Abstract: The present invention provides a non-PGM catalyst for burning carbon soot without using a noble metal, the non-PGM catalyst comprising: a cerium-praseodymium complex oxide and an iron oxide, the cerium-praseodymium complex oxide impregnated with silver (Ag). The cerium-praseodymium complex oxide illustratively consists of 60 to 95 wt % of cerium oxide and 5 to 40 wt % of praseodymium oxide, and silver (Ag) impregnated in the complex oxide is 1.5 to 3.0 parts by weight of the total weight of the complex oxide. The iron oxide may be an oxide in a form of particles separate from the cerium-praseodymium complex oxide in which silver is impregnated, and may be 0.5 to 2 parts by weight of the total weight of the cerium praseodymium complex oxide.

Abstract: A cooling apparatus includes a compressor; a condenser for condensing a refrigerant discharged from the compressor, an expansion valve to expand the refrigerant discharged from the condenser, and an evaporator to evaporate the refrigerant discharged from the expansion valve and to deliver the refrigerant to the compressor. The compressor includes a rotary compressor having a displacement volume less than about 3 cc, and refrigerant circulating inside the cooling apparatus includes at least one of R290, R600a, R123a, R1234yf, and R1234ze. The cooling apparatus and compressor attain miniaturization and high efficiency.

Abstract: A compressor and an air conditioner including the same having an improved structure capable of decreasing a discharge temperature of the compressor. The compressor which compresses and discharges refrigerant includes a casing defining an external appearance thereof, at least one cylinder including an inner space, a rolling piston which eccentrically turns in the inner space, a vane which radially abuts the rolling piston and divides the inner space into a suction chamber and a compression chamber, and a vane chamber recessed outward of the inner space such that the vane advances and retreats, a plurality of plates disposed above and below the at least one cylinder so as to define the inner space, an injection line provided in one of the at least one cylinder and the plural plates, and a check valve installed on the injection line.

Abstract: An air conditioning apparatus including a compressor, an outdoor heat exchanger, an indoor heat exchanger, and an expansion valve to depressurize a refrigerant. The refrigerant is formed of hydro fluorocarbon (HFC). The compressor includes a compression unit to compress the refrigerant, a motor unit to provide rotational power to the compression unit, and an oil accommodation portion to store oil to reduce friction between the rotating shaft and the compression unit and lower a temperature of the compressor, and the oil contains a carbon nanoparticle. Even when an HFC-based refrigerant producing high discharge temperature in a compressor is used, deterioration of the compressor due to the high temperature is prevented. In addition, by lowering the operational temperature of the compressor, the reliability and performance of the compressor using the HFC-based refrigerant and the air conditioning apparatus using the same may be enhanced.

Abstract: The present invention provides a non-PGM catalyst for burning carbon soot without using a noble metal, the non-PGM catalyst comprising: a cerium-praseodymium complex oxide and an iron oxide, the cerium-praseodymium complex oxide impregnated with silver (Ag). The cerium-praseodymium complex oxide illustratively consists of 60 to 95 wt % of cerium oxide and 5 to 40 wt % of praseodymium oxide, and silver (Ag) impregnated in the complex oxide is 1.5 to 3.0 parts by weight of the total weight of the complex oxide. The iron oxide may be an oxide in a form of particles separate from the cerium-praseodymium complex oxide in which silver is impregnated, and may be 0.5 to 2 parts by weight of the total weight of the cerium praseodymium complex oxide.

Abstract: A rotary compressor, the capacity of which is variable with a simplified configuration, and an air conditioning system having the rotary compressor. The rotary compressor is used in an air conditioning system including a condenser, a compressor, an evaporator, and an expansion valve, and includes a housing, a compressing chamber defined in the housing, and a vane to be moved forward or rearward in a radial direction of the compressing chamber. The vane is moved forward or rearward depending on an opening rate of the expansion valve.

Abstract: A rotary compressor including a case defining an external appearance of the compressor. A compressing device is arranged inside the case, and a lower cap is fixed to a lower end of the case. The rotary compressor further includes a weld zone to fix the compressing device and lower cap to each other.

