CN1204044A - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
- Publication number
- CN1204044A CN1204044A CN 98114868 CN98114868A CN1204044A CN 1204044 A CN1204044 A CN 1204044A CN 98114868 CN98114868 CN 98114868 CN 98114868 A CN98114868 A CN 98114868A CN 1204044 A CN1204044 A CN 1204044A
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- fin
- notch
- air
- heat exchanging
- exchanging pipe
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Abstract
A heat exchanger includes multiple heat exchange pipelines disposed in multiple rows and parallel with each other and multiple plate fins. These fins have intervals between each other for air flow and parallel with each other, and they are vertically combined with the heat exchange pipelines, these fins have plurality of through holes for the heat exchange pipelines pass through, each fin has multiple notch gibbosity parts which protruding from the plate along the notch part crosscuts the air flow direction, the amount of the notch gibbosity parts formed in each row of heat exchange pipeline is increasing along the air flow direction. Therefore, uniform and effective heat exchange can be provided on the whole fin surface.
Description
The present invention relates to heat exchanger, specifically, relate to can make blast pressure loss minimum, and can be in heat exchanger carry out the heat exchanger of uniform heat exchange on the whole surface of used fin, improve heat exchange efficiency thus.
The fin tube type heat exchanger that is used as evaporimeter or condenser in air-conditioner or the refrigerator comprises the some parallel heat exchanging pipe of multiple row and some plate fin be arranged to each other, these fins leave the interval that air flows to each other, and be parallel to each other, and vertically combine with heat exchanging pipe.Some through holes that heat exchanging pipe is passed through are arranged on these fins.Flow through the air that the cooling agent of heat exchanging pipe and pressure fan force to send and carry out heat exchange, the air that pressure fan is sent and the longitudinal cutting of heat exchanging pipe, the plate face along fin of that is to say is by heat exchanging pipe and fin.
Fig. 5 is the partial plan layout of traditional fin used in the heat exchanger, and Fig. 6 is the part sectioned view of doing along the II-II line of Fig. 5.Can see from Fig. 5 and 6, plate fin 71 comprises some through hole 75 and some notch juts 77 and 79 that the heat exchanging pipe that transmits cooling agent is passed through, these juts stretch out along notch 72 from the bottom 73 of fin, the air-flow direction crosscut of slot-open-section and fin bottom 73.These notch juts 77 and 79 alternately two sides of slave plate stretch out along air-flow direction.Therefore crooked up and down along the moving extraneous air stream of plate surface current with respect to the plate face of fin bottom 73, heat exchange between the cooling agent in air and the heat exchanging pipe, as shown in Figure 6.
When fin 71 was used in the heat exchanger, because the air and the temperature difference between the cooling agent in the upstream fin 81 are bigger, heat exchange amount was bigger, and the air in downstream fin section 85 and the temperature difference between the cooling agent are less, so heat exchange amount is smaller comparatively speaking.The variation of heat exchange amount descends the heat exchange efficiency of each fin or whole heat exchanger.
For example, when the condenser that heat exchanger is used as air-conditioner, and the notch jut 77 in used traditional fin 71 and 79 is when evenly distributing, then when the temperature of heat exchanging pipe and fin is 70 ℃, extraneous air is being about 30 ℃ by the temperature before the heat exchanger, high humidity is about at 75% o'clock, experimental results show that, the 50-70% of the total amount of heat that almost exchanges finishes in the first fin section 81, there is 30% heat exchange in the second fin section 83, to finish approximately, and has only the heat about 10% in the 3rd fin section 85, to exchange.
Particularly with heat exchanger during as the outdoor heat converter between air-conditioner heating moving period, and this air-conditioning both can be used as cooler when also can be used as heater, because the low temperature environment on every side and the evaporation latent heat of cooling agent, so compare with the fin section 85 at the outlet side place that carries out a spot of heat exchange, very likely knot one deck frost on the fin section 81 at the inlet side place that carries out a large amount of heat exchanges.The frost of being tied has stopped up the jut of notch, has hindered flowing of air, so just is difficult to carry out heat exchange in fin section 83 and 85 places.When during as the evaporimeter in the refrigerator, also there is similar problem in heat exchanger.
