CN201876169U - Honeycomb composite heat exchange device and automobile tail gas heating system using same - Google Patents
Honeycomb composite heat exchange device and automobile tail gas heating system using same Download PDFInfo
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- CN201876169U CN201876169U CN2010206170465U CN201020617046U CN201876169U CN 201876169 U CN201876169 U CN 201876169U CN 2010206170465 U CN2010206170465 U CN 2010206170465U CN 201020617046 U CN201020617046 U CN 201020617046U CN 201876169 U CN201876169 U CN 201876169U
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Abstract
The utility model discloses a honeycomb composite heat exchange device, which relates to a heat exchange device for exchanging heat by combining a honeycomb structure with a plate type structure and an automobile tail gas heating system using the same. A cold working medium heat exchange channel (6) and a hot working medium heat exchange channel (7) are formed in a shell (1) by encircling a plurality of clapboards (8) in the shell (1), and are arranged closely in a honeycomb form; the inner two ends of the shell (1) are provided with a cold working medium collecting cavity (9) and a hot working medium collecting cavity (10); and the automobile tail gas heating system comprises a fan (12), an air filter (13), a temperature controller (14) and the heat exchange device. The honeycomb composite heat exchange device has the advantages of simple structure, small flow resistance, large unit volume heat transfer area, high heat transfer efficiency, good silencing effect and the like.
Description
Technical field
The utility model relates to a kind of cellular structure and combined Automotive Heating with Tail Gas system that carries out the heat-exchanger rig of heat exchange and use it of plank frame of adopting.
Background technology
Along with energy crisis and environment are increasingly serious, the heat transmission equipment that development and application is energy-efficient improves efficiency of energy utilization and has important practical significance.And augmentation of heat transfer is development of new heat transmission equipment, the core technology that improves heat exchange efficiency, as take to increase the heat exchanger effectiveness that secondary heat-transfer area (fin etc.) improves heat exchanger, but its rate of heat transfer has also increased respective flow resistance and pump merit simultaneously far below a heating surface.So the heat exchanger (or regenerator) of capturing and develop high-efficiency compact is very important, this is the sport technique segment of the previous weakness of order.
Various combustion machine such as internal combustion engine, gas turbine course of work exhaust gas discharged source has higher temperature, has greatly that thermal source has wasted, and causes that its thermal efficiency of cycle is low, specific fuel consumption is high, less economical.Regenerator is that gas turbine utilizes exhaust heat to add a kind of requisite unit of hot-air, raising intake air temperature and then the raising complete machine thermal efficiency.The various regenerators heat exchangers such as (heat exchangers) that provides in the market, can not satisfy the demand that thermal device further improves manufacturability and economy, cause the miniature gas turbine and the exhaust heat of internal combustion engine that are used for hybrid vehicle all not to be applied, wherein regenerator (heat exchanger) is one of series of key techniques of its application.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of simple in structure, flow resistance is little, the unit volume heat transfer area is big and heat transfer efficiency is high honeycomb fashion composite heat-exchange device is provided.
Technical solution of the present utility model is: honeycomb fashion composite heat-exchange device, comprise housing, the housing two ends are respectively equipped with cold working medium import, cold sender property outlet and hot working fluid import, the hot working fluid outlet, be provided with cold working medium heat exchanger channels and hot working fluid heat exchanger channels in the housing, described cold working medium heat exchanger channels and hot working fluid heat exchanger channels are to be surrounded by some dividing plates of being located in the housing, cold working medium heat exchanger channels and hot working fluid heat exchanger channels are cellular tight arrangement, two ends in the housing are equipped with cold working medium collection chamber and hot working fluid collection chamber, cold working medium heat exchanger channels, cold working medium import is connected hot working fluid heat exchanger channels by the manifold trunk that is arranged on cold working medium heat exchanger channels two ends with cold working medium collection chamber with cold sender property outlet, outlet is connected with the hot working fluid collection chamber with hot working fluid in the hot working fluid import.
