CN103256834A - Oval tube finned type heat exchanger and upward air outlet air-conditioning outdoor unit - Google Patents
Oval tube finned type heat exchanger and upward air outlet air-conditioning outdoor unit Download PDFInfo
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- CN103256834A CN103256834A CN2013100561196A CN201310056119A CN103256834A CN 103256834 A CN103256834 A CN 103256834A CN 2013100561196 A CN2013100561196 A CN 2013100561196A CN 201310056119 A CN201310056119 A CN 201310056119A CN 103256834 A CN103256834 A CN 103256834A
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Abstract
The invention relates to a heat exchanger, and provides an oval tube finned type heat exchanger and an electrical appliance. The heat exchanger comprises a plurality of heat exchanging tubes, fins sleeved on the heat exchanging tubes and an end plate for fixing the fins. One lateral face of each fin is a windward face; and the other lateral face opposite to the windward face is a leeward face. The cross section of each heat exchanging tube is oval. Every heat exchanging tube is arranged obliquely; and an included angle is formed between a long axis direction of the oval cross section and the horizontal direction that air flows from the windward face to the leeward face. Since the heat exchanging tube are arranged obliquely, and the included angle is formed between the long axis direction of the oval cross section and the horizontal direction that air flows from the windward face to the leeward face, the air flows in and out through the heat exchanging tubes more smoothly when the heat exchanger is applied to air channels with inconsistent air inlet and outlet directions; and air lateral resistance, namely external resistance, of the heat exchanger is further reduced, and heat exchanging efficiency is improved.
Description
Technical field
The present invention relates to heat exchanger, more particularly, relate to the improvement of present pipe elliptical tube finned heat exchanger and the top air-out air-conditioner outdoor unit that adopts this improved elliptical tube finned heat exchanger.
Background technology
Fin-tube type heat exchanger has in refrigeration industry widely and uses as a kind of compact heat exchanger.For fin-tube type heat exchanger, air side heat exchange resistance accounts for about 80% of whole heat exchanger thermal resistance, so the reinforcement of air side performance always is the emphasis of research.In recent years, the elliptical tube finned heat exchanger occurred, this heat exchanger substitutes conventional pipe by adopting elliptical tube, reaches the purpose that reduces heat exchanger air side resistance, thereby has improved the heat exchange efficiency of heat exchanger.But this elliptical tube finned heat exchanger generally is applied to air intake and air-out when being unidirectional air channel, heat exchange efficiency is higher, as side air-out outdoor machine of air-conditioner air channel, because side air-out outdoor machine of air-conditioner air channel is post linearly, i.e. air intake and air-out is same direction, and elliptical tube is horizontally disposed with, its cross section long axis of ellipse direction is consistent with the air channel, under the identical situation of fin sheet type, the extrernal resistance of this elliptical tube heat exchanger is minimum, the heat exchange efficiency maximum like this.But for the inconsistent air channel of outlet and inlet direction, as top air-out type off-premises station air channel, cabinet type air conditioner indoor set air channel etc., use above-mentioned major axis elliptical tube finned heat exchanger in horizontal direction, heat exchange efficiency then will be applied to air intake and air-out air channel interpolation in the same way.This is that at this moment, elliptical tube cross section long axis of ellipse direction and air channel have produced phase difference because air intake direction and the air-out direction in top air-out type off-premises station air channel have changed 90 °, and therefore, the air side resistance increases, and heat exchange efficiency reduces greatly.
Summary of the invention
Technical problem to be solved by this invention is to overcome the defective of prior art, a kind of elliptical tube finned heat exchanger and top air-out air-conditioner outdoor unit are provided, and adopts this heat exchanger to improve the heat exchange efficiency in air intake, the inconsistent air channel of air-out direction greatly.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of elliptical tube fin-tube type heat exchanger is provided, comprise some heat exchanger tubes, be sleeved on each described heat exchanger tube fin and in order to the end plate of fixing described fin, one side of described fin is the windward side, the another side relative with described windward side is lee face, described heat exchanger tube cross section ovalize, each described heat exchanger tube is obliquely installed, and the long axis direction of its elliptic cross-section and wind have angle by described windward side between the horizontal direction of described lee face inflow.
