Thermosyphon and bus stop bench having thermosyphon

Abstract

The present invention provides a thermosyphon and a bus stop bench having the thermosyphon, the thermosyphon consisting of: an evaporation unit that absorbs external heat to phase-change a fluid accommodated therein from liquid to gas; and a condensation unit that is connected to the upper side of the evaporation unit and dissipates heat to the outside to phase-change the fluid accommodated therein from gas to liquid, wherein the evaporation unit and the condensation unit are formed to have different diameters, thereby increasing heat transfer coefficient and reducing flow resistance compared to existing thermosyphons in which an evaporation unit and a condensation unit are formed to have the same diameter, thus improving performance of the thermosyphon.

Description

Thermosiphon and bus stop bench equipped with the thermosiphon

[0001] The present invention relates to a thermosiphon and a bus stop bench equipped with said thermosiphon, and more specifically, to a thermosiphon and a bus stop bench equipped with said thermosiphon, comprising an evaporator that receives heat from the outside and changes the phase of a liquid contained inside into a gas, and a condenser that dissipates heat from the fluid to the outside and changes the phase of a gas contained inside into a liquid.

[0002] In general, thermosiphon heat exchangers are widely used in waste heat recovery systems in factories and in cooling devices for computer microcontrollers.

[0003] A thermosiphon heat exchanger transfers heat from the evaporator to the condenser by utilizing the pressure difference resulting from thermodynamic evaporation and condensation and gravity within sealed pipes, without using separate power sources such as pumps, thereby allowing the refrigerant to circulate continuously from the evaporator to the condenser.

[0004] The heat exchange pipes used in conventional thermosiphon heat exchangers have a condenser and an evaporator, and a connecting section that connects the condenser and the evaporator.

[0005] In the aforementioned conventional heat exchange pipe, when heat is applied to the evaporator, the working fluid evaporates in the evaporator, and due to the difference in vapor pressure, the steam passes through the connection and moves to the condenser.

[0006] The transported steam condenses in the condenser, and the latent heat of condensation escapes to the outside. The condensed fluid flows down through the inner wall of the metal pipe by gravity, passes through the connection, and returns to the evaporator, where heat exchange takes place.

[0007] And generally, chairs are installed at bus stops so that people can sit comfortably while waiting for the bus.

[0008] However, conventional chairs had a problem in that they could not perform their intended function during the winter season because people were reluctant to sit on them due to the cold seat.

[0009] For this reason, conventional bus stop benches were provided that included an electric heater using electricity to heat the seating area for waiting passengers.

[0010] For prior art, refer to Registered Patent No. 10-2184089 (2020.11.23).

[0011] The present invention aims to provide a thermosiphon with improved performance and a bus stop bench equipped with said thermosiphon by forming the diameters of an evaporator that changes the phase of a liquid contained inside into a gas by receiving heat from the outside and a condenser that changes the phase of a gas contained inside into a liquid by dissipating heat from the fluid to the outside differently.

[0012] The thermosiphon according to the present invention is divided into an evaporator that absorbs external heat to change the phase of a fluid contained therein from liquid to gas; and a condenser that is connected to the upper side of the evaporator and dissipates heat to the outside to change the phase of a fluid contained therein from gas to liquid, and it is preferable that the evaporator and the condenser are formed with different diameters.

[0013] At this time, the evaporator according to the present invention may be formed with a diameter relatively smaller than that of the condenser.

[0014] In addition, the connection portion of the evaporator and condenser according to the present invention can form a connection portion having a diameter that is wider at the top and narrower at the bottom.

[0015] A bus stop bench equipped with a thermosiphon according to the present invention comprises: a bench body installed on one side of a bus stop; and a thermosiphon in which a condenser is connected to the bench body and an evaporator is buried underground to supply geothermal heat to the bench body.

[0016] At this time, the thermosiphon according to the present invention is divided into an evaporator that absorbs external heat to change the phase of the fluid contained therein from liquid to gas, and a condenser that is connected to the upper side of the evaporator and dissipates heat to the outside to change the phase of the fluid contained therein from gas to liquid, and it is preferable that the evaporator and the condenser are formed with different diameters.

[0017] Here, it is preferable that the evaporator according to the present invention is formed with a diameter relatively smaller than that of the condenser.

