CN203704352U - Condenser for deeply recovering condensed water latent heat in smoke discharged by gas-fired boiler - Google Patents

Condenser for deeply recovering condensed water latent heat in smoke discharged by gas-fired boiler Download PDF

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Publication number
CN203704352U
CN203704352U CN201420073823.2U CN201420073823U CN203704352U CN 203704352 U CN203704352 U CN 203704352U CN 201420073823 U CN201420073823 U CN 201420073823U CN 203704352 U CN203704352 U CN 203704352U
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China
Prior art keywords
condenser
boiler
condensed water
heat exchanger
latent heat
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Expired - Lifetime
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CN201420073823.2U
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Chinese (zh)
Inventor
刘亮
宿新天
郭少春
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BAODING JINNENG HEATEXCHANGE EQUIPMENT Co Ltd
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BAODING JINNENG HEATEXCHANGE EQUIPMENT Co Ltd
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Priority to CN201420073823.2U priority Critical patent/CN203704352U/en
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

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  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The utility model discloses a condenser for deeply recovering condensed water latent heat in smoke discharged by a gas-fired boiler. The condenser comprises a condenser casing and heat exchange tubes, wherein a smoke tank is arranged in the condenser casing, the lower portion of the condenser is provided with a cooling water inlet, the upper portion of the condenser is provided with a hot water outlet, and a condensed water outlet is arranged at the bottom of the condenser. The heat exchange tubes are arranged inside the condenser casing and inserted into the smoke tank in a reciprocating mode. The heat exchange tubes comprise base tubes, and spiral grooves are formed in the inner walls of the base tubes. The outer walls of the base tubes are provided with heat transfer fins. The condenser is arranged in a boiler flue, can fully recover the steam latent heat in the smoke and enables the heat efficiency of the boiler to be remarkably improved.

