVE - An expansion valve for a refrigerant circuit of a refrigeration apparatus is configured to depressurize a liquid refrigerant. The expansion valve includes a valve main body with a valve seat opening into a valve chest formed in the valve main body and a valve body movable relative to the valve chest in a reciprocating manner. An orifice is formed in the valve seat. The orifice has an orifice entrance with a smallest diameter, an orifice middle section widening in diameter along a direction of refrigerant outflow from the orifice entrance so as to form a first taper angle, and an orifice exit either widening in diameter or not in diameter along the direction of refrigerant outflow from the orifice middle section so as to form a second taper angle smaller than the first taper angle. | 07-11-2013 |
20130206851 | EXPANSION VALVE - There is provided an expansion valve which, by moving the sub-valve in a valve housing, controls the flow rate of a refrigerant in a first flow direction and releases the refrigerant to flow in a second flow direction, wherein the sub-valve is reduced in weight and a valve port is provided with high accuracy. The sub-valve includes a guide member formed by press work and a valve seat member formed by cutting. The sub-valve is seated on a sub-valve seat of a valve seat ring when the pressure in a main valve chamber is high, and is moved away from the sub-valve seat when the pressure in the main valve chamber is low. The sub-valve is reduced in weight by forming the guide member by press work, and the valve port is formed with improved accuracy by forming the valve seat member by cutting. | 08-15-2013 |
20140353391 | Electronic Expansion Valve - An electronic expansion valve for an HVAC system and method of operating the same is provided, wherein the EEV comprises a longitudinal displacement axis, an obturator, a rotor comprising a magnet, a first sensor disposed along the longitudinal displacement axis at a first longitudinal location and configured to output a first voltage, and a second sensor disposed along the longitudinal displacement axis at a second longitudinal location and configured to output a second voltage, wherein the first longitudinal location is longitudinally displaced from the second longitudinal location along the longitudinal displacement axis, and wherein the position, direction of movement, linear speed, angular speed, and angular displacement of an obturator may be determined as a result of the first voltage output from the first sensor and second voltage output from the second sensor. | 12-04-2014 |
236092000 | Refrigeration expansion valves | 12 |
20140097260 | Thermal Protection System For Pressurized Gas Cylinders In Vehicles - Disclosed is a thermal protection system for a pressurized gas cylinder. The system includes a pressurized gas cylinder | 04-10-2014 |
20090045264 | Thermostatic expansion valve - A thermostatic expansion valve includes a valve body having an evaporator inlet port, an evaporator outlet port, a suction line port, and a liquid line port. A sensor chamber formed within the valve body is disposed between the evaporator outlet port and the suction line port. A valve is disposed within the valve body controls a flow of refrigerant from the liquid line port to the evaporator inlet port. A diaphragm separates a charge chamber and a pressure chamber where a pressure differential between a charge chamber and a pressure chamber controls the positioning of the valve. A restriction flow passage located to provide fluid communication between the sensor chamber and the pressure chamber is configured to limit a flow rate from the pressure chamber to sensor chamber, thereby slowing the opening of the valve resulting in a reduction of noise generated following an initial startup of a compressor. | 02-19-2009 |
20100163637 | Expansion valve and method of producing the same - An expansion valve to expand high-pressure refrigerant and send the expanded refrigerant toward an evaporator is used in a refrigeration cycle, and includes a body portion, an element portion, and a valve portion. The body portion has a first passage through which the high-pressure refrigerant passes, a throttle passage located in the first passage so as to expand refrigerant, and a second passage through which refrigerant flowing out of the evaporator passes. The element portion arranged outside of the body portion has a pressure responding member to be displaced in accordance with a difference between an inner pressure of a seal space and a pressure of refrigerant flowing through the second passage. Temperature sensing media is filled in the seal space, and a pressure of the media is changed by temperature. The valve portion is displaced in accordance with the pressure responding member so as to control an opening of the throttle passage. Additive is filled in the seal space with the media so as to lower a condensing temperature of the media. | 07-01-2010 |
20100320278 | EXPANSION VALVE - A thermal expansion valve for a refrigeration system comprises a working element with a diaphragm clamped between a cover plate and a cover ring. The diaphragm is a multiple-diaphragm comprising two or more individual diaphragms. This makes the multiple-diaphragm more flexible than a single diaphragms and increases the lifetime of the diaphragm. The individual diaphragms are separated by an anti-friction layer to protect against tear, the anti-friction layer can be grease or oil placed between the individual diaphragms or it can be a layer of coating on the diaphragms. | 12-23-2010 |