The Automotive Heating with Tail Gas system, comprise blower fan, air cleaner and temperature controller, it also comprises aforesaid heat-exchanger rig, the hot working fluid import of heat-exchanger rig is connected with the engine gas outlet, the cold sender property outlet of heat-exchanger rig is connected with temperature controller, and the cold working medium import of heat-exchanger rig is connected with air cleaner with blower fan successively.
Technique effect of the present utility model is: it have simple in structure, flow resistance is little, the unit volume heat transfer area is big and the heat transfer efficiency advantages of higher, it has good noise elimination effect simultaneously.
Description of drawings
Fig. 1 is the sectional structure schematic diagram of the utility model heat-exchanger rig;
Fig. 2 is the cross-sectional structural representation of the utility model heat-exchanger rig;
Fig. 3 is the structural representation of the utility model heating system;
Fig. 4 is the sectional structure schematic diagram of the utility model heating system temperature controller.
The specific embodiment
As illustrated in fig. 1 and 2, honeycomb fashion composite heat-exchange device, comprise housing 1, housing 1 two ends are respectively equipped with cold working medium import 2, cold sender property outlet 3 and hot working fluid import 4, hot working fluid outlet 5, be provided with cold working medium heat exchanger channels 6 and hot working fluid heat exchanger channels 7 in the housing 1, described cold working medium heat exchanger channels 6 and hot working fluid heat exchanger channels 7 are to be surrounded by some dividing plates of being located in the housing 18, cold working medium heat exchanger channels 6 and hot working fluid heat exchanger channels 7 are cellular tight arrangement, two ends in the housing 1 are equipped with cold working medium collection chamber 9 and hot working fluid collection chamber 10, cold working medium heat exchanger channels 6, cold working medium import 2 is connected with cold working medium collection chamber 9 by the manifold trunk 11 that is arranged on cold working medium heat exchanger channels 6 two ends with cold sender property outlet 3; Hot working fluid heat exchanger channels 7, hot working fluid import 4 and hot working fluid outlet 5 are connected with hot working fluid collection chamber 10.
Described manifold trunk 11 is the carinate cold and hot heat-exchange working medium passage two ends of being fixed in of comb, it communicates with cold working medium collection chamber 9 in the one or both ends opening, broach communicates with the honeycomb mouth, and an end manifold trunk 11 that connects in engine export can be by strengthening appearance and size and carrying out convex-concave and handle modes such as increasing absorptivity and improve heat exchange efficiency.
Described cold working medium heat exchanger channels 6 and hot working fluid heat exchanger channels 7 are square or hexagon.
As shown in Figure 3, the Automotive Heating with Tail Gas system, comprise blower fan 12, air cleaner 13 and temperature controller 14, it is characterized in that, it comprises heat-exchanger rig as claimed in claim 1, the hot working fluid import 4 of heat-exchanger rig is connected with engine 15 gas outlets 16, and the cold sender property outlet 3 of heat-exchanger rig is connected with temperature controller 14, and the cold working medium import 2 of heat-exchanger rig is connected with air cleaner 13 with blower fan 12 successively.
The entrance point of described air cleaner 13 is connected with the transfer valve 23 that is used for the inside and outside ventilation of car.
As shown in Figure 4, described temperature controller 14 is by warm-air pipe 17 and be enclosed within its outside cool air hose 18 and constitute, the olive shape housing that cool air hose 18 expands for top, warm braw outlet 19 is drawn and be provided with in cool air hose 18 upper ends in, gathering place in the upper end in the cool air hose 18 is hinged with some folded mutually arc laminations 20 in the form of a ring, arc lamination 20 is the lotus flap and arranges, the inboard of arc lamination 20 is provided with the expansion loop 21 that can vary with temperature and expand and shrink in the below of hinged place, the outer end of expansion loop 21 is against on each arc lamination 20, expansion loop 21 can be hinged on the inwall of arc lamination 20, on the tube wall that hangs over cool air hose 18 also capable of hoisting, cool air hose 18 lower ends are provided with cold wind import 22, warm-air pipe 17 suitable for reading is located at expanding in the place of cool air hose 18 tops, the lower loop of arc lamination 20 is on the outer wall at warm-air pipe 17 places suitable for reading, the end opening of warm-air pipe 17 is connected with the cold sender property outlet 3 of heat-exchanger rig, and the cold wind import 22 of cool air hose 18 is connected with blower fan 12 outlets.
