The invention relates to a heat exchanger, in particular, an evaporator (1), in particular for a motor vehicle air-conditioner, with a number of closely arranged refrigerant tubes and at least one cold reservoir (4), in which a refrigerant medium is provided. The evaporator (1) comprises two paralle
The invention relates to a heat exchanger, in particular, an evaporator (1), in particular for a motor vehicle air-conditioner, with a number of closely arranged refrigerant tubes and at least one cold reservoir (4), in which a refrigerant medium is provided. The evaporator (1) comprises two parallel regions (1′ and 1″) running across the total width, the first region (V) corresponding to a conventional evaporator in design, the cold reservoir (4) being arranged in a separate second region (1″), through which at least a partial flow of refrigerant can flow which also flows through at least a part of the first region (1′) and the first and the second region are connected to each other by at least one overflow opening (13).
대표청구항▼
1. A heat exchanger for a motor vehicle air conditioning system comprising: a first region comprising first and second rows, each of the first and second rows including a first plurality of mutually adjacent, refrigerant-carrying tubes;a second region, placed downstream of the first region in a dire
1. A heat exchanger for a motor vehicle air conditioning system comprising: a first region comprising first and second rows, each of the first and second rows including a first plurality of mutually adjacent, refrigerant-carrying tubes;a second region, placed downstream of the first region in a direction of air flowing through the heat exchanger, and comprising a third row distinct from the first and second rows, the third row including a second plurality of mutually adjacent, refrigerant-carrying tubes and at least one cold store configured to be provided with a cold storage medium; wherein the cold store is not in the first region; andat least one overflow opening configured to connect the first region and the second region,wherein the first region and the second region are mutually parallel,wherein the first and second rows of tubes are arranged one behind the other in the direction of air flowing through the heat exchanger, and the second and third rows of tubes are arranged one behind the other in the direction of air flow through the heat exchanger,wherein the cold store is disposed such that at least a part of a refrigerant flow can flow through the cold store,wherein at least part of the refrigerant flow can flow through the first region, andwherein at least one first reservoir for a refrigerant and at least one second reservoir for the cold storage medium are formed substantially from three sheet-metal molded parts, comprising a base part, an intermediate part and a cover part. 2. The heat exchanger according to claim 1, wherein the first and second regions extend over an entire width of the heat exchanger in a direction perpendicular to the direction of air flowing through the heat exchanger. 3. The heat exchanger according to claim 1, wherein the at least one overflow opening comprises six overflow openings. 4. The heat exchanger according to claim 1, wherein at least one refrigerant-carrying tube from the second plurality of mutually, adjacent refrigerant-carrying tubes is arranged within the at least one cold store. 5. The heat exchanger according to claim 1, wherein at least one refrigerant-carrying tube from the second plurality of mutually adjacent, refrigerant-carrying tubes is a double-walled flat tube, the refrigerant being located in a central region of the double-walled flat tube and the cold storage medium being located in an outer region of the double-walled flat tube. 6. The heat exchanger according to claim 1, wherein the second plurality of refrigerant-carrying tubes or cold storage channels configured to carry the cold storage medium end in the second reservoir, through which the second plurality of refrigerant-carrying tubes or the cold storage medium channels project. 7. The heat exchanger according to claim 1, wherein a phase change temperature of the cold storage medium lies within a range from 0° C. to 30° C. 8. The heat exchanger according to claim 1, wherein within the cold store there is disposed at least one insert. 9. The heat exchanger according to claim 1, wherein at least one of the three sheet-metal molded parts is formed as a substantially trough-shaped part with an encircling edge which is turned up in a region of an end side. 10. The heat exchanger according to claim 1, wherein at least one of the three sheet-metal molded parts is formed as a deep-drawn part. 11. The heat exchanger according to claim 1, wherein at least one of the three sheet-metal molded parts has a lug for a clamped retention of one of the other sheet-metal molded parts. 12. The heat exchanger according to claim 1, wherein an upper plate plane of a lower reservoir of the second region and an upper plate plane of a lower reservoir of the first region run at substantially a same height. 13. The heat exchanger according to claim 1, wherein a structural height of a collector region of the second region is greater than a structural height of an adjacent reservoir of the first region. 14. The heat exchanger according to claim 1, wherein the first region has, in a first direction of its width adjacent to the second region, a number of blocks through which the refrigerant can flow through in a second direction different from the first direction, and wherein the second region has at least one block through which the refrigerant can flow in the second direction. 15. The heat exchanger according to claim 14, wherein the first region has directly adjacent to the second region two to four blocks, and the second region has one to six blocks. 16. An air conditioning system with a cold store for a motor vehicle comprising a refrigerant circuit having a heat exchanger according to claim 1. 17. The heat exchanger according to claim 1, wherein a collector region of the second region has at least one substantially planar section which is soldered areally to a corresponding substantially planar section of a collector region of the first region. 18. The heat exchanger according to claim 17, wherein the planar sections which are soldered to one another have an aperture to form the overflow opening. 19. The heat exchanger according to claim 1, wherein the second plurality of refrigerant-carrying tubes end in a third reservoir, which is configured to be separate from the first reservoir of the first region by the at least one overflow opening. 20. The heat exchanger according to claim 19, wherein, in the second region, an upper collector region and a lower collector region are provided with the second reservoir for the cold storage medium and the third reservoir, wherein the upper collector region and the lower collector region are connected by a plurality of tubes, with at least one of the tubes having at least one first channel configured to conduct the refrigerant and at least one second channel, which is separated by a partition, configured to conduct the cold storage medium. 21. The heat exchanger according to claim 20, wherein one of the first and second channels projects at an end side beyond the other of the first and second channels, with the projecting channel extending entirely through one of the second reservoirs. 22. The heat exchanger according to claim 20, wherein at least one of the first and second channels has a plurality of separate chambers. 23. The heat exchanger according to claim 20, wherein one of the first and second channels is formed as an outer tube and the other one of the first and second channels is formed as an inner tube which is inserted into the outer tube. 24. The heat exchanger according to claim 23, wherein at least one of the outer tube and the inner tube is configured to radially guide the other of the outer tube and the inner tube. 25. The heat exchanger according to claim 23, wherein the inner tube is the first channel configured to conduct the refrigerant and the outer tube is the second channel configured to conduct the cold storage medium. 26. The heat exchanger according to claim 23, wherein at least one of the first and second channels is formed as an extruded profile.
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이 특허에 인용된 특허 (10)
Bureau, Cathy; Burk, Roland; Duerr, Gottfried; Feuerecker, Guenther; Molt, Kurt; Seewald, Wolfgang; Taxis-Reischl, Brigitte; Weinbrenner, Marcus, Air-conditioner for a motor vehicle.
Haller,Regine; Lepetit,Loic; Petit,Christian; Loup,Didier, Heat exchanger with thermal inertia for a heat transfer fluid circuit, particularly of a motor vehicle.
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