[0018] And the connection portion of the evaporator and condenser according to the present invention forms a connection portion having a diameter that is wider at the top and narrower at the bottom.

[0019] The bench body according to the present invention can be heated by geothermal heat conducted through the thermosiphon to maintain a temperature relatively higher than the ambient temperature, or the bench body can be cooled by geothermal heat conducted through the thermosiphon to maintain a temperature relatively lower than the ambient temperature.

[0020] The effects produced by the thermosiphon according to the present invention and the bus stop bench equipped with the thermosiphon are as follows.

[0021] If the diameter of the evaporator becomes smaller than before, the confinement number increases and the liquid pool mixing effect increases, which in turn increases the heat transfer coefficient of the evaporator and reduces the flow resistance of the hot gas, resulting in improved performance of the thermosiphon.

[0022] In addition, if the diameter of the condensation section increases compared to the existing one, the liquid film thickness on the inner wall of the condensation section increases, thereby increasing the heat transfer coefficient of the condensation section, and the condensation area inside the thermosiphon increases, and the heat transfer area inside the condensation section increases, thus improving the performance of the condensation section.

[0023] The performance of the thermosiphon is improved by increasing the heat transfer coefficient and reducing flow resistance compared to conventional thermosiphons in which the evaporator and condenser sections are formed with the same diameter.

[0024] FIG. 1 is an exemplary diagram showing a thermosiphon according to an embodiment of the present invention.

[0025] FIG. 2 is an exemplary diagram showing a bus stop bench equipped with a thermosiphon according to an embodiment of the present invention.

[0026] The present invention relates to a thermosiphon containing a fluid that undergoes a phase change according to an external temperature inside a hollow cylinder, wherein the thermosiphon is divided into an evaporator that absorbs external heat to change the phase of the fluid contained inside from liquid to gas, and a condenser that is connected to the upper side of the evaporator and dissipates heat to the outside to change the phase of the fluid contained inside from gas to liquid, and wherein the evaporator and the condenser are formed with different diameters.

[0027] The present invention provides a bus stop bench comprising a bench body installed on one side of a bus stop, and a thermosiphon in which a condenser is connected to the bench body and an evaporator is buried underground to supply geothermal heat to the bench body.

[0028]

[0029] Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention.

[0030] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention; thus, it should be understood that there may be equivalent variations that can replace them at the time of filing this application.

[0031] The present invention relates to a thermosiphon and a bus stop bench equipped with said thermosiphon, wherein the diameters of an evaporator that changes the phase of a liquid contained inside into a gas by receiving heat from the outside and a condenser that changes the phase of a gas contained inside into a liquid by dissipating heat from the fluid to the outside are formed differently, thereby improving the performance of the thermosiphon. Referring to the drawings, the following is an explanation.

[0032] A thermosiphon (100) according to an embodiment of the present invention with reference to FIG. 1 accommodates a fluid that undergoes a phase change according to the external temperature inside a hollow cylinder (101).

[0033] At this time, the fluid contained inside the cylinder (101) is filled to 30 to 40% of the internal volume of the cylinder (101), and the upper and lower surfaces of the cylinder (101) are sealed from the outside so that leakage of the fluid contained inside does not occur.

[0034] The above cylinder (101) has a length in a vertical line in the vertical direction, and the thermosiphon (100) also operates in a vertically upright state.

[0035] The above cylinder (101) is divided into an evaporation section (110) and a condensation section (120). The evaporation section (110) is located at the lower end of the length of the cylinder (101) and absorbs external heat to change the phase of the fluid contained inside from liquid to gas.

[0036] At this time, the fluid that has undergone a phase change from liquid to gas moves upward along the length from the center of the cylinder (101).

[0037] And the condenser (120) is connected to the upper side of the evaporator (110) and is located on the upper side of the length of the cylinder (101), and dissipates heat to the outside to change the phase of the fluid contained inside from gas to liquid.

[0038] At this time, the fluid that has undergone a phase change from gas to liquid moves downward by gravity along the inner surface of the cylinder (101).

[0039] Therefore, heat is transferred from the evaporation section (110) to the condensation section (120) through the evaporation (boiling) and condensation of the fluid contained inside the cylinder (101).

