CN102506523B - Parallel-flow heat exchanger - Google Patents
Parallel-flow heat exchanger Download PDFInfo
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- CN102506523B CN102506523B CN201110319847.2A CN201110319847A CN102506523B CN 102506523 B CN102506523 B CN 102506523B CN 201110319847 A CN201110319847 A CN 201110319847A CN 102506523 B CN102506523 B CN 102506523B
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Abstract
A kind of parallel-flow heat exchanger, comprise lower header, upper header, be arranged on several flat tubes between lower header, be arranged on fin between adjacent flat tube, homogenizing plate is provided with in lower header, homogenizing plate width is concave and convex surface shape or arc surfaced, arrange through hole being easy to homogenizing plate oil-collecting place, this homogenizing plate is divided into lower header the first cavity and the second cavity being connected flat tube that connect refrigerant pipe.In the present invention, refrigerant enters larger cavity by the through hole on homogenizing plate by less cavity, and because refrigerant flow channel expands, the refrigerant of gas-liquid two-phase can mix fully, improves the heat exchange efficiency of heat exchanger.When using as condenser, due to the curved surface of homogenizing plate width, the refrigeration oil collected from flat tube condensation can be pooled to the bottom of passage, flows back to coolant system by the through hole on homogenizing plate, thus affects refrigerant flowing and reduce the hold-up of refrigeration oil.It has feature simple and reasonable, that heat exchange efficiency is high, applied widely.
Description
Technical field
The present invention relates to a kind of parallel-flow heat exchanger.
Background technology
Parallel-flow heat exchanger, as the efficient heat exchanger of one, is used to increasing field.But common parallel-flow heat exchanger, in order to improve the current-sharing situation of refrigerant, arranges refrigerant homogenizing plate in the header of liquid side, the general homogenizing plate adopted is plate, arranges row or multiple row through hole in the centre of flat board, is communicated with two cavitys that homogenizing plate separates.But this form makes to install and is subject to the impact of structure larger.In addition due to the impact of slab construction, when refrigerant exists gas-liquid two-phase, the gaseous coolant just having top first flows out, and forms the separation of gas-liquid two-phase in flat tube side, thus reduces the heat transfer effect of heat exchanger.When heat exchanger is as condenser, when particularly condensation temperature is lower, has more refrigeration oil and separate out, the refrigeration oil condensed can be laid on the upper surface of homogenizing plate, many refrigeration oils can be collected, reduce the oil liquid level of compressor, worsen the flow effect of heat exchanger simultaneously.How to invent a kind of mixing improving gas-liquid two-phase refrigerant, the homogenizing plate knot that collects simultaneously reducing refrigeration oil forms problem demanding prompt solution.
Summary of the invention
Object of the present invention aims to provide a kind of simple and reasonable, parallel-flow heat exchanger that heat exchange efficiency is high, applied widely, to overcome weak point of the prior art.
By a kind of parallel-flow heat exchanger that this object designs, comprise lower header, upper header, be arranged on several flat tubes between lower header, be arranged on fin between adjacent flat tube, its architectural feature is provided with homogenizing plate in lower header, homogenizing plate width is concave and convex surface shape or arc surfaced, arrange through hole being easy to homogenizing plate oil-collecting place, this homogenizing plate is divided into lower header the first cavity and the second cavity being connected flat tube that connect refrigerant pipe.
Upper surface one end of described homogenizing plate is connected with location-plate, and is fixed on the upper wall of lower header, and the lower contact surface of location-plate and the shape of homogenizing plate junction are coincide.
Described homogenizing plate both sides are provided with convex arc, and the header inwall of convex arc and lower header junction fits tightly.
Described homogenizing plate width is concave curvatures, and recessed on the downside of lower header, passage wide narrow under the wall of this homogenizing plate depressed part is formed in the second cavity.
The recess of described homogenizing plate is provided with a row or two exhausting holes along lower header axis.
Described homogenizing plate width is convex surface, and convex in flat tube side, and the wall of this homogenizing plate lug boss and the header inwall of both sides form passage.
Direction along lower header axis on the curved surface of described homogenizing plate both sides is arranged with two exhausting holes.
The curved surface of described homogenizing plate both sides interlocks along the direction of lower header axis and is provided with two exhausting holes.
Described homogenizing plate width is spill cambered surface, and recessed on the downside of lower header, passage wide narrow under the arc surface of homogenizing plate is formed in the second cavity.
Direction along lower header axis on the arc surface of described homogenizing plate both sides is arranged with two exhausting holes.
In the present invention, refrigerant enters larger cavity by the through hole on homogenizing plate by less cavity, and because refrigerant flow channel expands, the refrigerant of gas-liquid two-phase can mix fully, improves the heat exchange efficiency of heat exchanger; When using as condenser, due to the curved surface of homogenizing plate width, the refrigeration oil collected from flat tube condensation can be pooled to the bottom of passage, flows back to coolant system by the through hole on homogenizing plate, thus affects refrigerant flowing and reduce the hold-up of refrigeration oil.It has feature simple and reasonable, that heat exchange efficiency is high, applied widely.
