CN1311218C - Finned pipe type heat exchanger and air conditioner using the same - Google Patents
Finned pipe type heat exchanger and air conditioner using the same Download PDFInfo
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- CN1311218C CN1311218C CNB2004100041614A CN200410004161A CN1311218C CN 1311218 C CN1311218 C CN 1311218C CN B2004100041614 A CNB2004100041614 A CN B2004100041614A CN 200410004161 A CN200410004161 A CN 200410004161A CN 1311218 C CN1311218 C CN 1311218C
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Abstract
To provide a fin tube type heat exchanger of a combination type of an integral fin group and a divisional fin group improved in heat exchanging performance, and to provide an outdoor machine for air conditioner improved in its heat exchanging performance. This fin tube type heat exchanger is constituted by combining heat transfer tubes 4a of a plurality of rows arranged in the air flow direction, the integral fin group 4b superposed onto the heat transfer tubes 4a of the plurality of rows at specific pitches, and the divisional fin group 4c divisionally superposed onto every row of the heat transfer tubes 4a of the plurality of rows, in the extending direction of the heat transfer tubes. The fin pitch P1 of the integral fin group 4b is larger than the fin pitch P2 of the divisional fin group 4c. Further this fin tube type heat exchanger is used in the outdoor machine for an air conditioner.(C)2004,JPO&NCIPI.
Description
Technical field
The present invention relates to finned tube (fin tube) type heat exchanger, particularly improved the fin tube heat exchanger of heat exchange performance and the air conditioner of this heat exchanger of use.
Background technology
In the fin tube heat exchanger that is provided with 1 biographies heat pipe, with the external diameter of heat-transfer pipe be set at D, with the width of the airflow direction of fin (below, abbreviate it as fin width) when being set at W, when their ratio W/D is not less than 3, have heat exchange performance preferably, this point is known technology (for example, with reference to Japanese kokai publication hei 11-14190 communique the paragraph that is numbered [0008], Fig. 1).
But, with each heat-transfer pipes of many heat-transfer pipes of configuration arranged side by side on overlap the cutting apart in the fin tube heat exchanger of fin groups separately, the relation of fin width and heat exchange performance is very not clear and definite, can not obtain fully high heat exchange performance.
And, known in the prior art: as to compare with simple fin tube heat exchanger side by side, the fin tube heat exchanger that one-piece type part and Splittable part is made up on the direction of the extension setting of heat-transfer pipe, can make by the flowing resistance of one-piece type part for a short time, so heat exchange performance is good.Above-mentioned simple fin tube heat exchanger side by side has a plurality of fin groups, and each fin groups overlaps with many heat-transfer pipes that dispose side by side on airflow direction respectively along the almost total length of heat-transfer pipe.The one-piece type part of the fin tube heat exchanger of above-mentioned back, 1 fin groups overlaps on the many heat-transfer pipes of configuration arranged side by side jointly; The Splittable part of the fin tube heat exchanger of above-mentioned back, overlapping respectively with each heat-transfer pipe of the many heat-transfer pipes that dispose side by side (for example, can be with reference to specially real～the 5 page of the 6th row of the 4th page of the 20th row that open clear 62-192086 communique of Japan; The 1st figure, the 2nd figure; Real the 4th page of the 14th row～the 20 row of opening flat 1-61570 communique of Japanese Patent Application Publication report; The 1st figure, the 2nd figure).
But, in the existing fin tube heat exchanger, it is identical that its one-piece type heat exchange department and the spacing of fin of Splittable heat exchange department are set for, and as the outdoor heat converter of air conditioner, the Splittable heat exchange section of fin tube heat exchanger formed roughly be the L font; Under with the opposed occasion of one-piece type heat exchange section and Machine Room, because of the influence of the flowing resistance of Machine Room, the wind speed of the air-flow by one-piece type heat exchange section is sharply descended, can not fully carry out heat exchange at one-piece type heat exchange section.And, above-mentioned Splittable heat exchange section being formed when roughly being the L font, at the medial margin of each bend, the finned tube stenosis is narrow, and its narrow degree becomes especially big again on the downwind side heat exchanger assembly, and flowing resistance is increased, and can not fully carry out heat exchange.
In addition, under the situation that is arranged in 2 row on the circulation of air direction,, make the weather side heat exchanger assembly identical sometimes with the length of downwind side heat exchanger assembly in order to boost productivity.Under this occasion, when will be when the Splittable heat exchange department be provided with bending part, open end at two heat exchanger assemblies produces jump, do not form overlapping with the weather side heat exchanger assembly, like this, because more air flows away by the part of the little downwind side heat exchanger assembly of flowing resistance, thereby the problem that can not obtain sufficient heat exchange performance is arranged.
Therefore, need such one type fin tube heat exchanger, in this fin tube heat exchanger, relation between clear and definite fin width and the heat exchange performance, can bringing into play high heat exchange performance, and constitute by one-piece type heat exchange department and Splittable heat exchange department that the heat exchange performance that uses under heat exchange performance, the particularly low temperature is improved.
Summary of the invention
The present invention has considered above-mentioned situation and has made, its objective is provides a kind of combined fin tube heat exchanger, in this fin tube heat exchanger, relation between clear and definite fin width and the heat exchange performance, can bringing into play high heat exchange performance, and constitute by having the Splittable heat exchange department at least a portion that the heat exchange performance that uses under heat exchange performance, the particularly low temperature is improved.In addition, other purposes of the present invention are, provide a kind of improve ventilation resistance in order to bring into play high heat exchange performance and improved heat exchange performance, by one-piece type heat exchange department and part combined fin tube heat exchanger that the individual character heat exchange department constitutes.
