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The present invention relates to the heat exchanger 1 of refrigerant circuitry of an air-conditioning system for a vehicle, which enables a bidirectional pass flow. The air-conditioning system is configured to perform a combined operation of cooling device mode and heat pump mode, the heat exchanger

The present invention relates to the heat exchanger 1 of refrigerant circuitry of an air-conditioning system for a vehicle, which enables a bidirectional pass flow. The air-conditioning system is configured to perform a combined operation of cooling device mode and heat pump mode, the heat exchanger 1 is formed in the form of a multi-pass, and the flow direction of a refrigerant varies depending on operation mode. The first heat exchanger 1 formed in the form of a multi-pass includes header pipes 2 and 3, flow paths assigned to respective passes, and means configured to partition an internal volume space of one or more header pipes 2 and 3 into independent regions. A first pass of the heat exchanger 1 has a greater flow cross section and greater heat exchange surface than the last pass.

대표청구항 ▼

1. A combined cooling device mode and heat pump mode heat exchanger for an air-conditioning system for a vehicle, comprising: a first header pipe for receiving a refrigerant;a second header pipe for receiving the refrigerant spaced apart from and disposed substantially in parallel with the first hea

1. A combined cooling device mode and heat pump mode heat exchanger for an air-conditioning system for a vehicle, comprising: a first header pipe for receiving a refrigerant;a second header pipe for receiving the refrigerant spaced apart from and disposed substantially in parallel with the first header pipe;a first refrigerant entrance in fluid communication with the first header pipe;a second refrigerant entrance in fluid communication with the second header pipe, the first refrigerant entrance having a flow cross section greater than a flow cross section of the second refrigerant entrance;a plurality of flow passes, each of the flow passes including a plurality of flow paths disposed substantially in parallel between the first header and the second header, each of the flow paths formed by fluid connection parts and in fluid communication with at least a portion of the first header pipe and at least a portion of the second header pipe, at least one of the flow passes having a flow cross section greater than a flow cross section of an other one of the flow passes and a heat exchange surface greater than a heat exchange surface of the other one of the flow passes; andat least one moveable separation component disposed within at least one of the first header and the second header, the at least one moveable separation component partitioning the at least one of the first header and the second header into independent regions, wherein a flow of the refrigerant through the heat exchanger is a multi-pass flow and a direction of the flow of the refrigerant through the heat exchanger is bidirectional, wherein the refrigerant flows through at least one of the flow passes in a first direction during a cooling device mode of the heat exchanger and the refrigerant flows through the at least one of the flow passes in a second direction during a heat pump mode of the heat exchanger, wherein the first refrigerant entrance conveys the refrigerant to the heat exchanger during the cooling device mode and the second refrigerant entrance conveys the refrigerant to the heat exchanger during the heat pump mode, wherein the at least one moveable separation component including a moveable closing component, a first stop component, and a second stop component, wherein a gap is formed between an outer circumferential surface of the second stop component and an edge of the first stop component, wherein the second stop component has a plurality of openings formed therethrough adjacent and spaced from the outer circumferential surface thereof, and wherein a first portion of each of the plurality of openings is open and a second portion of each of the plurality of openings is closed when the moveable closing component contacts the second stop component such that the gap and the first portion of each of the plurality of openings are flow paths of fluid through the at least one of the first header and the second header. 2. The heat exchanger of claim 1, wherein the first refrigerant entrance has an inside diameter greater than 8 millimeters. 3. The heat exchanger of claim 1, wherein the first refrigerant entrance has an inside diameter greater than 6 millimeters. 4. The heat exchanger of claim 1, wherein the fluid connection parts forming the flow paths are formed from a plurality of flat tube profiles, each of the flat tube profiles having a profile depth of less than 20 millimeters. 5. The heat exchanger of claim 4, wherein the plurality of flow passes includes two flow passes, a ratio of a number of the flat tube profiles of a first pass of the two flow passes to a number of the flat tube profiles of a second pass of the two flow passes is about 3:5. 6. The heat exchanger of claim 4, wherein the plurality of flow passes includes four flow passes, a ratio of a number of the flat tube profiles of a first pass of the four passes to a number of the flat tube profiles of a second pass of the four passes to a number of the flat tube profiles of a third pass of the four passes to a number of the flat tube profiles of a fourth pass of the four passes is about 19:13:10:6. 7. A heat exchanger of refrigerant circuitry of an air-conditioning system for a vehicle, comprising: a header pipe for receiving a refrigerant;a plurality of flow paths disposed in parallel and in fluid communication with the header pipe;at least two refrigerant entrances, at least one of the refrigerant entrances having a connection block configured for connection with a refrigerant line formed therein and at least one short line disposed between the header pipe and the connection block, wherein a direction of a flow of the refrigerant through the heat exchanger is bidirectional and the direction of the flow of the refrigerant within the heat exchanger varies depending on an operation mode of the air-conditioning system, and wherein the refrigerant sequentially flows through the flow paths, the header pipe, and at least one of the refrigerant entrances in a first flow direction; anda moveable separation component configured for alignment within the header pipe along a length of the header pipe, the moveable separation component further comprising: a moveable closing component;a first stop component; anda second stop component, wherein a gap is formed between an outer circumferential surface of the second stop component and an edge of the first stop component, wherein the second stop component has a plurality of openings formed therethrough adjacent and spaced from the outer circumferential surface thereof, and wherein a first portion of each of the plurality of openings is open and a second portion of each of the plurality of openings is closed when the moveable closing component contacts the second stop component such that the gap and the first portion of each of the plurality of openings are flow paths of fluid through the header pipe. 8. An apparatus for partitioning an internal volume space of header pipes of a heat exchanger and changing a flow of a fluid in the header pipes of the heat exchanger, comprising: at least one moveable separation component configured for alignment within at least one of the header pipes of the heat exchanger along a length of the at least one of the header pipes, the at least one moveable separation component further comprising: a moveable closing component;a first stop component cooperating with the moveable closing component to open and close the at least one moveable separation component based on a differential pressure exerted on the at least one moveable separation component; anda second stop component, wherein a gap is formed between an outer circumferential surface of the second stop component and an edge of the first stop component, wherein the second stop component has a plurality of openings formed therethrough adjacent and spaced from the outer circumferential surface thereof, and wherein a first portion of each of the plurality of openings is open and a second portion of each of the plurality of openings is closed when the moveable closing component contacts the second stop component such that the gap and the first portion of each of the plurality of openings are flow paths of the fluid through the at least one of the header pipes. 9. The apparatus of claim 8, wherein the first stop component has an internal contour defining an opening for receiving the fluid therethrough when the moveable separation component is open and for cooperating with the moveable closing component to militate against flow of the fluid through the opening when the moveable separation component is closed. 10. The apparatus of claim 8, wherein the moveable closing component moves with respect to the first stop component along the length of the at least one of the header pipes. 11. The apparatus of claim 8, wherein the moveable separation component includes a guide for guiding the movable closing component with respect to the first stop component. 12. The apparatus of claim 11, wherein a plurality of guide components configured to guide the moveable closing component is formed on a face of the moveable separation component, the guide components uniformly disposed in the first stop component along a circumference of an internal contour of the first stop component, each of the guide components is a circular segment having a step part directed toward a center point of the circular segment, and each of the step parts is configured to support and fix the second stop component. 13. The apparatus of claim 11, wherein the guide militates against twisting and rotating of the moveable closing component. 14. The apparatus of claim 8, wherein the at least one movable separation component is disposed in at least one of the header pipes of the heat exchanger to facilitate dynamically changing at least one of a flow cross section and a heat exchange surface of the heat exchanger.