Accompanying drawing explanation
Fig. 1 is the lower header partial sectional view of one embodiment of the invention.
Fig. 2 is the lower header cross section enlarged drawing of an embodiment.
Fig. 3 is that enlarged drawing faced by the location-plate of an embodiment.
Fig. 4 is the lower header cross section enlarged drawing of the second embodiment.
Fig. 5 is the homogenizing plate stereogram of the second embodiment.
Fig. 6 is the homogenizing plate stereogram of the 3rd embodiment.
Fig. 7 is the lower header cross section enlarged drawing of the 4th embodiment.
Fig. 8 is the parallel-flow heat exchanger front view that prior art adopts.
In figure: 1 is lower header; 2 is upper header; 3 is flat tube; 4 is homogenizing plate; 5 is through hole; 6 is convex arc; 7 is passage; 8 is header inwall; 9 is the first cavity; 10 is the second cavity; 11 is location-plate; 12 is the lower contact surface of location-plate; 13 is refrigerant pipe.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
Figure 8 shows that parallel-flow heat exchanger of the prior art, comprise lower header 1, upper header 2, be arranged on several flat tubes 3 between lower header, be arranged on fin (not shown) between adjacent flat tube 3.When using as condenser, the refrigerant of gaseous state enters from the refrigerant pipe on top, through heat exchanger and the heat exchange of heat exchange medium, becomes liquid refrigerant and flows out parallel-flow heat exchanger from the refrigerant pipe 13 of lower header 1.
First embodiment
See Fig. 1-Fig. 3. a kind of parallel-flow heat exchanger, comprise lower header 1, upper header 2, be arranged on several flat tubes 3 between lower header, be arranged on fin between adjacent flat tube 3, be provided with homogenizing plate 4 in lower header 1, this homogenizing plate 4 is divided into lower header 1 the first cavity 9 and the second cavity 10 being connected flat tube 3 that connect refrigerant pipe 13.Homogenizing plate 4 width is concave curvatures, and recessed on the downside of lower header 1, passage 7 wide narrow under the wall of this homogenizing plate 4 depressed part is formed in the second cavity 10.Specifically as shown in Figure 2, the depressed part of homogenizing plate 4 is provided with through hole 5, when heat exchanger is as condenser, due to the curved surface of homogenizing plate 4, the refrigeration oil collected from flat tube 3 condensation can be pooled to the bottom of passage 7, and this place is in the present embodiment and is easy to homogenizing plate 4 oil-collecting place, such refrigeration oil just flow into the downside of homogenizing plate 4 easily through through hole 5, flow back to coolant system, can not collect on homogenizing plate 4, thus strengthen the hold-up of refrigerant flowing and minimizing refrigeration oil.
Further, as shown in Figure 2, homogenizing plate 4 is recessed on the downside of lower header 1, here recessed to refer to and non-tablet, but have depression downwards, here recessed on the downside of lower header 1, it is emphasised that the recessed opposite side to flat tube 3 side.As can be seen from the cross-sectional view of Fig. 2, due to the shape of homogenizing plate 4, passage 7 wide narrow under the wall of this homogenizing plate 4 depressed part is formed in the second cavity 10, the homogenizing plate 4 of described passage 7 bottom is provided with through hole 5.After the refrigerant in the first cavity 9 ejects from through hole 5, larger channel cross-section is expanded to from less channel cross-section, refrigerant advantageously in gas-liquid two-phase fully mixes, thus improves the refrigerant uniformity entering flat tube 3, improves the heat exchange efficiency of parallel-flow heat exchanger.
Upper surface one end of homogenizing plate 4 is connected with location-plate 11, and is fixed on the upper wall of lower header 1, and the lower contact surface 12 of location-plate coincide with the shape of homogenizing plate 4 junction; Homogenizing plate 4 and location-plate 11 are the first cavity 9 and the second cavity 10 parting seal.The contact area of homogenizing plate 4 and header inwall 8 can be expanded like this, be beneficial to the fixing and sealing of homogenizing plate 4 and header inwall 8, reduce because this contact surface leaks, and cause the uniformity of heat exchanger poor, affect heat exchanger quality.Homogenizing plate 4 is concave curvatures, and recessed on the downside of lower header 1, passage 7 wide narrow under the wall of this homogenizing plate 4 depressed part is formed in the second cavity 10.The recess of homogenizing plate 4 is provided with a row or two exhausting holes 5 along lower header 1 axis.Homogenizing plate 4 both sides are provided with convex arc 6, and convex arc 6 fits tightly with the header inwall 8 of lower header 1 junction.
