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KR-20260067623-A - Thermosyphon and bus stop bench with thermosyphon

KR20260067623AKR 20260067623 AKR20260067623 AKR 20260067623AKR-20260067623-A

Abstract

The present invention provides a thermosiphon and a bus stop bench equipped with the thermosiphon, wherein the thermosiphon 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 wherein the evaporator and the condenser are formed with different diameters, thereby improving the heat transfer coefficient and reducing flow resistance compared to a conventional thermosiphon in which the evaporator and the condenser are formed with the same diameter.

Inventors

  • 이정호
  • 강석경

Assignees

  • 아주대학교산학협력단

Dates

Publication Date
20260513
Application Date
20241106

Claims (9)

  1. In 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.

Description

Thermosyphon and bus stop bench equipped with thermosyphon The present invention relates to a thermosiphon and a bus stop bench equipped with said thermosiphon, and more specifically, to a thermosiphon having 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, and a bus stop bench equipped with said thermosiphon. In general, thermosiphon heat exchangers are widely used in waste heat recovery systems in factories and in cooling devices for computer microcontrollers. 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 continuously circulate from the evaporator to the condenser. 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. 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. 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. And generally, chairs are installed at bus stops so that people can sit comfortably while waiting for the bus. 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. For this reason, conventional bus stop benches were provided that included an electric heater using electricity to heat the seating area for waiting passengers. For prior art, refer to Registered Patent No. 10-2184089 (2020.11.23). FIG. 1 is an exemplary diagram showing a thermosiphon according to an embodiment of the present invention. FIG. 2 is an exemplary diagram showing a bus stop bench equipped with a thermosiphon according to an embodiment of the present invention. 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. 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. 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. 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). 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. 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. 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. At this time, the fluid that has undergone a phase change from liquid to gas moves upward along the length from