Abstract: The present invention relates to an air foil journal bearing including a bump foil and a top foil, in which one end and the other end of the top foil based on a circumferential direction are disposed with a step difference in a radial direction, and one end of the top foil is disposed radially inward of the other end of the top foil on the assumption that a direction in which the top foil extends from one end to the other end is identical to a rotation direction of a rotor disposed inside the top foil and configured to rotate, such that an additional fluid dynamic pressure is generated in the bearing, and asynchronous vibration components, which affect noise, are suppressed during a high-speed operation, which may improve driving stability.

Abstract: Disclosed is a heat pump system for a vehicle that includes: a compressor which compresses and discharges a refrigerant; an indoor heat exchanger which is provided in an air-conditioning case and exchanges heat with air discharged into the indoor space of the vehicle; an outdoor heat exchanger which is provided on the outer portion of the air-conditioning case and exchanges heat with external air; and a first expansion valve which expands the refrigerant, and the heat pump system carries out heating and cooling of the indoor space of the vehicle through the indoor heat exchanger while controlling the flow of the refrigerant discharged from the compressor, wherein the indoor heat exchanger is divided into a plurality of columns on an air passage in the air-conditioning case and includes a refrigerant direction switching portion which controls the flow of the refrigerant.

Abstract: A vehicle heat exchange module in which a plate-shaped manifold is applied, heat exchange components are disposed on a bracket including a bottom portion and a wall portion, and the heat exchange components are separated at front and rear sides based on the wall portion.

Abstract: The present invention relates to a heat exchanger capable of ensuring sufficient cooling performance and drainage performance even in a narrow width, and the heat exchanger includes first and second header tanks into and from which a cooling fluid is introduced and discharged, the first and second header tanks being spaced apart from each other at a predetermined distance, and a core part disposed between the first and second header tanks, having a plurality of tubes and fins, and configured to perform a movement of the cooling fluid and heat exchange of the cooling fluid, in which a predetermined space is formed in a longitudinal direction in a separation wall, which divides a flow path of the first or second header tank into a plurality of spaces in a width direction, so that condensate water is discharged.

Abstract: An electric compressor of an air conditioning system and a control method thereof. In one method, a stable operation of the electric compressor is ensured by means of logic to protect an inverter unit provided in the electric compressor before an inverter element is damaged due to overheating, so that safety can be secured.

Abstract: The present invention relates to a heat exchanger, in which a connection flange for connecting a refrigerant manifold may be provided to ensure performance in easily assembling the heat exchanger and the refrigerant manifold, and inlet and outlet pipes of the connection flange may be configured to be adjacent to each other to minimize processing and manufacturing tolerance.

Abstract: A sealing arrangement for guiding electrical connections through a wall of a housing for a device for driving a compressor. The sealing arrangement has a connection arrangement with at least one electrically conductive connection element and a holding element as well as at least one connection terminal element for receiving the at least one connection element in an axial direction. The connection terminal element is enclosed by the holding element and a sealing element, respectively. In doing so, the holding element for receiving the connection terminal element is formed from an electrically non-conductive material.

Abstract: A heat exchanger includes a pipe connection structure including a first coupling element and a second coupling element. The first coupling element includes a through-hole formed therethrough and the second coupling element includes a blind hole formed therein. A manifold tank includes a first tank compartment in alignment with the through-hole of the first coupling element and a second tank compartment in alignment with the blind hole of the second coupling element. The through-hole provides fluid communication between an interior of the pipe connection structure and the first tank compartment while the second coupling element forms a fluid barrier wall at an end of the blind hole thereof that prevents fluid communication between the interior of the pipe connection structure and the second tank compartment by way of the second coupling element.

Abstract: A vehicular heat management system configured to adjust the amount of refrigerant distributed to an outdoor heat exchanger and a chiller depending an air conditioning conditions in a heat pump mode is disclosed, which allows reduction of unnecessary refrigerant flow path resistance and pressure loss due to distribution of refrigerant to an unnecessary part and resultant decrease in heat pump performance by limiting the distribution of the refrigerant to an unnecessary part among the outdoor heat exchanger and the chiller depending on the conditions. The system includes: a heat pump type refrigerant circulation line including a compressor, a high pressure side heat exchanger, and an outdoor heat exchanger and a chiller connected in parallel to each other; and a refrigerant distribution amount control part configured to control an amount of refrigerant distributed to the outdoor heat exchanger and the chiller according to air conditioning conditions in a heat pump mode.

Abstract: A thermal management system for a vehicle is disclosed. The system includes a compressor, a condenser, a refrigerant branch part, a first refrigerant line branching off from the refrigerant branch part toward one side, provided with a first expansion valve and a first heat exchanger, and configured to allow a refrigerant to circulate therethrough, a second refrigerant line branching off from the refrigerant branch part toward the other side, provided with a second expansion valve and a second heat exchanger, and configured to allow a refrigerant to circulate therethrough, an internal heat exchanger configured to allow the refrigerant, which passes through the condenser and moves to the refrigerant branch part, and the refrigerant, which passes through the first heat exchanger or the second heat exchanger and moves to the compressor, to exchange heat with each other, and a bypass line connected to allow refrigerant to bypass the internal heat exchanger.

