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CN210321359U - Separated microchannel siphon type heat exchanger - Google Patents

Separated microchannel siphon type heat exchanger Download PDF

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Publication number
CN210321359U
CN210321359U CN201920777817.8U CN201920777817U CN210321359U CN 210321359 U CN210321359 U CN 210321359U CN 201920777817 U CN201920777817 U CN 201920777817U CN 210321359 U CN210321359 U CN 210321359U
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pump
self
heat
driving
circulation
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陈永平
崔雯婧
常洋珲
夏玉娟
宋雪晴
刘玉龙
姚峰
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Suzhou University of Science and Technology
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Suzhou University of Science and Technology
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Abstract

The utility model discloses a separating microchannel siphon heat exchanger, which comprises a shell, a separating heat dissipation module and a fan device; the separated heat dissipation module is divided into two independent loops of self-driven circulation and pump driven circulation, and the self-circulating loop comprises a self-circulating condensation heat release unit, a self-circulating evaporation heat absorption unit, a self-circulating return pipe and a self-circulating ascending pipe; the pump driving loop comprises a pump driving condensation heat release unit, a pump driving evaporation heat absorption unit, a pump driving ascending pipe, a driving pump return pipe and a driving pump arranged on the driving pump return pipe. The utility model discloses the double loop disconnect-type radiating module who combines passively with the owner is the core, and it is stronger to have a heat transfer ability, and the cycling power is secure, and the environment can be discharged to the heat efficient in the airtight rack to the better advantage of isothermal effect, has good application prospect.

Description

Separated microchannel siphon type heat exchanger
Technical Field
The utility model relates to a heat exchanger, concretely relates to separating type microchannel capillary siphon heat exchanger.
Background
With the development of the micro-electro-mechanical technology, electronic components show the development trend of high integration level, small volume and high working power consumption, and the requirement of an electronic system on the heat dissipation capability of a heat dissipation module is greatly improved. For a high-power communication cabinet working outdoors, in a factory, or the like, a measure of placing a communication electronic system in a closed cabinet is usually adopted due to a severe working environment, so that the influence of adverse environmental factors such as dust, humid air, corrosive gas, and the like in the environment is prevented, and the safe and stable operation of the communication electronic system is ensured. However, the heat dissipation environment in the closed cabinet is severe, and the problem that the electronic system fails due to overhigh temperature in the cabinet is easy to occur. Therefore, a method of installing a heat exchanger on the communication cabinet is required to timely discharge heat emitted by the electronic system to an outdoor environment, so as to ensure the normal operation of the closed electronic communication cabinet.
The heat exchangers of the communication cabinet are divided into two types, namely a cross plate type heat exchanger and a refrigeration type heat exchanger. The radiating modules of the cross plate type heat exchanger are densely arranged parallel fin plates, and have the advantages of low cost, simple production process and the like, but the heat exchanger has larger temperature gradient loss and more limited heat exchange efficiency ratio. The heat dissipation module of refrigeration type heat exchanger is compressor refrigeration module, realizes temperature control easily, and the heat-sinking capability is stronger, nevertheless because this heat dissipation module is initiative refrigeration formula, the energy consumption is big, and is expensive, and the structure is complicated, and the installation is maintained fairly inconveniently. Therefore, there is a need in the current heat exchanger market to develop heat exchangers with higher heat dissipation capability, lower cost, and easier maintenance.
Compared with the common heat dissipation mode of fluid convection heat transfer, the heat dissipation mode of fluid flow phase change heat transfer has higher heat dissipation heat flux density, better isothermal property and stronger heat dissipation capability. Based on the heat exchanger, heat exchangers which take high-performance phase change heat transfer devices such as heat pipes, thermosiphons and micro-channel flat tube heat sinks as heat dissipation units appear in the market, heat transfer is realized by evaporation heat absorption and condensation heat release of filled working media, the heat exchanger is high in effective heat conductivity coefficient, good in isothermal performance and long in conveying distance, and is widely applied at present.