[0040] Here, the evaporation section (110) and the condensation section (120) of the thermosiphon (100) according to an embodiment of the present invention are formed with different diameters.

[0041] Preferably, the evaporator (110) is formed with a diameter relatively smaller than that of the condenser (120), and the connection portion between the evaporator (110) and the condenser (120) forms a connection portion (130) in which the diameter is wider at the top and narrower at the bottom.

[0042] Accordingly, the thermosiphon (100) according to the embodiment of the present invention improves the performance of the thermosiphon by increasing the heat transfer coefficient and reducing the flow resistance by varying the diameters of the evaporation section (110) and the condensation section (120).

[0043] If the diameter of the evaporator (110) is formed to be relatively smaller than the diameter of the condenser (120), the flow resistance of the hot gas in the evaporator is reduced.

[0044] In addition, if the diameter of the evaporator (110) is formed to be relatively smaller than the diameter of the condenser (120), the liquid pool mixing effect inside the evaporator (110) is increased, thereby increasing the heat transfer coefficient.

[0045] In addition, the condensation section (120) according to an embodiment of the present invention may be formed with a relatively larger diameter than the evaporation section (110).

[0046] In this case, when the fluid moves inside the condensation unit (120), the liquid film thickness can be increased to increase the heat transfer coefficient, and the condensation and heat transfer area inside and outside the thermosiphon can be increased.

[0047] In addition, the performance of the thermosiphon can be improved by making the diameter of the evaporator (110) smaller than the existing one and making the diameter of the condenser (120) larger than the existing one.

[0048] In this case, if the diameter of the evaporator (110) becomes smaller than the existing one, the confinement number increases, and the liquid pool mixing effect increases, thereby increasing the heat transfer coefficient of the evaporator (110).

[0049] In addition, if the diameter of the evaporator (110) is reduced compared to the conventional one, the flow resistance of the hot gas is reduced, and as a result, the performance of the thermosiphon is improved.

[0050] And if the diameter of the condensation section (120) becomes larger than the existing one, the liquid film thickness on the inner wall surface of the condensation section (120) increases, and the heat transfer coefficient of the condensation section (120) increases.

[0051] And if the diameter of the above-mentioned condensation section (120) becomes larger than the existing one, the condensation area inside the thermosiphon increases, and the heat transfer area inside the condensation section (120) increases, thereby improving the performance of the condensation section (120).

[0052] Accordingly, the thermosiphon according to the embodiment of the present invention has an improved heat transfer coefficient and reduced flow resistance compared to a conventional thermosiphon in which the evaporation section and the condensation section are formed with the same diameter, thereby improving the performance of the thermosiphon.

[0053] A bus stop bench equipped with a thermosiphon according to an embodiment of the present invention with reference to FIG. 2 comprises a bench body (10) installed on one side of a bus stop, and the bench body (10) includes a seat (11) on which a passenger waiting at the bus stop sits and a support (not shown) that supports the seat (11) at a certain height.

[0054] Here, the pedestal (10) is connected to the condensation section (120) of the thermosiphon (100), and the evaporation section (110) opposite to the condensation section is buried underground.

[0055] At this time, the thermosiphon (100) according to an embodiment of the present invention accommodates a fluid that undergoes a phase change according to the external temperature inside a hollow cylinder (101).

[0056] Here, the fluid contained inside the cylinder (101) is filled to 30 to 40% of the internal volume of the cylinder (101), and the upper and lower surfaces of the cylinder (101) are sealed from the outside so that leakage of the fluid contained inside does not occur.

[0057] The above cylinder (101) has a length in a vertical line in the vertical direction, and the thermosiphon (100) also operates in a vertically upright state.

[0058] The above cylinder (101) is divided into an evaporation section (110) and a condensation section (120). The evaporation section (110) is located at the lower end of the length of the cylinder (101) and absorbs external heat to change the phase of the fluid contained inside from liquid to gas.

[0059] At this time, the fluid that has undergone a phase change from liquid to gas moves upward along the length from the center of the cylinder (101).

[0060] And the condenser (120) is connected to the upper side of the evaporator (110) and is located on the upper side of the length of the cylinder (101), and dissipates heat to the outside to change the phase of the fluid contained inside from gas to liquid.