When heat exchanger is as condenser, due to the concave curvatures of homogenizing plate 4, the refrigeration oil collected from flat tube 3 condensation can be pooled to the bottom of passage 7, thus the downside of homogenizing plate 4 is flow into by through hole 5, flow back to coolant system, can not collect on homogenizing plate 4, thus affect the hold-up of refrigerant flowing and minimizing refrigeration oil.After the refrigerant in the first cavity 9 ejects from through hole 5, from less passage 7 cross-sectional expansion to larger passage 7 cross section, refrigerant advantageously in gas-liquid two-phase fully mixes, thus improves the refrigerant uniformity entering flat tube 3, improves the heat exchange efficiency of parallel-flow heat exchanger.
Second embodiment
As shown in Figure 4, Figure 5, the shape of the present embodiment homogenizing plate 4 width is convex surface, homogenizing plate 5 is divided into header 2 the first cavity 9 and the second cavity 10 being connected flat tube 3 that connect refrigerant pipe 13, homogenizing plate 4 is convex in flat tube 3 side, be easy to homogenizing plate 4 oil-collecting place, namely the bending place of convex homogenizing plate 4 both sides to flat tube 3 is provided with through hole 5, specifically as shown in Figure 4, the bending place of the both sides of homogenizing plate 4 is provided with through hole 5.When heat exchanger is as condenser, due to the curved surface of homogenizing plate 4, the refrigeration oil collected from flat tube 3 condensation can be pooled to the bottom of passage 7, thus the downside of homogenizing plate 4 is flow into by through hole 5, flow back to coolant system, can not collect on homogenizing plate 4, thus affect the hold-up of refrigerant flowing and minimizing refrigeration oil.
See Fig. 4,5, the through hole 5 in the present embodiment is set to two rows, respectively in the two sides of homogenizing plate 4 bossing along the direction of header axis.Owing to being two longitudinal rows, be beneficial to processing and fabricating.
Further, as shown in Figure 4, homogenizing plate 4 is convex in flat tube 3 side, here convex to refer to and non-tablet, but upwards have projection, here convex to direction be flat tube side.As can be seen from the cross-sectional view of Fig. 4, due to the shape of homogenizing plate 4, the wall of this homogenizing plate 4 lug boss coordinates with the header inwall 8 of both sides respectively, and passage 7 wide narrow under being formed respectively in the second cavity 10, the homogenizing plate 4 of described passage 7 bottom is provided with through hole 5.After the refrigerant in the first cavity 9 ejects from through hole 5, larger channel cross-section is expanded to from less channel cross-section, refrigerant advantageously in gas-liquid two-phase fully mixes, thus improves the refrigerant uniformity entering flat tube 3, improves the heat exchange efficiency of parallel-flow heat exchanger.
As shown in Figure 4, homogenizing plate 4 both sides are provided with convex arc 6, concrete, and homogenizing plate 4 and header junction are provided with convex arc 6, and this convex arc 6 coincide with header inwall 8 shape of header junction.This convex arc 6 adopts the form bent inwards to be formed, easy to process, and the contact area of homogenizing plate 4 and header inwall 8 can be expanded like this, be beneficial to the fixing and sealing of homogenizing plate 4 and header inwall 8, reduce because this contact surface leaks, and cause the uniformity of heat exchanger poor, affect heat exchanger quality.
3rd embodiment
See Fig. 6, this parallel-flow heat exchanger, staggered along the direction of lower header 1 axis on the curved surface being described homogenizing plate 4 both sides is provided with two exhausting holes 5 with the main distinction of the second embodiment.The spacing of the through hole 5 often arranged can be expanded like this, reduce total hole count, improve the speed of the refrigerant flowed out from through hole 5, thus increase the uniformity of gas-liquid mixed further, improve the heat exchange efficiency of heat exchanger.Other does not state part, with the second embodiment.
4th embodiment
See Fig. 7, with the main distinction of the first embodiment, this parallel-flow heat exchanger, is that described homogenizing plate 4 width is spill cambered surface, and recessed circular arc on the downside of lower header 1, passage 7 wide narrow under the arc surface of homogenizing plate 4 is formed in the second cavity 10.The angle of knuckle can be reduced like this, reduce difficulty and the cost of processing.The arc surface of homogenizing plate 4 both sides is arranged with two exhausting holes 5 along the direction of lower header 1 axis.In the present embodiment, homogenizing plate 4 there is no convex arc 6.Other does not state part, with the first embodiment.