In order to achieve the above object, according to a kind of mode of the present invention, provide a kind of like this fin tube heat exchanger, it has the Splittable heat exchange department, this Splittable heat exchange department is to comprise: a plurality of fins, and described a plurality of fins are set up in parallel with prescribed distance, and air is being circulated in the gap mutually; Heat-transfer pipe, connect described a plurality of fin, and on airflow direction, arrange side by side, in above-mentioned a plurality of fin, at least a portion fin is cut apart on airflow direction, thereby the Splittable heat exchange department comprises weather side heat exchanger assembly and downwind side heat exchanger assembly, it is characterized in that, the fin width W of the fin of above-mentioned Splittable heat exchange department is set at 22.2mm≤W≤26.2mm.Thus, make between the fin width that to give full play to high heat exchange performance and the heat exchange performance relation clear and definite, can realize that 2 of a kind of heat exchange performance raising that makes use heat exchange performance, particularly low temperature under are listed as fin tube heat exchanger arranged side by side.
In another preferable example, the size of the outer diameter D of heat-transfer pipe is 6.35mm≤D≤10mm.Thus, heat exchange reaches about 90% of maximum thermal exchange amount.
In another preferable example, above-mentioned Splittable heat exchange department is made of weather side heat exchanger assembly and downwind side heat exchanger assembly, with the heat-transfer pipe of downwind side heat exchanger assembly, is provided with in fin width direction center fall off side.Thus, the higher heat exchange performance of performance.
In another preferable example, on the fin of downwind side heat exchanger assembly, between the above-mentioned fin breakthrough part of heat-transfer pipe, on the circulation of air direction, be provided with no more than 2 having cut or otch.Thus, realize the high heat exchange performance that low temperature uses down.
In another preferable example, on the fin of downwind side heat exchanger assembly, between the above-mentioned fin breakthrough part of heat-transfer pipe divides, setting has been cut or otch, when having cut or the number of otch is set at M, will and the above-mentioned fin breakthrough part of the heat-transfer pipe of the circulation of air direction vertical direction number between dividing when being made as X, the ratio M/X of M and X is set at 0.5≤M/X≤0.875.Thus, heat exchange can reach about 90% of maximum thermal exchange amount.
In another preferable example, the part that direction is set in the extension of Splittable heat exchange department possesses one-piece type heat exchange department, and this one-piece type heat exchange department is that one group of fin groups overlaps jointly on the above-mentioned heat-transfer pipe of arranging side by side on the airflow direction and forms.
According to other modes of the present invention, realize a kind of like this fin tube heat exchanger, it comprises: the heat-transfer pipe that disposes side by side on airflow direction; One-piece type heat exchange department overlaps on the described heat-transfer pipe jointly with prescribed distance; The Splittable heat exchange department, be provided with on the direction in the extension of above-mentioned heat-transfer pipe with described one-piece type heat exchange department and make up, a plurality of fins are cut apart and overlapped respectively with above-mentioned heat-transfer pipe, thereby the Splittable heat exchange department comprises weather side heat exchanger assembly and downwind side heat exchanger assembly, it is characterized in that, make the spacing of fin of above-mentioned one-piece type heat exchange department bigger than the spacing of fin of above-mentioned Splittable heat exchange department.
In a preferable example, be made as Q1 in spacing of fin with above-mentioned one-piece type heat exchange department, when the spacing of fin of Splittable heat exchange department is made as Q2, the ratio Q1/Q2 of Q1 and Q2 is set at 1.07≤Q1/Q2≤1.20.Thus, heat exchange reaches about 90% of maximum thermal exchange amount.
According to other modes of the present invention, can realize a kind of like this air conditioner, it possesses: housing;
Fin tube heat exchanger comprises: the heat-transfer pipe of configuration arranged side by side; One-piece type heat exchange department overlaps on the described heat-transfer pipe jointly with prescribed distance; The Splittable heat exchange department, be provided with on the direction in the extension of above-mentioned heat-transfer pipe with described one-piece type heat exchange department and make up, a plurality of fins are cut apart and overlapped respectively with above-mentioned heat-transfer pipe, thereby the Splittable heat exchange department comprises weather side heat exchanger assembly and downwind side heat exchanger assembly, and above-mentioned one-piece type heat exchange department is configured to relative with airflow direction in the above-mentioned housing that circulates in above-mentioned housing;
And pressure fan circulates said flow in above-mentioned fin tube heat exchanger,
It is characterized in that, make the spacing of fin of above-mentioned one-piece type heat exchange department bigger than the spacing of fin of Splittable heat exchange department.
In addition, according to other modes of the present invention, can provide a kind of like this fin tube heat exchanger, it comprises: the heat-transfer pipe that disposes side by side on airflow direction; One-piece type heat exchange department overlaps on the described heat-transfer pipe jointly with prescribed distance; The Splittable heat exchange department, be provided with on the direction in the extension of above-mentioned heat-transfer pipe with described one-piece type heat exchange department and make up, a plurality of fins are cut apart and overlapped respectively with above-mentioned heat-transfer pipe, thereby the Splittable heat exchange department comprises weather side heat exchanger assembly and downwind side heat exchanger assembly, it is characterized in that above-mentioned Splittable heat exchange department forms roughly L font; Make the spacing of fin of the weather side heat exchanger assembly that constitutes above-mentioned Splittable heat exchange department, bigger than the spacing of fin of downwind side heat exchanger assembly.
Thus, can eliminate the skew of the spacing of fin of the spacing of fin of weather side heat exchanger assembly and downwind side heat exchanger assembly, and, be made as suitable value by spacing of fin with the downwind side heat exchanger assembly, can eliminate the extreme narrow of it, thereby flowing resistance is reduced, like this, can obtain sufficient heat exchange performance.And the wind speed profile of whole heat exchanger is even, improves heat exchange performance.