20110155816 | Air Conditioner - An air conditioner includes a plurality of compressors, an intake passageway, a bypass unit, and an expansion valve. The intake passageway distributes a fluid to each of the compressors. The bypass unit includes a plurality of bypass pipes connected respectively to the compressors and a common bypass pipe to discharge the fluids from the compressors to the intake passageway. The expansion valve is provided to the bypass unit to control a flow of fluid from the common bypass pipe to the intake unit. | 06-30-2011 |
20110155817 | EXPANSION VALVE - An expansion valve assembly is provided comprising a distributor body ( | 06-30-2011 |
20110259968 | METHOD OF FORMING THROTTLE PASSAGE, EXPANSION VALVE WITH THROTTLE PASSAGE, AND PIPE WITH THROTTLE PASSAGE - A throttle passage is formed by providing a step portion by expanding an open end side of a refrigerant passage of the refrigeration cycle, placing a throttle passage member on the step portion, and squashing the throttle passage member using a columnar squashing jig to widen a rim of the outer periphery, thereby causing the throttle passage member to be fixedly engaged to an inner wall of the refrigerant passage. The throttle passage member has a simple shape formed only by machining a circular plate having a hole formed in a center thereof into a truncated conical shape, and therefore can be made at low cost. Throttle passage member is only squashed to be fixedly engaged in the refrigerant passage, and therefore can be easily formed. | 10-27-2011 |
20120187202 | EXPANSION VALVE DEVICE - An expansion valve device includes an electric driver having a stepping motor so as to control an opening degree of a refrigerant passage by displacing a valve member in accordance with a rotation angle of the stepping motor. A controller drives the stepping motor in a micro step when a flow rate of refrigerant flowing through the refrigerant passage is equal to or less than a predetermined value, and drives the stepping motor in a full step when the flow rate of the refrigerant is larger than the predetermined value. | 07-26-2012 |
20120199661 | VEHICLE AIR CONDITIONER - Provided is a vehicle air conditioner which includes a simple water-proofing structure that is capable of preventing flooding of a vehicle cabin from mating surfaces, etc. of expansion-valve covers and top and bottom divided cases of an air conditioning unit (HVAC unit) without employing a water-proofing cover, or the like. In a vehicle air conditioner in which expansion-valve covers that are vertically divided into two parts are provided at an outer surface side of top and bottom divided cases of an air conditioning unit disposed in the vehicle cabin so as to bridge mating surfaces of the cases; an expansion valve can be disposed inside the expansion-valve covers; and, in addition, the interior of the expansion-valve covers communicates with an engine compartment via an opening provided in an toe board. | 08-09-2012 |
20120234931 | EXPANSION VALVE - An expansion valve is configured such that a shaft, a first valve, a second valve, a compression coil spring, and an adjustment screw are coaxially arranged within a body exactly below a power element, and the first valve and the second valve control the flow rate in an interlocked manner. A second valve seat of the second valve is press-fitted into the body, and an amount of press-fitting of the second valve seat into the body is adjusted such that when the first valve is in a closed state in which a first valve element is seated on a first valve seat, the second valve is in a closed state in which a second valve element is seated on the second valve seat. | 09-20-2012 |
20130175351 | EXPANSION VALVE - An expansion valve for a refrigerant circuit of a refrigeration apparatus is configured to depressurize a liquid refrigerant. The expansion valve includes a valve main body with a valve seat opening into a valve chest formed in the valve main body and a valve body movable relative to the valve chest in a reciprocating manner. An orifice is formed in the valve seat. The orifice has an orifice entrance with a smallest diameter, an orifice middle section widening in diameter along a direction of refrigerant outflow from the orifice entrance so as to form a first taper angle, and an orifice exit either widening in diameter or not in diameter along the direction of refrigerant outflow from the orifice middle section so as to form a second taper angle smaller than the first taper angle. | 07-11-2013 |
20130206851 | EXPANSION VALVE - There is provided an expansion valve which, by moving the sub-valve in a valve housing, controls the flow rate of a refrigerant in a first flow direction and releases the refrigerant to flow in a second flow direction, wherein the sub-valve is reduced in weight and a valve port is provided with high accuracy. The sub-valve includes a guide member formed by press work and a valve seat member formed by cutting. The sub-valve is seated on a sub-valve seat of a valve seat ring when the pressure in a main valve chamber is high, and is moved away from the sub-valve seat when the pressure in the main valve chamber is low. The sub-valve is reduced in weight by forming the guide member by press work, and the valve port is formed with improved accuracy by forming the valve seat member by cutting. | 08-15-2013 |
