CN101957105A - Heat exchanger for improving drainage performance - Google Patents
Heat exchanger for improving drainage performance Download PDFInfo
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- CN101957105A CN101957105A CN 201010512694 CN201010512694A CN101957105A CN 101957105 A CN101957105 A CN 101957105A CN 201010512694 CN201010512694 CN 201010512694 CN 201010512694 A CN201010512694 A CN 201010512694A CN 101957105 A CN101957105 A CN 101957105A
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Abstract
The invention relates to a heat exchanger for improving drainage performance, which comprises an upper collecting pipe, a lower collecting pipe and a plurality of flat pipes, wherein the flat pipes are vertically connected between the upper collecting pipe and the lower collecting pipe; a plurality of fins are arranged between the adjacent flat pipes; the fins are divided into permeable fins and watertight fins; the permeable fins form a plurality of permeable sections; the watertight fins form a plurality of watertight sections; and the permeable sections and the watertight sections are distributed at intervals. By distributing the watertight fins among the permeable fins at intervals, condensate water collected by the seam flushing fins at the watertight fins can be drained out of the heat exchanger, and the amount of the condensate water flowing through the permeable fins at the lower part is reduced. Meanwhile, by adopting the watertight fins with convex edges, the intercepted condensate water more favorably drops from the fins by the convex edges, and the fins at the lower part is not influenced. Furthermore, the fins are inclined relative to the windward side and are beneficial to the drainage of the condensate water, thereby improving the drainage performance of the heat exchanger so as to improve the heat exchange performance of the heat exchanger.
Description
Technical field
The present invention relates to a kind of heat exchanger, especially relate to a kind of parallel-flow heat exchanger that can improve discharge condensed water performance.
Background technology
Parallel-flow heat exchanger surface as evaporimeter or heat pump outdoor heat exchanger the time can produce condensed water, discharge the performance of condensed water in order to improve heat exchanger, header is horizontally disposed with and flat tube vertically is installed between the header, be provided with fin between the header, fin generally comprises the active section and the linkage section that is connected active section that section is a straight line, and heat exchange generally is to realize by active section, so general said fin is meant the active section of fin.Just because header is positioned at both sides up and down, and the fin that adopts between the middle flat tube and the active section of air heat exchange have at fin under the situation of calking, condensed water can be realized draining along the fin of calking below top fin flows to.But the water with fixed attention of superposed fin is finally drained need be through all fins below it, and water has influenced heat exchange in flow process, and can form windage.So manufacturer and user break away from heat exchanger as soon as possible, and heat exchanging and ventilation do not have a negative impact again after wishing to coagulate water generates.Therefore, how after producing, condensed water in time condensed water to be discharged from fin, make condensed water no longer influence following fin heat exchange, reaching no longer increases flowing resistance, it is big more to reduce the condensation water quantity that the fin of this accumulation below avoiding flow through, heat exchange and ventilation situation are poor more, are the problems that this area is just solving in active research.Particularly under the operating mode that may produce frosting, the heat exchanger bottom just was easy to freeze originally, and the water of all condensed waters and defrost all flows to the bottom, will be greatly worsens the situation of defrosting, made frosting thicker more being difficult for of bottom eliminate.
Summary of the invention
The technical problem to be solved in the present invention is that part overcomes above-mentioned the deficiencies in the prior art, proposes a kind of heat exchanger that improves drainage performance that has.
Technical scheme of the present invention is: a kind of heat exchanger that improves drainage performance, comprise header and lower header, vertically be connected a plurality of flat tubes between header and the lower header, between adjacent flat tube, be provided with some fins, it is characterized in that: described fin comprises permeable fin and fluid-tight fin, permeable fin is formed a plurality of permeable section, and fluid-tight fin is formed a plurality of waterproof section, arranges with waterproof spacer segment for permeable section.