However, the conventional heat pipe heat exchanger usually only adopts a passive heat pipe core, and under severe working conditions such as extreme high temperature, the heat dissipation effect is poor and the temperature in the cabinet is too high due to too low heat exchange temperature difference caused by too high outdoor environment temperature. Therefore, the utility model discloses a two return circuit disconnect-type microchannel capillary siphon heat exchanger that is used for radiating owner of airtight communication rack to combine passively can realize mode's conversion according to the inside temperature of rack to make heat exchanger maintain higher heat transfer capacity, ensure the safe temperature operation of closed communication rack.
Disclosure of Invention
The utility model aims to solve the technical problem that to the not enough of above-mentioned prior art, and provide a can effectively reduce a disconnect-type microchannel capillary siphon heat exchanger of closed communication rack temperature level, its effective heat transfer area is big, and heat transfer performance is excellent, compact structure, and it is nimble to use, easily modularized design and manufacturing installation.
In order to solve the technical problem, the utility model discloses a technical scheme does:
the utility model provides a disconnect-type microchannel capillary siphon heat exchanger, includes the casing, disconnect-type heat dissipation module and fan device, its characterized in that: the separated heat dissipation module is of a double-loop structure arranged in a stacked mode and is divided into a self-circulation loop and a pump driving loop, and the self-circulation loop comprises a self-circulation condensation heat release unit, a self-circulation evaporation heat absorption unit, a self-circulation return pipe and a self-circulation ascending pipe; the pump driving loop comprises a pump driving condensation heat release unit, a pump driving evaporation heat absorption unit, a pump driving ascending pipe, a driving pump return pipe and a driving pump arranged on the driving pump return pipe; the shell is also internally provided with a clapboard which divides the shell into a cold air circulation space and a hot air circulation space which are mutually independent; the self-circulation ascending pipe and the self-circulation return pipe penetrate through the partition plate and are connected with the self-circulation evaporation heat absorption unit and the self-circulation condensation heat release unit to form a self-circulation loop; the pump driving ascending pipe and the pump driving return pipe penetrate through the partition plate and are connected with the pump driving evaporation heat absorption unit and the pump driving condensation heat release unit to form a pump driving loop.
Air inlets and air outlets are arranged on the cold air side panel and the hot air side panel of the shell.
The fan device comprises a fan bracket and a fan arranged on the fan bracket, wherein the fan bracket is arranged at the air inlet and the air outlet of the cold air side panel and the hot air side panel.
The self-circulation condensation heat release unit and the self-circulation evaporation heat absorption unit are composed of a flat micro-channel capillary siphon, a high-thermal-conductivity fin and a working medium confluence groove; the flat micro-channel capillary siphons are arranged in rows, the high-thermal-conductivity fins are located between the flat micro-channel capillary siphons, two sides of each flat micro-channel capillary siphon are connected with the side faces of the flat micro-channel capillary siphons in a welded mode, and the heads and the tails of the flat micro-channel capillary siphons are connected with the working medium confluence groove.
The pump driving condensation heat release unit and the pump driving evaporation heat absorption unit are composed of a flat micro-channel capillary siphon, a high-thermal-conductivity fin and a working medium confluence groove; the flat micro-channel capillary siphons are arranged in rows, the high-thermal-conductivity fins are located between the flat micro-channel capillary siphons, two sides of each flat micro-channel capillary siphon are connected with the side faces of the flat micro-channel capillary siphons in a welded mode, and the heads and the tails of the flat micro-channel capillary siphons are connected with the working medium confluence groove.
The utility model relates to a disconnect-type microchannel capillary siphon heat exchanger, including casing, disconnect-type radiating module and fan unit, the casing be the cuboid shape, by cold air side board, hot-air side board, side board and baffle enclose to close to form. The cold and hot air panels are respectively provided with an air inlet and an air outlet, the partition plate is fastened on the inner side of the side panel to divide the heat exchanger into two independent spaces, and the independent space formed between the partition plate and the cold air side panel is the cold air circulating space and is communicated with the external environment; the independent space formed between the partition board and the hot air side panel is the hot air circulation side and is communicated with the space in the cabinet.
