CN1303380C - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
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- CN1303380C CN1303380C CNB031074960A CN03107496A CN1303380C CN 1303380 C CN1303380 C CN 1303380C CN B031074960 A CNB031074960 A CN B031074960A CN 03107496 A CN03107496 A CN 03107496A CN 1303380 C CN1303380 C CN 1303380C
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- heat exchanger
- exchanger tube
- heat exchange
- row
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
- F28F1/325—Fins with openings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/01—Geometry problems, e.g. for reducing size
Abstract
The present invention provided a heat exchanger for improving manufacturing performance, and improving heat exchange performance and low temperature performance. This heat exchanger has a plurality of heat radiating fins 2 juxtaposed at a prescribed interval, and allowing heat exchange air to flow to mutual clearance, and heat exchange pipes 3 penetrating over these heat radiating fins, arranged in a row at a prescribed interval in the direction orthogonal to the heat exchange air flowing direction, arranged in plural rows in the heat exchange air flowing direction, and forming a passage for conducting a heat exchange medium inside. The heat radiating fins have circular arc-shaped or bending-shaped cutout parts 5A arranged between mutual heat exchange pipe rows in the heat exchange air flowing direction. These cutout parts are continuously or independently arranged via divided parts 6 in at least two places.
Description
Technical field
The present invention relates to a kind of be used for air conditioner and freezer, refrigerator or goods showing cabinet (showcase) etc., at heat exchange medium---cold-producing medium and the heat exchanger that between the heat exchange air of this circulation, carries out heat exchange.
Technical background
The heat exchanger that is used to air conditioner, freezer, refrigerator or goods showing cabinet etc. is arranged side by side at certain intervals, be provided with in mutual gap and make a plurality of fin (radiator fin) of heat exchange air circulation, and run through be arranged between these fin, the heat exchanger tube (heat-exchanging tube) of its internal circulation cold-producing medium (heat exchange medium).
For the heat exchanger of so-called finned tube (finned-tube) type that adopts this kind formation, people carry out various effort with its heat exchange property of further raising always.
As: specially permit once proposed for No. 2706497 so a kind of heat exchanger, it is characterized in that, by be arranged between heat pipe row, wavy row transversal blocks plate-shaped fin (plate fin), and the concavo-convex of wavy edge that blocks formation is meshing with each other.
But, between heat exchanger tube row, separate the plate-shaped fin that constitutes fully, comparing tinyly with other fin apart from (pitch), thus, the fin whole rigidity is reduced with the mutual pipe layer of the heat exchanger tube of heat exchange air flow direction vertical direction.
Therefore, the problem of existence is, if reality is carried out punch process (press work) to plate-shaped fin, then because rigidity descends, can't carry out punch process well, influences finished product accuracy.
The present invention is conceived to above-mentioned situation, and purpose is: a kind of heat exchanger that can improve manufacturing property and heat exchange performance and cryogenic property (having the heating performance of frosting and defrosting concurrently) is provided.
Summary of the invention
For achieving the above object, heat exchanger of the present invention is provided with: be arranged side by side, make heat exchange air to flow through a plurality of fin in the mutual gap at certain intervals; Through row being set between these fin, on the direction vertical with the heat exchange air flow direction at certain intervals, multiple row, the inner heat exchanger tube that forms the stream of conducting heat exchange medium being set along the flow direction of heat exchange air, above-mentioned fin is when the above-mentioned multiple row heat exchanger tube of cross-over connection is integrally formed, be provided with along the flow direction of heat exchange air and be arranged at circular-arc or forniciform grooving portion between heat exchanger tube row, this grooving portion, can be at least to block portion by 2 continuous, or be provided with separately.
Have, constitute the circular shape or the curved shape of above-mentioned grooving portion, its protuberance is outstanding to the upwind of heat exchange air-flow from the medium line between the pipe row of heat exchanger tube, the above-mentioned portion of blocking be located at assortment in the relative following wind direction position of the heat exchanger tube of upwind.
Again, above-mentioned grooving portion can all be provided with separately, and the above-mentioned portion of blocking is decided at interval with each of the heat exchanger tube that is equipped on wind direction under the heat exchange air-flow, relatively is provided with each other with the heat exchanger tube that is arranged in weather side.
Again, be provided with the portion of blocking, to replace grooving portion at the foot of above-mentioned fin.