In a preferable example, be made as P3 in spacing of fin with the weather side heat exchanger assembly of above-mentioned Splittable heat exchange department, when the spacing of fin of downwind side heat exchanger assembly is made as P4, the ratio P3/P4 of P3 and P4 is set at 1.05≤P3/P4≤1.17.Thus, heat exchange reaches about 90% of maximum thermal exchange amount.
In another preferable example, the weather side heat exchanger assembly of above-mentioned Splittable heat exchange department and the open end of downwind side heat exchanger assembly constitute and roughly become same plane.Thus, further improve heat exchange performance.
Description of drawings
Fig. 1 is the plane of the 1st embodiment of expression fin tube heat exchanger of the present invention.
Fig. 2 is the side view of Splittable heat exchange department of the 1st embodiment of expression fin tube heat exchanger of the present invention.
Fig. 3 is the occupation efficiency of one-piece type heat exchange department of expression fin tube heat exchanger of the present invention and the chart of cryogenic property relation.
Fig. 4 is the plane of the 2nd embodiment of expression fin tube heat exchanger of the present invention.
Fig. 5 is the plane of the 3rd embodiment of expression fin tube heat exchanger of the present invention.
Fig. 6 is the plane of the 4th embodiment of expression fin tube heat exchanger of the present invention.
Fig. 7 is the plane of the 5th embodiment of expression fin tube heat exchanger of the present invention.
Fig. 8 is the plane of the 6th embodiment of expression fin tube heat exchanger of the present invention.
Fig. 9 is the plane of the 7th embodiment of expression fin tube heat exchanger of the present invention.
Figure 10 is the plane of the 8th embodiment of expression fin tube heat exchanger of the present invention.
Figure 11 is the plane of the 9th embodiment of expression fin tube heat exchanger of the present invention.
Figure 12 is illustrated among the 1st embodiment of fin tube heat exchanger of the present invention, and making fin width is that unit changes with 0.2mm, investigates the chart of result of the test of the variation of its cryogenic property.
Figure 13 is illustrated among the 1st embodiment of fin tube heat exchanger of the present invention, to the number that change has been cut, investigates the chart of the result of the test of its heat exchange performance.
Figure 14 is illustrated among the 1st embodiment of fin tube heat exchanger of the present invention, and the occupation rate M/X that has cut between the perforation heat-transfer pipe that is arranged on the downwind side heat exchanger assembly is changed, and investigates the chart of the result of the test of its heat exchange performance.
Figure 15 be the expression fin tube heat exchanger that is provided with the present invention the 10th embodiment air conditioner overlook sectional drawing.
Figure 16 (a) is the dull and stereotyped state plane figure of the fin tube heat exchanger of the present invention the 11st embodiment, the plane that Figure 16 (b) is in net shape.
Figure 17 is illustrated among the 10th embodiment of fin tube heat exchanger of the present invention, changes the ratio P1/P2 of the finned tube P2 of the finned tube P1 of one-piece type heat exchange department and Splittable heat exchange department, investigates the chart of the result of the test of its heat exchange performance.
Figure 18 is illustrated among the 11st embodiment of fin tube heat exchanger of the present invention, changes the ratio P3/P4 of the finned tube P4 of the finned tube P3 of weather side heat exchanger assembly and downwind side heat exchanger assembly, investigates the chart of the result of the test of its heat exchange performance.
The specific embodiment
Below, the embodiment of fin tube heat exchanger of the present invention is described with reference to accompanying drawing 1～Figure 14 and Figure 15～Figure 18.
Fig. 1 is a plane of representing the 1st embodiment of fin tube heat exchanger of the present invention conceptually.
As shown in Figure 1, fin tube heat exchanger 1 of the present invention is that one-piece type heat exchange department 3 and Splittable heat exchange department 4 are combined on the direction of the extension setting of heat-transfer pipe 2, and described one-piece type heat exchange department 3 is that one group of fin groups jointly coincides with on the heat-transfer pipe 2a, the 2b that arrange side by side on the airflow direction and forming; Above-mentioned Splittable heat exchange department 4 is that divided two groups of fin groups overlap respectively on above-mentioned 2 heat- transfer pipe 2a, 2b and form.
Splittable heat exchange department 4 constitutes near the heat exchanger assembly 7 that is configured in downwind side by the heat exchanger assembly 6 that is configured in weather side with this weather side heat exchanger assembly 6.
Above-mentioned weather side heat exchanger assembly 6 comprises: a plurality of plate-shaped fins 4a, at certain intervals (spacing) configured in parallel, have fin width W and make air-flow circulate betwixt; Heat-transfer pipe 2a vertically connects these fins 4a, and has outer diameter D, its inside of airflow.This heat-transfer pipe 2a connects fin 4a with spacing P1.
Downwind side heat exchanger assembly 7 is same with weather side heat exchanger assembly 6, comprising: a plurality of tabular fin 4b and the vertical heat-transfer pipe 2b that connects these fins 4b.Therefore, this downwind side heat exchanger assembly 7 has the shape same with weather side heat exchanger assembly 6.The heat-transfer pipe 2a of weather side heat exchanger assembly 6 and the heat-transfer pipe 2b of downwind side heat exchanger assembly 7 have distance P 2 each other, hot weather side exchange assembly 6 and downwind side heat exchanger assembly 7 configured in parallel.And, connect heat-transfer pipe 2a and the same fin 4b heat-transfer pipe 2b that connects of these fins 4a, with the direction of air-flow quadrature on turn back under half state that departs from of spacing P1, form what is called and be staggered.And, be positioned under the occasion on the center line of fin P2=W respectively at two heat-transfer pipes.