The separated heat dissipation module is positioned in the shell and has a double-loop structure, and the self-driven loop comprises a condensation heat release unit, an evaporation heat absorption unit, a working medium return pipe and a working medium ascending pipe; the pump drive circuit comprises a drive pump in addition to the above-mentioned components. The condensation heat release unit is positioned in the heat dissipation circulation space, the evaporation heat absorption unit is positioned in the heat absorption circulation space, the working medium ascending pipe and the working medium return pipe penetrate through the partition plate and are connected with the condensation heat release unit and the evaporation heat absorption unit end to form a working medium circulation passage. The driving pump is positioned on the working medium return pipe and can be used for improving the working medium circulation rate when being started.
The extension device comprises a fan bracket and a fan, the fan bracket is positioned on the cold air side panel and the hot air side panel, and the fan is fixed on the fan bracket to respectively realize cold air circulation and hot air circulation.
The separated heat dissipation module is a phase-change type high-efficiency heat transfer device. The condensation heat release unit and the evaporation heat absorption unit are composed of flat micro-channel capillary siphons, high-thermal-conductivity fins and working medium confluence grooves. The flat microchannel capillary siphon is arranged in rows, the high-thermal-conductivity fins are located between the flat microchannel capillary siphon, two sides of the flat microchannel capillary siphon are connected with the side faces of the flat microchannel capillary siphon in a welded mode, the head and the tail of the flat microchannel capillary siphon are connected with the working medium converging groove, and the condensation heat release unit and the evaporation heat absorption unit are formed.
In the separated heat dissipation module, the working medium of the evaporation heat absorption unit absorbs heat, evaporates, gasifies and expands, thermosiphon pressure difference is generated in each parallel flat micro-channel capillary siphon, and capillary suction pressure difference can be generated simultaneously under the action of surface tension due to the small channel size in the flat micro-channel capillary siphon. Under the action of the two driving pressure differences, working media in the evaporation heat absorption unit absorb heat and change phase to evaporate, the working media enter the working media flow converging groove and then rise through the working media ascending pipe to enter the working media backflow groove positioned at the upper part of the condensation heat release unit, and after uniform redistribution of working media flow is realized in the working media flow converging groove, the working media flow flows into each parallel flat microchannel capillary siphon of the condensation heat release unit to generate condensation heat release, so that the working media become liquid working media. Then flows back to the working medium confluence groove at the lower part of the condensation heat release unit under the action of gravity, and then flows into the evaporation heat absorption unit through the return pipe for recycling.
The passive self-circulation working mode and the pump driving working mode are characterized in that,
when the environment temperature is lower, the driving pump does not operate, the working medium operates under the action of capillary suction pressure difference and thermosiphon pressure difference, and the heat exchanger is in a passive self-circulation working mode. At this moment, the internal temperature of the cabinet is higher than the temperature of the outdoor environment, the heat exchange temperature difference is higher, and the heat can be timely dissipated to the environment from the inside of the cabinet by the separated heat dissipation module, so that the internal temperature of the cabinet can be lower than a warning value, and the electronic system can stably operate. The operation process is complete self-circulation operation under the action of two driving pressure differences, and the pump work does not need to be consumed additionally for driving.
However, when the environmental temperature is too high and the heat exchange condition is severe, the temperature difference between the inside and the outside of the cabinet is low, the heat driving force is insufficient, and the heat exchange capacity of the separated heat dissipation module is reduced, so that the temperature inside the sealed cabinet is too high or even exceeds a threshold value, an electronic system is down, and the communication cabinet cannot normally operate. For avoiding the emergence of this condition, the utility model discloses installed additional on the working medium back flow in the pump drive return circuit the driving pump, when the cupboard temperature surpassed the warning value of settlement, the driving pump started, and heat exchanger got into the initiative pump and drives the mode this moment. At the moment, the driving pump additionally adds an active driving force for working medium circulation, working medium circulation efficiency is improved, heat discharge capacity is improved, and the temperature in the closed cabinet is controlled within a warning range, so that normal operation of an electronic system in the cabinet is guaranteed.