Again, at the foot of above-mentioned fin, at the bottom formation breach of undermost heat exchanger tube to that row heat exchanger tube far away of the distance between the fin lower surface.
Be positioned at the external diameter of that row heat exchanger tube of heat exchange air-flow downwind side greater than the external diameter of that row heat-exchange tube that is positioned at weather side again.
Again, if will be along the pipe row of the above-mentioned heat exchanger tube of heat exchange air current flow direction apart from (tube pitch) as L1, with the pipe layer of the above-mentioned heat exchanger tube of the flow direction vertical direction of heat exchange air apart from being L2, the distance on the summit from the heat exchanger tube center line of the downwind side of heat exchange air-flow row to above-mentioned grooving portion is H, the ora terminalis space of grooving portion is W, then:
0.55×L1≤H≤0.95×L1
0.65×L2≤W≤0.95×L2。
By adopting the method that solves this type of problem, can improve manufacturing property, heat exchange performance and heating performance.
Description of drawings
Fig. 1 is the cutaway view of the heat exchanger of demonstration the present invention the 1st example.
Fig. 2 is the cutaway view of the heat exchanger of the variation of demonstration the 1st example.
Fig. 3 is the cutaway view of the heat exchanger of another different distortion example of demonstration the 1st example.
Fig. 4 is the phantom of the heat exchanger of demonstration the present invention the 2nd example and the phantom of heat exchanger as a comparative example.
Fig. 5 is the phantom of the heat exchanger of demonstration the present invention the 3rd example.
Fig. 6 is the cutaway view of the heat exchanger of demonstration the present invention's the 4th example and the 5th example.
Fig. 7 is the phantom of the heat exchanger of demonstration the present invention the 6th example.
Fig. 8 is the cutaway view of the heat exchanger of demonstration the present invention the 7th example.
Fig. 9 is proof example result's various performance plot.
Among the figure, 2,2A: fin; 3: heat exchanger tube; 5A～5J is a grooving portion; 6,6A: block portion.
The specific embodiment
Below, example of the present invention is described with reference to the accompanying drawings.
Fig. 1 is the 1st example.It is the cutaway view of the heat exchanger of so-called fin-and-tube type (finned-tube type).
Above-mentioned heat exchanger 1A arranges with decided spaced and parallel, by mutual gap flow through heat exchange air a plurality of plate-shaped fins 2 and with the direction vertical direction of the face of these fin 2 on run through heat exchanger tube 3 formations of settings, its internal flow cold-producing medium (heat exchange medium).
Heat exchange air flows by diagram arrow Z direction, on the above-mentioned fin 2, is partitioned into surely with institute on the direction vertical with the flow direction of heat exchange air and one is listed as, is provided with multiple row (being 2) heat exchanger tube 3 here along the flow direction of heat exchange air.
Above-mentioned heat exchanger tube row 3 on the direction vertical with the heat exchange air flow direction, heat exchanger tube 3 decide to be called at interval the pipe layer each other apart from P, and the heat exchanger tube row of arranging along the flow direction of heat exchange air are called pipe row La, Lb.
Aforementioned tube row La is heat exchanger tube row 3 of being located at the upstream side of heat exchange air-flow, and aforementioned tube row Lb is heat exchanger tube row 3 of being located at the downstream side of heat exchange air-flow.
The pipe layer of each pipe row La, Lb is mutually the same apart from P, and the heat exchanger tube 3 on each pipe row La, Lb departs from 1/2nd position configuration of pipe layer apart from P, is so-called cross-over configuration.
Above-mentioned fin 2 on this heat exchanger 1A is provided with the described grooving 5A of portion in back.That is, the 5A of grooving portion is located between pipe row La, the Lb, is circular shape here.
The center of radius of the circular shape on the above-mentioned grooving 5A of portion is set in along on the center line of the heat exchange air-flow of the heat exchanger tube 3 on the side pipe row Lb under the wind of heat exchange air-flow Z.Therefore, each circular-arc grooving 5A is towards the side-prominent bending of windward, surrounds downwind side heat exchanger tube 3.
The upper end of fin 2 and the 5A of grooving portion on the bottom are provided with as the independent 5a of grooving portion respectively, are provided with the continuous 5b of grooving portion between these independent grooving 5a of portion.