Preferably, described angular range is 2 °～45 °.
Particularly, the long axis direction of each described its elliptic cross-section of heat exchanger tube is identical to the angle angle between the horizontal direction of described lee face inflow by described windward side with wind.
Perhaps, the long axis direction of each described its elliptic cross-section of heat exchanger tube is different to the angle angle between the horizontal direction of described lee face inflow by described windward side with wind.
Particularly, the oval-shaped middle position that is centered close between described windward side and the described lee face, described heat exchanger tube cross section.
Perhaps, the spacing between described oval-shaped center, heat exchanger tube cross section and the described lee face is less than the spacing between oval-shaped center, described heat exchanger tube cross section and the described windward side.
Perhaps, the spacing between described oval-shaped center, heat exchanger tube cross section and the described lee face is greater than the spacing between oval-shaped center, described heat exchanger tube cross section and the described windward side.
The present invention also provides a kind of electrical equipment, and it includes above-mentioned elliptical tube fin-tube type heat exchanger.
Among the present invention, because heat exchanger tube is obliquely installed, has angle between the horizontal direction that the long axis direction of its elliptic cross-section and wind are gone into to leeward surface current by the windward side, like this with its heat exchanger applications when air intake, the inconsistent air channel of air-out direction, it is more smooth and easy to flow during turnover wind process heat exchanger tube, can further reduce heat exchanger air side resistance is extrernal resistance, improves heat exchange efficiency.
Description of drawings
Fig. 1 is elliptical tube fin-tube type heat exchanger one preferred embodiment structural representation provided by the invention;
Fig. 2 is the front view of elliptical tube fin-tube type heat exchanger in the embodiment of the invention, and the wind direction when showing it and carrying out heat exchange;
Fig. 3 is A-A cutaway view among Fig. 1;
Fig. 4 is C place enlarged drawing among Fig. 3;
Fig. 5 is B-B cutaway view among Fig. 1;
Fig. 6 is D place enlarged drawing among Fig. 5;
Fig. 7 is the structural representation of a kind of electrical equipment top air-out air-conditioner outdoor unit provided by the invention.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
With reference to Fig. 1, a kind of elliptical tube fin-tube type heat exchanger provided by the invention, comprise some heat exchanger tubes that are arranged in parallel 100, be sleeved on each heat exchanger tube 100 fin 200 and in order to the fixing end plate 300 of fin 200.In the present embodiment, each heat exchanger tube 100 all is bent into the U-shaped shape, and fin 200 takes the shape of the letter U along the heat exchanger tube 100 suit cross sectional shapes of U-shaped shape.And the fin 200 that cross sectional shape takes the shape of the letter U comprises two fin portions 210 of opposing parallel and be connected in bottom fin 220 between the two fin portions 210.Two wing place portions 210 are parallel and be oppositely arranged, and each fin portion 210 opposite external side face is windward side 211, and each fin portion 210 opposed inside face is lee face 212.With reference to Fig. 2, when the elliptical tube fin-tube type heat exchanger carried out heat exchange, outside wind was entered by two windward sides 211 of two fin portions 210 respectively, flowed out from lee face 212, and finally flowed out by the top of elliptical tube fin-tube type heat exchanger, turnover wind flow track is shown in arrow among Fig. 2.
With reference to Fig. 3, Fig. 4, in the present embodiment, each heat exchanger tube 100 cross section ovalize, each heat exchanger tube 100 is obliquely installed, and the long axis direction of its elliptic cross-section and wind have angle theta by windward side 211 between the horizontal direction of lee face 212 inflows.Because wind 211 enters from the windward side, flow out final the making progress in back by lee face 212 and flow, and here heat exchanger tube 100 is obliquely installed, it is more smooth and easy to flow when passing in and out wind through heat exchanger tube 100 like this, further reducing heat exchanger air side resistance is extrernal resistance, improves heat exchange efficiency.