Abstract: A rotary compressor including a cylinder to form a compression chamber, and including a vane slot including a vane guide part recessed outward from an inner surface of the compression chamber and an extended part having a width wider than the width of the vane guide part by a predetermined extension width in an outer end area of the vane guide part, a roller to eccentrically rotate in the compression chamber and to compress a medium, a vane reciprocatingly accommodated in the vane slot, and contacted to an outer surface of the roller to divide the compression chamber, and a filling member accommodated in a space of the extension width in the extended part.

Abstract: A rotary compressor includes a cylinder to form a first compressing chamber and a second compressing chamber partitioned from each other and including a first vane slot and a second vane slot which are formed in the first compressing chamber and the second compressing chamber, respectively, and a first roller and a second roller to respectively rotate in the first compressing chamber and the second compressing chamber to compress compressing media, the rotary compressor operating in a full load running mode in which a load running is concurrently performed in the first compressing chamber and the second compressing chamber, and in a partial load running mode in which a load running is performed in only the second compressing chamber, the rotary compressor further including a first vane which is controllably accommodated in the first vane slot, a vane driving part to enable the first vane to contact and be distanced apart from an outer surface of the first roller to perform a load running and a no-load running

Abstract: A rotary compressor including a cylinder to form a compression chamber, and including a vane slot including a vane guide part recessed outward from an inner surface of the compression chamber and an extended part having a width wider than the width of the vane guide part by a predetermined extension width in an outer end area of the vane guide part, a roller to eccentrically rotate in the compression chamber and to compress a medium, a vane reciprocatingly accommodated in the vane slot, and contacted to an outer surface of the roller to divide the compression chamber, and a filling member accommodated in a space of the extension width in the extended part.

Abstract: A rotary compressor includes a cylinder main body to define an inner space, a vane coupled to the cylinder main body to extend into and out of the inner space, the cylinder main body including a vane room formed at a side of the cylinder main body to guide entrance and exit of the vane, an opening part to extend from the vane room toward an outer surface of the cylinder main body, and a valve accommodating part to extend from the opening part, and having a sectional area larger than the opening part, and a vane room valve seated in the valve accommodating part to open and close the opening part according to pressure of the vane room.

Abstract: A variable capacity rotary compressor includes a housing having a compressing chamber, a roller to rotate in the compressing chamber while coming into contact with an inner peripheral surface of the compressing chamber, a vane to move forward and rearward along a guiding groove in accordance with rotation of the roller, the guiding groove being formed in the housing in a radial direction of the compressing chamber, a vane control device to regulate restriction and release of the vane as to whether or not the vane comes into continuous contact with an outer peripheral surface of the roller, and a controller to output a control signal to the vane control device for the variation of a compression capacity, so as to regulate a proportion of restriction and release of the vane, and a capacity variation method using the variable capacity rotary compressor.

Abstract: A variable capacity rotary compressor has a simplified structure to reduce manufacturing costs and assembling time thereof and is capable of easily and conveniently performing a capacity-changing operation.

Abstract: A variable capacity rotary compressor with upper and lower compression chambers having different capacities, the upper and lower compression chambers being partitioned from each other, and a rotary shaft extending through the upper and lower compression chambers. The rotary shaft includes a fixing hole and a latch pin which includes a head part is fixed to the rotary shaft through the fixing hole. The head part of the latch pin can be forcibly fit into a forcible fitting hole of the fixing hole. The head part is spaced apart from the inner circumference of the forcible fitting hole in the axial direction of the rotary shaft when the head part is forcibly fitted in the forcible fitting hole, so that a forcible fitting force is not applied in the axial direction of the rotary shaft.

Abstract: An expandable merchandising bag having an expansion section that permits a manufacturer to ship a product in the bag with the bag in a collapsed, smaller state, and a user to enlarge the bag via the expansion section to an expanded state. The expandable merchandising bag in the expanded state provides more ample room for receiving the product after used, thus providing the consumer with a reusable storage bag.