Further specify, the lower end of being located at the 5a of grooving portion of upper end is provided with institute's fixed gap with the upper end of being located at the grooving 5b of bottom.The upper end of being located at the 5a of grooving portion of bottom is provided with institute's fixed gap with the lower end of being located at the 5b of grooving portion on top.
The continuous 5b of grooving portion, the ora terminalis of the grooving 5a of its independent shape are each other by being that unidirectional linearity grooving c is connected with the vertical direction of the flow direction of heat exchange air.Therefore, the continuous 5b of grooving portion is nearly wavy shape.
Owing to the independent grooving 5a of portion that constitutes like this and and the ora terminalis put of the continuous grooving 5b of portion subtend between do not carry out any processing part, that is, owing to be the position that the 5a of grooving portion, 5b are blocked, so will be called the portion of blocking 6 herein.
The feature of above-mentioned heat exchanger 1A is that the 5A of grooving portion that portion 6 is provided with continuous or independent shape blocks by 2 at least in fin 2 places.
The blade of complete divergence type formation is compared when being provided with the 5A of grooving portion with above-mentioned fin 2, can improve fin 2 whole rigidity, can carry out good fin punch process, improves manufacturing property.
And, by with the 5A of grooving portion with block pipe row La, Lb that portion 6 is arranged at heat exchanger tube 3 each other, the thermal conductivity of weather side and downwind side reduces, and fin radiating efficiency (fin efficiency) improves, and has improved heat exchange performance under the immovable situation of area of dissipation (fin area).
Fig. 2 is the variation of the 1st example---the cutaway view of heat exchanger 1B.Be provided with basically the pipe row La, the Lb that utilize the arrangement of the illustrated identical fin 2 of Fig. 1, heat exchanger tube 3 to constitute with the front and be located at heat exchanger tube 3 each other, the described grooving 5B of portion in back with block portion 6.
That is, it is characterized in that the grooving 5A that illustrates previously is circular shape, and the 5B of grooving portion here is curved shape.
The 5B of this grooving portion by put with the heat exchanger tube 3 center subtends of leeward side pipe row Lb, with the vertical direction of heat exchange air flow direction on linearly and constitute through the impartial part of separating the part that processes, tilting to install with upper and lower side up and down from this linearity part, form the heat exchanger tube 3 that surrounds leeward side pipe row Lb.
The upper end of fin 2 and bottom are provided with the independent grooving 5c of portion, and these independent grooving 5c of portion are provided with the continuous grooving 5d of portion each other.Continuously the 5d of grooving portion is the mutual ora terminalis that unidirectional linearity grooving c is connected the independent grooving 5c of portion by the vertical direction with the flow direction of heat exchange air, is nearly concaveconvex shape.
Like this, the independent grooving 5c that is constituted and the opposite end of the continuous 5d of grooving portion be intermarginal does not carry out any processing, becomes the portion of blocking 6 of blocking the 5c of grooving portion, 5d.
Be provided with action effect and explanation noted earlier identical of the above-mentioned grooving 5B of portion and the heat exchanger 1B that blocks portion 6, here, above please refer to, no longer elaboration.
Fig. 3 is the further variation of the 1st example---the cutaway view of heat exchanger 1C.
Described heat exchanger adopts the arrangement of heat exchanger tube 3 of the subtend fin 2 of top Fig. 1 explanation to constitute basically, be provided be located at heat exchanger tube 3 pipe row La, Lb each other, the described grooving 5C of portion in back with block portion 6.
Here, be characterised in that: be the long especially long chi shape fin 2A of above-below direction.That is, above-mentioned fin 2A is long chi shape, thus there is not independent grooving portion, but be provided with the 5C of grooving portion that all forms continuously.
Specifically, the 5e of grooving portion of the top and the bottom of fin 2A becomes 2 circular shapes respectively continuously, therebetween, is the shape that connects 5 continuous circular arc shape grooving 5f of portion and 4 continuous circular arc grooving 5g of portion.
Between the adjacent continuous circular arc shape grooving 5e～5g of portion, be provided with the portion of blocking 6 that does not carry out any processing.Be provided with 4 continuous circular arc shape grooving 5e～5g of portion owing to add up to, so these mutual portions of blocking 6 have 3 places.
This fin 2A is provided with the 5C of grooving portion and blocks action effect among the heat exchanger 1C of portion 6 and noted earlier identical, so on this please refer to, no longer set forth.