Heat-exchanger rig all adopts once board-like and once positive hexagon thin-walled surface heat transfer or once positive four limit thin-walled surface heat transfers.Cold and hot working medium is at first carried out heat transmission at comb ridge wall with the heat radiation form, passes through the honeycomb thin-walled mainly with to streamed direct heat transfer.Comb ridge and honeycomb thin-walled simultaneously are that cold working medium, another side are hot working fluids; the thin-walled temperature difference approaches the cold and hot working medium temperature difference; heat transfer speed is fast, heat exchange rate is higher; its compact conformation, mechanical strength height, unit volume heat transfer area are big; will be that middle-size and small-size gas turbine and afterheat of IC engine reclaim requisite unit, also be the ideal equipment that exhaust heat of internal combustion engine, cooling residual heat reclaim.
This structure has the heat transfer area compact conformation, specific area is big, trafficability performance good, high temperature resistant, corrosion-resistant, be difficult for that dust stratification stops up, not blending of cold fluid and hot fluid, it is relatively little not have the problem of leaking out, no tumbler, inactivity consumption, metal consumption.
The gas that internal combustion engine is discharged by high temperature and with periodically, the flow-disturbing formed of eddy current and the air column resonance noise mist of pulsing, under identical equivalent diameter, same traffic situation, this air communication is crossed the regular hexagon passage than big by the thermal agitation of tubular passage, can produce vortex at six angle point places, the blending and the disturbance of fluid have been strengthened, the coefficient of heat transfer is higher, and promptly exhaust heat of internal combustion engine is more suitable for reclaiming with positive hexagon checkerwork cell structure.At I. C. engine exhaust characteristic and metal material characteristic (high temperature resistant, corrosion-resistant, processing complexity, mechanical strength, fusing point, price etc.), in conjunction with heat-conduction principle, be optimized and be designed to front and back comb ridge structure size difference, use different materials, to reach the best heat transfer state.
It has solved owing to improving heat exchange area per unit volume and has caused technical barriers such as crushing is big, manufacture difficulty big, easy obstruction, solves cold and hot working medium simultaneously and imports and exports design processing than technical problems such as difficulties; It not only is applicable to gas-gas type working medium heat exchange, and the working medium that also is suitable for various heat exchange coefficients such as gas-liquid, liquid-liquid is carried out heat exchange.It has advantages such as fluid flow resistance is little, simple and compact for structure, intensity is sturdy and durable, performance is safe and reliable, application is extensive, simultaneously it has the function of eliminating exhaust noise, being difficult for producing resonance, and it is to realize that internal combustion engine raises the efficiency, reduces the critical component of fuel consumption.
This honeycomb fashion composite heat-exchange device, comb ridge heat exchange body and honeycomb heat exchange body can be made with semi-solid-state metal forming technique or soldering tech, and shell is square, cuboid, positive hexagonal prism or pipe body.
Regular hexagon checkerwork cell structure is compared with four limits with triangle, and stress distribution is even, Stability Analysis of Structures, the difficult obstruction.Do the time spent when being subjected to stress, stress can spread out from other both direction, so this structural strength relatively optimizes, and this device is more suitable for working under vibration environment.
The cold and hot working medium of positive hexagon checkerwork cell structure is to finish heat by the metal heat-conducting of forming checkerwork cell to transmit, because the regular hexagon lattice septum is thinner than other structure wall thickness under same intensity, so heat conduction is faster.
Positive hexagon checkerwork cell heat exchange structure is compact more than other structures, can improve heat exchange efficiency by increasing checkerwork cell quantity, but the too high while of this numerical value also bring drag losses to increase, concrete area should be comprehensively factor optimal design in many ways.
