WO2018189887A1 - Échangeur de chaleur du type à flot tombant - Google Patents

Échangeur de chaleur du type à flot tombant Download PDF

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Publication number
WO2018189887A1
WO2018189887A1 PCT/JP2017/015313 JP2017015313W WO2018189887A1 WO 2018189887 A1 WO2018189887 A1 WO 2018189887A1 JP 2017015313 W JP2017015313 W JP 2017015313W WO 2018189887 A1 WO2018189887 A1 WO 2018189887A1
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WO
WIPO (PCT)
Prior art keywords
heat exchange
transfer medium
heat transfer
heat
rectifier
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PCT/JP2017/015313
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English (en)
Japanese (ja)
Inventor
一男 中野
忠司 光安
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一男 中野
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Application filed by 一男 中野 filed Critical 一男 中野
Priority to JP2019512150A priority Critical patent/JP6892574B2/ja
Priority to PCT/JP2017/015313 priority patent/WO2018189887A1/fr
Publication of WO2018189887A1 publication Critical patent/WO2018189887A1/fr

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    • 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
    • F28D3/00—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 flows in a continuous film, or trickles freely, over the conduits
    • F28D3/02—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 flows in a continuous film, or trickles freely, over the conduits with tubular conduits

Definitions

  • the present invention relates to a heat exchange device (cooling device), and more particularly to a device that cools a high-temperature fluid by heat exchange with a refrigerant such as tap water while flowing down in a liquid film by its own weight.
  • a refrigerant such as tap water
  • Patent Document 4 includes a plurality of heat exchange tube rows that are arranged in a non-staggered manner in the vertical direction, and a cylindrical heat exchange group that operates in a falling liquid film evaporation system and includes a refrigerant spray nozzle.
  • Tubular heat exchangers have been proposed.
  • the apparatus is in fluid communication with a spray nozzle and includes a plurality of guide plates disposed at the refrigerant outlet in a refrigerant distribution system provided with a refrigerant outlet in the vicinity of the plurality of heat exchange rows. Is used to guide the refrigerant to the upper top of the heat exchange tube row, and all the refrigerant is used to wet the heat exchange tube, so that the wettability of the heat exchange tube and the efficiency of the heat exchanger are improved.
  • Patent Document 5 discloses a liquid film forming member capable of forming a uniform liquid film along the inner walls of a plurality of liquid flow pipes arranged in the vertical direction, and a liquid film equipped with the liquid film forming member.
  • a heat exchanger has been proposed. That is, the liquid film forming member attached to the upper end openings of the plurality of liquid flow pipes arranged with the axis line oriented in the vertical direction is formed in a cylindrical shape or a column shape, and the axis line extends from the outer circumference surface to the axis line.
  • An orthogonal support part protrudes in the circumferential direction and is fitted into the inner wall of the liquid flow down pipe, so that a flow path forming recess is formed in the direction perpendicular to the axial line spaced in the circumferential direction and at both ends in the axial direction.
  • the heat transfer tube which makes a liquid flow down on an outer peripheral surface and performs heat transfer is wound by the pancake shape, and the heat transfer tube wound by this pancake shape (spiral shape; spiral shape) is perpendicular
  • the heat transfer tube is divided into layers in the inner / outer layer direction and the vertical direction of the heat transfer tube, and the adjacent tube parts are partitioned by a rod or wire, and the liquid flows down to the outer peripheral surface of the heat transfer tube to generate heat.
  • An apparatus for performing movement has been proposed.
  • Such falling film heat exchangers are used in seawater desalination equipment, absorption refrigerators, chemical process equipment, and the like.
  • the beverage supply machine of Patent Document 1 connects a cooling device from the back surface of the inclined plate, and cools down the hot coffee by flowing down on the inclined plate.
  • a cooling device from the back surface of the inclined plate, and cools down the hot coffee by flowing down on the inclined plate.
  • an excessive apparatus is required.