Herein, the size of angle theta depends on the intraductal heat exchange situation of the flow field situation that passes in and out wind and each heat exchanger tube 100 self in the heat exchanger.For satisfying the heat exchange demand, the outer heat exchange amount QA that increases of pipe must be greater than the heat exchange amount QB of loss in tube.Usually, when angle theta was consistent with the turnover wind direction, runner was the most smooth and easy, flow resistance minimum, heat transfer outside a tube increment QA maximum; And in the pipe, it then is the increase along with angle theta, the pipe internal resistance increases, wetting areas reduces, heat exchange loss amount QB progressively increases, because the heat exchange of finned heat exchanger is to depend on heat transfer outside a tube mostly, thus QA＞＞QB, so in the present embodiment, be incorporated into air-out wind direction characteristic changing cross section and be oval heat exchanger tube and the relative position of fin, be about to the certain angle θ of heat exchanger tube inclination, improved the wind flow situation, reduced the heat exchanger extrernal resistance, thereby obtained heat exchanger heat transfer outside a tube increment QA, because of QA＞＞QB, can obtain certain heat exchange gain (QA-QB), thereby improve the heat exchange effect of whole heat exchanger.
In conjunction with Fig. 5, Fig. 6, because in the present embodiment, each heat exchanger tube 100 is bent into the U-shaped shape, be that symmetry tilts by visible heat exchanger tube 100 parallel two parts in A-A, the B-B cutaway view among Fig. 1, the parallel two parts of heat exchanger tube all are that the distinguished and admirable horizontal direction of going into the fin portion 210 at place separately is that direction has angle theta shown in Fig. 4, Fig. 6 arrow.
In the present embodiment, preferably, the angle theta scope is 2 °～45 °.For the inconsistent air channel of turnover wind direction, adopt new type heat exchanger recited above, it is more smooth and easy to flow during turnover wind process heat exchanger tube 100, and can reduce heat exchanger air side resistance greatly is extrernal resistance, improves heat exchange efficiency.
In the present embodiment, the angle of inclination of each heat exchanger tube 100 is identical, namely is that the long axis direction of each heat exchanger tube 100 its elliptic cross-section is identical to the angle theta angle between the horizontal direction of lee face 212 inflows by windward side 211 with wind.Because each heat exchanger tube 100 is from top to bottom arranged, so also can be according to diverse location, the angle of inclination of exchange heat pipe 100 is adjusted, and namely the long axis direction of each heat exchanger tube 100 its elliptic cross-section is different to the angle theta angle between the horizontal direction of lee face 212 inflows by windward side 211 with wind.Particularly, the heat exchanger tube 100 that is arranged in parallel can be divided into and be positioned at end plate 300 tops, middle part and bottom three parts, thereby the variation that different angles adapts to wind direction is set like this.
Referring again to Fig. 4, Fig. 6, each heat exchanger tube 100 parallel two parts all is to be centrally placed in the corresponding fin portion 210.It is the oval-shaped middle position that is centered close between windward side 211 and the lee face 212, heat exchanger tube cross section.Certainly, also heat exchanger tube 100 can be offset, when heat exchanger tube 100 is moved near lee face 212, namely the spacing between oval-shaped center, heat exchanger tube cross section and the lee face 212 is less than the spacing between oval-shaped center, heat exchanger tube cross section and the windward side 211.Or, heat exchanger tube 100 is moved away from lee face 212, namely the spacing between oval-shaped center, heat exchanger tube cross section and the lee face 212 is greater than the spacing between oval-shaped center, heat exchanger tube cross section and the windward side 211.