Compare with ordinary disconnect-type heat dissipation module, the utility model provides an active and passive combination dual circuit disconnect-type heat dissipation module, it is stronger to have a heat transfer ability, and circulating driving power is secure, and the advantage that isothermal effect is better can discharge the environment with the heat efficient in the airtight rack.
The flat microchannel capillary siphon can be in different shapes such as rectangle and trapezoid. According to the working environment temperature of the heat exchanger, the cross section of the internal micro-channel can be in an I shape, a quadrilateral shape, a triangular shape, a corrugated shape, an omega shape and the like, so that a stronger thermal capillary suction driving force can be formed at the inner corner of the micro-channel.
The shell, the separated heat exchange module and the like are made of stainless steel, and the stainless steel is the most suitable shell material for avoiding corrosion caused by adverse factors of the environment. The fins can effectively increase the heat exchange area of the separated heat dissipation module, and the fins are made of aluminum shutter fins so as to reduce grouping and improve heat transfer efficiency.
The air driving device is composed of a fan and a fan bracket, and the fan is a centrifugal fan which can make the air flow direction vertically turn. The fan bracket is made of stainless steel.
The working medium in the separated heat dissipation module can be any liquid working medium such as water, ammonia, ethanol, propanol, acetone, organic matters, a refrigerant and the like according to the temperature requirement of the working environment.
And dust screens are arranged on the air inlet and the air outlet.
Advantageous effects
The separating microchannel capillary siphon heat exchanger of the utility model generates thermal siphon pressure difference in each parallel flat microchannel capillary siphon, and the channel structure in the flat microchannel capillary siphon can provide capillary suction pressure difference, so that the separating microchannel capillary siphon heat exchanger has stronger heat exchange capability and better isothermal performance; the fin structure arranged between the flat micro-channel capillary siphons can effectively increase the heat exchange area; the condensation heat release unit and the evaporation heat absorption unit are tightly attached to the air outlet, the flow channel is simple, the flow resistance is small, the effective circulation area of cold and hot air circulation is greatly increased, and the convection heat exchange effect of the air and the separated heat dissipation module is good; finally, according to external environment temperature and temperature level in the rack, the utility model provides a disconnect-type microchannel capillary siphon heat exchanger can drive between the mode of operation at passive self-loopa mode and initiative pump and switch over, and the setting of driving pump can provide extra drive power when needs, maintains disconnect-type heat dissipation module's high-efficient operation, and the safe operation of electronic system has strengthened disconnect-type microchannel capillary siphon heat exchanger's environmental suitability in the guarantee closed communication rack, has further expanded its range of application.
Drawings
FIG. 1 is a schematic diagram of a split microchannel siphon heat exchanger;
fig. 2 is a schematic structural view of the separated heat dissipation module of the present invention;
FIG. 3 is a schematic view of a flat microchannel capillary siphon according to the present invention;
FIG. 4 is a schematic diagram of the operation of the present invention;
in the drawings, 1. a cold air side panel; 2. a hot air side panel; 3. a side panel; 4. a partition plate; 5. a self-circulating riser; 6. the pump drives the ascending pipe; 7. a self-circulation evaporation heat absorption unit; 8. the pump drives the evaporation heat absorption unit; 9. a self-circulating condensation heat release unit; 10. the pump drives the condensation heat release unit; 11. a fan bracket; 12. a fan; 13. a flange; 14. a cold air inlet; 15. a cool air outlet; 16. a hot air inlet; 17. a hot air outlet; 18. a self-circulation return pipe; 19. a pump drive return conduit; 20. driving the pump; 21. a flat microchannel capillary siphon; 22. a fin; 23. and the working medium confluence groove.