In order to address the above problem, the object of the present invention is to provide a kind of effectively heat exchanger of heat exchange that can on the whole surface of fin, carry out evenly.
In order to realize above-mentioned purpose of the present invention, heat exchanger provided by the invention comprises: some many rows and heat exchanging pipes parallel to each other be arranged to; And some plate fin, these fins leave the interval that air is flowed to each other, and be parallel to each other, and vertically combine with heat exchanging pipe, some through holes that heat exchanging pipe is passed through are arranged on these fins, wherein each fin comprises some notch juts, and these juts are along outstanding with the slot-open-section slave plate face of air-flow direction crosscut, and the notch jut quantity that forms in each heat exchanging pipe row increases gradually along air-flow direction.
From air-flow direction, be arranged on first heat exchanging pipe row of front end and preferably do not have the notch jut, and from air-flow direction, notch jut quantity on second heat exchanging pipe row of first heat exchanging pipe row back is about 50% to 80% of notch jut quantity on the 3rd heat exchanging pipe row, so that prevent to increase air flow resistance during defrosting.
Aspect manufacturing technology, preferably each fin comprises some fin sections, and at least one heat exchanging pipe belongs to these fin sections, and at least a portion of fin section is separated manufacturing with remaining fin section, then they is connected to each other.
In order to carry out heat exchange effectively, can the notch jut be lined up arc along the periphery of adjacent through-holes.
Describe structure of the present invention and ruuning situation in conjunction with the drawings in detail, can more be expressly understood above-mentioned purpose of the present invention and advantage.
Fig. 1 is a partial plan layout, and it shows the fin of the heat exchanger that is used for one embodiment of the invention;
Fig. 2 is the local enlarged perspective of Fig. 1;
Fig. 3 is the amplification profile of doing along the I-I line of Fig. 1;
Fig. 4 is a partial plan layout, and it illustrates the fin of the heat exchanger that is used for another embodiment of the present invention;
Fig. 5 is a partial plan layout, and it shows the traditional type fin that is used for heat exchanger; With
Fig. 6 is the amplification profile of doing along the II-II line of Fig. 5.
Describe the preferred embodiments of the present invention in detail below in conjunction with accompanying drawing.As shown in Figure 1 to Figure 3, some through holes 5 that heat exchanging pipe is passed through are arranged on plate fin 1, cooling agent passes through heat exchanging pipe.On the width of fin 1, through hole 5 is lined up three rows.Like this, the heat exchanging pipe by through hole 5 also is divided into three rows.So fin 1 is divided into three fin sections 11,21 and 31, each heat extraction exchange pipeline belongs to these fin sections respectively.
Since on the fin of first fin section bottom 3 without any the notch jut, so in the first fin section 11 of air-flow direction front end (being upstream extremity) for board-like.Be arranged in the first fin section 11 the second and the 3rd fin section 21 and 31 afterwards successively, protrude some notch juts 23 and 25 along the slot-open-section 22 that is provided with the interval between the through hole 5 from its fin bottom 3.Described through hole and air-flow direction crosscut.Periphery along each through hole 5 is lined up arc with notch jut 23 and 25.
The notch jut 23 and 25 that forms in the second and the 3rd fin section 21 and 31 alternately stretches out from the two sides of the plate of fin bottom 3 respectively, forms the notch jut of zigzag thus.The gap that each notch jut 23 and 25 each intervals are predetermined.
As shown in the figure, notch jut 23 that forms in the second fin section 21 and 25 quantity are less than the notch jut mark that forms in the 3rd fin section 31.In this embodiment, have in the 3rd fin section 31 in 6 notch juts 23 and 25, the second fin sections 21 3 notch juts 23 and 25 are arranged, that is to say 50% of the notch jut 23 that equals in the 3rd fin section 31 and 25 quantity.
