WO2020225981A1 - Dispositif de refroidissement de tube caloporteur à vibration auto-induite, et véhicule ferroviaire sur lequel le dispositif de refroidissement est monté - Google Patents

Dispositif de refroidissement de tube caloporteur à vibration auto-induite, et véhicule ferroviaire sur lequel le dispositif de refroidissement est monté Download PDF

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Publication number
WO2020225981A1
WO2020225981A1 PCT/JP2020/011670 JP2020011670W WO2020225981A1 WO 2020225981 A1 WO2020225981 A1 WO 2020225981A1 JP 2020011670 W JP2020011670 W JP 2020011670W WO 2020225981 A1 WO2020225981 A1 WO 2020225981A1
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Prior art keywords
heat pipe
self
heat
cooling device
excited
Prior art date
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PCT/JP2020/011670
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English (en)
Japanese (ja)
Inventor
遠藤　和広
陽介 安田
史花 鍋島
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株式会社日立製作所
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Application filed by 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to JP2021518312A priority Critical patent/JP7179170B2/ja
Priority to CN202080029866.9A priority patent/CN113710982B/zh
Publication of WO2020225981A1 publication Critical patent/WO2020225981A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/10—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by imparting a pulsating motion to the flow, e.g. by sonic vibration
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/42—Fillings or auxiliary members in containers or encapsulations selected or arranged to facilitate heating or cooling
    • H01L23/427—Cooling by change of state, e.g. use of heat pipes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating

Definitions

  • the present invention relates to a cooling device using a self-excited oscillating heat pipe, and is suitable as a cooling device mounted on a railroad vehicle.
  • Non-Patent Document 1 describes that one narrow flow path is reciprocated many times between the heating part and the cooling part, and this flow path is exhausted to a vacuum to evaporate. By enclosing about half the volume of the flow path, a liquid slag and a steam plug are formed due to the surface tension effect, and the liquid slag vibrates self-excited as the amount of heat increases, from the heating part to the cooling part. It is described as transporting heat.
  • Non-Patent Document 2 evaluates the influence of the initial gas-liquid distribution on the starting characteristics by calculation using the internal flow model. In order for the self-excited oscillating heat pipe to start, it is necessary that there is a difference in the void ratio of each turn in the initial state, or that liquid slag exists in the heating part and the driving force due to boiling is obtained. Says.
  • Patent Document 1 has a structure in which a plurality of power semiconductor elements are arranged on one surface of a heat receiving member and a heat radiating portion composed of a self-excited vibration heat pipe is provided on the opposite surface of the heat receiving member. A self-oscillation heat pipe cooler is shown.
  • Non-Patent Document 2 shows that, for example, when the liquid slag and the vapor plug are evenly distributed in each turn, the vapor plug that works on both ends of the liquid slag even if the heating part is heated. The pressures are the same, indicating that the liquid slag does not move and self-excited vibration does not occur.
  • Patent Document 1 does not disclose a configuration that generates self-excited vibration when the initial distribution of liquid slag or vapor plug is uniform.
  • An object of the present invention is to provide a self-excited vibration heat pipe cooling device that generates self-excited vibration and has excellent startability even when the initial distribution of liquid slag or vapor plug in the heat pipe is uniform. And.
  • a heat receiving part and a heat radiating part formed by forming a corrugated shape by communicating a pipe that encloses and seals a working fluid in a rectangular wave shape in the thickness direction.
  • a heat pipe having a structure in which the heat receiving portions are alternately arranged, a heat receiving member joined to the heat receiving portion, and a heating element arranged on the surface of the heat receiving member opposite to the surface to which the heat receiving portion is joined are provided.
  • At least one of the configuration of the heat radiating portion, the configuration of the heat receiving portion, and the configuration of the heat receiving member is changed to make the temperature distribution of the heat receiving portion with respect to the longitudinal direction of the heat pipe asymmetric with respect to the central portion in the longitudinal direction. It is characterized by generating self-excited vibration.
  • a self-excited vibration heat pipe cooling device capable of generating self-excited vibration and having excellent startability even when the initial distribution of liquid slag and vapor plug in the heat pipe is uniform. Can be provided.
  • FIG. 1 It is a side view which shows the structure of the self-excited oscillating heat pipe cooling apparatus which concerns on Example 1 of this invention. It is a figure which shows an example of the flow path structure of the self-excited oscillating heat pipe cooling apparatus adopted in the Example which concerns on this invention. It is a figure which shows another example of the flow path structure of the self-excited oscillating heat pipe cooling apparatus adopted in the Example which concerns on this invention. It is a figure which shows the cross-sectional structure of the self-excited oscillating heat pipe shown in FIG. 2 or FIG. It is a schematic diagram of the self-excited oscillating heat pipe used for the calculation, and the figure which shows the initial gas-liquid distribution.
  • FIG. 1 is a side view showing the structure of the self-excited oscillating heat pipe cooling device 100 according to the first embodiment of the present invention.
  • the self-excited vibration heat pipe cooling device 100 is composed of a heat pipe 12, a heat receiving member 10, and a heating element 11 that vibrate by self-excitation.
  • the heating element 11 is asymmetrically arranged with respect to the central portion of the heat pipe 12 in the longitudinal direction. Further, as the material of the heat pipe 12 and the heat receiving member 10, a metal such as an aluminum alloy or copper having good thermal conductivity is used.
  • the heat pipe 12 that vibrates by itself has a shape that is bent into a U shape a plurality of times at equal intervals in the longitudinal direction thereof.
  • One end of a plurality of U-shaped bent portions of the heat pipe 12 is joined to one surface of the heat receiving member 10 by brazing or the like, and a plurality of heat receiving portions 9 are formed on the heat pipe 12 at equal intervals.
  • a plurality of equidistant portions of the heat pipe 12 other than the heat receiving portions 9 form heat radiating portions 20 that exchange heat with air 101 or 102 (indicating wind in both directions with respect to the paper surface).
  • fins 13 are fixed between the bent heat pipes 12 by brazing or the like to form a heat radiating portion together with the heat pipes 12.
  • the heating element 11 is arranged on a surface opposite to the surface of the heat receiving member 10 to which the heat receiving portion 9 of the heat pipe 12 is joined.
  • the arrangement position of the heating element 11 is a position asymmetrical with respect to the central portion in the longitudinal direction of the heat pipe 12, and is closer to one end portion 3 side. At that position, the heating element 11 is fixed by a screw or the like (not shown) via a member (not shown) such as grease.
  • the heating element 11 is a power module including a power semiconductor element such as an IGBT or a MOS-FET, for example.
  • FIG. 2 and 3 are diagrams showing an example of the flow path structure of the self-excited oscillating heat pipe adopted in the examples described later in the present invention.
  • FIG. 4 is a diagram showing, for example, the AA cross section of FIG. 2 as a cross-sectional structure of the self-excited oscillating heat pipe shown in FIG. 2 or FIG.
  • the self-excited oscillating heat pipe 12 shown in FIGS. 2 and 3 is composed of a multi-hole flat pipe. As the structure, for example, as shown in FIG. 2, it is arranged in parallel and parallel, and each row is composed of a plurality of flow paths that do not communicate with each other, and as shown in FIG. 3, it is composed of a meandering flow path. May be done. Further, the pipe constituting the self-excited oscillating heat pipe adopted in the present invention is not limited to the above-mentioned multi-hole flat pipe, and is composed of a single circular pipe, for example, as shown in FIG. May be good.