Detailed Description
The following is described in further detail in conjunction with the accompanying drawings:
fig. 1 shows a schematic structural diagram of the present invention, which is a separated microchannel capillary siphon heat exchanger for heat dissipation of an airtight communication cabinet, and the heat exchanger includes a housing, a separated heat dissipation module and a blower device. The concrete structure includes: the system comprises main parts such as a cold air side panel 1, a hot air side panel 2, a side panel 3, a partition plate 4, a self-circulation ascending pipe 5, a pump driving ascending pipe 6, a self-circulation return pipe 18, a pump driving return pipe 19, a self-circulation evaporation heat absorption unit 7, a pump driving evaporation heat absorption unit 8, a self-circulation condensation heat release unit 9, a pump driving condensation heat release unit 10, a fan bracket 11, a fan 12, a flange 13 and the like. The cold air side panel 1 is provided with a cold air inlet 14 and a cold air outlet 15, and the hot air side panel 2 is provided with a hot air inlet 16 and a hot air outlet 17. The partition plate 4 is fastened to the inside of the side panel 3 to divide the internal space of the heat exchanger into a cool air circulation space and a warm air circulation space, which are independent of each other. The self-circulation ascending pipe 5 and the self-circulation return pipe 18 penetrate through the partition plate and are connected with the self-circulation evaporation heat absorption unit 7 and the self-circulation condensation heat release unit 9 to form a self-circulation loop. The pump driving ascending pipe 6 and the pump driving return pipe 19 penetrate through the partition plate and are connected with the pump driving evaporation heat absorption unit 8 and the pump driving condensation heat release unit 10 to form a pump driving loop. The fan 12 is fixed at the cool air inlet 14 and the hot air inlet 16 by the fan bracket 11.
Fig. 2 shows a schematic structural diagram of the separated heat dissipation module. As shown in fig. 2, the self-circulation evaporation heat absorption unit 7 and the pump-driven evaporation heat absorption unit 8 are arranged in a stacked manner, and the self-circulation condensation heat release unit 9 and the pump-driven condensation heat release unit 10 are also arranged in the same manner. The pump drive return pipe 19 is provided with a drive pump 20. The flat micro-channel capillary siphons 21 are arranged in rows, fins 22 are arranged among the tubes, and then the flat micro-channel capillary siphons are connected with the working medium confluence groove 23 to form a condensation heat release unit or an evaporation heat absorption unit.
Fig. 3 shows a schematic structural diagram of a flat micro-channel capillary siphon tube 21, and the channel structure thereof can be rectangular, i-shaped, triangular, etc.
Fig. 4 shows the working principle diagram of the present invention. When in the passive self-circulation mode, the outdoor cold air and the hot air in the cabinet enter the cold air circulation space and the hot air circulation space respectively through the fan 12. In the hot air circulation space, the liquid working medium in the flat micro-channel capillary siphon 21 in the self-circulation evaporation heat absorption unit 7 and the pump-driven evaporation heat absorption unit 8 exchanges heat with blown hot air, the heat is evaporated into a gas state after being absorbed and begins to rise, the gas enters a working medium confluence groove, then enters the self-circulation condensation heat release unit 9 and the pump-driven condensation heat release unit 10 through the self-circulation ascending pipe 5 and the pump-driven ascending pipe 6, is shunted by the working medium confluence groove and then enters the flat micro-channel capillary siphon 21, heat is released to cold air blown on the surfaces of the self-circulation condensation heat release unit 9 and the pump-driven condensation heat release unit 10, is condensed into liquid, enters the working medium confluence groove 23 at the lower parts of the self-circulation condensation heat release unit 9 and the pump-driven condensation heat release unit 10, and enters the confluence groove 23 at the lower parts of the self-circulation evaporation heat absorption unit 7 and the pump-driven evaporation heat absorption unit 8 through the self-circulation return pipe 18 and the pump In the groove, the heat enters the flat micro-channel capillary siphon 21 of the self-circulation evaporation heat absorption unit 7 and the pump-driven evaporation heat absorption unit 8 under the action of capillary siphon suction force and heat-driven pressure difference, is heated and evaporated again, and is circulated in such a way to discharge the heat in the closed communication cabinet to the outdoor environment.