Fig. 4 (A) is the phantom as the heat exchanger 1D of the present invention's the 2nd example.
The arrangement that described heat exchanger is provided with fin 2, the heat exchanger tube 3 of prior figures 1 explanation basically constitute and the pipe row La, the Lb that are located at heat exchanger tube 3 each other, the described grooving 5D of portion in back and block portion 6.
It is characterized in that, being provided with all is circular shape and for the independent 5D of grooving portion here.In addition, constitute near the circular-arc apex of the above-mentioned grooving 5D of portion and part---protuberance d is outstanding from the medium line Lc windward side direction between pipe row La, the Lb of heat exchanger tube 3 it.
On above-mentioned heat exchanger 1D, the portion of blocking 6 that forms between two ora terminalis of the 5D of grooving portion separately is located at the downwind side position with heat exchanger tube 3 subtends of windward side pipe row La.
The heat exchanger 1D that now is provided with the 5D of grooving portion that adopts this kind formation and blocks portion 6 compares with grooving portion that is provided with formation shown in Figure 4 and the heat exchanger 1Z that blocks portion 6, is illustrated.
It all is circular shape and the independent 5Z of grooving portion that the heat exchanger 1Z of Fig. 4 (B) is provided with, alee side direction is outstanding is provided with from the medium line Lc between pipe row La, the Lb near the part apex of circular shape and its---protuberance d, blocks portion 6 and is located at weather side position with heat exchanger tube 3 subtends of leeward side pipe row Lb.
That is, projected direction is opposite each other to be located at the 5Z of grooving portion of the 5D of grooving portion and the heat exchanger 1Z that is located at Fig. 4 (B) of heat exchanger 1D of Fig. 4 (A), blocks the heat exchanger tube 3 position differences of portion's 6 subtends.
The heat exchanger 1D of above-mentioned explanation is used as the outdoor heat converter in the freeze cycle road of air conditioner, in the case, under low outdoor temperature environmental condition, the frosting phenomenon unavoidably occurred.
Usually, the frosting degree of weather side is more than downwind side, so the hot blast of discharging from compressor is set the heat exchanger tube 3 of the windward side pipe row La that at first leads, the frosting of removing weather side is then with the heat exchanger tube 3 of hot blast (hot-gas) guiding leeward side pipe row Lb.
Therefore, the temperature of the heat exchanger tube 3 of leeward side pipe row Lb is lower than the temperature of the heat exchanger tube 3 of windward side pipe row La, and according to this simple heat exchanger that constitutes, the defrosting effect at downwind side position is lower than the defrosting effect at weather side position.
Grooving 5Z as a comparative example, be arranged to heat exchanger tube 3 around windward side pipe row La, so even the heat of hot blast is passed to the downwind side position from the heat exchanger tube 3 of windward side pipe row La, but because the 5Z of grooving portion is cut off heat supply, the heat exchanger tube 3 of leeward side pipe row Lb descends with the defrosting effect of periphery.
Subtend therewith adopts the formation of Fig. 4 (A), and then the heat exchanger tube 3 at leeward side pipe row Lb forms the portion 6 of blocking each other, thus can be by the portion of blocking 6 from the heat exchanger tube 3 of the windward side pipe row La of direct supply hot blast well to the downwind side position heat supply of fin 2.
Therefore, can draw such conclusion, by such heat exchanger 1D, the defrosting effect at the downwind side position of fin 2 will be frequently than the formation of illustration 4 (B) well.
Fig. 5 is the phantom as the heat exchanger 1E of the present invention's the 3rd example.
It is identical and be located at the described grooving 5E of portion in back between pipe row La, the Lb of the heat exchanger tube 3 that illustrates in the 2nd example and block portion 6 that described heat exchanger is provided with the arrangement formation of heat exchanger tube 3 of subtend fin 2 of basic and the explanation of front the 1st example.
The above-mentioned grooving 5E of portion all is independent, circular shape, forms the portion 6 of blocking between each 5E of grooving portion.And the protuberance of the 5E of grooving portion is from the side-prominent setting of medium line windward between pipe row La, the Lb, blocks portion 6 and is located at downwind side position with heat exchanger tube 3 subtends of windward side pipe row La.