  • the beverage supply device disclosed in Patent Document 2 requires a cooling pipe to be attached to the outer periphery of the outer cylinder and a cold storage material to be enclosed in the inner cylinder, which increases costs.
  • the beverage cooling device of Patent Document 3 requires constant cleaning because the beverage component adheres to the heat exchange pipe. However, the longer the pipe, the greater the effort and the sufficient cleaning. There is a risk that it will be out of reach.
  • chillers are used to cool liquids of 20-30 ° C. that are not too hot.
  • the falling film type heat exchange device represented by Patent Document 7 is converted into kinetic energy when the heat exchange fluid is dropped from potential energy to pressure energy and then dropped. Therefore, the pressure energy is high in front of the orifice entrance, which becomes the flow adjustment plate, and the flow path is restricted, so that surface tension (viscous resistance) and pressure loss energy are generated, but the kinetic energy is high and the orifice diameter is restricted.
  • the flow rate will be adjusted depending on the size.
  • Patent Document 4 Japanese Patent Application Laid-Open No. 2000-234878
  • a guide plate is provided below the storage tank.
  • the diameter of the orifice provided on the flow rate adjustment plate is one, dripping at an appropriate flow speed and flow rate can only be performed under certain conditions, and it may stay, and it may be difficult or impossible to use with the same device. There was a case. Further, the orifice having a single (single layer) structure needs to be removed from the apparatus every time clogging occurs to remove the clogging substance.
  • the falling film type heat exchange device allows the heat exchange fluid to flow down in the form of a liquid film along the outer surface of the heat transfer medium flow pipe, and the cross-flow partition type with the heat transfer medium flowing inside the flow pipe
  • heat exchange is performed, in a high-temperature heat exchange fluid, heat exchange is also performed in which heat energy generated from a dripping fluid and a fluid liquid film flowing down the heat exchange section is released by convective heat transfer.
  • the inside of the heat exchange unit and the heat exchange vessel is in contact with the surrounding atmosphere, but the atmosphere is natural convection, and there is little heat transfer and the heat exchange processing capacity is low.
  • a heat transfer medium distribution pipe is formed by arranging a plurality of horizontal straight pipes in a vertical direction at predetermined intervals and connecting both ends thereof with U-shaped bent pipes to form a loop shape.
  • the resistance increases in the path, the loss energy of the heat transfer medium is large, and the heat exchange capacity is also reduced because the flow velocity and pressure are reduced.
  • the number of processing and assembling steps increases and the cost increases.
  • the heat exchange part is formed of a straight pipe
  • the inner surface and the outer surface of the pipe wall are smooth, and the internal heat transfer medium becomes a laminar flow, so that a thick temperature boundary layer is formed near the pipe wall, There was a temperature difference between the pipe wall and the pipe center, which tended to reduce the heat exchange capacity. Therefore, in order to increase the heat exchange capability, a method of increasing the flow velocity by reducing the tube diameter can be considered, but this increases the film thickness of the heat exchange fluid flowing on the surface of the tube and decreases the heat exchange capability. .
  • the orifice is integrally formed at the bottom of the storage tank, if the liquid level of the heat exchange fluid is high, the pressure near the orifice increases due to the weight of the fluid and the loss due to the surface tension is large, but it is converted into large kinetic energy. Therefore, the dropping speed is also fast.
  • the liquid level is low, the pressure near the orifice is low and there is surface tension, resulting in small kinetic energy, so the dripping speed difference is large and the heat exchange treatment amount is also different.
  • a power source such as a pump is always required to continuously move the heat exchange fluid from the outside, and there is a risk of foreign matter entering from above.
  • the fluid only needs to be a liquid, but in the state of a gas such as steam or air, heat moves to the atmosphere, and most of the heat exchange fluid does not exchange heat downward.