Hot working fluid (gas or liquid) Temperature Distribution on the positive hexagon checkerwork cell cross section is similar with VELOCITY DISTRIBUTION, their maximum is in the center of passage, the strength of heat exchange is in the midpoint on each limit on six limits, and a little less than near heat exchange six angle points, but it is stronger to eliminate the noise.When sound wave passes through the corner, border of hexagonal, will produce the ability of the resistance higher hamonic wave that manys than anistree ten jiaos big.
Under the identical situation of heat storage height, adopt the heat exchanger of hexagon honeycomb to have best mobile performance, i.e. the flow resistance minimum.
Positive square opening honeycomb channel has very big specific area, under the identical situation of heat transfer intensity, adopt the heat exchanger volume minimum of square opening honeycomb, but air viscous force in it and frictional force is greater than the hexagon honeycomb.
This heat exchanger is heat exchange heat exchanger of a kind of first type surface, first type surface formula and plate-fin regenerator all are being better than shell-and-tube heat exchanger aspect the thermal efficiency, compactness and the heat flow density, and first type surface formula heat exchanger is not because of there being each seed wing shape, so manufacturing process is simple relatively, and be easier to produce in batches, cost is lower.
This heat exchanger is used for the miniature gas turbine of backheat circulation, and market prospects are very wide.Because of its moving component is few, simple and compact for structure, long service life, thermal efficiency height, pollutant emission is little, operational reliability is high, manufacturing cost and maintenance cost are low, the market competitiveness is much larger than internal combustion engine; Simultaneously because the birth of high-speed engine has been removed the heavy decelerator that the combustion machine is connected with generator again, so following small gas turbine generator market prospects are more immeasurable.
This device has noise elimination function.This regenerator is equivalent to the muffler of double-section expansion chamber of a band inner connection tube.Middle honeycomb channel plays the dissipative muffler effect.Honeycomb channel two ends hot working fluid chamber is different because of the cross section with hot working fluid turnover tube connector, formed when hot working fluid flows to the variation section part, to produce and expand or contraction, play the effect of expansion chambers silencer, it also is a kind of of reactive muffler, so this structure heat exchanger has the complex muffler function of dissipative muffler and reactive muffling simultaneously.
Because of the characteristics of honeycomb channel own, thus its be difficult for front and back hot working fluid chamber between produce resonance, do not have lower-cut-off frequency yet, assurance medium and low frequency noise has the effect of eliminating the noise preferably.
Because of positive hexagon honeycomb channel has hexagonal characteristic and each channel cross-sectional flow area less, the short high-frequency noise sound wave of some wavelength of internal combustion engine pulsation exhaust noise, also can with the contact friction of hexagon honeycomb channel wall, guaranteed that high-frequency noises has noise elimination effect, but specific design wants emphasis to prevent the regenerated noise that the sympathetic response of honeycomb channel air column produces.
This structure can the side's of being processed into body, also can process cuboid or circle, to be suitable for the varying environment demand.Cold and hot in addition working medium aisle spare ratio can be formed multiple ratios such as 1:1 and 1:2, to satisfy gas or the liquid working medium that different flow, different in flow rate, difference are put (suction) hot coefficient, to reach the thermal balance relation of heat release and heat absorption.
Cold and hot working medium turnover honeycomb heat exchanger can adopt multiple turnover method of attachment, as adopts each one-in-and-one-out of cold and hot working medium; Hot working fluid one-in-and-one-out, cold working medium two are advanced two and are gone out; Hot working fluid with two advance two to go out, cold working medium one-in-and-one-out; Cold-hot type matter is all advanced two with two and is gone out, and is specifically taken all factors into consideration by installation environment which kind of is used.
The heat exchange area of honeycomb heat exchanger unit volume, mainly by single aisle spare (being orthohexagonal length of side decision) and passage length decision, other mainly influence the resistance size of this heat exchanger, will take all factors into consideration during design.Under the prerequisite that satisfies the heat exchange amount, the working medium flow resistance is the smaller the better, and to improve the whole efficiency of device, simultaneously cold and hot working medium is imported and exported and cold working medium comb ridge structure is come in and gone out connects smoothing processing, with further reduction local resistance loss.
