Heat-pipe engine structure

Abstract

A heat-pipe engine structure applicable to heat-exchange system. The heat-pipe engine structure includes a metal mesh laminate composed of more than two metal meshes which are tightly laminated with each other to form numerous meshes several times the unlaminated meshes of any original metal mesh. An upper metal film and a lower metal film are respectively bonded to upper and lower faces of the metal mesh laminate. The peripheries of the metal films are sealed to form a housing enclosing the metal mesh laminate. The meshes of the metal mesh laminate form a first nature vapor chamber. A liquid ingress and a vapor egress are formed on the periphery of the housing in different positions for externally connecting with a circulating loop to form a loop heat-pipe for one-way circulation of incoming liquid and outgoing vapor. The meshes of the metal mesh laminate are densely and evenly distributed in as the porous space in the housing for effectively conducting the working fluid to achieve better heat evaporation effect. In heat-exchange procedure, the working fluid is quickly changed between two phases to enhance the circulation. The laminated porous meshes form enough capillary pressure that meniscus in the engine wick supports enough pressure to overcome total system pressure drops from loop.

Description

BACKGROUND OF THE INVENTION [0001] The present invention is related to a heat-pipe engine structure applicable to heat-exchange system. The heat-pipe engine structure includes a metal mesh laminate composed of more than two metal meshes which are tightly laminated with each other to form numerous meshes several times the meshes of any original metal mesh. An upper metal film and a lower metal film are respectively bonded to upper and lower faces of the metal mesh laminate. The peripheries of the metal films are sealed to form a housing enclosing the metal mesh laminate. A working fluid is contained in at least a part of the meshes. The fluid-less meshes naturally form vapor chambers communicating with each other. The meshes of the metal mesh laminate are densely and evenly distributed for effectively conducting the working fluid to enhance evaporation effect. In heat-exchange procedure, the working fluid is quickly changed between two phases that enhance the circulation and heat-exc...

AI Technical Summary

Benefits of technology

[0019] It is therefore a primary object of the present invention to provide a heat-pipe engine with porous structure. The heat-pipe engine structure includes a metal mesh laminate composed of at least two metal meshes enclosed in a housing. The metal mesh laminate forms a micro-porous structure having numerous meshes which are evenly densely distributed in the housing. The fluid is evenly contained in at least a part of the meshes of the metal mesh laminate for more effective heat-exchange. Therefore, the working fluid is more quickly changed between two phases. In addition, the heat-pipe engine has flat structure and can be made with lightweight and minitype for wider application. A liquid ingress and a vapor egress are formed on the housing of the heat-pipe engine in different positions for externally connecting with a loop heat-pipe for one-way circulation of incoming liquid and outgoing vapor. Accordingly, a better heat conduction effect can be achieved.

[0020] It is a further object of the present invention to provide the above heat-pipe engine in which the housing is formed with another vapor chamber. When the working fluid is heated and evaporated, the vapor will not be compressed to create too high saturation pressure which will hinder the internal fluid from horizontally circulating. In other words, a chamber space is reserved between the egress of the housing and the metal mesh laminate for receiving the expanded volume of the saturation vapor transformed from the instantaneously boiled liquid. Therefore, the meniscus in the engine wick will result enough capillary pressure to have the saturated vapor prime into the loop by egress, so that the working fluid can more smoothly flow through the housing to enhance the heat conduction effect.

[0021] It is still a further object of the present invention to provide the above heat-pipe engine structure which is applicable to heat-exchange system. A liquid ingress and a vapor egress are formed on the housing of the heat-pipe engine for externally connecting with a circulating loop to form a loop heat-pipe for one-way circulation of incoming liquid and outgoing vapor. This eliminates the shortcoming of energy loss of the reciprocally circular heat-exchange of the conventional heat-pipe.

Problems solved by technology

Therefore, it is hard to truly effectively conduct the fluid to change between two phases.

Due to gravity, such design limits the application of the evaporator and the condenser.

Such design tends to seriously interfere with horizontal flowing of the fluid.

Moreover, the difficulty in processing and cost for the processing are higher.

This is not so cost-effective.

The meniscus in the evaporator wick result capillary pressure will equal to the total system pressure drop, but powder metallurgy process also disturb the outgas process, that is, it can not be mass-produced for outgas process with powder metallurgy.

Therefore, it is hard to mass-produce the products with unified quality.

Furthermore, it is hard to control the thickness of the housing structure and the distribution of the internal powder is more complicated.

Therefore, the yield is low.

The design of system reaction efficiency is often neglected.

Such structural design leads to limitation of design of evaporator and reservoir or compensation chamber.

While successfully challenging high power, it is impossible to mobilely deal with various heat changes.

Therefore, such structure has poor presentation in thermodynamics, especially low-power thermodynamics.

With respect to the application of an existent CPU, the CPU cannot accept the heat cooler which can only deal with 200 W heat dissipation, while being unable to solve 20 W problem.

The change of room temperature will inevitably affect the effect.

When sintering the metal particles, the particles can be hardly evenly distributed.

Therefore, the quality of the product cannot be unified.

Therefore, the heat conduction effect can be hardly enhanced.

Moreover, the thick heat conductor causes unexpected heat transfer.

Therefore, the heat conductor can hardly receive the pressure of saturated vapor generated after the working fluid absorbs the heat.

As a result, the temperature is apt to abruptly increase and the heat dissipation effect is poor.

Therefore, the heat dissipation effect is quite limited.

Images