  • the present invention is not only capable of cooling a high-temperature fluid in a very short time while having a simple structure, but also cleaning a portion to which a heat exchange fluid is attached. It is another object of the present invention to provide a falling liquid film type cooling device that can be carried out easily and reliably.
  • the falling film heat exchanger of the present invention is provided with a bottomed cylindrical rectifier whose upper side is open to the atmosphere, a plurality of orifices formed in a loop shape on the horizontal surface of the rectifier bottom, and the rectifier. It consists of a heat transfer medium flow tube and a heat exchange container that houses the heat transfer medium flow tube, and the heat exchange fluid is distributed and dropped from the orifice to be distributed in the form of a liquid film along the outer surface of the heat transfer medium flow tube.
  • the first is that the orifice is provided with a funnel-shaped taper.
  • a rectifier a flow rate adjusting section of the laminated structure composed of a flow regulating plate having the top of the rectifier, a funnel-shaped orifice provided in the flow rate adjusting plate, the through hole diameter of the rectifier larger cities than the orifice, the through-holes The pitch between them is the same, and the holes of the flow rate adjusting plate and the through holes of the rectifier are provided at positions where communication holes can be formed by relative movement, and the flow rate can be changed by replacing the flow rate adjusting plate with a different orifice diameter.
  • the second feature is that it can be adjusted.
  • a cylindrical exhaust duct that is provided to extend upward from the bottom of the rectifier and has an open top, and an intake port that is provided on the side opposite to the exhaust port provided on the side of the heat exchange vessel, or on the side of the rectifier. It has a ventilation path and an exhaust port provided on the side of the heat exchange container and an intake port provided on the opposite side, and a heat dissipation path through which the air is sucked from the lower intake hole and rises and is discharged from the exhaust duct and exhaust port.
  • the third feature is that the heat of vaporization generated and flown down in the heat exchange vessel is exchanged by forced convection heat transfer.
  • the heat transfer medium flow pipe includes a heat exchange part in which a plurality of loops bent in a round shape or an ellipse are spirally formed at predetermined intervals in the vertical direction, a water injection part for injecting the heat transfer medium, and a heat transfer part. It consists of a drainage part that discharges the heat medium, and the heat exchange part is formed in a corrugated and spiral shape with the inner and outer surfaces of the tube wall extending in the axial direction, and exchanges heat with the heat transfer medium by the rotational movement of the heat transfer medium
  • a fourth feature is that the fluid is formed in a flow path in which a heat transfer medium is injected from below and discharged upward while alternately performing countercurrent and cocurrent heat exchange, and countercurrent heat exchange is performed.
  • a bottomed cylindrical heat exchange fluid storage tank whose upper side is open to the atmosphere is disposed at the upper part of the rectifier, and an inner cylinder pipe provided to extend upward from the bottom of the storage tank,
  • an inner cylinder pipe provided to extend upward from the bottom of the storage tank
  • a tubular heat-exchange fluid storage tank with a sealed top is arranged at the top of the rectifier, and the liquid level pipe provided extending downward from the bottom of the storage tank allows the liquid level of the rectifier to be liquid.
  • Liquid level adjuster that starts supplying when it is below the level pipe, stops supplying when it reaches the upper surface position of the hole of the liquid level pipe, and maintains a constant liquid level by supplying the amount reduced by the siphon effect
  • a sixth feature is that the heat exchange device is stacked in a plurality of stages in the vertical direction and the heat exchange fluid is continuously heat-exchanged a plurality of times.
  • the falling liquid film type cooling device of the present invention comprises a bottomed cylindrical rectifier whose upper side is open to the atmosphere, a plurality of orifices formed in a loop on the horizontal surface of the bottom of the rectifier, and a transmission provided below the rectifier.
  • a heat exchange pipe and a heat exchange container that houses the heat transfer medium circulation pipe, and the heat exchange fluid is distributed and dropped from the orifice to be distributed in a liquid film along the outer surface of the heat transfer medium circulation pipe; While flowing down, the fluid to be cooled can be exchanged in the form of a liquid film following the outer surface of the refrigerant flow pipe, and heat exchange can be performed while flowing down, and the following excellent effects can be obtained.