Claims (5)
1. a parallel-flow heat exchanger, comprise lower header (1), upper header (2), be arranged on several flat tubes (3) between lower header, be arranged on the fin between adjacent flat tube (3), it is characterized in that being provided with homogenizing plate (4) in lower header (1), the width of homogenizing plate (4) is concave and convex surface shape or arc surfaced, through hole (5) is set being easy to homogenizing plate (4) oil-collecting place, this homogenizing plate (4) is divided into lower header (1) the first cavity (9) and the second cavity (10) being connected flat tube (3) that connect refrigerant pipe (13),
Described homogenizing plate (4) width is convex surface, and convex in flat tube (3) side, and the wall of this homogenizing plate (4) lug boss and the header inwall (8) of both sides form passage (7).
2. parallel-flow heat exchanger according to claim 1, it is characterized in that upper surface one end of described homogenizing plate (4) is connected with location-plate (11), and being fixed on the upper wall of lower header (1), the lower contact surface (12) of location-plate coincide with the shape of homogenizing plate (4) junction.
3. parallel-flow heat exchanger according to claim 2, it is characterized in that described homogenizing plate (4) both sides are provided with convex arc (6), convex arc (6) fits tightly with the header inwall (8) of lower header (1) junction.
4. parallel-flow heat exchanger according to claim 1, the direction along lower header (1) axis on the curved surface that it is characterized in that described homogenizing plate (4) both sides is arranged with two exhausting holes (5).
5. parallel-flow heat exchanger according to claim 1, staggeredly along the direction of lower header (1) axis on the curved surface that it is characterized in that described homogenizing plate (4) both sides is provided with two exhausting holes (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110319847.2A CN102506523B (en) | 2011-10-19 | 2011-10-19 | Parallel-flow heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110319847.2A CN102506523B (en) | 2011-10-19 | 2011-10-19 | Parallel-flow heat exchanger |
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| Publication Number | Publication Date |
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| CN102506523A CN102506523A (en) | 2012-06-20 |
| CN102506523B true CN102506523B (en) | 2016-02-17 |
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| CN201110319847.2A Active CN102506523B (en) | 2011-10-19 | 2011-10-19 | Parallel-flow heat exchanger |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5741658B2 (en) * | 2013-09-11 | 2015-07-01 | ダイキン工業株式会社 | Heat exchanger and air conditioner |
| CN105444483B (en) * | 2015-11-05 | 2018-01-23 | 谭洪德 | A kind of flooded screw mechanism ice maker group |
| CN105299944B (en) * | 2015-11-05 | 2018-01-23 | 谭洪德 | A kind of full-liquid type central air conditioner system |
| CN105333650B (en) * | 2015-11-05 | 2018-01-23 | 谭洪德 | A kind of full-liquid type central air conditioner system spiral evaporator |
| CN112013710A (en) * | 2019-05-31 | 2020-12-01 | 浙江三花智能控制股份有限公司 | Distribution pipe and heat exchanger |
| CN114608352A (en) * | 2020-12-08 | 2022-06-10 | 杭州三花微通道换热器有限公司 | Heat exchanger |
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| JP2004177041A (en) * | 2002-11-28 | 2004-06-24 | Matsushita Electric Ind Co Ltd | Heat exchanger |
| JP2005127529A (en) * | 2003-10-21 | 2005-05-19 | Matsushita Electric Ind Co Ltd | Heat exchanger |
| CN101592448A (en) * | 2009-03-25 | 2009-12-02 | 江苏康泰热交换设备工程有限公司 | The distribution method of a kind of heat exchanger and heat exchanger inner fluid |
| CN101819003A (en) * | 2010-04-22 | 2010-09-01 | 鑫田集团有限公司 | Fastening pattern cutting collecting pipe of parallel flow condenser and processing technique thereof |
| CN201876184U (en) * | 2010-09-01 | 2011-06-22 | 珠海格力电器股份有限公司 | Current collecting pipe and heat exchanger with same |
| CN102200400A (en) * | 2011-06-23 | 2011-09-28 | 哈尔滨汽轮机厂辅机工程有限公司 | U-shaped fin tube bundle for steam-water separation reheater for megawatt nuclear power |
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2011
- 2011-10-19 CN CN201110319847.2A patent/CN102506523B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004177041A (en) * | 2002-11-28 | 2004-06-24 | Matsushita Electric Ind Co Ltd | Heat exchanger |
| JP2005127529A (en) * | 2003-10-21 | 2005-05-19 | Matsushita Electric Ind Co Ltd | Heat exchanger |
| CN101592448A (en) * | 2009-03-25 | 2009-12-02 | 江苏康泰热交换设备工程有限公司 | The distribution method of a kind of heat exchanger and heat exchanger inner fluid |
| CN101819003A (en) * | 2010-04-22 | 2010-09-01 | 鑫田集团有限公司 | Fastening pattern cutting collecting pipe of parallel flow condenser and processing technique thereof |
| CN201876184U (en) * | 2010-09-01 | 2011-06-22 | 珠海格力电器股份有限公司 | Current collecting pipe and heat exchanger with same |
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