Described arbitrary permeable section number of fins is greater than arbitrary waterproof section number of fins, and the fin between the adjacent flat tube is arranged into rectangle or trapezoidal or rhombus or waveform.
Described arbitrary permeable section comprises 8～500 permeable fins.
Described permeable fin is the calking sheet.
Described arbitrary waterproof section comprises 1～3 waterproof fin.
Described waterproof fin is plain film or is provided with projection upwards on plain film.
Described a plurality of permeable section number of fins that is comprised is identical.Perhaps described a plurality of permeable section number of fins difference that is comprised, and along the heat exchanger short transverse, the number of fins that the top is permeable section is more than the number of fins of permeable section of below.
As a further improvement on the present invention, described waterproof section fin is downward-sloping towards the air side, waterproof section fin active section on flat tube projection line and the angle theta at edge, flat tube inlet side for greater than 45 degree less than 90 degree, to be 45 degree spend to 90 the angle at the projection line of permeable fin active section on flat tube and edge, flat tube inlet side.
Further improve as of the present invention, the air side of described waterproof section fin is extended with leg-of-mutton chimb, the identical or downward bending of chimb of direction of described triangle chimb and fin, and angle bending is 1～15 to spend.
The present invention has been owing to adopted between permeable fin the compartment of terrain to arrange fluid-tight fin, and that can gather above calking fin at this fluid-tight fin place coagulates water and be discharged to beyond the heat exchanger, reduces the amount of following permeable fin by condensed water.Adopt the waterproof fin that chimb is arranged simultaneously, better the condensed water that is retained down is dripped from fin by chimb, no longer the fin below the influence.Further fin is obliquely installed with respect to the windward side, the discharge that utilizes condensed water is also arranged, thereby improve the drainage performance of heat exchanger, finally improve the heat exchange property of heat exchanger.
Description of drawings
Fig. 1 is the heat exchanger front view that adopts in the embodiment of the invention one;
Fig. 2 is the vertical view of the waterproof fin in A-A cross section in the embodiment of the invention one;
Fig. 3 is the vertical view of the permeable fin in B-B cross section in the embodiment of the invention one;
Fig. 4 is the front view of fixed value 8 for the n of the embodiment of the invention two;
Fig. 5 is the front view of changing value for the n of the embodiment of the invention three;
Fig. 6 is the schematic diagram of the angle of various fins among the present invention;
Fig. 7 is the vertical view that chimb is arranged of the embodiment of the invention six;
Fig. 8 is the vertical view of the fin that waterproof projection is arranged of the embodiment of the invention eight;
Fig. 9 is the schematic diagram of various fin projection form among the present invention.
Wherein 1 is heat exchanger; 2 is last header; 3 is lower header; 4 is flat tube; 5 is fin; 6 is active section; 7 is linkage section; 8 is the calking sheet; 9 is the calking edge; 10 is waterproof; 11 is waterproof projection; 12 is wind direction; 13 are the mobile direction of condensed water; 14 is permeable section; 15 is waterproof section; 16 is waterproof current road; 17 is subtriangular fin chimb; 18 is the bending line of chimb; Permeable fin number is n in permeable section, and the quantity of permeable fin is made as n1, n2 not simultaneously in permeable section; The fin active section on flat tube projection line and the angle of cut of flat tube inlet side be θ.