Therefore, by such heat exchanger 1E, can make heat exchanger 1E obtain the effect of available raising defrosting property in the 2nd example of front on the whole, defrosting effect further improves.
Fig. 6 (A) is the phantom as the heat exchanger 1F of the present invention's the 4th example.
Described heat exchanger be provided with basically the fin 2 of all having done explanation in front the 1st example (Fig. 1), the 2nd example (Fig. 4 (A)) and the 3rd example (Fig. 5) and heat exchanger tube 3 arrangement and the 5F of grooving portion, block portion 6.
The feature here is that at the foot of fin 2, replacement grooving portion 5 is provided with and blocks the 6A of portion.That is, the upper end of fin 2 is provided with circular shape and independent grooving 5a, and across the portion of blocking 6, lower side is provided with the continuous 5b of grooving portion.
The foot side of the continuous 5b of grooving portion with the heat exchanger tube 3 subtend settings of the second layer, with undermost heat exchanger tube 3 subtends, is not provided with grooving portion below leeward side pipe row Lb, replacing is the portion of blocking 6.
By such heat exchanger 1F, the weather side position of fin 2 and the thermal conductivity between the downwind side position will improve.Particularly, the defrosting raising of foot of the fin 2 of residual frost and residual ice is piled up, easily produced to the defrost water that flows down from top during defrosting.
And, in the above-described configuration, with the part of leeward side pipe row Lb orlop heat exchanger tube 3 subtends for blocking the 6A of portion, but be not limited to this, raising by heat exchange performance and have defrosting concurrently, orlop not only, also can with the expanded range of blocking the 6A of portion to the position of heat exchanger tube 3 subtends on its upper strata.
Fig. 6 (B) is the phantom as the heat exchanger 1G of the present invention's the 5th example.
The structure of described heat exchanger basically with front the 1st example (Fig. 1) to the 4th example (Fig. 6 (the A)) fin 2 that all is illustrated, the arrangement of heat exchanger tube 3, the 5G of grooving portion and to block the formation of portion 6 identical.
The feature here is, at the foot of fin 2, substitutes grooving 5G, is provided with and blocks the 6A of portion, in addition, also is provided with notch 7 in undermost heat exchanger tube 3 to the bottom of that row heat exchanger tube 3 far away of the distance between fin 2 lower surfaces.
That is, under the state of cutting before decreasing, the undermost heat exchanger tube 3 of leeward side pipe row Lb and the distance of fin 2 lower edge are than the heat exchanger tube 3 of windward side pipe row La and the distance of fin 2 lower edge.Orlop heat exchanger tube 3 bottoms on the leeward side pipe row Lb of fin 2 are damaged.
By making such heat exchanger 1G, can improve on the fin 2 heat exchanger tube 3 to that part of defrosting far away of the distance of fin 2 lower edge, and this part often can pile up the defrost water that flows down from top when defrosting, or be easy to generate residual frost and residual ice.
And, above-mentionedly cut the downwind side that damage portion 7 only is located at subtend heat exchange air-flow, but be not limited in this, according to the array structure difference of heat exchanger tube 3A, make weather side form notch part and also can obtain identical effect.
Fig. 7 is the phantom as the heat exchanger 1H of the present invention's the 6th example.Basically be provided with that fin 2, the heat exchanger tube 3A that front the 1st example (Fig. 1) all illustrates to the 5th example (6 (B)) arranges, the 5H of grooving portion and block portion 6.
Feature at this is, the external diameter of the heat exchanger tube 3A that is provided with along the leeward side pipe row Lb of heat exchange air-flow is greater than the external diameter of the heat exchanger tube 3 that is provided with along windward side pipe row La.
That is to say that as previously described, during defrosting, heat exchanger tube 3 temperature of leeward side pipe Lb are lower than the heat exchanger tube 3 of windward side pipe row La, in this simple heat exchanger that constitutes, along the defrosting decline of heat exchanger tube 3 peripheries of leeward side pipe row Lb.
Therefore, by the external diameter of the heat exchanger tube 3 of leeward side pipe row Lb being set the external diameter greater than the heat exchanger tube 3 of windward side pipe row La, utilize the heat exchanger tube 3A of leeward side pipe row Lb to import a large amount of hot blasts, these peripheries defrosting property will improve.
Fig. 8 is the phantom as the heat exchanger 1J of the invention process form 7.
