Abstract:
A cooling arrangement (1) for a multiplicity of electric devices (3) such as power semiconductor devices is proposed. The cooling arrangement (1) comprises a loop-type two-phase thermosyphon (5) comprising a multiplicity of evaporators (7), each evaporator (7) being in thermal contact with at least one of the electric devices (3), at least one condenser (9) and a plurality of inlet channels (11) and outlet channels (13). At least one controllable valve (23, 25) is arranged in at least one of the inlet channels (11) and outlet channels (13). The controllable valve is adapted for adjusting a local fluid pressure loss in the respective channel (11, 13). Due to the provision of such controllable valves, fluid flow of a coolant medium through each of the evaporators (7) may be controlled e.g. in dependence of actual heat loads occurring at the electric devices (3). Furthermore, while in conventional cooling arrangements lacking any controllable valves supply of coolant medium may be significantly influenced for example by stratification of liquid and vapor comprised in the two-phase coolant medium thereby resulting in instabilities of the cooling arrangement operation, the controllable valves (23, 25) provided in the proposed cooling arrangement may effectively suppress such negative influence of any density differences and stratifications, thereby enabling compensating any maldistributions of coolant medium throughout the stack (2) of evaporators (7) and electric devices (3) arranged in parallel to each other.
Abstract:
The invention relates to a heat exchanger (1) comprising a base plate (2) for receiving a heat load from one or more electric components (3), an evaporator (5) being in thermal contact with a surface of the base plate (2) for transferring said heat load into a first fluid in the evaporator channels (7), and a condenser (8) dissipating heat from the first fluid. In order to provide an efficient heat exchanger the heat exchanger comprises a collector space (16) receiving first fluid from the condenser (8'), and the collector space (16) which is located higher than the lower ends of the evaporator channels (7) is in fluid communication with lower ends of the evaporator channels (7) for passing first fluid received from the condenser (8) to the lower ends of the evaporator channels (7).
Abstract:
The present invention relates to the cooling of electric and/or electronic components, in particular to a module (102) of an electric and/or electronic system. The module (102) comprising a guiding structure (615) and an inlet (614) for receiving a stream of cooling air and with an outlet (616) for releasing cooling air thereafter in an operating state of the module (102). The guiding structure (615) being provided for guiding the cooling air entering through the inlet (614) and leaving the module through the outlet (616) in an operating state of the module (102). The module (102) comprises a thermosiphon cooler (600) with an evaporator (604) and a condenser (602) for transferring a majority of a heat load to said cooling air in an operating state of the module (102). The evaporator (604) is tilted with respect to the condenser (602) wherein the condenser (602) is arranged such that a major portion of said cooling air flows through the condenser (602).
Abstract:
This invention relates to a cooling apparatus comprising a base plate (10), an evaporator (1) and a condenser (14). In order to obtain a simple and efficient cooling apparatus the evaporator (1) is a porous aluminum evaporator having a capillary structure with pores and a plurality of larger sized evaporator channels extending through the evaporator (1) between a second end (8) and the first end (7) of the evaporator. A compensation chamber (2) extending along a second surface (16) of the evaporator (1) receives first fluid from the condenser (14) such that pores opening up into the second surface (16) of the evaporator (1) are provided with first fluid.
Abstract:
The invention relates to a heat exchanger (1) comprising a base plate (2) for receiving a heat load from one or more electric components (3), an evaporator (5) being in thermal contact with a surface of the base plate (2) for transferring said heat load into a first fluid in the evaporator channels (7), and a condenser (8) dissipating heat from the first fluid. In order to provide an efficient heat exchanger the heat exchanger comprises a collector space (16) receiving first fluid from the condenser (8'), and the collector space (16) which is located higher than the lower ends of the evaporator channels (7) is in fluid communication with lower ends of the evaporator channels (7) for passing first fluid received from the condenser (8) to the lower ends of the evaporator channels (7).
Abstract:
A two-phase heat exchanger for cooling at least one electronic and/or electric component with an evaporator and a condenser is provided. The evaporator is adapted to transfer heat from the electronic and/or electric component to a working fluid. The condenser comprises a roll-bonded panel, which has a first channel which has a first connection port and a second connection port. The evaporator has a second channel and first connection openings and second connection openings. The first connection port of the first channel is connected to one first connection opening of the evaporator and the second connection port of the first channel is connected to one second connection opening of the evaporator and the working fluid is provided in order to convey heat by means of convection from the evaporator to the condenser by flowing from the second channel through the first connection opening or the second connection opening of the evaporator towards the first channel.
Abstract:
The present invention relates to the cooling of electric and/or electronic components, in particular to an electric and/or electronic system (200) with a cabinet (400), which comprises a cabinet housing (406) comprising a first aperture for receiving a stream of cooling air. The cabinet housing (406) comprises a second aperture for releasing the cooling air thereafter in an operating state of the cabinet. At least two modules (102), each comprising a guiding structure with an inlet and an outlet are provided in the cabinet. The at least two modules (102) are arranged in the cabinet housing (406) such that a branch of the major portion of cooling air flowing through the first aperture of said cabinet housing (406) is enabled to flow into each module (102) via the inlet guided by the guiding structure through the dedicated module (102) to the outlet and thereafter through the second aperture out of the cabinet housing (406).
Abstract:
This invention relates to a cooling apparatus comprising a base plate (10), an evaporator (1) and a condenser (14). In order to obtain a simple and efficient cooling apparatus the evaporator (1) is a porous aluminum evaporator having a capillary structure with pores and a plurality of larger sized evaporator channels extending through the evaporator (1) between a second end (8) and the first end (7) of the evaporator. A compensation chamber (2) extending along a second surface (16) of the evaporator (1) receives first fluid from the condenser (14) such that pores opening up into the second surface (16) of the evaporator (1) are provided with first fluid.
Abstract:
The invention relates to a heat exchange device based on a pulsating heat pipe and a cooling arrangement with at least one heat exchange device. A technical objective of the invention is to improve the heat performance of a heat exchange device. The objective is achieved by a heat exchange device based on a pulsating heat pipe (1) comprising a plurality of pipes (9) to provide fluid paths between a first fluid distribution element (10) and a second fluid distribution element (11) of the heat exchange device (1), wherein each pipe (9) of the plurality of pipes (9) comprises a group of channels (12), wherein each of the first fluid distribution element (10) and the second fluid distribution element (11) comprises at least a plate (13) of a first type, wherein each plate (13) of the first type comprises openings (14) for providing an alignment functionality for the plurality of pipes (9); and wherein the first fluid distribution element (10) comprises a plate (15) of a second type, and wherein the plate (15) of the second type comprises openings (17) for providing fluid paths between the plurality of pipes (9), and wherein the plate (15) of the second type is positioned on a side of the plate (13) of the first type of plates of the first fluid distribution element (10) that is opposite to the second fluid distribution element (11).
Abstract:
An enclosure (10) for an electronic device (20) is provided. The enclosure comprises an enclosure wall (30) comprising a dielectric material, a first conductive layer (40) abutting an inner face (50) of the enclosure wall (30), and a second conductive layer (60) abutting an outer face (70) of the enclosure wall (30), wherein the first and the second conductive layers (40, 60) are electrically insulated from each other and are electrically connectable to predefined electric potentials, so that the electric field in the enclosure wall (30) can be homogenized in an operational state of the enclosure (10). Further, an electronic device and electronic system are provided, comprising such enclosures and electronic circuits located therein.