Utilize this structure, from the upstream side to the downstream, the notch jut quantity of fin 1 increases gradually.Therefore, it is less to blow to the air flow resistance of air in the first fin section 11 of upstream side of fin 1.Than the first fin section 11, because the notch jut 23 and 25 in the second fin section 21, so the heat transfer area in the second fin section 21 increases.Than the second fin section 21, owing to increased notch jut 23 in the 3rd fin section 31 and 25 quantity, so the heat transfer area in the 3rd fin section 31 further increases.Thereby, in the air intlet part, that is to say the upstream portion that between wind pushing air and cooling agent, has the big temperature difference, keep little air flow resistance and little heat transfer area.Simultaneously, when air entered the downstream part that has the little temperature difference between wind pushing air and the cooling agent, air drag increased, and heat transfer area increases.So the pressure loss in the wind pushing air reduces, the heat transfer on the whole fin surface is more even.
In addition, although on heat exchanger, more or less have some frosts, but owing in the first fin section 11 of air intake side, do not have the notch jut, thus the pressure loss that flows and cause because of air still reduced, or say the loss that has reduced the wind pushing air amount.Thereby heat exchanger can long-play, thereby has improved its performance or its efficient.
Fig. 4 is the plane of the heat-exchanger fin 51 of another embodiment of the present invention.In this embodiment, there be not the first fin section 11 and the second and the 3rd fin section 21 of fin notch jut and opened manufacturing in 31 minutes.First fin 11 that to separately make by welding combines with second and third fin section 21 and 31.If separately make the first fin section that does not have the notch jut, just can reduce the processing cost that forms the notch jut.
As mentioned above, heat exchanger of the present invention can make the blast pressure loss reduce to minimum, and makes the heat transfer of whole fin surface more even, improves heat exchanger effectiveness thus.
Claims (5)
1. heat exchanger comprises:
Some many rows and heat exchanging pipes parallel to each other be arranged to, and
Some plate fin, these fins leave the interval that air is flowed to each other, and are parallel to each other, and vertically combine with heat exchanging pipe, and some through holes that heat exchanging pipe is passed through are arranged on these fins,
Wherein said each fin comprises some notch juts, these juts are along outstanding with the slot-open-section slave plate face of air-flow direction crosscut, and the quantity of the notch jut that forms in each heat exchanging pipe row increases gradually along air-flow direction.
2. heat exchanger according to claim 1 does not wherein form described notch jut in first heat exchanging pipe row of the front end of air-flow direction.
3. heat exchanger according to claim 2, wherein from air-flow direction, be in notch jut quantity among second heat exchanging pipe row of first heat exchanging pipe row back and be approximately 50% to 80% of notch jut quantity among the 3rd heat exchanging pipe row.
4. heat exchanger according to claim 2, wherein said each fin comprises some fin sections, and at least one heat exchanging pipe belongs to these fin sections, and at least a portion of fin section is separated manufacturing with remaining fin section, then they is connected to each other.
5. heat exchanger according to claim 4, wherein said notch jut is along the perimeter rows camber of adjacent through-holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98114868 CN1204044A (en) | 1997-05-30 | 1998-05-29 | Heat exchanger |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR21880/97 | 1997-05-30 | ||
| CN 98114868 CN1204044A (en) | 1997-05-30 | 1998-05-29 | Heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1204044A true CN1204044A (en) | 1999-01-06 |
Family
ID=5224350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98114868 Pending CN1204044A (en) | 1997-05-30 | 1998-05-29 | Heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1204044A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458354C (en) * | 2003-05-29 | 2009-02-04 | 汉拏空调株式会社 | Plate for heat exchanger |
-
1998
- 1998-05-29 CN CN 98114868 patent/CN1204044A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458354C (en) * | 2003-05-29 | 2009-02-04 | 汉拏空调株式会社 | Plate for heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |