JP5013225B2 - Bubble circulation drive type heat pipe device - Google Patents

Description

  The present invention relates to a heat pipe device that circulates a sealed working fluid (heat medium fluid) through a working fluid heating section (heat absorption section or heat receiving section) and a heating working fluid heat radiation section (cooling section), and transports heat. The heat dissipating hydraulic fluid flows continuously into the hydraulic fluid heating unit while the hydraulic fluid is continuously discharged from the hydraulic fluid heating unit via the buoyancy of the bubbles (vapor bubbles) of the hydraulic fluid that are continuously generated in the heating unit. It is related with the improvement of the bubble circulation drive-type heat pipe apparatus which circulates hydraulic fluid by the method of making it.

  As this kind of heat pipe device, the heating hydraulic fluid that flows out from the hydraulic fluid heating section that can continuously generate the bubbles of the hydraulic fluid by heating through the heating mechanism, and that rises upward together with the bubbles. After being guided to the heated hydraulic fluid reservoir that forms a vapor phase on the liquid phase via the riser pipe, it is guided to the heated hydraulic fluid heat radiating section via the heated hydraulic fluid descender pipe that extends downward, and the heated hydraulic fluid heat dissipation The heat dissipating hydraulic fluid that has flowed out of the part has been proposed to flow back to the hydraulic fluid heating unit through the heat dissipating hydraulic fluid pipe that extends upward and then passes through the vapor phase of the heated hydraulic fluid reservoir. (For example, refer to Patent Document 1).

  According to this proposed heat pipe device, it is said that the heat transport amount and transport speed can be increased regardless of the positional relationship between the hydraulic fluid heating section and the heating hydraulic fluid heat radiation section. The bubble vapor that accumulates in the vapor phase section at the top of the hydraulic fluid reservoir is cooled and condensed through the heat dissipation hydraulic fluid pipe section from the heat dissipation hydraulic fluid flowing in the heat dissipation hydraulic fluid pipe section that extends through the vapor phase section. Along with this, the pressure decreases, but since it coexists with the heating hydraulic fluid, both the release of condensation heat (latent heat) and the pressure decrease are relatively slow.

  Therefore, the generation of bubbles in the hydraulic fluid heating section is relatively slow. The rising speed (outflow speed) of the heated hydraulic fluid via the buoyancy of the bubbles and the inflow speed of the heat dissipating hydraulic fluid into the hydraulic fluid heating section, that is, the hydraulic fluid The circulation speed is also relatively slow, and as a result, there is a problem that it is difficult to achieve high-speed and highly efficient heat transport as a whole.

JP 2009-52757 A

  In view of the above-mentioned problems recognized in the already proposed one, the present invention is a bubble circulation drive type heat pipe device which is high-speed and high-speed regardless of the positional relationship between the hydraulic fluid heating unit and the heating hydraulic fluid heat dissipation unit. The main challenge is to provide efficient heat transport.

  According to the present invention, the above-described problem is a bubble circulation drive type heat pipe device that circulates a sealed working fluid through the buoyancy of bubbles, as defined in claim 1 of the invention. A heated hydraulic fluid reservoir that forms a vapor phase on the liquid phase is connected to the hydraulic fluid heating unit that can continuously generate bubbles of the hydraulic fluid via the mechanism via the heated hydraulic fluid riser, and the heating A heating hydraulic fluid radiating section is connected to the liquid phase portion of the hydraulic fluid reservoir via a heating hydraulic fluid downcomer, and a heating hydraulic fluid reservoir is connected to the heating hydraulic fluid radiating section via a radiating hydraulic fluid rising pipe. A heat dissipating hydraulic fluid reservoir that forms a gas phase on the liquid phase is connected at the same height position, and the liquid phase part of the heat dissipating hydraulic fluid reservoir is connected to the hydraulic fluid heating unit via the heat dissipating hydraulic fluid downcomer. While connecting the gas phase part of the heat dissipation hydraulic fluid reservoir and the vapor phase part of the heating hydraulic fluid reservoir. Formed by connecting through the trachea, the solution by bubble circularly driven heat pipe device.

  In the heat pipe device of the present invention, as much as possible, the gas phase capable of receiving the generated vapor is provided on the liquid phase of the hydraulic fluid heating unit, and the lower end opening (liquid The inflow port portion) faces the vapor phase directly below (the liquid phase liquid level directly below).

