Abstract:
A brazed aluminum microchannel heal exchanger comprising a stack of alternating tubes and serpentine fins includes an expansion relief feature that accommodates uneven thermal expansion in the heat exchanger. The expansion relief feature provides the heat exchanger with sufficient structural support, at least during assembly, so that components of the heat exchanger can be firmly clamped in compression during a controlled-atmosphere brazing process, in some examples, the expansion relief feature is a gap or sliding engagement between adjacent headers of the heat exchanger. In addition or alternatively, the expansion relief feature comprises one or more slits cut into the serpentine fins after the brazing process, wherein each slit extends generally parallel to the tubes.
Abstract:
The invention relates to a heat exchanger, particularly for a motor vehicle, comprising a plurality of flat tubes (3), which are stacked parallel to each other in a stacking direction, and at least one collector (1, 2) for distributing a fluid to the flat tubes (3). At least one end of the flat tubes (3) opens out into the collector (1, 2). The collector (1, 2) comprises at least a first segment (1a-1d, 2a-2d) and a second segment (1a-1d, 2a-2d) adjacent thereto in the stacking direction, the segments (1a-1d, 2a-2d) being firmly bonded to each other. Each of the segments (1a-2d) has several passages (4) in a base region (5), said flat tubes (3) being inserted into the passages (4).
Abstract:
Die Erfindung betrifft ein Wärmeaustauschsystem (1) mit einem Wärmetauscher (2) zum Austausch von Wärme zwischen einem Fluid (3) und einer Umgebungsatmosphäre. Der Wärmetauscher (2) umfasst dabei einen Einlasskanal (4), einen Auslasskanal (5) und einen Wärmeübertrager (6) mit einer Vielzahl von Mikrokanälen (61), wobeider Einlasskanal (4) mit einem Einlasssegment (62) des Wärmeübertragers (6),und der Auslasskanal (5) mit einem Auslasssegment (63) des Wärmeübertragers (6) derart strömungsverbunden ist, dass das Fluid (3) zum Austausch von Wärme mit der Umgebungsatmosphäre vom Einlasskanal (4) über das Einlasssegment (62), durch die Vielzahl von Mikrokanälen (61) des Wärmeübertragers (6), und über das Auslasssegment (63) dem Auslasskanal (5) zuführbar ist. Erfindungsgemäss umfasst das Wärmeaustauschsystem (1) ein Kompensationsmittel (7) zum Ausgleich von thermomechanischen Spannungen. Die Erfindung betrifft des weiteren ein Verfahren zur Herstellung eines erfindungsgemässen Wärmeaustauschsystems (1).
Abstract:
The invention relates to a multiple-flow heat exchanger (1), especially a gas cooler, comprising at least two flows (2, 3) through which a fluid (13) respectively runs in opposite directions and which respectively comprise a group of parallel channels (4) provided with lamellae (5) positioned between the channels (4) in a sandwich-type manner. A deflecting pocket (6) is positioned on a first front side (1.1) of the heat exchanger (1), for reversing the direction of flow of the fluid (13), and a fluid distributor (7) for a first flow (2) and a fluid collector (8) for a second flow (3) are arranged on a second opposing front side (1.2) of the heat exchanger (1). According to the invention, the adjacent channels (4.1), each with a different fluid temperature, for the adjacent flows (2, 3), are thermally decoupled from each other.
Abstract:
The present invention relates to combo- coolers (34) comprising an oil cooler element (15) and a condenser element (14) and having manifolds, tubes (38, 39, 45) in fluid communication with manifold, and fins (41) , and at least one controlling device (40) in the manifold or manifolds that controls, via pressure or temperature differences, the flow of fluids through the last condenser tube (45) .
Abstract:
A heat exchanger 1 includes a condenser section 2, a subcooling section 3, and a gas-liquid separation section 4 which is provided between the condenser section 2 and the subcooling section 3. A desiccant loading member 28, which also serves as an outlet side joint member is fixedly secured to the first header 21 of the gas-liquid separation section 4 and the first header 15 of the subcooling section 3, while bridging them. The desiccant loading member 28 is provided with a refrigerant passage 32 in fluid communication with a refrigerant outlet 31 formed in the first header 15 of the subcooling section 3, and a communicating hole 33 establishing fluid communication between the refrigerant passage 32 and an insert hole 29 of the first header 21 of the gas-liquid separation section 4. A part of the refrigerant passage 32 and the communicating hole 33 form a holding-container insertion through hole 34. A holding container 24 filled with a desiccant 25 is inserted into the liquid receiving tube 23 of the gas-liquid separation section 4 from an outer end opening of the refrigerant passage 32 through the holding-container insertion through hole 34 and the insert hole 29. This heat exchanger 1 facilitates loading of the desiccant 25 thereinto.
Abstract:
A multi-processor system board (90)s at least a first processor (A1) installed on the system board (90) and at least a first liquid cooling system (A2, A3, A4, A5) configured to provide dedicated cooling for the first processor (A1). A second processor (B1) may be installed on the system board (90) and a second liquid cooling system (B2, B3, B4, B5) may be configured to provide dedicated cooling for the second processor (B1). The liquid cooling system includes a tank (61), a first heat exchanger (62) attached to a first side of the tank (61), and a second heat exchanger (63) attached to a second side of the tank (61) opposite to the first side of the tank.