  • a partition 2 is provided between adjacent flow paths 1, the flow path diameter and the width of the partition (between flow paths pitch) are on the order of mm, and the flow path length is sufficient as compared with the flow path diameter. To long.
  • the thickness of the self-excited oscillating heat pipe 12 is set to about mm order from the viewpoint of thermal conductivity and ease of processing.
  • a working fluid (not shown) in an amount of half the volume of the flow path is sealed in the closed flow path 1.
  • a plurality of straight-shaped multi-hole flat pipes having the same length are arranged in parallel in the thickness direction without using a bending process for the multi-hole flat pipe. It may be configured by installing.
  • both ends of the multi-hole flat pipes installed in parallel in the thickness direction of a plurality of pipes are fixed by using a member such as an end sealing member having slits on the multi-hole flat pipe side, and the slits are used.
  • the hydraulic fluid can be moved by alternately communicating the ends of the adjacent multi-hole flat pipes at both ends of the multi-hole flat pipe. In this way, it is possible to form a self-excited oscillating heat pipe having a closed flow path in which the flow path is formed in a rectangular wave shape (alternately folded and extends along the longitudinal direction of the multi-hole flat tube).
  • 5 to 8 are diagrams showing calculation results related to the startability of the self-excited oscillating heat pipe according to the present invention.
  • the calculation model used for the calculation is based on Non-Patent Document 3.
  • FIG. 5 is a schematic diagram of the self-excited oscillating heat pipe used in the calculation and a diagram showing the initial gas-liquid distribution.
  • the self-excited vibration heat pipe used in the calculation is a copper pipe having an inner diameter of 1.0 mm and an outer diameter of 1.6 mm, and has a length of one turn (the length of the heat pipe between adjacent U-shaped bent portions of the heat pipe). The distance in the direction) is 240 mm, and the number of turns is 10.
  • the heat receiving part is 8 mm
  • the heat radiating part is 204 mm
  • the others are heat insulating parts.
  • both ends of the heat pipe are provided with portions extended by 50 mm to form a steam chamber portion.
  • the calculations were performed in both cases with and without one-sided insulation.
  • the cooling part at the right end of the heat pipe is heat-insulated by 13 mm (the part with hatching in FIG. 5).
  • R1336mzz (Z) was used as the working fluid to be sealed in the heat pipe, and the filling rate was set to 0.5.
  • R1336mzz (Z) corresponds to a refrigerant number indicating a refrigerant based on the standard, and is one of the new refrigerants.
  • the cooling temperature of the heat radiating part was 20 ° C.
  • the heat transfer coefficient was given a value corresponding to the heat transfer coefficient outside the tube at a wind speed of 4 m / sec.
  • the initial vapor plug had a liquid film having a thickness of 5 ⁇ m all around the plug.
  • the initial temperature of the heat pipe was the same as the cooling temperature, and heating was started at a time of 0 sec.
  • FIG. 6 is a diagram showing the time change of gas-liquid distribution with and without one-sided heat insulation shown in (a) and with one-sided heat insulation shown in (b).
  • the vertical axis of the figure is the distance from the origin of the heat pipe (the left end excluding the steam chamber portion), and the horizontal axis of the figure is the time after the start of heating.
  • the black part represents the liquid slag and the white part represents the vapor plug.
  • vibration does not occur without the one-sided heat insulation shown in (a), and vibration occurs in the vicinity of time 16 sec with the one-sided heat insulation shown in (b).
  • FIG. 7 is a diagram showing the results of calculating the temperature distribution of the heat receiving portion at the start of self-excited vibration (around 16 sec) with and without one-sided heat insulation shown in (a) and with one-sided heat insulation shown in (b). Without the one-sided heat insulation shown in (a), the temperature distribution of the heat receiving part is uniform, but with the one-sided heat insulation shown in (b), the temperature of the heat receiving part at the right end is higher than the temperature of the heat receiving part of the other part. It has become.
  • FIG. 8 is a diagram showing the calculation results of the time change up to 20 sec as the fifth and sixth liquid slag displacements from the left side of the central portion of the heat pipe.
  • the displacement of the fifth liquid slag is -1 mm and the displacement of the sixth liquid slag is +1 mm.
  • the first steam plug on the left end and the eleventh steam plug on the right end have the same original volume as other steam plugs, even if the mass of the steam plug increases due to liquid film evaporation. Larger than other steam plugs. Therefore, the pressure rise is small, and the liquid slag moves from the center of the heat pipe to both ends due to the pressure difference acting on both ends of the liquid slag.
  • the liquid slag repeats positive and negative displacements of about 3 mm twice, and then vibrates while gradually increasing the amplitude with negative displacements from the time 12.7 sec. Then, after a time of 15.7 sec, it vibrates with a large amplitude of 5 mm or more.
  • the vapor plug moves with the displacement of the liquid slag, and in the vapor plug, evaporation and condensation are performed in the liquid film due to the temperature difference from the wall temperature.
  • the mass of the steam plug increases or decreases, and the pressure of the steam plug rises and falls accordingly.
  • the vibration after the liquid slag time of 15.7 sec starts when the fluctuation of the pressure difference acting on both ends of the liquid slag becomes large.
  • the mechanism of starting self-excited vibration by one-sided heat insulation is summarized.
  • the liquid slag moves in the same direction after heating, and the displacements of the liquid slag are aligned in one direction. Due to this movement of the liquid slag, the vapor plug evaporates and condenses in the liquid film due to the temperature difference from the tube wall. As a result, the mass of the steam plug increases or decreases, and the pressure rises and falls accordingly. Therefore, the pressure difference acting on both ends of the liquid slag fluctuates, and minute vibration is generated.
  • the displacements of the liquid slags are aligned in one direction, so the movements of the liquid slags do not cancel each other out and develop into large vibrations.
  • the displacement of the liquid slag is small at the center of the heat pipe, which easily vibrates, and the directions are opposite, so the generated minute vibrations cancel each other out and do not develop into large vibrations.