The specific embodiment
Embodiment one:
Parallel-flow heat exchanger involved in the present invention can be applied to the indoor unit and outdoor unit of air-conditioning, as refrigerant heat exchanger, is used for cooling and warming.Because the present invention is a main purpose to optimize the parallel-flow heat exchanger draining, so the situation that it uses as evaporimeter only is discussed in this patent, as shown in Figure 1, heat exchanger 1 is plate, comprise the superposed header 2 of going up, be positioned at the lower header 3 of bottom, between upper and lower header 2,3, a plurality of connection flat tubes 4 arranged, between flat tube 4, be furnished with the fin 5 of rectangular arranging (shown in accompanying drawing 9d).Air enters from a side of heat exchanger, flow out from opposite side, in Fig. 1, be the direction that outwards blows out from paper, projection line and the flat tube inlet side edge-perpendicular of permeable fin active section on flat tube among the embodiment one, the projection line of waterproof fin active section on flat tube also is vertical with edge, flat tube inlet side simultaneously, promptly shown in Fig. 6 a, both are vertical.From enlarged drawing as can be seen, fin 5 comprises the active section 6 and the linkage section 7 of fin, and fin 5 is projected as rectangle, wherein active section 6 main and air heat exchange on wind direction, linkage section 7 mainly plays a part to connect fin and flat tube, and transmits heat between flat tube 4 and fin active section 6.In order to increase the exchange capability of heat of fin, general by form raising exchange capability of heat at the active section calking, promptly form calking sheet or calking fin.When header was arranged up and down, common heat exchanger condensed water on fin can flow downward along the slit of calking, and the condensation water quantity of past more next gathering is big more, can cause exchange capability of heat to lower, and also can increase the resistance of wind.In the present embodiment, by being set below one group of calking sheet, fluid-tight fin can dam the condensed water of top calking sheet, and by waterproof fin water is discharged outside the fin, avoid with fixed attention that water continues to flow downward from fin, also avoided causing the increase of the deterioration and the windage of heat exchange effect.In the embodiment of the invention one, amplifier section as Fig. 1, can see that the fin 5 between flat tube 4 can be divided into permeable calking sheet 8 and fluid-tight fin 10, fluid-tight fin 10 can dam the condensed water that is positioned at above it calking sheet of one group and discharge, and avoids condensed water can flow to calking sheet below it.
From Fig. 1 the A-A section can obtain fluid-tight fin 10 (can be plain film or dash shape is arranged and not towards saturating plain film) vertical view, though the heat exchange property of plain film will be worse than the calking sheet, but because it can be discharged condensed water, so can improve the heat exchange property of fin below it, thereby improve the heat exchange property of heat exchanger integral body.
The B-B section can obtain the vertical view of calking sheet 8 from Fig. 1.Owing to can improve heat exchange efficiency by calking on fin, 9 is the calking edge, produces condensed water on calking edge and calking sheet 8, accumulate bigger water droplet by little water droplet, Open Side Down flows to next calking sheet along calking, and so downward, the condensed water of generation is many more.
Fin comprises 50 calking sheets for permeable section in the embodiment of the invention one, waterproof section fin 10 is 1, the ratio of permeable fin (being the calking sheet) and waterproof fin is 50: 1, and this ratio is fixed value in same heat exchanger, 1800 fins that on this heat exchanger, have, so have 36 waterproof fins and 1764 calking fins between two flat tubes of being separated by.When the quantity of calking sheet on the heat exchanger increases, can be relatively good at the heat exchange property of this heat exchanger during as condenser, when humidity ratio bigger, and condensation water quantity is when big, adopt more waterproof fin, condensed water is discharged to outside the heat exchanger, can make overall heat exchange property relatively good, so the acceptable ratio range is 8～500: 1, a waterproof fin promptly is set under 8 to 500 calking sheets can realizes that the present invention wishes the effect that reaches.
Embodiment two:
Embodiment two is that with the main difference of embodiment one waterproof section fin number is more than 1.The numerical value of the calking sheet of each group is 8 among the embodiment two, and wherein permeable section 14 promptly shown in Figure 4 comprises 8 calking sheets, and thereunder waterproof section 15 comprises 2 fluid-tight fins 10.Second fluid-tight fin 10 is that the single waterproof fin in the embodiment one occurs damaging and situation that drain function was lost efficacy, so each waterproof section 15 can be provided with 2-3 waterproof fin, finishes the task of discharging condensed water jointly.