Described heat exchanger is provided with arrangement, the 5J of grooving portion of fin 2 that front the 1st example (Fig. 1) all illustrates to the 6th example (Fig. 7), heat exchanger tube 3 basically and blocks portion 6.
If along the pipe row of the heat exchanger tube 3 of heat exchange air flow direction apart from being taken as L1, the pipe layer distance of the heat exchanger tube 3 of the direction vertical with the flow direction of heat exchange air is L2, heat exchanger tube 3 centerline LL of leeward side pipe row Lb to the distance on the summit of grooving portion 5 is H, be spaced apart W, following setting between the end margin f of grooving portion 5:
0.55×L1≤H≤0.95×L1
0.65×L2≤W≤0.95×L2
Above-mentioned numerical value is the basis that constitutes with Fig. 8, prepare leeward side pipe row Lb heat exchanger tube centerline LL to each the vicissitudinous fin of interval W between the ora terminalis f of the distance H on grooving portion 5 summits and grooving portion 5, and when it is carried out attribute testing respectively, from Fig. 9 (A) (B) shown in the result draw.
Fig. 9 (A) has shown the variation of heat exchanger tube outside diameter d, the pipe row cryogenic property Q apart from L1, pipe layer apart from L2, when various the variation taken place for the distance H on the circular-arc summit of grooving portion 5.And so-called cryogenic property is the heating performance that has frosting and defrosting concurrently.
According to the result of this figure as can be seen, for the pipe row apart from L1, the cryogenic property Q maximum in the time of about 0.7 times, on this basis, distance H is big more, or distance H is more little, then cryogenic property is more little.
Therefore, if for the peak of cryogenic property Q, the distance H with about 90% is decided to be best service limits, then as previously described, can draw such conclusion, to the distance H optimum range on the circular-arc summit of grooving portion 5 is:
0.55×L1≤H≤0.95×L1
And, shown heat exchanger tube outside diameter d, pipe row apart from L1, pipe layer apart from L2, fix as Fig. 9 (B), the variation of the interval between the ora terminalis f of grooving portion 5 (among the figure, the length of foot) W is various when changing cryogenic property Q to the distance H on the circular-arc summit of grooving portion 5.
Result according to this figure can know, for the pipe layer apart from L2, the cryogenic property Q maximum in the time of about 0.8 times, on this basis, the interval W between the ora terminalis of grooving portion is long more, or short more, then cryogenic property all will be low more.
Here, if for the peak of cryogenic property Q, the interval W with about 90% is decided to be the best scope of application, can draw such conclusion, and as mentioned above, the optimum range of the interval between the ora terminalis f of grooving portion 5 (foot's length) W is:
0.65×L2≤W≤0.95×L2
The grooving portion of above-mentioned Fig. 3 to Fig. 8 is circular shape, but is not limited in this, even all change bending grooving portion shown in Figure 2 into, also can not produce any influence.
As described above, the present invention has the manufacturing property that improves fin, improves the effect of heat exchange performance and cryogenic property (having the heating performance of frosting and defrosting concurrently) simultaneously as heat exchanger.
Claims (7)
1. a heat exchanger is characterized in that, described heat exchanger is provided with:
With a plurality of fin that decided to be arranged side by side at interval, that make the heat exchange air that in mutual gap, flows; Through between these fin, the direction vertical with the flow direction of heat exchange air with fixed interval one row are set, multiple row are set, constitute the heat exchanger tube of the stream of internal flow heat exchange medium at flow direction along heat exchange air,
Above-mentioned fin is provided with along the set each other circular-arc or forniciform grooving portion of the heat exchanger tube row of the flow direction of heat exchange air when the above-mentioned multiple row heat exchanger tube of cross-over connection is integrally formed;
Continuous or the setting separately by 2 portions of blocking at least of described grooving portion.
2. heat exchanger as claimed in claim 1 is characterized in that, forms the circular shape of above-mentioned grooving portion or the protuberance of curved shape, and is outstanding to the weather side direction of heat exchange air-flow from the pipe row medium line each other of heat exchanger tube;
The above-mentioned portion of blocking is located at the downwind side position relative with the heat exchanger tube that is arranged in weather side.