If the outdoor temperature is too high, the heat exchange effect is poor, and the temperature in the communication cabinet exceeds the warning value, the heat exchanger is switched to an active pump driving working mode, at the moment, the driving pump 20 starts to operate, the working medium absorbs heat from the pump driving evaporation heat absorption unit 8 and evaporates into the working medium, the working medium enters the pump driving condensation heat release unit 10 through the pump driving ascending pipe 6 to be condensed and release heat, and then returns to the pump driving evaporation heat absorption unit 8 through the pump driving return pipe 19 to absorb heat and evaporate again. Under the action of the driving pump 20, the flow rate of the working medium in the circulation of the driving pump is obviously increased, and the heat dissipation capacity of the heat exchanger is enhanced, so that the heat in the cabinet can still be dissipated to the external environment in time, and the temperature level of the cabinet is effectively controlled.

Claims (7)

1.一种分离式微槽道毛细虹吸管式热交换机,包括壳体,分离式散热模块和风机装置,其特征在于:分离式散热模块为层叠布置的双回路结构,分为自循环回路与泵驱动回路,自循环回路包括自循环冷凝放热单元、自循环蒸发吸热单元、自循环回流管以及自循环上升管;泵驱动回路除包括泵驱动冷凝放热单元、泵驱动蒸发吸热单元、泵驱动上升管、驱动泵回流管以及设置在驱动泵回流管上的驱动泵;在所述壳体内还设置有将壳体内分隔成互相独立的冷空气循环空间与热空气循环空间的隔板;自循环上升管与自循环回流管穿过所述隔板,与所述自循环蒸发吸热单元和自循环冷凝放热单元连接,形成自循环回路;所述泵驱动上升管和及泵驱动回流管穿过所述隔板,与泵驱动蒸发吸热单元及泵驱动冷凝放热单元连接,形成泵驱动回路。1. a separate micro-channel capillary siphon type heat exchanger, comprising a housing, a separate heat dissipation module and a fan device, it is characterized in that: the separate heat dissipation module is a double-loop structure of stacked arrangement, and is divided into self-circulating loop and pump drive The self-circulation loop includes a self-circulating condensation heat-releasing unit, a self-circulating evaporation heat-absorbing unit, a self-circulating return pipe and a self-circulating rising pipe; the pump-driven circuit includes a pump-driven condensation heat-releasing unit, a pump-driven evaporation heat-absorbing unit, a pump The driving riser pipe, the driving pump return pipe and the driving pump arranged on the driving pump return pipe are also arranged in the casing; The circulation riser and the self-circulation return pipe pass through the baffle, and are connected with the self-circulation evaporation heat absorption unit and the self-circulation condensation heat release unit to form a self-circulation loop; the pump drives the riser and the pump drives the return pipe Passing through the partition, it is connected with the pump-driven evaporation heat absorption unit and the pump-driven condensation heat release unit to form a pump-driven circuit. 2.根据权利要求1所述的分离式微槽道毛细虹吸管式热交换机,其特征在于,在所述壳体的冷、热空气侧面板上均设置有进风口与出风口。2 . The separate micro-channel capillary siphon type heat exchanger according to claim 1 , wherein an air inlet and an air outlet are provided on the cold and hot air side panels of the housing. 3 . 3.根据权利要求2所述的分离式微槽道毛细虹吸管式热交换机,其特征在于,所述风机装置包括风机支架以及设置在风机支架上的风机,风机支架设置在冷空气侧面板和热空气侧面板的空气进出口处。3. The detachable micro-channel capillary siphon type heat exchanger according to claim 2, wherein the fan device comprises a fan support and a fan arranged on the fan support, and the fan support is arranged on the cold air side panel and the hot air Air inlet and outlet on side panels. 4.