Description

The degree of depth reclaims the condenser of condensed water latent heat in gas fired-boiler smoke evacuation
Technical field
The utility model relates to the industrial circles such as HVAC, air-conditioning, metal heat treatmet, metallurgy, forging, relates in particular to the condenser of condensed water latent heat in the smoke evacuation of a kind of degree of depth recovery gas fired-boiler.
Background technology
Widely used gas fired-boiler in the industrial circles such as heat supply, HVAC, air-conditioning, metal heat treatmet, metallurgy, forging, produces steam and hot water and is widely used in production and life, and the thermal efficiency of gas fired-boiler is the leading indicator of weighing boiler quality.
The thermal loss of traditional industrial gas furnace mainly occurs in following three aspects: (1) body of heater radiation loss; (2) incomplete combustion loss (electric furnace does not exist this); (3) smoke exhaust heat loss.Obviously the Basic Ways that, improves the flame class industrial furnace thermal efficiency will be made an effort from above three aspects exactly.Wherein flue gas loss is one maximum in boiler heat loss, account for 70~80% of boiler heat loss, generally reach 150~190 DEG C of left and right, this part heat comprises the latent heat of water vapour in obvious heat of smoke and flue gas, therefore, reduce boiler exhaust gas loss, absorb the discharge that heat in smoke evacuation not only can economize on resources but also can reduce carbon dioxide.
Due to the existence of the problems referred to above, the inventor carries out research and analysis to existing condenser technology, to can produce the degree of depth that makes full use of heat in flue gas and reduce CO2 emission and reclaim the condenser of condensed water latent heat in gas fired-boiler smoke evacuation.
Summary of the invention
In order to address the above problem, the inventor has carried out with keen determination, found that: by condenser is set, condenser is positioned in boiler flue, absorbs heat make cooling water heating with condenser; This condenser comprises: condenser shell and its inner smoke box, and heat exchanger tube; Smoke box two ends are connected with the flue of chimney and boiler body respectively; On condenser shell wall, offer cooling water inlet, hot water outlet, on smoke box and condenser shell wall, all offer the condensation-water drain interconnecting; Wherein, in condenser shell, be provided with heat exchanger tube; Heat exchanger tube is reciprocally through smoke box; Heat exchanger tube comprises the base tube that cross section is rounded, and base tube inwall is provided with spiral grooves; Base tube outer wall is provided with thermofin; Thereby complete the utility model.
The utility model object is to provide following aspect:
(1) degree of depth reclaims the condenser of condensed water latent heat in gas fired-boiler smoke evacuation, it is characterized in that, this condenser 2 comprises:
Condenser shell 9, its inside arranges smoke box 5, and stretch out from condenser shell 9 at smoke box 5 two ends, and smoke box 5 two ends are connected with the flue 3a of chimney 1 and boiler body 3 respectively, and it is communicated with position and is all positioned at condenser shell 9 outsides; With
Heat exchanger tube 8, it is arranged at condenser shell 9 inside, on described heat exchanger tube 8 inwalls, is provided with spiral grooves 8b, on described heat exchanger tube 8 outer walls, is provided with thermofin 8c;
Wherein, between smoke box and chimney, having an area of pipeline 4 by flue gas is connected; On described condenser shell 9 walls, offer respectively cooling water inlet 6 and hot water outlet 10, the two ends of heat exchanger tube 8 are connected with hot water outlet 10 with cooling water inlet 6 respectively; On condenser shell 9 walls He on smoke box wall, all offer the condensation-water drain 7 being interconnected.
(2) according to the condenser of condensed water latent heat in the degree of depth recovery gas fired-boiler smoke evacuation above-mentioned (1) Suo Shu, it is characterized in that: described heat exchanger tube 8 comprises base tube 8a, and wherein base tube 8a inwall is provided with spiral grooves 8b, and base tube outer wall is provided with thermofin 8c.
(3) according to the condenser of condensed water latent heat in the degree of depth recovery gas fired-boiler smoke evacuation above-mentioned (1) Suo Shu, it is characterized in that: the gash depth of described spiral grooves 8b is 0.5~0.7mm; The groove width of spiral grooves is below 0.7mm; The groove pitch of spiral grooves is 3~5mm; The helical angle of spiral grooves is 30 °.
(4) according to the condenser of condensed water latent heat in the degree of depth recovery gas fired-boiler smoke evacuation above-mentioned (1) Suo Shu, it is characterized in that: described thermofin 8c is spiral fin, and thermofin is made up of aluminium alloy, the fin thickness of thermofin is 0.5~1mm.
(5) according to the condenser of condensed water latent heat in the degree of depth recovery gas fired-boiler smoke evacuation above-mentioned (1) Suo Shu, it is characterized in that: heat exchanger tube 8 is positioned at condenser shell 9 inside, and reciprocally through smoke box 5, heat exchanger tube and the sealing of smoke box link position.
(6) reclaim the condenser of condensed water latent heat in gas fired-boiler smoke evacuation according to the degree of depth above-mentioned (1) Suo Shu, it is characterized in that: heat exchanger tube is positioned on the outer wall of the outer connecting bend part of smoke box does not have thermofin, there is no spiral grooves on inwall.
(7) according to the condenser of condensed water latent heat in the degree of depth recovery gas fired-boiler smoke evacuation above-mentioned (1) Suo Shu, it is characterized in that: the smoke discharging pipe that flue gas circumference pipeline 4 is hollow, its outside one end is pyramid-shaped, and it is cylindric that the other end is, and two ends seamlessly transit.