In the heat pipe device according to the first aspect of the present invention, the working fluid in the working fluid heating section is heated through the heating working fluid riser in conjunction with the rising of the bubbles generated here. liquid phase portion inflows city reservoir, with excitement in much higher state than the liquid level on the liquid surface of the heat dissipating hydraulic fluid within reservoir, flows with the outflow of heated working fluid therefrom to the working fluid heated portion The outflow of the heat dissipating hydraulic fluid from the heat dissipating hydraulic fluid reservoir lowers the liquid level in the heat dissipating hydraulic fluid reservoir, while the vapor of the hydraulic fluid flowing into the heating hydraulic fluid reservoir and occupying the vapor phase passes through the steam pipe, Based on the pressure difference and temperature difference with the gas phase in the heat dissipation hydraulic fluid reservoir, the gas flows into the heat dissipation hydraulic fluid reservoir and occupies the same height position of the heating hydraulic fluid reservoir and the heat dissipation hydraulic fluid reservoir Reduce pressure difference.
As a result, the hydraulic fluid flows from the heated hydraulic fluid reservoir to the radiating hydraulic fluid reservoir so that both liquid levels are directed to the same level (same height). That is, after the heated working fluid in the reservoir heated working fluid flows into the heated working fluid heat radiating portion through a heated working fluid downcomer, in the state of heat radiation hydraulic fluid, Ru enter the reservoir radiator hydraulic fluid through the heat dissipating hydraulic fluid riser. The radiating hydraulic fluid in the radiating hydraulic reservoir flows into the hydraulic fluid heating section through the radiating hydraulic fluid downcomer as the hydraulic fluid flows out from the hydraulic fluid heating section, and thereafter repeats such flow, that is, circulation. Go. The vapor of the working fluid flowing into the reservoir while the steam pipe through thermally actuated fluid discharge is cooled by direct contact for heat dissipation working fluid condenses and integrated with the heat dissipating hydraulic fluid.

  That is, according to the heat pipe device of the present invention, the vapor of the working fluid in the heating working fluid reservoir flows into the heat radiation working fluid reservoir having a low temperature and pressure and directly contacts the heat radiation working fluid. After entering the reservoir, it quickly condenses, and the pressure rapidly decreases with the temperature. Following this, the steam pressure in the heated hydraulic fluid reservoir also decreases rapidly. As a result, the generation of steam in the hydraulic fluid heating unit is activated, and the rise of the heating hydraulic fluid through the heating hydraulic fluid riser speeds up. Inflow is also accelerated. In this way, both the movement of the steam and the circulation of the working fluid are activated together with the release of the condensation heat of the steam, so that high-speed and efficient heat transport is performed.

  According to the attachment of the vapor-accepting vapor phase in the hydraulic fluid heating section and the opening configuration of the heated hydraulic fluid riser pipe immediately below the vapor phase according to claim 2, the generation of bubbles in the hydraulic fluid heating section and the heating hydraulic fluid rise Inflow to the pipe is performed accurately without abnormal boiling such as bumping of the hydraulic fluid.

1 is a schematic diagram showing a configuration outline of Embodiment 1 of a heat pipe device according to the present invention. It is the schematic which shows the structure outline | summary of Example 2 of the heat pipe apparatus of this invention. It is the schematic which shows the structure outline | summary of Example 3 of the heat pipe apparatus of this invention.

  As the hydraulic fluid in the heat pipe device according to the present invention, water, alcohol, ammonia water, Freon liquid, oils, mercury, etc. are used singly or in combination of two or more depending on the operating temperature range. be able to. In general, the hydraulic fluid is sealed in a reduced pressure state, but may be in an atmospheric pressure state.

  Moreover, the height relationship of the relative position of a hydraulic fluid heating part and a heating hydraulic fluid thermal radiation part can be arbitrarily selected according to the use.

  Hereinafter, based on FIGS. 1 to 3, Examples 1 to 3 in which the height relationship between the hydraulic fluid heating unit and the heating hydraulic fluid radiating unit are different will be described.

  In the first embodiment schematically shown in FIG. 1, the tank-shaped hydraulic fluid heating unit 11 heated by the heating mechanism 25 and the tank-shaped heating hydraulic fluid radiation unit 15 that radiates heat to the cooling mechanism 26 are the same without providing a height difference. The vapor of the hydraulic fluid accumulated in the upper gap (gas phase portion) 11a due to the boiling of the hydraulic fluid 20 in the hydraulic fluid heating unit 11 is opened at a position directly below the liquid level of the hydraulic fluid 20. Into the heating hydraulic fluid rising pipe 12 as bubbles 21 and rises together with the heating hydraulic fluid having a high temperature to raise the liquid level in the heating hydraulic fluid reservoir 13 while raising the liquid surface of the heating hydraulic fluid (vapor) After entering the phase part) 13a, the gap (gas phase part) in the heat-dissipating hydraulic fluid reservoir 17 installed at the same level as the heating hydraulic fluid reservoir 13 above the heating hydraulic fluid radiator 15 through the steam pipe 19 ) Heat release fluid that flows into 17a and has a low temperature Contact with condensed is cooled.