The width W of best above-mentioned fin is of a size of 22.2mm≤W≤26.2mm.When fin width W surpasses 26.2mm, the long-pending frost amount (long-pending white thickness) of per unit area fin is less, the circulation of air gap is less narrows down, but opposite, because the heat exchanger effectiveness of per unit area fin descends, can not obtain amplifying the heat exchange effect that matches with fin width.On the other hand, when the width W of fin during,, thereby can not carry out sufficient heat exchange because the long-pending frost amount (long-pending white thickness) of fin is more, the circulation of air gap is narrower less than 22.2mm.
In addition, the outer diameter D of best above-mentioned heat-transfer pipe 2b is 6.35mm≤D≤10mm.When outer diameter D surpasses 10mm, can not obtain the heat exchange effect that matches with its structure large-scaleization, on the contrary,,, thereby on reality is used, be bad because fluid flow is less, the ability of heat exchange reduces when outer diameter D during less than 6.35mm.
In present embodiment 1, as shown in Figure 1, the length L 1 of one-piece type heat exchange department 3 is with respect to the length ratio of the length L of fin tube heat exchanger 1, promptly, the occupation efficiency L1/L of one-piece type heat exchange department 3 as shown in Figure 3, this occupation efficiency L1/L is big more, heat exchange performance is just high more, but under the situation of considering other various conditions, for example above-mentioned occupation efficiency L1/L is made as 50%, one-piece type heat exchange department 3 is set on the part of fin tube heat exchanger at least, like this, just can improve heat exchange performance.Can with all states one-piece type heat exchange department 3 and Splittable heat exchange department 4 be made up as shown in Figure 4 and Figure 5.And, under the occasion of shape that fin-type heat exchanger 1 is constituted the L oxbow or U oxbow shape, owing on the heat-transfer pipe of one-piece type heat exchange department 3, be easy to generate buckling, thus preferably as Fig. 6 or shown in Figure 7, at Splittable heat exchange department 4 formation bends.Thus, heat exchange can reach the about more than 90% of maximum thermal exchange amount.
Owing to have the fin tube heat exchanger of the 1st embodiment of said structure, have one-piece type heat exchange department and Splittable heat exchange department, the fin width W of the heat release fin of Splittable heat exchange department is set at 22.2mm≤W≤26.2mm, thereby heat exchange can reach the about more than 90% of maximum thermal exchange amount; When fin width W was about 24.2mm, it is maximum that heat exchange reaches.In addition, be set at 6.35mm≤D≤10mm, can obtain high heat exchange performance by outer diameter D with heat-transfer pipe.Particularly the heat-transfer pipe outer diameter D is 8～9.52mm, and fin width W can obtain extra high heat exchange performance in 23.5～24mm scope the time.
Below, with reference to Fig. 8, the installation of the fin of the 1st embodiment of fin tube heat exchanger of the present invention, heat-transfer pipe arranged describe.
With respect on the center line that among above-mentioned the 1st embodiment heat-transfer pipe is configured in fin (with reference to Fig. 1), among the present invention the 2nd embodiment, the heat-transfer pipe fall off side of downwind side heat exchanger assembly is provided with.
That is, for example shown in Figure 8, among the fin tube heat exchanger 1A of the present invention the 2nd embodiment, the heat-transfer pipe 2Ab of downwind side heat exchanger assembly 3A is from the center line C fall off side of the length direction of fin 4Ab and be provided with.Generally, because around heat-transfer pipe, the heat exchanger effectiveness of fin is the highest, thereby heat-transfer pipe is configured in the fin center is desirable.Thus, among the side of the being in the wind heat exchanger assembly 2A, heat-transfer pipe 2Aa is configured on the center line C of fin width.
From cutting apart fin tube heat exchanger on the whole, 4Ab1 between next 2 the close heat-transfer pipe breakthrough part around the breakthrough part of heat-transfer pipe, the heat exchanger effectiveness of fin is higher.The heat-transfer pipe 2Ab of above-mentioned downwind side heat exchanger assembly 3A, be provided with from the center line C deflection circulation of air direction of fin width W, thereby, 4Ab1 between the high above-mentioned breakthrough part of heat exchanger effectiveness, do not covered, and be partial to the circulation of air direction from the center line C of fin width W by the dead water region ar of the heat-transfer pipe 2Aa of weather side heat exchanger assembly 2A, thereby, compare with the structure that heat-transfer pipe with the downwind side heat exchanger assembly is configured on the center line, then can bring into play higher heat exchange performance.Because other structures do not have difference with fin tube heat exchanger shown in Figure 1, thereby put on identical symbol, the omission explanation.
Below, with reference to Fig. 9 (a) and (b), the 3rd embodiment of fin tube heat exchanger of the present invention is described.Among the present invention the 3rd embodiment, 4Bb1 place between the perforation heat-transfer pipe 2Bb of downwind side heat exchanger assembly is provided with no more than 2 having cut.
Promptly, shown in Fig. 9 (a), on the fin tube heat exchanger 1B of the present invention the 3rd embodiment, 4Bb1 place between the perforation heat-transfer pipe 2Bb of its downwind side heat exchanger assembly 7B, on fin 4Bb, be provided with as Fig. 9 (b) shown in from directions X be seen as trapezoidal, no more than 2 be listed as cut 4Bb2.