3. heat exchanger as claimed in claim 1 is characterized in that, above-mentioned grooving portion all is provided with separately, and above-mentioned truncation part not decide the interval with the institute of the heat exchanger tube of the downwind side that is arranged in the heat exchange air-flow, with the heat exchanger tube that is arranged in weather side setting relatively each other.
4. heat exchanger as claimed in claim 1 is characterized in that, is provided with the above-mentioned portion of blocking at the foot of above-mentioned fin.
5. heat exchanger as claimed in claim 1 is characterized in that, at the foot of above-mentioned fin, at the bottom formation breach of undermost heat exchanger tube to that row heat exchanger tube far away of the distance between the fin lower surface.
6. as claim 1 each described heat exchanger, it is characterized in that the external diameter of that row heat exchanger tube that is positioned at heat exchange air-flow downwind side is greater than the external diameter of that row heat exchanger tube that is positioned at weather side to claim 5.
7. heat exchanger as claimed in claim 3, it is characterized in that, along the pipe row of the above-mentioned heat exchanger tube of the flow direction of heat exchange air-flow apart from being taken as L1, the pipe layer distance of the above-mentioned heat exchanger tube of the direction vertical with the flow direction of heat exchange air is L2, the distance on the extremely above-mentioned grooving of the heat exchanger tube center line portion summit of the downwind side row of heat exchange air-flow is H, between the ora terminalis of grooving portion be spaced apart W the time
0.55×L1≤H≤0.95×L1
0.65×L2≤W≤0.95×L2。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002081843 | 2002-03-22 | ||
| JP2002081843A JP3872996B2 (en) | 2002-03-22 | 2002-03-22 | Heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1447085A CN1447085A (en) | 2003-10-08 |
| CN1303380C true CN1303380C (en) | 2007-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031074960A Expired - Fee Related CN1303380C (en) | 2002-03-22 | 2003-03-21 | Heat exchanger |
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| Country | Link |
|---|---|
| JP (1) | JP3872996B2 (en) |
| CN (1) | CN1303380C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4796814B2 (en) * | 2005-10-20 | 2011-10-19 | 東芝キヤリア株式会社 | Heat exchanger and air conditioner indoor unit |
| JP2010144965A (en) * | 2008-12-17 | 2010-07-01 | Corona Corp | Heat pump type hot-water heater |
| CN103080690A (en) * | 2011-08-01 | 2013-05-01 | 松下电器产业株式会社 | Heat exchanger |
| US20150211807A1 (en) * | 2014-01-29 | 2015-07-30 | Trane International Inc. | Heat Exchanger with Fluted Fin |
| CN104089518B (en) * | 2014-08-01 | 2016-04-06 | 兰州交通大学 | Elliptical tube fin-tube type heat exchanger is streamlined waits wave amplitude circular arc corrugated fin |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62142990A (en) * | 1985-12-17 | 1987-06-26 | Matsushita Electric Ind Co Ltd | Heat exchanger |
| JPH0854194A (en) * | 1994-08-10 | 1996-02-27 | Mitsubishi Electric Corp | Heat exchanger |
| JPH1010378A (en) * | 1996-06-25 | 1998-01-16 | Toshiba Corp | Coated optical fiber, optical fiber coil and production of coated optical fiber |
| JPH11264689A (en) * | 1998-03-18 | 1999-09-28 | Mitsubishi Electric Corp | Outdoor unit for air conditioner and manufacture of heat exchanger used therefor |
-
2002
- 2002-03-22 JP JP2002081843A patent/JP3872996B2/en not_active Expired - Lifetime
-
2003
- 2003-03-21 CN CNB031074960A patent/CN1303380C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62142990A (en) * | 1985-12-17 | 1987-06-26 | Matsushita Electric Ind Co Ltd | Heat exchanger |
| JPH0854194A (en) * | 1994-08-10 | 1996-02-27 | Mitsubishi Electric Corp | Heat exchanger |
| JPH1010378A (en) * | 1996-06-25 | 1998-01-16 | Toshiba Corp | Coated optical fiber, optical fiber coil and production of coated optical fiber |
| JPH11264689A (en) * | 1998-03-18 | 1999-09-28 | Mitsubishi Electric Corp | Outdoor unit for air conditioner and manufacture of heat exchanger used therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3872996B2 (en) | 2007-01-24 |
| CN1447085A (en) | 2003-10-08 |
| JP2003279281A (en) | 2003-10-02 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070307 Termination date: 20140321 |