(8) according to the condenser of condensed water latent heat in the degree of depth recovery gas fired-boiler smoke evacuation above-mentioned (7) Suo Shu, it is characterized in that: one end that flue gas circumference pipeline 4 is prism-shaped is connected with smoke box 5, flue gas circumference cylindrical one end of pipeline 4 is connected with chimney 1.
The beneficial effects of the utility model are:
(1) utilize the latent heat of steam in condenser recovered flue gas, the energy utilization rate of boiler is improved greatly;
(2) utilize condenser to heat to cooling water, for boiler water supply or be the heating of residential building, office building, make the economic benefit of boiler better;
(3) heat exchanger tube base tube inwall is provided with spiral grooves, make for example cooling water of cooling fluid in pipe, produce screw and have certain radial velocity, thereby heat convection in enhanced tube is strengthened whole diabatic process;
(4) heat exchanger tube base tube inwall is provided with spiral grooves, and this heat exchanger tube is easy to processing in enormous quantities fast, and Composite Walls is significantly improved, and reduces manufacturing cost;
(5) helical angle of the spiral grooves of heat exchanger tube base tube and pitch can be adjusted, change and take into account flow resistance in ground in process, make this condenser range of application wide;
(6) heat exchanger tube base tube outer wall is provided with thermofin, makes to increase with the contact area of flue gas, is equivalent to increase the coefficient of heat transfer outside pipe, strengthening heat transfer;
(7) boiler of condenser being installed is compared with general gas boiler, and by existing country mark fuel, taking low heat value as benchmark, this boiler thermal output improves 10% left and right, and boiler efficiency approaches 100%; Exhaust gas temperature is lower than 50 DEG C, and nitrogen oxide emission is 30ppm;
(8) thermal efficiency of the boiler of installation condenser is high, energy-saving corrosion-resisting, and floor space is little, is easy to safeguard, reliable.
Brief description of the drawings:
Fig. 1 illustrates the working state structure schematic diagram that reclaims the condenser of condensed water latent heat in gas fired-boiler smoke evacuation according to the degree of depth of a kind of preferred embodiment of the utility model;
Fig. 2 illustrates the condenser contour structures schematic diagram that reclaims condensed water latent heat in gas fired-boiler smoke evacuation according to the degree of depth of a kind of preferred embodiment of the utility model;
Fig. 3 illustrates the heat exchange tube structure schematic diagram with thermofin and spiral grooves that reclaims the condenser of condensed water latent heat in gas fired-boiler smoke evacuation according to the degree of depth of a kind of preferred embodiment of the utility model.
Drawing reference numeral explanation:
1-chimney
2-condenser
3-boiler body
3a-flue
4-flue gas circumference pipeline
5-smoke box
6-cooling water inlet
7-condensation-water drain
8-heat exchanger tube
8a-base tube
8b-spiral grooves
8c-thermofin
9-condenser shell
10-hot water outlet
Detailed description of the invention
Below by drawings and Examples, the utility model is further described.Leading to these explanations, it is more explicit that feature of the present utility model and advantage will become.
Here special word " exemplary " means " as example, embodiment or illustrative ".Here needn't be interpreted as being better than or being better than other embodiment as " exemplary " illustrated any embodiment.Although the various aspects of embodiment shown in the drawings, unless otherwise indicated, needn't draw accompanying drawing in proportion.
According in a preferred embodiment of the present utility model, as shown in Fig. 1,2,3, provide the degree of depth to reclaim the condenser of condensed water latent heat in gas fired-boiler smoke evacuation, this condenser comprises:
Condenser shell 9, its inside arranges smoke box 5, and stretch out from condenser shell 9 at smoke box 5 two ends, and smoke box 5 two ends are connected with the flue 3a of chimney 1 and boiler body 3 respectively, and it is communicated with position and is all positioned at condenser shell 9 outsides;
Heat exchanger tube 8, it is arranged at condenser shell 9 inside, on described heat exchanger tube 8 inwalls, is provided with spiral grooves 8b, on described heat exchanger tube 8 outer walls, is provided with thermofin 8c.
Condenser of the present utility model is applicable to the boiler of hydrogeneous fuel gas buring, the flue gas that hydrogeneous fuel gas buring produces contains more steam, the condenser providing by the utility model can be passed to the cooling water in condenser effectively by the latent heat of steam in flue gas, make its intensification, thereby the latent heat of steam in recovered flue gas efficiently rapidly,, water after intensification can be used for heating etc., thereby reaches the object that makes full use of the energy.
One preferred embodiment in, as shown in Figure 2, condenser 2 comprises: the cooling water inlet 6, hot water outlet 10 and the condensation-water drain 7 that are arranged in respectively condenser shell 9 sidewalls, wherein on smoke box, offer on condensation-water drain 7 condenser shell 9 sidewalls and also offer condenser shell 9 sidewalls, condensation-water drain 7 is connected, and is convenient to the condensed water eductor condenser that steam liquefaction is produced;
One preferred embodiment in, as shown in Figure 1, 2, condenser shell 9 is connected with flue 3a, in described condenser shell 9, is provided with heat exchanger tube 8, described heat exchanger tube 8 comprises base tube 8a, base tube 8a inwall is provided with spiral grooves 8b; Base tube 8a outer wall is provided with thermofin 8c, and wherein, the two ends of heat exchanger tube 8 are connected with hot water outlet 10 with cooling water inlet 6 respectively.
