Compound heat-exchanger

Abstract

The invention relates to a composite heat exchanger, which includes the shell which opens a hatch on the top and with a hollow cavity and the superior cover which meet with the shell, between the shell and the cover seals by the water, and packaging the shell and cover together to compose a heat exchanger, whose characterized is that setting a oscillating heat pipe through the cover, the heat end of the oscillation heat pipe installs in the groove of cover, the wall of the shell is the micro-porous structure which can produce capillary force.

Description

technical field [0001] The invention relates to the field of microscale heat transfer, in particular to a composite heat exchanger. Background technique [0002] With the continuous advancement of science and technology, the density of electronic components in various electronic products is getting higher and higher, and its high calorific value has gradually become a bottleneck restricting its further development. In this case, the micro heat exchange system came into being. In various micro heat exchange systems, most researchers are engaged in micro heat pipe technology, including capillary type, forced vibration (oscillation) type and micro groove (group) internal heat pipe technology. Single-phase and phase transition research, and achieved a lot of research results. [0003] The calculation results show that the theoretical limit value of the evaporation heat flux inside the microgroove group has reached 1000W / cm 2 As mentioned above, at the same time, with the help ...

AI Technical Summary

Problems solved by technology

Of course, there are many deficiencies in the oscillating heat pipe, such as its diameter cannot be too large or too small, because when it is too large, the liquid plug and air bubbles cannot coexist under the action of surface tension, and when it is too small, it is necessary to increase the evaporation pressure to overcome the capillary force. Thus affecting the oscillation effect; the tube-type oscillating heat pipe cannot effectively dissipate heat on the flat heating surface, and the plate-type oscillating heat pipe can dissipate heat on the flat heating surface, but its effective contact area with the heating surface is limited, which limits its performance.

[0005] Based on the above analysis, we can see that micro-groove group evaporative heat transfer is an effective means to solve high heat flow and heat generation, but the condensation cycle of its steam is very demanding. If we can condense it immediately when the steam is generated, it is bound to be Make the system more efficient; on the other hand, the oscillating heat pipe has excellent heat transfer performance, but its processing technology is not yet mature, and its effective heat dissipation area is limited for the flat heating surface

Images