[0061] At this time, the fluid that has undergone a phase change from gas to liquid moves downward by gravity along the inner surface of the cylinder (101).

[0062] Therefore, heat is transferred from the evaporation section (110) to the condensation section (120) through the evaporation (boiling) and condensation of the fluid contained inside the cylinder (101).

[0063] The evaporation section (110) and the condensation section (120) of the thermosiphon (100) according to an embodiment of the present invention are formed with different diameters.

[0064] Preferably, the evaporator (110) is formed with a diameter relatively smaller than that of the condenser (120), and the connection portion between the evaporator (110) and the condenser (120) forms a connection portion (130) in which the diameter is wider at the top and narrower at the bottom.

[0065] Accordingly, the thermosiphon (100) according to the embodiment of the present invention improves the performance of the thermosiphon by increasing the heat transfer coefficient and reducing the flow resistance by varying the diameters of the evaporation section (110) and the condensation section (120).

[0066] If the diameter of the evaporator (110) is formed to be relatively smaller than the diameter of the condenser (120), the flow resistance of the hot gas in the evaporator is reduced.

[0067] In addition, if the diameter of the evaporator (110) is formed to be relatively smaller than the diameter of the condenser (120), the liquid pool mixing effect inside the evaporator (110) is increased, thereby increasing the heat transfer coefficient.

[0068] Therefore, the condensation section (120) of the thermosiphon (100) forms the base (10), is directly connected to the base (10), or is connected to a copper material with excellent thermal conductivity (installed on the base (10), so that heat dissipation from the condensation section (120) is achieved through the base (10).

[0069] Therefore, geothermal heat is supplied to the base (11) of the bench body (10) through the thermosiphon (100), so that in autumn / winter when the ambient temperature is 15℃ or lower, the base (10) maintains a temperature relatively higher than the ambient temperature due to the geothermal heat, thereby providing warmth to the passenger sitting on the base (10).

[0070] In addition, geothermal heat is supplied to the base (11) of the bench body (10) through the thermosiphon (100), so that in spring / summer when the ambient temperature is 15℃ or higher, the base (10) maintains a temperature relatively lower than the ambient temperature due to the geothermal heat, thereby providing a cooling sensation to the passenger sitting on the base (10).

[0071] The present invention has been described with reference to embodiments illustrated in the drawings, but this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims.

Claims

1. A thermosiphon containing a fluid that undergoes a phase change according to the external temperature inside a hollow cylinder, An evaporator that absorbs external heat to change the phase of a fluid contained therein from liquid to gas; and It is divided into a condenser connected to the upper side of the above evaporator and dissipating heat to the outside to change the phase of the fluid contained therein from gas to liquid, and A thermosiphon characterized in that the above-mentioned evaporation section and condensation section are formed with different diameters.

2. In Claim 1, The above evaporation part A thermosiphon characterized by being formed with a diameter relatively smaller than that of the condensation section.

3. In Claim 2, The connection point between the above-mentioned evaporator and condenser is, A thermosiphon having a connecting portion with a diameter that is wider at the top and narrower at the bottom.

4. A bench body installed on one side of a bus stop; and A bus stop bench comprising a thermosiphon that supplies geothermal heat to the bench body, wherein the condensation unit is connected to the bench body and the evaporation unit is buried underground.

5. In Claim 4, The above thermosiphon is, An evaporator that absorbs external heat to change the phase of the fluid contained inside from liquid to gas, and It is divided into a condenser connected to the upper side of the above evaporator and dissipating heat to the outside to change the phase of the fluid contained therein from gas to liquid, and A bus stop bench characterized in that the above-mentioned evaporation and condensation sections are formed with different diameters.

6. In Claim 5, The above evaporation part A bus stop bench characterized by being formed with a diameter relatively smaller than that of the condensation section.

7. In Claim 6, The connection point between the above-mentioned evaporator and condenser is, A bus stop bench forming a connecting section with a diameter that is wider at the top and narrower at the bottom.

8. In Claim 4, The above bench body A bus stop bench heated by geothermal heat conducted through the above thermosiphon, maintaining a temperature relatively higher than the ambient temperature.

9. In Claim 4, The above bench body A bus stop bench that is cooled by geothermal heat conducted through the above thermosiphon and maintains a temperature relatively lower than the ambient temperature.

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