The base tube 8a inwall of heat exchanger tube 8 is provided with spiral grooves, base tube 8a outer wall is provided with thermofin, the heat convection of spiral grooves enhanced tube inner fluid one side, make fluid in pipe, produce screw and there is certain radial velocity, spiral grooves is managed inner side heat convection ability by raising, increases the exchange capability of heat of this heat exchanger tube.Meanwhile, spiral goove barrel is convenient to processing in enormous quantities fast, and Composite Walls is significantly improved, and after Composite Walls improves, the pipe row of condenser will reduce.This had both reduced manufacturing cost, can make again the corresponding reduction of stagnation pressure of flue gas.Flow resistance can be adjusted, change and take into account to the helical angle of heat exchanger tube spiral groove and pitch easily in process.
The heat transfer process of condenser is: smoke gas flow is in the time of condenser shell 9, flue gas is directly passed to heat by the tube wall of heat exchanger tube 8 cooling water of base tube 8a inside, thereby carry out phase-change heat-exchange, belong to disposable heat exchange, simultaneously owing to being that to manage outer be flue gas to cooling water in pipe, the coefficient of heat transfer in pipe is managed outer large many, therefore total coefficient of heat transfer depends primarily on the coefficient of heat transfer outside pipe, by increase the area of outer surface without the monolithic extruded fin of cutting at base tube 18a outer surface, be equivalent to increase the coefficient of heat transfer outside pipe, thus the heat exchange of thermoexcell.
One preferred embodiment in, as shown in Fig. 1,2, multiple heat exchanger tubes form tube bank and are positioned in condenser shell.
One preferred embodiment in, as shown in Figure 2, condensation-water drain is positioned at the below of condenser, the top that hot water outlet is positioned at condenser.
One preferred embodiment in, as shown in Figure 2, flue gas circumference install pipeline is between smoke box and chimney, the smoke discharging pipe that flue gas circumference pipeline 4 is hollow, its outside one end is pyramid-shaped, and it is cylindric that the other end is, and two ends seamlessly transit, one end that flue gas circumference pipeline is pyramid-shaped is connected with smoke box, and flue gas circumference cylindrical one end of pipeline is connected with chimney.
In a preferred embodiment, as shown in Figure 3, the gash depth of spiral grooves 8b is 0.5~0.7mm; The groove width of spiral grooves is 0~0.7mm; The groove pitch of spiral grooves is 3~5mm; The helical angle of spiral grooves is 30 °.
In a preferred embodiment, as shown in Figure 3, described thermofin 8c is spiral fin, and thermofin is made up of albronze, and the fin thickness of thermofin is 0.5~1mm.Pitch and the helical angle of thermofin are adjustable, determine according to actual needs concrete size; Heat exchanger tube is that base tube is made up of copper pipe or steel pipe without the monolithic extruded finned tube of cutting, and thermofin is by aluminum alloy materials cold moudling.
In a preferred embodiment, as shown in Figure 3, base tube inside is provided with spiral grooves, and the quantity of spiral grooves can be one, can be also multiple, and the preferred quantity of the utility model is two.
In a preferred embodiment, as shown in Figure 2, heat exchanger tube is positioned on the outer wall of the outside connecting bend part of smoke box does not have thermofin, on inwall, there is no spiral grooves, or only have thermofin or only have spiral grooves, in order to save manufacturing cost at the sufficient bar of guarantee heat exchange, simplify installation procedure.
In the utility model, the arrow in accompanying drawing 2 represents flow direction, as the flow direction of the flow direction of the flow direction of flue gas, condensed water and cooling water.
In a preferred embodiment, the working media of this boiler is demineralized water.
In a preferred embodiment, the flue of condenser back adopts resistant material, guarantees the corrosion resistance of flue; Combustion system adopts the combustion system regulating in proportion, guarantees flameholding, efficient.
The beneficial effects of the utility model are:
(1) utilize the latent heat of steam in condenser recovered flue gas, the energy utilization rate of boiler is improved greatly;
(2) utilize condenser to heat to cooling water, for boiler water supply or be the heating of residential building, office building, make the economic benefit of boiler better;
(3) heat exchanger tube base tube inwall is provided with spiral grooves, make for example cooling water of cooling fluid in pipe, produce screw and have certain radial velocity, thereby heat convection in enhanced tube is strengthened whole diabatic process;
(4) heat exchanger tube base tube inwall is provided with spiral grooves, and this heat exchanger tube is easy to processing in enormous quantities fast, and Composite Walls is significantly improved, and reduces manufacturing cost;
(5) helical angle of the spiral grooves of heat exchanger tube base tube and pitch can be adjusted, change and take into account flow resistance in ground in process, make this condenser range of application wide;
(6) heat exchanger tube base tube outer wall is provided with thermofin, makes to increase with the contact area of flue gas, is equivalent to increase the coefficient of heat transfer outside pipe, strengthening heat transfer;
(7) boiler of condenser being installed is compared with general gas boiler, and by existing country mark fuel, taking low heat value as benchmark, this boiler thermal output improves 10% left and right, and boiler efficiency approaches 100%; Exhaust gas temperature is lower than 50 DEG C, and nitrogen oxide emission is 30ppm;
(8) thermal efficiency of the boiler of installation condenser is high, energy-saving corrosion-resisting, and floor space is little, is easy to safeguard, reliable.
More than combine preferred embodiment the utility model is illustrated, but these embodiments are only exemplary, only play illustrative effect.On this basis, can carry out multiple replacement and improvement to the utility model, these all fall in protection domain of the present utility model.