On the other hand, the high-temperature heating hydraulic fluid that has risen in a state where the liquid level is raised in the heating hydraulic fluid reservoir 13 is the heating hydraulic fluid in the same level of the liquid level difference between the heating hydraulic fluid reservoir 13 and the heat radiation hydraulic fluid reservoir 17. After flowing from the lower portion of the reservoir 13 to the lower portion of the heating hydraulic fluid radiating portion 15 through the heating hydraulic fluid descending pipe 14, it flows into the heating hydraulic fluid radiating portion 15 where heat is radiated to the cooling mechanism 20 to lower the temperature. in a state of low heat dissipation working fluid of this temperature, and flows into the 17 reservoir radiator hydraulic fluid through a thermally actuated fluid riser 16 release, where it condenses the vapor of the working fluid uptake, thereby sump heated working fluid The steam pressure of the steam 13 is also reduced via the steam pipe 19 to promote the generation of bubbles 21 in the hydraulic fluid heating unit 11, and then the thermal radiation hydraulic fluid in the thermal radiation hydraulic fluid reservoir 17 is transferred from the hydraulic fluid heating unit 11. In conjunction with the outflow of heated hydraulic fluid, Through the radiator hydraulic fluid downcomer 18 extending from the bottom to the bottom of the hydraulic fluid heating unit 11, to flow into the hydraulic fluid heating unit 11, it is used for the next circulation.

Through such movement and condensation of the vapor of the hydraulic fluid 20 and circulation through heating and heat dissipation of the hydraulic fluid 20, heat transport including the combined latent heat and sensible heat of the hydraulic fluid 20 is performed quickly and efficiently.

As shown in FIG. 2, this embodiment is obtained by arranged at a position higher than the thermal unit 15 release heat hydraulic fluid to hydraulic fluid heating unit 11, the flow of the steam and the working fluid 20 is the same as in Example 1 is there. As can be seen from FIG. 2, in this embodiment, the length of the heating hydraulic fluid riser 12 can be shortened, so that the high temperature portion can be made compact. In FIG. 2, the heating mechanism and the cooling mechanism are not shown.

This embodiment, as schematically illustrated in FIG. 3, in contrast to Example 2, an example of arranging the heat section 15 release heat working fluid at a position higher than the working fluid heating unit 11, the hydraulic fluid 20 and the vapor The flow of is the same as in the first and second embodiments. According to this embodiment, conversely to the second embodiment, the portion having a low temperature can be made compact by shortening the length of the heat dissipating hydraulic fluid riser 16. In FIG. 3, the heating mechanism and the cooling mechanism are omitted.

  The heat pipe device according to the present invention, from the viewpoint of high-efficiency heat transport, cooling of electronic equipment such as personal computers and heat engine equipment such as automobile engines, hot water supply using solar heat, snow melting using hot water, etc. It can be used for various types of heat control and effective use of energy.

  In addition, this heat pipe device is made of a transparent material such as glass and has a configuration in which the working fluid is colored or mixed with foil so that the circulation of the working fluid can be visually observed. It can also be used.

11 Hydraulic fluid heating part 11a Cavity part (gas phase part)
12 Heating hydraulic fluid riser 13 Heating hydraulic fluid reservoir 13a Cavity (steam phase)
14 Heating hydraulic fluid downcomer 15 Heating hydraulic fluid radiating part 16 Radiating hydraulic fluid riser 17 Heating hydraulic fluid reservoir 17a Air gap (gas phase)
18 Heat Dissipating Hydraulic Fluid Downcomer 19 Steam Pipe 20 Hydraulic Fluid 21 Bubble 25 Heating Mechanism 26 Cooling Mechanism

Claims (2)

  It is a bubble circulation drive type heat pipe device that circulates the enclosed hydraulic fluid through the buoyancy of the bubble, and the heated hydraulic fluid rises to the hydraulic fluid heating section that can continuously generate the hydraulic fluid bubbles via the heating mechanism A heating hydraulic fluid reservoir that forms a vapor phase on the liquid phase is connected via a pipe, and a heating hydraulic fluid heat dissipation portion is connected to the liquid phase part of the heating hydraulic fluid reservoir via a heating hydraulic fluid downcomer. And, to the heating hydraulic fluid heat radiating part, connected to a heat radiation hydraulic fluid reservoir that forms a gas phase on the liquid phase, installed at a height position equivalent to the heating hydraulic fluid reservoir, through a heat radiation hydraulic fluid riser pipe, Furthermore, the liquid phase part of the heat dissipation hydraulic fluid reservoir is connected to the hydraulic fluid heating part via the heat dissipation hydraulic fluid downcomer, while the gas phase part of the heat dissipation hydraulic fluid reservoir is connected via the vapor phase part and the steam pipe of the heating hydraulic fluid reservoir. A bubble circulation drive type heat pipe device.   2. The bubble circulation drive according to claim 1, wherein a gas phase capable of receiving the generated steam is provided on the liquid phase of the hydraulic fluid heating section, and a lower end opening of the heating hydraulic fluid riser is directly below the vapor phase. Type heat pipe device.

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