Satisfying under certain heat exchange efficiency and the pressure drop prerequisite, realizing heat exchanger volume and minimize weight, will consider that also its structure and layout should be tried one's best and the parent form machine cooperates, reducing circulation loss, reduced in size.
The volume flow of hot flue gas was more bigger than cold working medium when gas-gas exchanged, and therefore, adopted the 1:1 honeycomb channel, came the balance heat exchange with the refrigerant flow rate difference.
During the exchange of gas-liquid since the volume flow of cold and hot working medium and hot working fluid (gas) exothermic coefficient far below the heat absorption coefficient of cold worker (liquid), consider that at first the hot working fluid circulation passage designs (the 1:2 honeycomb channel of positive hexagon checkerwork cell is better) greater than cold working medium passage, consider again with the not equal composite factor of cold (liquid) heat (flue gas) refrigerant flow rate, to reach the heat exchange balance.
The cold working medium of this heat exchanger (air) discrepancy honeycomb ceramics adopts comb ridge formula structures to converge by manifold trunk 11.Cold and hot working medium adopts concurrent to arrange, to strengthen the cold and hot working medium inlet temperature difference, more helps the heat radiation of hot waste gas, is unlikely to make cold sender property outlet temperature to be higher than the hot working fluid outlet temperature again simultaneously, safer like this is used for heating in the compartment.
Cold working medium inlet comb ridge structure position, owing to be in the higher environment of exhaust entrance temperature, need be connected into the red copper sheet punching press soldering high temperature resistant, that heat conductivility is good and be with certain undulatory comb epimere formula structure, that its outer wall surface (i.e. the heat-transfer surface that contacts with hot working fluid) adds is black, metal oxide layer etc., improve absorptivity and handle, and helps radiation heat transfer more.This comb epimere formula radiant heat transfer area size is specifically decided by design, makes hot working fluid enter albronze honeycomb mouth place temperature in principle and is not higher than 300 ℃ and is advisable.During gas-liquid heat exchange, material is all selected albronze for use.
Cold sender property outlet comb ridge formula aggregation infrastructure, it is the smaller the better to consider that mainly this working medium derives resistance, and helps heat convection and get final product, and does not consider the radiation heat transfer purpose.Its material is selected for use consistent with the honeycomb ceramics material.Reached and used metal material of different nature under the different temperatures environment, realized not only saving material but also be beneficial to series batch process processing.
Honeycomb ceramics was connected into cellular four or the hexagon pore structure with the sheet copper punching press soldering of good heat conductivity before the metal semi-solid one-step die casting is realized industrialization, this one mainly carries out heat transmission with convective methods and is auxilliary with the method for radiating heat transfer.
In the warm braw temperature of normal design and when following, arc lamination 20 closely contacts with warm-air pipe 17 tube walls, and this moment, hot blast directly entered constant temperature warm braw passage by warm-air pipe 17, and directly giving in the car provides hot blast; When the hot blast temperature in the warm-air pipe surpassed design temperature, expansion loop 21 raise with temperature and outwards expands, and promoting arc lamination 20 be axially outer expansion with the hinged place, and the cold wind that are about in the cool air hose 18 are introduced, and with length on the control temperature, reach the purpose of constant temperature.
Claims (5)
1. honeycomb fashion composite heat-exchange device, comprise housing (1), housing (1) two ends are respectively equipped with cold working medium import (2), cold sender property outlet (3) and hot working fluid import (4), hot working fluid outlet (5), be provided with cold working medium heat exchanger channels (6) and hot working fluid heat exchanger channels (7) in the housing (1), it is characterized in that, described cold working medium heat exchanger channels (6) and hot working fluid heat exchanger channels (7) are to be surrounded by some dividing plates of being located in the housing (1) (8), cold working medium heat exchanger channels (6) and hot working fluid heat exchanger channels (7) are cellular tight arrangement, two ends in the housing (1) are equipped with cold working medium collection chamber (9) and hot working fluid collection chamber (10), cold working medium heat exchanger channels (6), cold working medium import (2) is connected hot working fluid heat exchanger channels (7) with cold sender property outlet (3) by the manifold trunk (11) that is arranged on cold working medium heat exchanger channels (6) two ends with cold working medium collection chamber (9), hot working fluid import (4) is connected with hot working fluid collection chamber (10) with hot working fluid outlet (5).