By having cut connecting on fin, to be provided with between the heat-transfer pipe, improve heat exchange action, this is a technique known, but on the contrary, during use under the low temperature that long-pending frost causes, has owing to the long-pending frost of having cut, and makes the problem of heat exchange performance reduction on the contrary.But this is at fin the occasion of having cut to be set on the whole, cuts the influence of time-out to heat exchange performance partly being provided with, and is then also very not clear and definite so far.Here, owing to know to be provided with on the whole and cut at fin, then can reduce heat exchange performance, thereby the fin of downwind side heat exchanger assembly and also only connecting to be provided with between the heat-transfer pipe and cut, change the number that this has been cut, when carrying out its heat exchange characteristics test, when using at low temperatures, when the number of having cut is no more than 2, heat exchange action is improved, but when number be to be no less than 3 when above, the long-pending frost amount of having cut increases, air quantity by the fin gap reduces, thereby the result who obtains is that heat exchange performance reduces.Therefore, known that clearly the number of having cut preferably is set at no more than 2.The present invention the 2nd embodiment makes according to this result of the test, between the perforation heat-transfer pipe of downwind side, no more than 2 having cut is set on fin.When no more than 2 of the number of having cut, heat exchange performance improves, and when being no less than 3, along with the increase of having cut number, has cut the increase of number, the long-pending frost amount increase of having cut, and by the reduction air quantity, the cryogenic property reduction.And, be provided with as shown in figure 10 see circular-arc otch 4Bb3 from the side, can obtain same effect.
Below, with reference to Figure 11, the 4th embodiment of fin tube heat exchanger of the present invention is described.
In above-mentioned the 3rd embodiment shown in Fig. 9 (a) and (b), between the perforation heat-transfer pipe of downwind side heat exchanger assembly, all be provided with and cut, in the 4th embodiment of the present invention, cut connecting between the heat-transfer pipe setting discontinuously with predetermined ratio.
That is, as shown in figure 11, the fin tube heat exchanger 1C of the present invention the 4th embodiment is the part of 4Cb1 between its perforation heat-transfer pipe 2Cb of downwind side heat exchanger assembly 7C, and the ratio with predetermined is provided with on fin 4Cb and has cut 4Cb2.
When the number of having cut that is arranged on the downwind side heat exchanger assembly 7C is set at M, when the number of 4Cb1 between the above-mentioned perforation heat-transfer pipe is set at X, their ratio M/X is set at relational expression 0.5≤M/X≤0.875 is set up.When aforementioned proportion M/X was beyond this scope, heat exchange performance sharply reduced.
As concrete example, when the number M of having cut is 13 (M=13),, then above-mentionedly become 0.65 than M/X if the number X of 4Cb1 between the above-mentioned perforation heat-transfer pipe is made as 20 (X=20).
Cut time-out in setting, consider the heating performance that accompanies with long-pending frost and defrosting, be preferably formed as structure for not causing that air quantity reduces owing to the long-pending frost on having cut.The present invention the 4th embodiment shown in Figure 11 represents that the number that will cut is made as 3 example.
In the present invention the 4th embodiment, ratio M/X is in the scope of 0.5≤M/X≤0.875, and heat exchange can reach the about more than 90% of maximum thermal exchange amount, and ratio M/X is about 0.69 o'clock, the heat exchange performance maximum.
Test 1: with the fin tube heat exchanger of the present invention shown in Figure 1 the 1st embodiment, change fin width, the variation of investigation cryogenic property with 0.2mm unit.
Figure 12 represents the result of this test.
From Figure 12 as seen, the width W of fin is in 22.2mm≤W≤26.2mm scope the time, and heat exchange can reach the about more than 90% of maximum thermal exchange amount, and the width W of fin is during for about 24.2mm, the heat exchange performance maximum; The width of fin is beyond the above-mentioned scope time, and heat exchange performance sharply descends.
In addition, when the heat-transfer pipe outer diameter D is in 6.35～10mm scope, change the result of the test of pipeline section spacing P1, come to the same thing with test 1.Particularly working as the heat-transfer pipe outer diameter D is 8～9.52mm (before the expander), and the width W of fin can obtain the highest heat exchange performance when 23.5～24mm scope.
Test 2: change the number of having cut of the fin tube heat exchanger of the present invention shown in Fig. 9 (a), the investigation heat exchange performance.
Figure 13 represents the result of this test.
From Figure 13 as seen, when the number of having cut is 2 when following, with the occasion of having cut be not set compare, can improve under the low temperature heat exchange performance that uses, still, when the number of having cut is 3 when above, because the long-pending frost amount of having cut increases, the gap turn narrow of circulation of air, thereby air quantity is reduced, thus heat exchange performance is reduced.Moreover, be provided with as shown in figure 10 see the otch that is circular-arc from the side, when carrying out, also can obtain same effect with the same test of test 3.
Test 3: use fin tube heat exchanger of the present invention shown in Figure 6, the number of having cut that is arranged between the perforation heat-transfer pipe of this downwind side heat exchanger assembly is set at M, the number between each reflex part of heat-transfer pipe is set at X, change ratio M/X, the heat exchange performance that investigation low temperature uses down.
Figure 14 represents the result of this test.
From Figure 14 as seen, aforementioned proportion M/X is in 0.5≤M/X≤0.875 scope the time, heat exchange can reach more than 90% of maximum thermal exchange amount that uses under the low temperature, ratio M/X is about 0.69 o'clock, the heat exchange amount maximum, ratio M/X is beyond this scope the time, and the maximum thermal exchange performance that low temperature uses down sharply descends.Moreover, be provided with as shown in figure 10 see the otch that is circular-arc from the side, carry out and test 3 same tests the time, also can obtain same effect.
Below, with reference to accompanying drawing, to the 10th embodiment of fin tube heat exchanger of the present invention with use the air conditioner of this heat exchanger to describe.