Embodiment three:
Embodiment three is that with the main difference of embodiment one quantity of permeable section the calking sheet of embodiment three changes.As shown in Figure 5, the quantity of permeable fin is made as n1, n2, n3...... not simultaneously in permeable section, the n1=445 of the superiors in embodiment three, and through after the permeable fin section, ratio n reduces 40 according to every, n2=405 then, n3=365.A fluid-tight fin section is set under each permeable fin section, and fluid-tight fin section comprises 1～3 fin.The active section quantity of total fin of embodiment three is 2282, and n7 is 205.Top at heat exchanger is higher owing to temperature, the amount that produces condensed water will be less than the lower heat exchanger bottom of temperature, if situation according to each calking sheet quantity unanimity of permeable section, do not reflect the different situation of condensation water quantity up and down, if the calking sheet quantity according to permeable section of top is big, and the little situation of calking sheet of permeable section of bottom can be mated actual condensed water more and be generated situation.
Embodiment four:
The embodiment of the invention four is for being used for the heat exchanger of air-conditioner outdoor unit, with the main distinction of embodiment one be waterproof fin active section on flat tube projection line and the angle of cut at edge, flat tube inlet side be θ, downward-sloping towards the air side, this angle θ is 60 degree, situation as b among Fig. 6, because downward-sloping, then can make easier being discharged from of condensed water on waterproof fin, and can on waterproof fin, not stop in the face of having on the direction of wind direction.When adopting θ to equal 60 degree angles, the inclination of fin can't increase significantly for the resistance of wind, projection line and the angle θ at flat tube inlet side edge of permeable calking fin active section on flat tube is 90 degree, situation as a among the figure, can under the situation that less influences air quantity, better discharge the condensed water on the waterproof fin like this.The embodiment of the invention four has adopted and has been projected as trapezoidal fin of arranging, and referring to Fig. 9 e, adopts the similar of trapezoidal fin and rectangle (shown in accompanying drawing 9d), coagulates water and can run down into following fin by the calking of fin, and influence heat exchange and increase windage.Though the draining meeting of trapezoidal waterproof fin is because the inclined position of trapezoidal active section, and make draining more be partial to a side of lower.But, do not influence the water that coagulates that fin that waterproof fin can block above it permeable section forms, can not influence waterproof fin yet condensed water is discharged to outside the fin.
Embodiment five:
The embodiment of the invention five is similar to embodiment four, main difference be waterproof fin active section on flat tube projection line and the angle at edge, flat tube inlet side be θ, this angle θ is 45 degree, situation as c among Fig. 6, because on the direction of wind direction, downward-sloping, then can make easier being discharged from of condensed water on waterproof fin, and can on waterproof fin, not stop, more help draining in the time of can equaling 60 degree angles than θ.In addition, projection line and the angle θ at flat tube inlet side edge of permeable calking sheet active section on flat tube is 45 degree, when the processing parallel-flow heat exchanger, is easier to the assembling and the production of parts like this.But compare with embodiment four, windage can increase a little.Another some difference is, present embodiment adopt from distinguished and admirable to be projected as corrugated fin, referring to Fig. 9 g, adopt the similar of corrugated calking sheet and rectangle, coagulate water and can run down into following fin, and influence heat exchange and increase windage by the calking of fin.Though the draining meeting of corrugated waterproof fin is because the position of corrugated active section, and make draining more be partial to a side of lower.But, do not influence waterproof fin and can block the condensed water that permeable fin section forms above it, can not influence waterproof fin yet condensed water is discharged to outside the fin.Shown in top above embodiment, the scope of the angle theta at projection line on the fin active section flat tube and edge, flat tube inlet side is that 45 degree are to 90 degree.
Embodiment six:
The embodiment of the invention six is that with the difference of embodiment four in the air side of waterproof fin, waterproof fin has the similar leg-of-mutton chimb 17 that stretches out.As shown in Figure 7, wherein 12 is the direction of wind, and 11 is fluid-tight fin, 4 for flat tube analyse and observe the 17 similar leg-of-mutton chimbs that stretch out for waterproof fin.Waterproof fin among the embodiment one is difficult to gather big water droplet, and condensed water is flowed down along the flat tube side, still, and on the condensed water that flat tube flows downward still has fin below may flowing into once more.Adopt leg-of-mutton chimb 17 as shown in FIG., can assemble water droplet easilier, and make condensed water ground directly drop onto beyond the heat exchanger, thereby further reduce the influence of heat exchanging device heat exchange property at leg-of-mutton side and drift angle side.Another the some difference be, fin quite distinguished and admirable to the rhombus that is projected as arrange, referring to Fig. 9 f.
Embodiment seven:
The embodiment of the invention seven is with the difference of embodiment six, there is the similar leg-of-mutton chimb 17 that stretches out that a downward chimb bending line 18 is arranged at waterproof fin, as shown in Figure 7, bend downward chimb 17 and help the drippage and the discharge of water droplet more, but can increase the resistance of air a little, so the angle of bending can not be too big, preferred angle is the 1-15 degree.
Embodiment eight:
The embodiment of the invention eight is with the difference of embodiment six, the projection that compacting is arranged on waterproof fin, as shown in Figure 8, wherein 10 is fluid-tight fin, the projection 11 of arranging according to wind direction is arranged on the direction of wind direction 12, under the situation of wind, the condensed water that condensed water of being received by waterproof fin 10 and heat exchange produce is by the drainage of projection 11, converge on the waterproof current road 16 on fin both sides, final because the power of blowing of wind and be tilted under the gravity effect converge to the edge or the top margin of triangle chimb 17, drop onto outside the heat exchanger.The form that adopts projection then projection itself can water, and because blowing of wind forms current smoothly on waterproof current road 16, can discharge fin to water easily.The form of projection is slightly narrow for wide both sides, centre, and the water droplet in the middle of being suitable for flows to the form on both sides.
Claims (10)
1. heat exchanger that improves drainage performance, comprise header and lower header, vertically be connected a plurality of flat tubes between header and the lower header, between adjacent flat tube, be provided with some fins, it is characterized in that: described fin comprises permeable fin and fluid-tight fin, permeable fin is formed a plurality of permeable section, and fluid-tight fin is formed a plurality of waterproof section, arranges with waterproof spacer segment for permeable section.
2. according to the described heat exchanger that improves drainage performance of claim 1, it is characterized in that: described arbitrary permeable section number of fins is greater than arbitrary waterproof section number of fins, and the fin between the adjacent flat tube is arranged into rectangle or trapezoidal or rhombus or waveform.
3. according to the described heat exchanger that improves drainage performance of claim 1, it is characterized in that: described arbitrary permeable section comprises 8～500 permeable fins.
4. according to the described heat exchanger that improves drainage performance of claim 2, it is characterized in that: described permeable fin is the calking sheet.
5. according to the described heat exchanger that improves drainage performance of claim 1, it is characterized in that: described arbitrary waterproof section comprises 1～3 waterproof fin.
6. according to the described heat exchanger that improves drainage performance of claim 4, it is characterized in that: described waterproof fin is plain film or is provided with projection upwards on plain film.
7. according to each described heat exchanger that improves drainage performance of claim 1 to 6, it is characterized in that: described a plurality of permeable section number of fins that comprised are identical.
8. according to each described heat exchanger that improves drainage performance of claim 1 to 6, it is characterized in that:
Described a plurality of permeable section number of fins difference that is comprised, and along the heat exchanger short transverse, the number of fins that the top is permeable section is more than the number of fins of permeable section of below.
9. according to each described heat exchanger that improves drainage performance of claim 1 to 6, it is characterized in that: described waterproof section fin is downward-sloping towards the air side, waterproof section fin active section on flat tube projection line and the angle theta at edge, flat tube inlet side for greater than 45 degree less than 90 degree, to be 45 degree spend to 90 the angle at the projection line of permeable fin active section on flat tube and edge, flat tube inlet side.
10. according to each described heat exchanger that improves drainage performance of claim 1 to 6, it is characterized in that: the air side of described waterproof section fin is extended with leg-of-mutton chimb, identical or the downward bending of chimb of direction of described triangle chimb and fin, angle bending are 1～15 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010512694 CN101957105A (en) | 2010-10-19 | 2010-10-19 | Heat exchanger for improving drainage performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010512694 CN101957105A (en) | 2010-10-19 | 2010-10-19 | Heat exchanger for improving drainage performance |
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| CN101957105A true CN101957105A (en) | 2011-01-26 |
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| CN 201010512694 Pending CN101957105A (en) | 2010-10-19 | 2010-10-19 | Heat exchanger for improving drainage performance |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012134A (en) * | 2010-10-19 | 2011-04-13 | 广东美的制冷设备有限公司 | Heat exchanger favorable for drainage |
| CN102494443A (en) * | 2011-12-02 | 2012-06-13 | 四川长虹电器股份有限公司 | Microchannel heat exchanger capable of facilitating to drainage of condensed water |
| CN102927719A (en) * | 2011-08-12 | 2013-02-13 | 珠海格力电器股份有限公司 | Combined heat exchanger |
| CN103917837A (en) * | 2011-12-12 | 2014-07-09 | 三菱电机株式会社 | Refrigerator |
| CN107702387A (en) * | 2017-11-10 | 2018-02-16 | 广东美的制冷设备有限公司 | Condensing unit and air-conditioning equipment |
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| JP2010025462A (en) * | 2008-07-22 | 2010-02-04 | Nippon Light Metal Co Ltd | Heat exchanger |
| JP2010025490A (en) * | 2008-07-23 | 2010-02-04 | Sharp Corp | Heat exchanger and air conditioner using same |
| CN101672554A (en) * | 2009-10-10 | 2010-03-17 | 三花丹佛斯（杭州）微通道换热器有限公司 | Heat exchanger capable of improving drainage performance |
| CN101858698A (en) * | 2009-04-10 | 2010-10-13 | 三花丹佛斯（杭州）微通道换热器有限公司 | Microchannel heat exchanger |
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Patent Citations (6)
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| JP2009204277A (en) * | 2008-02-29 | 2009-09-10 | Nippon Light Metal Co Ltd | Heat exchanger |
| JP2009299963A (en) * | 2008-06-11 | 2009-12-24 | Sharp Corp | Heat exchanger |
| JP2010025462A (en) * | 2008-07-22 | 2010-02-04 | Nippon Light Metal Co Ltd | Heat exchanger |
| JP2010025490A (en) * | 2008-07-23 | 2010-02-04 | Sharp Corp | Heat exchanger and air conditioner using same |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012134A (en) * | 2010-10-19 | 2011-04-13 | 广东美的制冷设备有限公司 | Heat exchanger favorable for drainage |
| CN102012134B (en) * | 2010-10-19 | 2013-07-31 | 广东美的制冷设备有限公司 | Heat exchanger favorable for drainage |
| CN102927719A (en) * | 2011-08-12 | 2013-02-13 | 珠海格力电器股份有限公司 | Combined heat exchanger |
| CN102494443A (en) * | 2011-12-02 | 2012-06-13 | 四川长虹电器股份有限公司 | Microchannel heat exchanger capable of facilitating to drainage of condensed water |
| CN103917837A (en) * | 2011-12-12 | 2014-07-09 | 三菱电机株式会社 | Refrigerator |
| CN103917837B (en) * | 2011-12-12 | 2016-01-06 | 三菱电机株式会社 | Refrigerator |
| CN107702387A (en) * | 2017-11-10 | 2018-02-16 | 广东美的制冷设备有限公司 | Condensing unit and air-conditioning equipment |
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Open date: 20110126 |