20140353391 | Electronic Expansion Valve - An electronic expansion valve for an HVAC system and method of operating the same is provided, wherein the EEV comprises a longitudinal displacement axis, an obturator, a rotor comprising a magnet, a first sensor disposed along the longitudinal displacement axis at a first longitudinal location and configured to output a first voltage, and a second sensor disposed along the longitudinal displacement axis at a second longitudinal location and configured to output a second voltage, wherein the first longitudinal location is longitudinally displaced from the second longitudinal location along the longitudinal displacement axis, and wherein the position, direction of movement, linear speed, angular speed, and angular displacement of an obturator may be determined as a result of the first voltage output from the first sensor and second voltage output from the second sensor. | 12-04-2014 |
236092000 | Pressure- and temperature-actuated relief valves | 1 |
20140097260 | Thermal Protection System For Pressurized Gas Cylinders In Vehicles - Disclosed is a thermal protection system for a pressurized gas cylinder. The system includes a pressurized gas cylinder | 04-10-2014 |
20090045264 | Thermostatic expansion valve - A thermostatic expansion valve includes a valve body having an evaporator inlet port, an evaporator outlet port, a suction line port, and a liquid line port. A sensor chamber formed within the valve body is disposed between the evaporator outlet port and the suction line port. A valve is disposed within the valve body controls a flow of refrigerant from the liquid line port to the evaporator inlet port. A diaphragm separates a charge chamber and a pressure chamber where a pressure differential between a charge chamber and a pressure chamber controls the positioning of the valve. A restriction flow passage located to provide fluid communication between the sensor chamber and the pressure chamber is configured to limit a flow rate from the pressure chamber to sensor chamber, thereby slowing the opening of the valve resulting in a reduction of noise generated following an initial startup of a compressor. | 02-19-2009 |
20100163637 | Expansion valve and method of producing the same - An expansion valve to expand high-pressure refrigerant and send the expanded refrigerant toward an evaporator is used in a refrigeration cycle, and includes a body portion, an element portion, and a valve portion. The body portion has a first passage through which the high-pressure refrigerant passes, a throttle passage located in the first passage so as to expand refrigerant, and a second passage through which refrigerant flowing out of the evaporator passes. The element portion arranged outside of the body portion has a pressure responding member to be displaced in accordance with a difference between an inner pressure of a seal space and a pressure of refrigerant flowing through the second passage. Temperature sensing media is filled in the seal space, and a pressure of the media is changed by temperature. The valve portion is displaced in accordance with the pressure responding member so as to control an opening of the throttle passage. Additive is filled in the seal space with the media so as to lower a condensing temperature of the media. | 07-01-2010 |
20100320278 | EXPANSION VALVE - A thermal expansion valve for a refrigeration system comprises a working element with a diaphragm clamped between a cover plate and a cover ring. The diaphragm is a multiple-diaphragm comprising two or more individual diaphragms. This makes the multiple-diaphragm more flexible than a single diaphragms and increases the lifetime of the diaphragm. The individual diaphragms are separated by an anti-friction layer to protect against tear, the anti-friction layer can be grease or oil placed between the individual diaphragms or it can be a layer of coating on the diaphragms. | 12-23-2010 |
20110155816 | Air Conditioner - An air conditioner includes a plurality of compressors, an intake passageway, a bypass unit, and an expansion valve. The intake passageway distributes a fluid to each of the compressors. The bypass unit includes a plurality of bypass pipes connected respectively to the compressors and a common bypass pipe to discharge the fluids from the compressors to the intake passageway. The expansion valve is provided to the bypass unit to control a flow of fluid from the common bypass pipe to the intake unit. | 06-30-2011 |
20110155817 | EXPANSION VALVE - An expansion valve assembly is provided comprising a distributor body ( | 06-30-2011 |