Abstract: Disclosed in the present invention is a vehicle heat pump system capable of improving dehumidification performance by increasing the flow of a refrigerant toward an evaporator during heating and dehumidifying modes. The vehicle heat pump system comprises: a bypass line which branches off between a first expansion valve and an outdoor heat exchanger and bypasses through the outdoor heat exchanger and the evaporator; a first refrigerant flow control valve for adjusting the opening degree between the bypass line and a refrigerant line toward the outdoor heat exchanger; a dehumidification line branching off between the first expansion valve and the first refrigerant flow control valve to supply the refrigerant to the evaporator; and a control unit for controlling the amount of refrigerant supplied to the dehumidification line according to outdoor air temperature or compressor RPM.

Abstract: An electric compressor including a housing, a compression unit disposed within the housing, a motor unit housed within the housing, and an inverter unit coupled to one side of the housing to control the motor unit, wherein the inverter unit includes an inverter body coupled to one side of the housing, an inverter cover attached to a facing side of the inverter body, and a sealing member integrally formed on one side and the other side of the inverter body, wherein the electric compressor forms the sealing member simultaneously with the formation of the inverter body, eliminating the need for workers to install gaskets for sealing, thereby improving assembly between the housing and the inverter unit while maintaining sealing stability.

Abstract: An electric compressor including: a compression mechanism that receives power from a motor and compresses refrigerant; and an inverter that controls the motor. The housing receiving the motor and the inverter includes a partition wall that divides a motor receiving space and an inverter receiving space, and a suction port that introduces refrigerant from the outside to the motor receiving space. At least one internal flow path is formed between an inner circumferential surface of the housing and an outer circumferential surface of the motor. The internal flow path and the suction port are formed on opposite sides of each other with respect to a first plane, that is, an imaginary plane which includes a central axis of the housing and is perpendicular to the ground.

Abstract: An accumulator and heat exchanger assembly includes a heat exchanger having first flow passages and second flow passages formed therein, the first flow passages configured to convey a first flow of a fluid therethrough and the second flow passages configured to convey a second fluid flow therethrough with the first flow and the second fluid flow fluidly separated from one another within the heat exchanger. An accumulator includes a can and a cap removably coupled to the can. An interior of the can is configured to convey the second fluid flow therethrough to separate a liquid portion thereof from a vapor portion thereof and/or to remove moisture therefrom. The heat exchanger is coupled to the cap and is removable from the can therewith such that removal of the cap and the heat exchanger from the can provides access to the interior of the can.

Abstract: A modular pod for performing a brazing process includes a housing defining an interior thereof, a vacuum device in selective fluid communication with the interior of the housing with the vacuum device configured to selectively form a vacuum within the interior of the housing, a first energy source disposed external to the interior of the housing, and a first energy access feature provided through the housing. The first energy access feature forms a pathway for transferring energy from the first energy source to the interior of the housing for heating a workpiece disposed therein in accordance with the brazing process. A heat conductive gas is selectively fluidly communicated to the interior of the housing following formation of the vacuum therein with the heat conductive gas aiding in transferring heat energy to the workpiece during the brazing process.

Abstract: A vehicle air conditioner includes: an air-conditioning case, an evaporator located inside the air-conditioning case, a heater unit located at a rear end of the evaporator, a case rear portion located at a rear end of the heater unit and configured to guide air that has passed through the heater unit, first inlets located facing the case rear portion, rear seat duct units respectively located at opposite sides of the air-conditioning case, the rear seat duct units being fluidly connected to the respective first inlets, and rear seat door units configured to selectively open and close the respective rear seat duct units. The rear seat duct units respectively include bent portions each configured to change a flow direction of the air such that the air introduced from the case rear portion flows toward a front end of the air-conditioning case.

Abstract: A varnish impregnation device including: a lower housing in which a stator is seated in an internal space thereof, the stator including a stator core which has a plurality of teeth protruding inward or outward and has a slot that is a space between the teeth. A coil winding passes through the slot and is wound around the teeth. A second cover member is coupled to an upper outer portion of the stator core. The lower housing has a plurality of varnish supply holes which is formed to pass up and down through a lower surface thereof, and the plurality of varnish supply holes communicates with the slot.

Abstract: The present invention relates to a pipe connection assembly of a heat exchanger for connecting a header tank and a pipe of the heat exchanger, in which a means for preventing a welding ring that fixes a manifold and a pipe from entering into a hollow at one end of the manifold before welding is disposed, and a space is formed between the inner surface of the one end of the manifold and the outer surface of the pipe, thereby preventing the molten welding ring from flowing out.

Abstract: The present invention relates to a photocatalytic portable air purifier that may maximize an air quality improvement effect by having a design structure optimized for a photocatalytic reaction and use a photocatalytic method to ensure convenient use and safety.

Abstract: The present invention relates to a refrigerant manifold to be applied to a vehicle cooling system, and relates to a refrigerant manifold which has refrigerant ports disposed at the outermost side of a manifold body such that installation and assembly convenience of pipes and hoses for connection to a refrigerant module and other components of a heat exchange system may be improved, and which facilitates accessibility of the refrigerant ports so that workability may be improved.