Claims (8)

1. the degree of depth reclaims the condenser of condensed water latent heat in gas fired-boiler smoke evacuation, it is characterized in that, this condenser (2) comprising:
Condenser shell (9), its inside arranges smoke box (5), stretch out from condenser shell (9) at smoke box (5) two ends, and smoke box (5) two ends are connected with the flue (3a) of chimney (1) and boiler body (3) respectively, and it is communicated with position and is all positioned at condenser shell (9) outside; With
Heat exchanger tube (8), it is arranged at condenser shell (9) inside, on described heat exchanger tube (8) inwall, is provided with spiral grooves (8b), on described heat exchanger tube (8) outer wall, is provided with thermofin (8c);
Wherein, between smoke box (5) and chimney (1), having an area of pipeline (4) by flue gas is connected; On described condenser shell (9) wall, offer respectively cooling water inlet (6) and hot water outlet (10), the two ends of heat exchanger tube (8) are connected with hot water outlet (10) with cooling water inlet (6) respectively; On condenser shell (9) wall He on smoke box wall, all offer the condensation-water drain (7) being interconnected.
2. the degree of depth according to claim 1 reclaims the condenser of condensed water latent heat in gas fired-boiler smoke evacuation, it is characterized in that: described heat exchanger tube (8) comprises base tube (8a), wherein base tube (8a) inwall is provided with spiral grooves (8b), and base tube outer wall is provided with thermofin (8c).
3. the degree of depth according to claim 1 reclaims the condenser of condensed water latent heat in gas fired-boiler smoke evacuation, it is characterized in that: the gash depth of described spiral grooves (8b) is 0.5~0.7mm; The groove width of spiral grooves is below 0.7mm; The groove pitch of spiral grooves is 3~5mm; The helical angle of spiral grooves is 30 °.
4. the degree of depth according to claim 1 reclaims the condenser of condensed water latent heat in gas fired-boiler smoke evacuation, it is characterized in that: described thermofin (8c) is spiral fin, and thermofin is made up of aluminium alloy, and the fin thickness of thermofin is 0.5~1mm.
5. the degree of depth according to claim 1 reclaims the condenser of condensed water latent heat in gas fired-boiler smoke evacuation, it is characterized in that: heat exchanger tube (8) is positioned at condenser shell (9) inside, and reciprocally through smoke box (5), heat exchanger tube (8) and the sealing of smoke box (5) link position.
6. the degree of depth according to claim 1 reclaims the condenser of condensed water latent heat in gas fired-boiler smoke evacuation, it is characterized in that: heat exchanger tube is positioned on the outer wall of the outer connecting bend part of smoke box does not have thermofin, there is no spiral grooves on inwall.
7. the degree of depth according to claim 1 reclaims the condenser of condensed water latent heat in gas fired-boiler smoke evacuation, it is characterized in that: flue gas circumference pipeline (4) is the smoke discharging pipe of hollow, and its outside one end is pyramid-shaped, and it is cylindric that the other end is, and two ends seamlessly transit.
8. the degree of depth according to claim 7 reclaims the condenser of condensed water latent heat in gas fired-boiler smoke evacuation, it is characterized in that: one end that flue gas circumference pipeline (4) is prism-shaped is connected with smoke box (5), flue gas circumference cylindrical one end of pipeline (4) is connected with chimney (1).
CN201420073823.2U 2014-02-20 2014-02-20 Condenser for deeply recovering condensed water latent heat in smoke discharged by gas-fired boiler Expired - Lifetime CN203704352U (en)