With reference to Fig. 7, the present invention also provides a kind of electrical equipment, is specially the top air-out air-conditioner outdoor unit, comprises off-premises station body 300, and off-premises station body 300 has side air inlet and ejects the air channel 310 of mouthful air-out, is provided with above-mentioned elliptical tube pipe finned heat exchanger in the air channel 310.Above-mentioned elliptical tube pipe finned heat exchanger is applied to the top air-out air-conditioner outdoor unit, it is more smooth and easy to flow when the wind in the air channel passes through heat exchanger tube 100, further reducing heat exchanger air side resistance is extrernal resistance, improve heat exchange efficiency, thereby optimized whole air-conditioning system, improved the Energy Efficiency Ratio (EER/COP) of air-conditioning system.
Above-mentioned elliptical tube pipe finned heat exchanger is not limited only to evaporating state, also is applicable to condensing state; This heat exchanger is not only applicable to above-mentioned top air-out air-conditioner outdoor unit, is applicable to indoor cabinet-type air conditioner, on-hook or various electrical equipment such as furred ceiling machine and Teat pump boiler yet.
Below only be preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. elliptical tube fin-tube type heat exchanger, comprise some heat exchanger tubes, be sleeved on each described heat exchanger tube some fins and in order to the end plate of fixing described fin, one side of the fins set that described fin is formed is the windward side, the another side relative with described windward side is lee face, described heat exchanger tube cross section ovalize, it is characterized in that: each described heat exchanger tube is obliquely installed, and the long axis direction of its elliptic cross-section and wind have angle by described windward side between the horizontal direction of described lee face inflow.
2. elliptical tube fin-tube type heat exchanger as claimed in claim 1, it is characterized in that: described angular range is 2 °～45 °.
3. elliptical tube fin-tube type heat exchanger as claimed in claim 1 or 2 is characterized in that: the angle angle between the horizontal direction that the long axis direction of each described its elliptic cross-section of heat exchanger tube and wind are flowed into to described lee face by described windward side is identical.
4. elliptical tube fin-tube type heat exchanger as claimed in claim 1 or 2 is characterized in that: the angle angle between the horizontal direction that the long axis direction of each described its elliptic cross-section of heat exchanger tube and wind are flowed into to described lee face by described windward side is different.
5. elliptical tube pipe finned heat exchanger as claimed in claim 1 or 2 is characterized in that: the oval-shaped middle position that is centered close between described windward side and the described lee face, described heat exchanger tube cross section.
6. elliptical tube pipe finned heat exchanger as claimed in claim 1 or 2, it is characterized in that: the spacing between oval-shaped center, described heat exchanger tube cross section and the described lee face is less than the spacing between oval-shaped center, described heat exchanger tube cross section and the described windward side.
7. elliptical tube pipe finned heat exchanger as claimed in claim 1 or 2, it is characterized in that: the spacing between oval-shaped center, described heat exchanger tube cross section and the described lee face is greater than the spacing between oval-shaped center, described heat exchanger tube cross section and the described windward side.