Figure 15 be represent conceptually to assemble fin tube heat exchanger of the present invention the 10th embodiment air conditioner overlook sectional drawing.
As shown in figure 15, air conditioner 11 of the present invention has housing 12 and division board 13, and above-mentioned housing 12 is provided with air suction inlet 12a and air blow-off outlet 12b; Above-mentioned division board 13 is divided into supply fan room 12c and Machine Room 12d with this housing 12; In supply fan room 12c, be installed with air suction inlet 12a and relatively be configured in fin tube heat exchanger of the present invention 14 in the housing 12, and, with this fin tube heat exchanger 14 and the opposed pressure fan 15 of air suction inlet 12a, compressor 16 is installed in the 12d of Machine Room.
In the above-mentioned fin tube heat exchanger 14, on the direction that the extension of heat-transfer pipe 14a is provided with, combination is provided with: on airflow direction and the heat-transfer pipe 14a of row arrangement; Spacing with regulation overlaps one-piece type heat exchange department 14b on these heat-transfer pipes 14a; The Splittable heat exchange department 14c of cutting apart coincidence whenever listing of multiple row heat-transfer pipe 14a.The regulation spacing of fin Q1 of above-mentioned one-piece type heat exchange department 14b is than the regulation spacing of fin Q2 the earth coincidence of Splittable heat exchange department 14c.Preferably making the ratio Q1/Q2 of Q1 and Q2 is 1.07≤Q1/Q2≤1.20.Thus, heat exchange can reach the about more than 90% of maximum thermal exchange amount, especially when this ratio Q1/Q2 be about 1.1 the time, the heat exchange maximum.When this ratio Q1/Q2 was beyond above-mentioned scope, heat exchange amount sharply descended.
Fin tube heat exchanger 14 at the present invention the 10th embodiment that will have said structure is assembled into when using in the air conditioner shown in Figure 15 11, can prevent from direction of ventilation to reduce with the wind speed of the opposed one-piece type heat exchange department 14b of Machine Room 12d side; And, set the ratio Q1/Q2 of Q1 and Q2 for 1.07≤Q1/Q2≤1.20, thereby just can make the wind speed profile of fin tube heat exchanger 14 integral body even, can improve heat exchange performance.Therefore, also can improve the heat exchange performance of the air conditioner of the fin tube heat exchanger that uses the present invention the 1st embodiment.
Below, with reference to Figure 16, the 11st embodiment of fin tube heat exchanger of the present invention is described.
With respect to the spacing of fin of among above-mentioned the 10th embodiment spacing of fin of one-piece type heat exchange department being set for greater than the Splittable heat exchange department, among the present invention the 11st embodiment shown in Figure 16, the Splittable heat exchange department is formed the L word shape and sets the spacing of fin of the weather side heat exchanger assembly of Splittable heat exchange department for greater than the downwind side heat exchanger assembly spacing of fin.
Promptly, shown in Figure 16 (a), the structure of fin tube heat exchanger 14A is as follows: 2 of configured in parallel heat-transfer pipe 14Aa, one group of fin groups and above-mentioned 2 heat-transfer pipe 14Aa jointly overlap on airflow direction one-piece type heat exchange department 14Ab, two groups of Splittable heat exchange department 14Ac that fin groups overlaps with each heat-transfer pipe 14Aa respectively, and combination is provided with on the direction that the extension of heat-transfer pipe 14Aa is provided with; Constitute the spacing of fin P3 of the weather side heat exchanger assembly 14Ac1 of Splittable heat exchange department 14Ac, overlap widely than the spacing of fin P4 of downwind side heat exchanger assembly 14Ac2.Thus, in above-mentioned Splittable heat exchange department 14Ac being formed the bend of L word shape roughly, flowing resistance is reduced, obtain sufficient heat exchange performance, and, can also make the wind speed profile of fin tube heat exchanger integral body even, thereby heat exchange performance is improved.In addition, by with the spacing of fin P4 of the spacing of fin P3 of weather side heat exchanger assembly 14Ac1 and downwind side heat exchanger assembly 14Ac2 ratio P3/P4 be set in the scope of 1.05≤P3/P4≤1.17, heat exchange can reach the about more than 90% of maximum thermal exchange amount, special when this ratio P3/P4 be about 1.09 the time, heat exchange amount reaches maximum.When this ratio P3/P4 was beyond this scope, heat exchange amount sharply descended.
And shown in Figure 16 (a), among the Splittable heat exchange department 14Ac, the length L 1 of weather side heat exchanger assembly 14Ac1 constitutes longer than the length L 2 of downwind side heat exchanger assembly 14Ac2.Thus, shown in Figure 16 (b), after bending to the L font, the open end of the open end of weather side heat exchanger assembly 14Ac1 and downwind side heat exchanger assembly 14Ac2 roughly becomes same flat state.Like this, the open end of the side of being in the wind heat exchanger assembly 14Ac1 and downwind side heat exchanger assembly 14Ac2 does not produce jump, therefore, avoids making the part of downwind side heat exchanger assembly to expose, and can prevent the reduction of heat exchange performance.In addition, in the fin tube heat exchanger 14 that constitutes by one-piece type heat exchange department 14Ab and Splittable heat exchange department 14Ac, preferably set for the fin number of one-piece type heat exchange department and Splittable heat exchange department identical, to pass through fin drawing simultaneously, make heat exchanger cheaply with the fin and the Splittable heat exchange department of one-piece type heat exchange department.
In addition, the fin number with one-piece type heat exchange department and Splittable heat exchange department be set at identical after, under the state that bends to the L font, make the open sides end face of the weather side heat exchanger assembly that constitutes the Splittable heat exchange department and the open sides end face of downwind side heat exchanger assembly roughly become same plane, prevent that the heat exchange performance of heat exchanger from reducing.
Test 4: with the fin tube heat exchanger of the present invention shown in Figure 16 the 10th embodiment, change the ratio Q1/Q2 of the spacing of fin Q2 of the spacing of fin Q1 of one-piece type heat exchange department and Splittable heat exchange department, investigate the variation of heat exchange amount.
Figure 17 represents the result of this test.
From Figure 17 as seen, when the ratio Q1/Q2 of Q1 and Q2 was in 1.07≤Q1/Q2≤1.20 scopes, heat exchange reached being no less than of maximum thermal exchange amount about 90%, when ratio Q1/Q2 is about 1.1 the time, it is maximum that heat exchange amount reaches, and when this ratio Q1/Q2 was beyond this scope, heat exchange amount sharply descended.
Test 5: use the fin tube heat exchanger of the 11st embodiment of the present invention shown in Figure 17, the ratio P3/P4 of the spacing of fin P3 of change weather side heat exchanger assembly and the spacing of fin P4 of downwind side heat exchanger assembly, the variation of investigation heat exchange amount.
Figure 18 represents the result of this test.
From Figure 18 also as can be known, when the ratio P3/P4 of P3 and P4 is in 1.05≤(P3/P4)≤1.17 scopes, heat exchange can reach the about more than 90% of maximum thermal exchange amount, when ratio P3/P4 is about 1.09, it is maximum that heat exchange amount reaches, when this ratio P3/P4 was beyond above-mentioned scope, heat exchange amount just sharply descended.
According to fin tube heat exchanger of the present invention, can provide a kind of and improve the combined fin tube heat exchanger that heat exchange performance, at least a portion of heat transfer property when using especially at low temperatures have the Splittable heat exchange department.In addition, also provide a kind of the improvement to ventilate the electricity group and improved combined fin tube heat exchanger heat exchange performance, that constitute by one-piece type heat exchange department and Splittable heat exchange department.
Claims (12)
1, a kind of fin tube heat exchanger has the Splittable heat exchange department, and this Splittable heat exchange department comprises: a plurality of fins, and described a plurality of fins are set up in parallel with prescribed distance, and air is being circulated in the gap mutually; Heat-transfer pipe, connect described a plurality of fin, and on airflow direction, arrange side by side, in above-mentioned a plurality of fin, at least a portion fin is cut apart on airflow direction, thereby the Splittable heat exchange department comprises weather side heat exchanger assembly and downwind side heat exchanger assembly, it is characterized in that, the fin width W of the fin of above-mentioned Splittable heat exchange department is set at 22.2mm≤W≤26.2mm.
2, fin tube heat exchanger as claimed in claim 1 is characterized in that, the size of the outer diameter D of heat-transfer pipe is 6.35mm≤D≤10mm.
3, fin tube heat exchanger as claimed in claim 1, it is characterized in that, above-mentioned Splittable heat exchange department is made of weather side heat exchanger assembly and downwind side heat exchanger assembly, with the heat-transfer pipe of downwind side heat exchanger assembly, is provided with in fin width direction center fall off side.
4, fin tube heat exchanger as claimed in claim 1 is characterized in that, on the fin of downwind side heat exchanger assembly, between the above-mentioned fin breakthrough part of heat-transfer pipe divides, is provided with no more than 2 having cut or otch on the circulation of air direction.
5, fin tube heat exchanger as claimed in claim 1, it is characterized in that, on the fin of downwind side heat exchanger assembly, between the above-mentioned fin breakthrough part of heat-transfer pipe divides, setting has been cut or otch, when will having cut or the number of otch is set at M, will and the above-mentioned fin breakthrough part of the heat-transfer pipe of the circulation of air direction vertical direction number between dividing when being made as X, the ratio M/X of M and X is set at 0.5≤M/X≤0.875.
6, fin tube heat exchanger as claimed in claim 1, it is characterized in that, the part that direction is set in the extension of Splittable heat exchange department possesses one-piece type heat exchange department, and this one-piece type heat exchange department is that one group of fin groups overlaps jointly on the above-mentioned heat-transfer pipe of arranging side by side on the airflow direction and forms.
7, a kind of fin tube heat exchanger comprises: the heat-transfer pipe that disposes side by side on airflow direction; One-piece type heat exchange department overlaps on the described heat-transfer pipe jointly with prescribed distance; The Splittable heat exchange department, be provided with on the direction in the extension of above-mentioned heat-transfer pipe with described one-piece type heat exchange department and make up, a plurality of fins are cut apart and overlapped respectively with above-mentioned heat-transfer pipe, thereby the Splittable heat exchange department comprises weather side heat exchanger assembly and downwind side heat exchanger assembly, it is characterized in that, make the spacing of fin of above-mentioned one-piece type heat exchange department bigger than the spacing of fin of above-mentioned Splittable heat exchange department.
8, fin tube heat exchanger as claimed in claim 7, it is characterized in that, be made as Q1 in spacing of fin, when the spacing of fin of Splittable heat exchange department is made as Q2, the ratio Q1/Q2 of Q1 and Q2 be set at 1.07≤Q1/Q2≤1.20 above-mentioned one-piece type heat exchange department.