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CN201420073823.2U CN203704352U (en) 2014-02-20 2014-02-20 Condenser for deeply recovering condensed water latent heat in smoke discharged by gas-fired boiler

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Application Number Priority Date Filing Date Title
CN201420073823.2U CN203704352U (en) 2014-02-20 2014-02-20 Condenser for deeply recovering condensed water latent heat in smoke discharged by gas-fired boiler

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107504689A (en) * 2017-07-01 2017-12-22 太仓英达锅炉设备有限公司 Circulating type heating boiler
CN109883051A (en) * 2019-03-21 2019-06-14 西安交通大学 A kind of modular commercial gas-heating extruding aluminium alloy radiant box
CN112377808A (en) * 2020-11-27 2021-02-19 吴国胜 LNG natural gas condensing system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107504689A (en) * 2017-07-01 2017-12-22 太仓英达锅炉设备有限公司 Circulating type heating boiler
CN109883051A (en) * 2019-03-21 2019-06-14 西安交通大学 A kind of modular commercial gas-heating extruding aluminium alloy radiant box
CN109883051B (en) * 2019-03-21 2023-08-18 西安交通大学 A Modular Commercial Gas Heated Extruded Aluminum Alloy Radiant Furnace
CN112377808A (en) * 2020-11-27 2021-02-19 吴国胜 LNG natural gas condensing system

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