根据权利要求1所述的分离式微槽道毛细虹吸管式热交换机,其特征在于,所述自循环冷凝放热单元与自循环蒸发吸热单元由扁平微槽道毛细虹吸管、高导热性翅片和工质汇流槽构成;扁平微槽道毛细虹吸管呈多列并排布置,高导热性翅片位于扁平微槽道毛细虹吸管之间,两侧均与所述扁平微槽道毛细虹吸管侧面焊接连接,所述扁平微槽道毛细虹吸管首尾均与所述工质汇流槽连接。4. The separated micro-channel capillary siphon type heat exchanger according to claim 1, wherein the self-circulating condensation heat releasing unit and the self-circulating evaporation heat-absorbing unit are composed of flat micro-channel capillary siphon, high thermal conductivity fins The flat micro-channel capillary siphons are arranged side by side in multiple rows, and the high thermal conductivity fins are located between the flat micro-channel capillary siphons, and both sides are welded to the side of the flat micro-channel capillary siphons. , the ends of the flat micro-channel capillary siphon are connected with the working fluid sink. 5.根据权利要求1所述的分离式微槽道毛细虹吸管式热交换机,其特征在于,所述泵驱动冷凝放热单元与泵驱动蒸发吸热单元由扁平微槽道毛细虹吸管、高导热性翅片和工质汇流槽构成;扁平微槽道毛细虹吸管呈多列并排布置,高导热性翅片位于扁平微槽道毛细虹吸管之间,两侧均与所述扁平微槽道毛细虹吸管侧面焊接连接,所述扁平微槽道毛细虹吸管首尾均与所述工质汇流槽连接。5. The split-type micro-channel capillary siphon type heat exchanger according to claim 1, wherein the pump-driven condensation heat release unit and the pump-driven evaporation heat-absorbing unit are composed of flat micro-channel capillary siphon tubes, high thermal conductivity fins The flat micro-channel capillary siphons are arranged side by side in multiple rows, and the high thermal conductivity fins are located between the flat micro-channel capillary siphons, and both sides are welded to the side of the flat micro-channel capillary siphons. , the ends of the flat micro-channel capillary siphon are connected with the working fluid sink. 6.根据权利要求4或5所述的分离式微槽道毛细虹吸管式热交换机,其特征在于,所述扁平微槽道毛细虹吸管外形为矩形或梯形;根据热交换机工作环境温度,内部的微槽道截面形状为工字型、四边形或三角形。6. The separated micro-channel capillary siphon type heat exchanger according to claim 4 or 5, wherein the flat micro-channel capillary siphon has a rectangular or trapezoidal shape; The cross-sectional shape of the track is I-shaped, quadrilateral or triangular. 7.根据权利要求1所述的分离式微槽道毛细虹吸管式热交换机,其特征在于,当室外环境温度较低时,热交换机处于被动自循环工作模式,此时驱动泵不启动,工质在热驱动力及毛细驱动压差作用下自发地进行循环,实现热量的排放;当室外环境温度较高,机柜内部温度超出警戒值时,热交换机进入主动泵驱工作模式,驱动泵启动并为工质循环提供一个额外的循环驱动力。7. The separated micro-channel capillary siphon type heat exchanger according to claim 1, is characterized in that, when the outdoor ambient temperature is low, the heat exchanger is in a passive self-circulation working mode, the drive pump is not started at this moment, and the working medium is Under the action of thermal driving force and capillary driving pressure difference, it circulates spontaneously to realize heat discharge; when the outdoor ambient temperature is high and the internal temperature of the cabinet exceeds the warning value, the heat exchanger enters the active pump driving mode, and the driving pump starts and works for the work. The mass circulation provides an additional circulatory driving force.
CN201920777817.8U 2019-05-28 2019-05-28 Separated microchannel siphon type heat exchanger Active CN210321359U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110145953A (en) * 2019-05-28 2019-08-20 苏州科技大学 A separate microchannel capillary siphon heat exchanger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110145953A (en) * 2019-05-28 2019-08-20 苏州科技大学 A separate microchannel capillary siphon heat exchanger

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