  • the present invention is an application of the above calculation results. That is, in the self-excited vibration heat pipe cooling device according to the present invention, as shown in FIG. 7B, the temperature distribution of the heat receiving portion with respect to the longitudinal direction of the heat pipe is higher at one end than at the other end. That is, by having a characteristic of being asymmetric with respect to the central portion in the longitudinal direction of the heat pipe, excellent startability is exhibited.
  • the heating element 11 is mounted in the longitudinal direction of the heat pipe 12 in order to have a characteristic that the temperature distribution of the heat receiving portion with respect to the longitudinal direction of the heat pipe is asymmetric with respect to the central portion in the longitudinal direction of the heat pipe 12. It is arranged asymmetrically with respect to the central part of.
  • the flow resistance of the turn portion at the end of the flat tube is large, and it is difficult for the working fluid to move at the end of the flat tube. Therefore, the vibration of the liquid slag is caused by the turn of the end of the flat tube. It mainly occurs in the part excluding the part.
  • the first embodiment has a characteristic that the temperature distribution of the heat receiving portion with respect to the longitudinal direction of the heat pipe is asymmetric with respect to the central portion in the longitudinal direction of the heat pipe, as in the case of the circular pipe and the plurality of flow paths.
  • Examples 2 to 5 of the present invention will be shown. At that time, in Examples 2 to 5, the parts different from those in the first embodiment will be described, and the description of the parts overlapping with the first embodiment will be omitted.
  • FIG. 9 is a side view showing the structure of the self-excited oscillating heat pipe cooling device 100a according to the second embodiment of the present invention.
  • a plurality of heating elements 11a are arranged asymmetrically with respect to the central portion in the longitudinal direction of the heat pipe 12.
  • FIG. 9 shows a case where two heating elements 11a are arranged.
  • the temperature distribution of the heat receiving portion 9 with respect to the longitudinal direction of the heat pipe is high at one end and with respect to the central portion in the longitudinal direction of the heat pipe 12. Since it has the characteristic of being asymmetrical, self-excited vibration is generated and it is excellent in startability.
  • FIG. 10 is a side view showing the structure of the self-excited oscillating heat pipe cooling device 100b according to the third embodiment of the present invention.
  • the self-excited oscillating heat pipe cooling device 100b according to the third embodiment has a smaller number of fins 13a closest to one end 3 in the longitudinal direction of the heat pipe 12. As a result, heat dissipation at one end is suppressed and the temperature at one end rises.
  • the temperature distribution of the heat receiving portion 9 with respect to the longitudinal direction of the heat pipe has a characteristic of being asymmetrical with respect to the central portion of the heat pipe 12 in the longitudinal direction, so that self-excited vibration occurs. Excellent startability.
  • FIG. 11 is a side view showing the structure of the self-excited oscillating heat pipe cooling device 100c according to the fourth embodiment of the present invention.
  • the self-excited oscillating heat pipe cooling device 100c according to the fourth embodiment is provided with a heat insulating member 14 in a part of the heat radiating portion 20 of the heat pap 12 closest to one end 3 in the longitudinal direction of the heat pipe 12. As a result, heat dissipation at one end is suppressed and the temperature at one end rises.
  • the method for providing the heat insulating member 14 in a part of the heat radiating portion 20 is not limited.
  • a method of attaching the heat insulating member 14 to a part of the heat radiating portion 20 is used.
  • the temperature distribution of the heat receiving portion 9 with respect to the longitudinal direction of the heat pipe has a characteristic of being asymmetrical with respect to the central portion of the heat pipe 12 in the longitudinal direction, self-excited vibration occurs. Excellent startability.
  • FIG. 12 is a side view showing the structure of the self-excited oscillating heat pipe cooling device 100d according to the fifth embodiment of the present invention.
  • the length of the end portion of the heat receiving member 10a on the one end portion 3 side of the heat pipe 12 is shortened, and both ends of the heat pipe 12 in the longitudinal direction are respectively shortened.
  • the lengths of both ends of the heat receiving member 10a corresponding to the above are different. As a result, the thermal resistance at one end increases and the temperature at one end rises.
  • the temperature distribution of the heat receiving portion 9 with respect to the longitudinal direction of the heat pipe has a characteristic of being asymmetrical with respect to the central portion of the heat pipe 12 in the longitudinal direction, self-excited vibration occurs. Excellent startability.
  • FIG. 13 is a side view showing the structure of the self-excited oscillating heat pipe cooling device 100e according to the sixth embodiment of the present invention.
  • the area of the heat receiving portion located at one end 3 in the longitudinal direction of the heat pipe 12 is made wider than that of the other heat receiving portions. As a result, the amount of heat received at one end increases and the temperature rises.
  • the method for increasing the area of the heat receiving portion described above is not limited.
  • the heat receiving portion 9b of one end portion 3 in the longitudinal direction of the heat pipe 12 is joined to the heat receiving portion 10b provided on the heat receiving member 10 by brazing or the like to receive heat of the one end portion 3.
  • the area is increasing.
  • the temperature distribution of the heat receiving portion 9 with respect to the longitudinal direction of the heat pipe has a characteristic of being asymmetrical with respect to the central portion of the heat pipe 12 in the longitudinal direction, self-excited vibration occurs. Excellent startability.
  • the self-excited vibration heat pipe cooling devices 100, 100a, 100b, 100c, 100d and 100e described as Examples 1 to 6 are power modules for driving mounted on a railway vehicle (power semiconductors such as IGBTs and MOS-FETs). It is suitable for cooling power modules equipped with elements.
  • self-excited oscillating heat pipe cooling devices 100, 100a to 100e, in which this power module is mounted on a heat receiving member 10 as a heating element 11, are mounted under the floor of a railroad vehicle.
  • this power module is mounted on a heat receiving member 10 as a heating element 11
  • this power module is mounted on a heat receiving member 10 as a heating element 11

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Abstract

La présente invention a pour but de pourvoir à un dispositif de refroidissement d'un tube caloporteur, à vibration auto-induite, dans lequel une vibration auto-induite est produite même lorsque la distribution initiale de scories liquides et de bouchons de vapeur dans le tube caloporteur est uniforme, permettant ainsi d'obtenir une excellente aptitude au démarrage. À cet effet, la présente invention concerne un dispositif de refroidissement d'un tube caloporteur, à vibration auto-induite, le dispositif comprenant : un tube caloporteur présentant une structure comportant des parties de réception de la chaleur et des parties de dissipation de la chaleur disposées en alternance, le tube caloporteur étant formé par la communication, dans le sens de l'épaisseur sous forme ondulée rectangulaire, de tubes conçus pour renfermer un fluide actif et rendus étanches, de façon à former un profil ondulé ; un élément de réception de la chaleur relié aux parties de réception de la chaleur ; et un corps chauffant disposé sur la surface de l'élément de réception de la chaleur du côté opposé à la surface à laquelle les parties de réception de la chaleur sont reliées. La disposition du corps chauffant, et/ou la configuration des parties de dissipation de la chaleur, et/ou la configuration des parties de réception de la chaleur et/ou la configuration de l'élément de réception de la chaleur sont modifiées, et la répartition de la température des parties de réception de la chaleur, par rapport à la direction longitudinale du tube caloporteur, est rendue asymétrique autour de la partie centrale par rapport à la direction longitudinale, ce qui permet de produire une vibration auto-induite.
PCT/JP2020/011670 2019-05-08 2020-03-17 Dispositif de refroidissement de tube caloporteur à vibration auto-induite, et véhicule ferroviaire sur lequel le dispositif de refroidissement est monté WO2020225981A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2021518312A JP7179170B2 (ja) 2019-05-08 2020-03-17 自励振動ヒートパイプ冷却装置および当該冷却装置を搭載した鉄道車両
CN202080029866.9A CN113710982B (zh) 2019-05-08 2020-03-17 自激振荡热管冷却装置和搭载有该冷却装置的铁道车辆

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JP2019088067 2019-05-08
JP2019-088067 2019-05-08

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WO2020225981A1 true WO2020225981A1 (fr) 2020-11-12

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JP (1) JP7179170B2 (fr)
CN (1) CN113710982B (fr)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4266847A4 (fr) * 2021-01-08 2024-06-26 Huawei Technologies Co., Ltd. Radiateur et dispositif de communication

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