20110259968 | METHOD OF FORMING THROTTLE PASSAGE, EXPANSION VALVE WITH THROTTLE PASSAGE, AND PIPE WITH THROTTLE PASSAGE - A throttle passage is formed by providing a step portion by expanding an open end side of a refrigerant passage of the refrigeration cycle, placing a throttle passage member on the step portion, and squashing the throttle passage member using a columnar squashing jig to widen a rim of the outer periphery, thereby causing the throttle passage member to be fixedly engaged to an inner wall of the refrigerant passage. The throttle passage member has a simple shape formed only by machining a circular plate having a hole formed in a center thereof into a truncated conical shape, and therefore can be made at low cost. Throttle passage member is only squashed to be fixedly engaged in the refrigerant passage, and therefore can be easily formed. | 10-27-2011 |
20120187202 | EXPANSION VALVE DEVICE - An expansion valve device includes an electric driver having a stepping motor so as to control an opening degree of a refrigerant passage by displacing a valve member in accordance with a rotation angle of the stepping motor. A controller drives the stepping motor in a micro step when a flow rate of refrigerant flowing through the refrigerant passage is equal to or less than a predetermined value, and drives the stepping motor in a full step when the flow rate of the refrigerant is larger than the predetermined value. | 07-26-2012 |
20120199661 | VEHICLE AIR CONDITIONER - Provided is a vehicle air conditioner which includes a simple water-proofing structure that is capable of preventing flooding of a vehicle cabin from mating surfaces, etc. of expansion-valve covers and top and bottom divided cases of an air conditioning unit (HVAC unit) without employing a water-proofing cover, or the like. In a vehicle air conditioner in which expansion-valve covers that are vertically divided into two parts are provided at an outer surface side of top and bottom divided cases of an air conditioning unit disposed in the vehicle cabin so as to bridge mating surfaces of the cases; an expansion valve can be disposed inside the expansion-valve covers; and, in addition, the interior of the expansion-valve covers communicates with an engine compartment via an opening provided in an toe board. | 08-09-2012 |
20120234931 | EXPANSION VALVE - An expansion valve is configured such that a shaft, a first valve, a second valve, a compression coil spring, and an adjustment screw are coaxially arranged within a body exactly below a power element, and the first valve and the second valve control the flow rate in an interlocked manner. A second valve seat of the second valve is press-fitted into the body, and an amount of press-fitting of the second valve seat into the body is adjusted such that when the first valve is in a closed state in which a first valve element is seated on a first valve seat, the second valve is in a closed state in which a second valve element is seated on the second valve seat. | 09-20-2012 |
20130175351 | EXPANSION VALVE - An expansion valve for a refrigerant circuit of a refrigeration apparatus is configured to depressurize a liquid refrigerant. The expansion valve includes a valve main body with a valve seat opening into a valve chest formed in the valve main body and a valve body movable relative to the valve chest in a reciprocating manner. An orifice is formed in the valve seat. The orifice has an orifice entrance with a smallest diameter, an orifice middle section widening in diameter along a direction of refrigerant outflow from the orifice entrance so as to form a first taper angle, and an orifice exit either widening in diameter or not in diameter along the direction of refrigerant outflow from the orifice middle section so as to form a second taper angle smaller than the first taper angle. | 07-11-2013 |
20130206851 | EXPANSION VALVE - There is provided an expansion valve which, by moving the sub-valve in a valve housing, controls the flow rate of a refrigerant in a first flow direction and releases the refrigerant to flow in a second flow direction, wherein the sub-valve is reduced in weight and a valve port is provided with high accuracy. The sub-valve includes a guide member formed by press work and a valve seat member formed by cutting. The sub-valve is seated on a sub-valve seat of a valve seat ring when the pressure in a main valve chamber is high, and is moved away from the sub-valve seat when the pressure in the main valve chamber is low. The sub-valve is reduced in weight by forming the guide member by press work, and the valve port is formed with improved accuracy by forming the valve seat member by cutting. | 08-15-2013 |
20140353391 | Electronic Expansion Valve - An electronic expansion valve for an HVAC system and method of operating the same is provided, wherein the EEV comprises a longitudinal displacement axis, an obturator, a rotor comprising a magnet, a first sensor disposed along the longitudinal displacement axis at a first longitudinal location and configured to output a first voltage, and a second sensor disposed along the longitudinal displacement axis at a second longitudinal location and configured to output a second voltage, wherein the first longitudinal location is longitudinally displaced from the second longitudinal location along the longitudinal displacement axis, and wherein the position, direction of movement, linear speed, angular speed, and angular displacement of an obturator may be determined as a result of the first voltage output from the first sensor and second voltage output from the second sensor. | 12-04-2014 |