8. electrical equipment, it is characterized in that: it includes as each described elliptical tube pipe finned heat exchanger in the claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100561196A CN103256834A (en) | 2013-02-22 | 2013-02-22 | Oval tube finned type heat exchanger and upward air outlet air-conditioning outdoor unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100561196A CN103256834A (en) | 2013-02-22 | 2013-02-22 | Oval tube finned type heat exchanger and upward air outlet air-conditioning outdoor unit |
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| CN103256834A true CN103256834A (en) | 2013-08-21 |
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| CN2013100561196A Pending CN103256834A (en) | 2013-02-22 | 2013-02-22 | Oval tube finned type heat exchanger and upward air outlet air-conditioning outdoor unit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501317A (en) * | 2014-12-10 | 2015-04-08 | 上海科凌能源科技有限公司 | Outdoor heat exchange structure for bidirectional air suction type air conditioner |
| CN106225068A (en) * | 2016-08-25 | 2016-12-14 | 珠海格力电器股份有限公司 | Heat exchanger and indoor apparatus of air conditioner |
| CN107159062A (en) * | 2017-06-16 | 2017-09-15 | 湖南安淳高新技术有限公司 | Reactor |
| CN108507235A (en) * | 2018-04-12 | 2018-09-07 | 珠海格力电器股份有限公司 | A kind of asymmetric heat exchanger and air conditioner |
| CN109782514A (en) * | 2017-11-15 | 2019-05-21 | 中强光电股份有限公司 | Radiating module |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1216364A (en) * | 1997-11-03 | 1999-05-12 | 三星电子株式会社 | Heat exchanger |
| CN102200405A (en) * | 2011-03-25 | 2011-09-28 | 兰州交通大学 | Combined triangular curved vortex generator type circular tube fin heat exchanger |
| CN203274549U (en) * | 2013-02-22 | 2013-11-06 | 广东美的电器股份有限公司 | Oval pipe fin type heat exchanger and air conditioner outdoor unit with air outlet at top |
-
2013
- 2013-02-22 CN CN2013100561196A patent/CN103256834A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1216364A (en) * | 1997-11-03 | 1999-05-12 | 三星电子株式会社 | Heat exchanger |
| CN102200405A (en) * | 2011-03-25 | 2011-09-28 | 兰州交通大学 | Combined triangular curved vortex generator type circular tube fin heat exchanger |
| CN203274549U (en) * | 2013-02-22 | 2013-11-06 | 广东美的电器股份有限公司 | Oval pipe fin type heat exchanger and air conditioner outdoor unit with air outlet at top |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104501317A (en) * | 2014-12-10 | 2015-04-08 | 上海科凌能源科技有限公司 | Outdoor heat exchange structure for bidirectional air suction type air conditioner |
| CN104501317B (en) * | 2014-12-10 | 2017-02-22 | 上海科凌能源科技有限公司 | Outdoor heat exchange structure for bidirectional air suction type air conditioner |
| CN106225068A (en) * | 2016-08-25 | 2016-12-14 | 珠海格力电器股份有限公司 | Heat exchanger and indoor apparatus of air conditioner |
| CN107159062A (en) * | 2017-06-16 | 2017-09-15 | 湖南安淳高新技术有限公司 | Reactor |
| CN107159062B (en) * | 2017-06-16 | 2019-05-17 | 湖南安淳高新技术有限公司 | Reactor |
| CN109782514A (en) * | 2017-11-15 | 2019-05-21 | 中强光电股份有限公司 | Radiating module |
| CN108507235A (en) * | 2018-04-12 | 2018-09-07 | 珠海格力电器股份有限公司 | A kind of asymmetric heat exchanger and air conditioner |
| CN108507235B (en) * | 2018-04-12 | 2023-06-30 | 珠海格力电器股份有限公司 | Asymmetric heat exchanger and air conditioner |
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Owner name: MIDEA GROUP CO., LTD. Free format text: FORMER OWNER: GUANGDONG MIDEA REFRIGERATION EQUIPMENT CO., LTD. Effective date: 20131206 Owner name: GUANGDONG MIDEA REFRIGERATION EQUIPMENT CO., LTD. Free format text: FORMER OWNER: MEIDI ELECTRIC APPLIANCES CO., LTD., GUANGDONG Effective date: 20131206 |
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Effective date of registration: 20131206 Address after: 528311 Beijiao City, Guangdong Province, Shunde Town, Lin Gang Road, Foshan Applicant after: Guangdong Midea Refrigeration Equipment Co., Ltd. Applicant after: Midea Group Co., Ltd. Address before: 528311 Beijiao, Foshan, Shunde District, the town of Guangdong, the United States Avenue, No. 6 Applicant before: Meidi Electric Appliances Co., Ltd., Guangdong Applicant before: Guangdong Midea Refrigeration Equipment Co., Ltd. |
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Application publication date: 20130821 |