  • the orifice can be maintained by contact by relative movement.
  • a chimney effect is created by providing an air intake hole on the side of the heat exchange vessel, an exhaust duct and an exhaust port for exhausting air, and external air is forced to convection inside the heat exchange vessel without using a fan or other equipment.
  • the heat of vaporization can be transferred by forced convection heat transfer and discharged to the outside of the heat exchange container, thereby increasing the cooling capacity. If a blower fan or the like is used, further cooling capacity can be expected. Moreover, the energy can be further effectively used by using the exhaust heat.
  • the heat exchanging part of the heat transfer medium flow pipe is formed with a plurality of loops bent in a round shape or an ellipse in a spiral shape in the vertical direction, so that there is no abrupt bent pipe path and the energy loss is reduced.
  • the flow rate and pressure of the heat transfer medium become constant, and the heat exchange capacity is improved. Since the heat exchanging unit bends one pipe in a spiral shape, the number of manufacturing steps is reduced and the cost becomes simple and inexpensive.
  • the vertical interval can be arbitrarily narrowed, and thus the size can be reduced.
  • the falling liquid film type heat exchange device is formed in a flow path in which the entire structure of the heat exchange fluid and the heat transfer medium flow pipe is orthogonal, but the heat transfer medium is injected from below and discharged upward. It is also a counter flow, and the wall of the flow pipe is formed in a corrugated and spiral shape, and it can be divided into two types, counter flow and parallel flow. It exhibits efficient heat exchange capability through combined heat exchange and vibration agitation by rotating the medium. To do. Furthermore, in the heat exchange between the high temperature and the low temperature, the thermal expansion of the flow pipe due to the temperature difference can be absorbed.
  • the fluid level of the flow rate adjusting unit is provided by separating the heat exchange fluid storage tank opened to the atmosphere and the flow rate adjustment unit including the orifice and providing the liquid level adjustment unit in the heat exchange fluid storage tank. And the difference in flow rate decreases, and the difference in potential energy, pressure, and kinetic energy decreases.
  • the fluid is sucked up by the siphon effect (capillary phenomenon), so that it can be sucked up even if the remaining amount is low. Accordingly, the difference between the dropping speed and the falling liquid film amount is also reduced, and the heat exchange processing amount is stabilized.
  • the liquid level and flow rate of the fluid in the flow rate adjusting unit are provided by separating the sealed heat exchange fluid storage tank and the flow rate adjustment unit including the orifice and providing the liquid level adjustment unit in the heat exchange fluid storage tank.
  • the difference in potential decreases, and the difference in potential energy, pressure, and kinetic energy decreases.
  • the fluid is supplied by the siphon effect, so that only a reduced amount is replenished and a constant liquid level can be maintained. Accordingly, the difference between the dropping speed and the falling liquid film amount is also reduced, and the heat exchange processing amount is stabilized.
  • the heat exchange fluid can be heat-treated a plurality of times by stacking the heat exchange devices in the vertical direction, even if the temperature difference between the fluid and the heat transfer medium is large and the amount of treatment is large, The fluid after the treatment can be performed simultaneously with the heat transfer medium temperature, and the heat exchange capability is increased.
  • BRIEF DESCRIPTION OF THE DRAWINGS (a) which shows one Example of the flow-down type membrane heat exchange apparatus which concerns on this invention is a perspective view, (b) is a top view, (c) is the perspective view seen from the bottom face side.
  • BRIEF DESCRIPTION OF THE DRAWINGS (a) which shows one Example of the flowing-down type membrane heat exchange apparatus which concerns on this invention is a front view, (b) is a right view, (c) is a rear view.
  • (A) is the sectional view on the AA line of FIG. 2 (a)
  • (b) is the expanded sectional view of the principal part C of a flow control board.
  • FIG. (A) is a plan view of the orifice
  • (b) is a cross-sectional view taken along the line HH of (a)
  • (c) is an enlarged cross-sectional view of the main part D
  • (d) is a perspective view.
  • It is a longitudinal cross-sectional perspective view of the flowing-down type membrane heat exchange apparatus shown in FIG.
  • (A) is a perspective view
  • (b) is a top view
  • (c) is a perspective view seen from the bottom side showing other examples of a flow-down type membrane heat exchange device concerning the present invention.
  • (A) is a front view
  • (b) is a right side view
  • (c) is a rear view showing another embodiment of the falling film type heat exchanger according to the present invention.
  • FIG. 7A is a cross-sectional view taken along the line BB in FIG. 7A
  • FIG. 7B is an enlarged cross-sectional view of a main part D of the liquid level adjusting unit.
  • FIG. (A) is a perspective view
  • (b) is a top view
  • (c) is a perspective view seen from the bottom side showing other examples of a flow-down type membrane heat exchange device concerning the present invention.
  • (A) is a front view
  • (b) is a right side view
  • (c) is a rear view showing another embodiment of the falling film type heat exchanger according to the present invention.
  • 11A is a cross-sectional view taken along the line EE of FIG.
  • FIG. 11A, and FIG. 11B is an enlarged cross-sectional view of a main part F of the liquid level adjusting unit.
  • FIG. (A) which shows the other Example of the flow-down type membrane heat exchange apparatus which concerns on this invention is a perspective view
  • (b) is the perspective view seen from the back side.
  • (A) is a front view and (b) is a sectional view taken along the line GG of (a), showing another embodiment of the falling film heat exchanger according to the present invention.
  • (A) which shows a part of spiral pipe which is an example of a heat transfer medium distribution pipe is a front view
  • (b) is a side view
  • (c) is a perspective view.
  • a liquid for heat exchange is poured into a cylindrical rectifying unit whose upper part is open to the atmosphere, and an appropriate amount is adjusted from an orifice 14 of a flow rate adjusting plate 13 provided on the bottom surface of the rectifying unit. Dripping into.
  • the liquid supplied at the optimum flow rate is caused to flow down in the form of a falling film outside the pipe through which the heat transfer medium passes.
  • the aim is to achieve high-efficiency heat exchange through the synergistic effect of the promotion of sensible heat transport and the vaporization from the surface of the falling film.
  • a falling film heat exchanger (hereinafter simply referred to as a cooling device) 1 according to the present invention is open at the top and has a discharge port 24 at the bottom.
  • a plurality of orifices formed in an annular shape on the horizontal surface of the bottom of the rectifier 12, and a heat exchanging section 32 comprising a heat transfer medium flow pipe 31 wound in a coil shape provided to hang down from the rectifier 12,
  • the heat exchanger 21 is configured to house the heat exchanger 32.
  • the introduced heat exchange fluid is distributed and dropped from the orifice 14 of the flow rate adjusting plate 13 along the outer surface of the heat transfer medium circulation pipe 31.
  • the partition wall type heat exchange between the heat transfer medium distributed and flowing down in the form of a liquid film and flowing in the heat transfer medium flow pipe 31 is performed, that is, the heat exchange fluid is cooled in this embodiment.
  • each of the plurality of orifices 14 formed in the flow rate adjusting plate 13 is provided with a funnel-shaped taper whose diameter is reduced downward. It arrange
  • the diameter of the lower end of the orifice 14 is smaller than the diameter D of the dripping through hole 12a, and smooth flow can be promoted by the suction pressure generated when the charged heat exchange fluid is dropped.
  • the flow rate adjustment unit 11 has a laminated structure including a rectifier 12 and a flow rate adjustment plate 13 provided on the upper side of the rectifier 12.
  • the flow rate adjustment plate 13 is provided with a funnel-shaped orifice 14, and the through hole of the rectifier 12 is provided.
  • the diameter D of the (through hole) 12 is larger than the lower end diameter d of the orifice 14, and the through holes 12 are annularly arranged at an equal pitch.
  • the hole diameter d of the orifice 14 of the flow rate adjusting plate 13 and the through hole of the rectifier 12 are provided at positions where a communication hole can be formed by relative movement of D, and another flow rate having a different lower end diameter d of the orifice 14. By exchanging with the adjustment plate 13, the flow rate can be adjusted appropriately.
  • an exhaust port 22 is provided on the side surface of the cylindrical exhaust duct 15 and the heat exchange vessel 21 that are open at the top so as to extend upward from the bottom of the rectifier 12, and an intake port 23 is provided on the opposite side surface. Then, the air is sucked from the intake port 23 and rises to form a heat dissipation path for discharging from the first exhaust duct 15 and the exhaust port 22, and is generated when the heat exchange fluid flows down in the heat exchange container 21. Heat exchange is performed by forced convection heat transfer by heat of vaporization.
  • the heat transfer medium flow pipe 31 includes a heat exchanging portion 32 in which a plurality of loops bent in a round shape or an ellipse are spirally formed at predetermined intervals in the vertical direction, a water injection portion 35 for injecting the heat transfer medium,
  • the heat exchange section 32 is formed in a corrugated and spiral shape in which the inner surface and the outer surface of the tube wall extend in the axial direction, and the heat transfer medium and the heat transfer medium are rotated by the rotational movement of the heat transfer medium. While the heat exchange fluid alternately performs countercurrent and cocurrent heat exchange, a heat transfer medium is formed in a flow path through which the heat transfer medium is injected from below and discharged upward, thereby performing countercurrent heat exchange.
  • a bottomed tubular heat exchange fluid storage tank 41 whose upper side is open to the atmosphere is disposed at the top of the rectifier 12 and extends upward from the bottom of the storage tank 41.
  • the liquid level inner tube 45 and the liquid level outer tube 44 that covers the outside of the liquid level inner tube 45 have a double structure.
  • a gap on the inner surface of the liquid level outer tube 44 is formed as a flow path, and a heat dissipation path is formed in which the air is sucked and rises from the intake port 23 and is discharged from the second exhaust duct 42 and the exhaust port 22.
  • a liquid level adjusting unit 43 that starts to suck up the fluid by the siphon effect and sucks it up to the position of the lower end of the liquid level outer cylinder pipe 44 is provided.
  • a cylindrical heat exchange fluid storage tank 41 whose upper part is covered with a lid 48 and sealed is arranged on the upper part of the rectifier 12.
  • the liquid level pipe 47 extending downward from the bottom starts to supply when the liquid level of the rectifier 12 is below the liquid level pipe 47, and a plurality of slit holes perforated on the lower outer periphery of the liquid level pipe 47
  • the liquid level adjusting unit 43 is provided so that the supply is stopped when the upper surface position of the filter 46 consisting of 46a is reached, and an amount reduced by the siphon effect is supplied to maintain a constant liquid level.
  • an air vent 16 provided on the side of the rectifier 12 and an air outlet 23 provided on the side opposite to the air outlet 22 provided on the side of the heat exchange vessel 21 are provided.
  • the heat exchange device 1 described above is stacked in a plurality of stages in the vertical direction, and the heat exchange fluid is continuously heat exchanged a plurality of times, thereby further improving the heat exchange efficiency.
  • Can do when a spiral pipe is used for the heat transfer medium flow pipe 31 wound in a coil shape, the surface area and the residence time with which the heat exchange fluid comes into contact are increased, thereby further improving the heat exchange efficiency. Can do.
  • the material of the heat exchange apparatus of a present Example suitably employ
  • boilers are indispensable heat exchangers in various industrial fields. It is used in various places, from hot spring facilities to agriculture, industry, and home use. For example, by directly heating and using a cold spring with a boiler, hot spring components (sludge) not only cause excessive costs for maintenance due to failure, deterioration, and adhesion of the boiler, but also shorten the life of the boiler. Therefore, by using the apparatus of the present invention in combination, high-temperature water from the boiler can be supplied as a heat transfer medium, and can be circulated between the boiler and the heat exchanger, preventing boiler failure and improving fuel efficiency. Waste heat from the boiler can also be used. Furthermore, CO 2 can be reduced by treating the exhaust heat to lower the exhaust heat temperature.
  • the product after the heat treatment can be immediately cooled, so that the container can be immediately packed and the productivity is improved.
  • rapid container packing prevents the flavor from being damaged.
  • the field of use can be expanded by changing the material of the apparatus. For example, industrial (cooling water, factory wastewater, product cooling), agriculture (house boiler (heat efficiency is increased by circulation), hydroponics, geothermal cultivation), manufacturing (beverages, liquor, shochu, dashi, Tofu), facilities (hot springs, leisure facilities, health land, accommodation facilities, aquariums), medical / pharmaceutical manufacturing, heat exchangers for gases, steam, exhaust heat, heat exchangers using geothermal heat, boiler exhaust heat, wood drying Steam treatment at the time, cleaning steam treatment, etc. can be enumerated.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

La présente invention aborde le problème de la réalisation d'un échangeur de chaleur de type à flot tombant qui peut non seulement refroidir un fluide à haute température dans un temps très court tout en ayant une structure simple, mais qui permet également de nettoyer facilement et de manière fiable des parties sur lesquelles un fluide refroidi a adhéré. La solution selon l'invention porte sur un échangeur de chaleur de type à flot tombant (1) qui comprend un redresseur cylindrique (12) ayant un fond dont la portion supérieure est ouverte vers l'atmosphère, une pluralité d'orifices (14) formés en une boucle sur une face plate horizontale du fond du redresseur (12), un tuyau (31) de distribution de fluide de transfert de chaleur suspendu à partir du redresseur (12) et un échangeur de chaleur (21) qui accueille le tuyau (31) de distribution de fluide de transfert de chaleur et qui amène le fluide d'échange de chaleur à s'égoutter depuis les orifices (14) d'une manière distribuée pour s'écouler vers le bas et être distribué sous la forme d'un film liquide le long de la surface extérieure du tuyau (31) de distribution de fluide de transfert de chaleur, et réalise un échange de chaleur de type à cloison étanche par écoulement transversal avec le fluide de transfert de chaleur qui s'écoule dans le tuyau (31) de distribution de fluide de transfert de chaleur. Les orifices sont pourvus de cônes en forme d'entonnoir.
PCT/JP2017/015313 2017-04-14 2017-04-14 Échangeur de chaleur du type à flot tombant WO2018189887A1 (fr)

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JP2019512150A JP6892574B2 (ja) 2017-04-14 2017-04-14 流下液膜式熱交換装置
PCT/JP2017/015313 WO2018189887A1 (fr) 2017-04-14 2017-04-14 Échangeur de chaleur du type à flot tombant

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Cited By (6)

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JP2020109332A (ja) * 2018-12-29 2020-07-16 浩 畑元 液体冷却装置
JP2021054474A (ja) * 2019-09-30 2021-04-08 サンデン・リテールシステム株式会社 飲料用熱交換器
CN112755553A (zh) * 2019-11-01 2021-05-07 无锡市百育药化设备制造有限公司 一种刮板蒸发器的高效螺旋分布器
US11077194B2 (en) 2012-03-14 2021-08-03 Novan, Inc. Nitric oxide releasing pharmaceutical compositions
JP7138384B1 (ja) 2022-01-20 2022-09-16 株式会社スイシン 熱交換装置
US20220341672A1 (en) * 2019-09-06 2022-10-27 Hiroshi Hatamoto Heat exchanging apparatus

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