9, a kind of air conditioner possesses: housing;
Fin tube heat exchanger comprises: the heat-transfer pipe of configuration arranged side by side; One-piece type heat exchange department overlaps on the described heat-transfer pipe jointly with prescribed distance; The Splittable heat exchange department, be provided with on the direction in the extension of above-mentioned heat-transfer pipe with described one-piece type heat exchange department and make up, a plurality of fins are cut apart and overlapped respectively with above-mentioned heat-transfer pipe, thereby the Splittable heat exchange department comprises weather side heat exchanger assembly and downwind side heat exchanger assembly, and above-mentioned one-piece type heat exchange department is configured to relative with airflow direction in the above-mentioned housing that circulates in above-mentioned housing;
And pressure fan circulates said flow in above-mentioned fin tube heat exchanger,
It is characterized in that, make the spacing of fin of above-mentioned one-piece type heat exchange department bigger than the spacing of fin of Splittable heat exchange department.
10, a kind of fin tube heat exchanger comprises: the heat-transfer pipe that disposes side by side on airflow direction; One-piece type heat exchange department overlaps on the described heat-transfer pipe jointly with prescribed distance; The Splittable heat exchange department, be provided with on the direction in the extension of above-mentioned heat-transfer pipe with described one-piece type heat exchange department and make up, a plurality of fins are cut apart and overlapped respectively with above-mentioned heat-transfer pipe, thereby the Splittable heat exchange department comprises weather side heat exchanger assembly and downwind side heat exchanger assembly, it is characterized in that above-mentioned Splittable heat exchange department forms roughly L font; Make the spacing of fin of the weather side heat exchanger assembly that constitutes above-mentioned Splittable heat exchange department, bigger than the spacing of fin of downwind side heat exchanger assembly.
11, fin tube heat exchanger as claimed in claim 10, it is characterized in that, be made as P3 in spacing of fin with the weather side heat exchanger assembly of above-mentioned Splittable heat exchange department, when the spacing of fin of downwind side heat exchanger assembly is made as P4, the ratio P3/P4 of P3 and P4 is set at 1.05≤P3/P4≤1.17.
As claim 10 or 11 described fin tube heat exchangers, it is characterized in that 12, the weather side heat exchanger assembly of above-mentioned Splittable heat exchange department and the open end of downwind side heat exchanger assembly constitute and roughly become same plane.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003037342A JP4184110B2 (en) | 2003-02-14 | 2003-02-14 | Finned tube heat exchanger |
| JP037342/2003 | 2003-02-14 | ||
| JP2003037341A JP2004245531A (en) | 2003-02-14 | 2003-02-14 | Fin tube type heat exchanger and outdoor machine for air conditioner using the same |
| JP037341/2003 | 2003-02-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1521477A CN1521477A (en) | 2004-08-18 |
| CN1311218C true CN1311218C (en) | 2007-04-18 |
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ID=34315570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100041614A Expired - Fee Related CN1311218C (en) | 2003-02-14 | 2004-02-13 | Finned pipe type heat exchanger and air conditioner using the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1311218C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075901A (en) * | 2013-01-06 | 2013-05-01 | 金龙精密铜管集团股份有限公司 | Finned tube type heat exchanger and fin thereof |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101266113B (en) * | 2007-03-15 | 2011-05-25 | 财团法人工业技术研究院 | Water heater and its heat converter structure |
| JP5777612B2 (en) * | 2010-05-31 | 2015-09-09 | サンデンホールディングス株式会社 | Heat exchanger and heat pump device using the same |
| CN102506522A (en) * | 2011-09-26 | 2012-06-20 | 王永刚 | Fin type heat exchanger and assembly method thereof |
| WO2014147788A1 (en) * | 2013-03-21 | 2014-09-25 | 三菱電機株式会社 | Heat exchanger, refrigeration cycle device, and production method for heat exchanger |
| US10697705B2 (en) * | 2016-08-09 | 2020-06-30 | Mitsubishi Electric Corporation | Heat exchanger and refrigeration cycle apparatus including the same |
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| CN2254536Y (en) * | 1996-01-23 | 1997-05-21 | 武汉开达冷气设备制造有限公司 | Small-diameter copper tube heat exchanger for separation air conditioner outdoor unit |
| CN1210252A (en) * | 1997-08-30 | 1999-03-10 | 三星电子株式会社 | Fin-type heat exchanger |
| JPH11118380A (en) * | 1997-10-13 | 1999-04-30 | Daikin Ind Ltd | Heat exchanger |
| JP2001304783A (en) * | 2000-04-14 | 2001-10-31 | Daikin Ind Ltd | Outdoor heat exchanger, indoor heat exchanger and air conditioner |
| JP2007194287A (en) * | 2006-01-17 | 2007-08-02 | Sumitomo Heavy Ind Ltd | Resin packaging apparatus and resin packaging method by compression molding |
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- 2004-02-13 CN CNB2004100041614A patent/CN1311218C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2254536Y (en) * | 1996-01-23 | 1997-05-21 | 武汉开达冷气设备制造有限公司 | Small-diameter copper tube heat exchanger for separation air conditioner outdoor unit |
| CN1210252A (en) * | 1997-08-30 | 1999-03-10 | 三星电子株式会社 | Fin-type heat exchanger |
| JPH11118380A (en) * | 1997-10-13 | 1999-04-30 | Daikin Ind Ltd | Heat exchanger |
| JP2001304783A (en) * | 2000-04-14 | 2001-10-31 | Daikin Ind Ltd | Outdoor heat exchanger, indoor heat exchanger and air conditioner |
| JP2007194287A (en) * | 2006-01-17 | 2007-08-02 | Sumitomo Heavy Ind Ltd | Resin packaging apparatus and resin packaging method by compression molding |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103075901A (en) * | 2013-01-06 | 2013-05-01 | 金龙精密铜管集团股份有限公司 | Finned tube type heat exchanger and fin thereof |
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| CN1521477A (en) | 2004-08-18 |
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