2. honeycomb fashion composite heat-exchange device as claimed in claim 1 is characterized in that, described cold working medium heat exchanger channels (6) and hot working fluid heat exchanger channels (7) are square or hexagon.
3. honeycomb fashion composite heat-exchange device as claimed in claim 1 is characterized in that, described manifold trunk (11) is the carinate cold and hot heat-exchange working medium passage two ends of being fixed in of comb, and it communicates with cold working medium collection chamber (9) in the one or both ends opening.
4. Automotive Heating with Tail Gas system, comprise blower fan (12), air cleaner (13) and temperature controller (14), it is characterized in that, it comprises heat-exchanger rig as claimed in claim 1, the hot working fluid import (4) of heat-exchanger rig is connected with engine (15) gas outlet (16), the cold sender property outlet (3) of heat-exchanger rig is connected with temperature controller (14), and the cold working medium import (2) of heat-exchanger rig is connected with air cleaner (13) with blower fan (12) successively.
5. Automotive Heating with Tail Gas as claimed in claim 4 system, it is characterized in that, described temperature controller (14) is by warm-air pipe (17) and be enclosed within its outside cool air hose (18) formation, the housing that cool air hose (18) expands for top, warm braw outlet (19) is drawn and be provided with in cool air hose (18) upper end in, gathering place in the upper end in the cool air hose (18) is hinged with some folded mutually arc laminations (20) in the form of a ring, the inboard of arc lamination (20) is provided with the expansion loop (21) that can vary with temperature and expand and shrink in the below of hinged place, the outer end of expansion loop (21) is against on each arc lamination (20), cool air hose (18) lower end is provided with cold wind import (22), warm-air pipe (17) suitable for reading is located at expanding in the place of cool air hose (18) top, the lower loop of arc lamination (20) is on the outer wall at warm-air pipe (17) place suitable for reading, the end opening of warm-air pipe (17) is connected with the cold sender property outlet (3) of heat-exchanger rig, and the cold wind import (22) of cool air hose (18) is connected with blower fan (12) outlet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206170465U CN201876169U (en) | 2010-11-22 | 2010-11-22 | Honeycomb composite heat exchange device and automobile tail gas heating system using same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206170465U CN201876169U (en) | 2010-11-22 | 2010-11-22 | Honeycomb composite heat exchange device and automobile tail gas heating system using same |
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| CN201876169U true CN201876169U (en) | 2011-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206170465U Expired - Fee Related CN201876169U (en) | 2010-11-22 | 2010-11-22 | Honeycomb composite heat exchange device and automobile tail gas heating system using same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678371A (en) * | 2020-06-19 | 2020-09-18 | 贵州凯宏汇达冷却系统有限公司 | Heat exchanger and liquid cooling source equipment based on same |
| CN112944740A (en) * | 2021-03-22 | 2021-06-11 | 西安工业大学 | Air-conditioning temperature zone layered type variable porosity honeycomb structure heat regenerator |
-
2010
- 2010-11-22 CN CN2010206170465U patent/CN201876169U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678371A (en) * | 2020-06-19 | 2020-09-18 | 贵州凯宏汇达冷却系统有限公司 | Heat exchanger and liquid cooling source equipment based on same |
| CN111678371B (en) * | 2020-06-19 | 2022-02-18 | 贵州凯宏汇达冷却系统有限公司 | Heat exchanger and liquid cooling source equipment based on same |
| CN112944740A (en) * | 2021-03-22 | 2021-06-11 | 西安工业大学 | Air-conditioning temperature zone layered type variable porosity honeycomb structure heat regenerator |
| CN112944740B (en) * | 2021-03-22 | 2022-05-20 | 西安工业大学 | Air conditioning temperature zone layered variable porosity honeycomb regenerator |
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