CN204730526U - A kind of micro-channel heat exchanger with liquid separation structure - Google Patents
A kind of micro-channel heat exchanger with liquid separation structure Download PDFInfo
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- CN204730526U CN204730526U CN201520399004.1U CN201520399004U CN204730526U CN 204730526 U CN204730526 U CN 204730526U CN 201520399004 U CN201520399004 U CN 201520399004U CN 204730526 U CN204730526 U CN 204730526U
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Abstract
The utility model discloses a kind of micro-channel heat exchanger with liquid separation structure, comprise header and lower header, micro-channel flat, lower header or lower header fasten primarily of upper cover plate and lower cover clamping distributing pipe and form, upper cover plate is provided with along its length the flat tube slot of some connection micro-channel flat, upper cover plate, gap is left between lower cover and distributing pipe, demarcation strip is arranged with in parallel along its length inside upper cover plate and lower cover, inner rib plate is provided with in the axial direction in the inner chamber of distributing pipe, distributing pipe one end seals, its tube wall is provided with the some groups of tap hole collection that distribution district is communicated with flowing lumen one_to_one corresponding.Uniform refrigerant distributes in each flowing lumen by distributing pipe by the utility model; The refrigerant pressure flowing to each sector of distributing pipe increases, spray via the upper tap hole of pipe and enter each flowing lumen, make gas-liquid two-phase refrigerant mixed evenly after reallocate into flat tube, thus increase the distributing homogeneity of cold-producing medium in flat tube, improve heat exchanger heat exchange efficiency.
Description
Technical field
The utility model relates to a kind of micro-channel heat exchanger, is specifically related to a kind of micro-channel heat exchanger with liquid separation structure.
Background technology
Micro-channel heat exchanger, due to advantages such as its heat exchange efficiency are high, volume is little, lightweight, is applied to the field such as air conditioning for automobiles, domestic air conditioning gradually.Existing run-in index micro-channel heat exchanger is generally made up of two headers, the flat tube being communicated with two headers and louvered fin.Ideally, the distribution of cold-producing medium in each flat tube is uniform, and at this time the overall heat exchange efficiency of heat exchanger is best.But because flat tube is in elongate shape in reality, an input channel often correspond to hundreds of micro-channels, so when cold-producing medium flows into flat tube, be subject to the impact of gravity and on-way resistance, cold-producing medium distributes all can present very uneven phenomenon.
At present in the occasion that refrigerated medium heat is large, as the application of also rare micro-channel heat exchanger in coach air conditioner.Its main cause is existing for design more than large-area micro-channel heat exchanger many employings 3 flow process, but the design of multipaths can bring again, and pressure drop is excessive, the problem of compressor power consumption increase.So now for the design general recommendations employing single process of micro-channel heat exchanger or the design of few flow process.On the other hand, if adopt the design of single process, often reach tens up to a hundred for the distribution flat tube number corresponding to its single import of micro-channel heat exchanger that heat exchange area is large, the problem of cold-producing medium distributing uniformity difference is difficult to be solved.Therefore how for the concurrent flow micro-channel heat exchanger with large heat exchange area, aspect ratio, improving its cold-producing medium and distribute and drainage performance, thus promote whole system efficiency, is the problem that those skilled in the art are badly in need of solving.
Utility model content
The utility model aims to provide a kind of micro-channel heat exchanger with Novel diversion structure, to improve the drainage performance inserting the more micro-channel heat exchanger entrance distributing uniformity of flat tube number and fin.
For above-mentioned technical problem, the technical solution that the utility model provides is:
A kind of micro-channel heat exchanger with liquid separation structure, comprise header and lower header, be communicated with the micro-channel flat be arranged between header and lower header, described lower header or upper header fasten primarily of upper cover plate and lower cover clamping distributing pipe and form, upper cover plate is provided with along its length the flat tube slot of some connection micro-channel flat, described upper cover plate, gap is left between lower cover and distributing pipe, described upper cover plate be arranged with some demarcation strips described separated being become at least two independent flowing lumens inside lower cover along its length in parallel, be provided with in the axial direction in the inner chamber of described distributing pipe and some described inner chamber be divided into the inner rib plate that at least two are independently distributed district, the sealing of described distributing pipe one end, its tube wall is provided with the some groups of tap hole collection that distribution district is communicated with flowing lumen one_to_one corresponding, described flowing lumen, the quantity of distributing district and tap hole collection is consistent.
Further, the cross section of described distributing pipe is circle, ellipse, semicircle, rectangle, rhombus, triangle, or other can be evenly divided into the shape of N decile.
Further, every component discharge orifice collection comprises the equidistant aperture of 4-8 word order.
Further, louvered fin is provided with between adjacent described micro-channel flat.
Compared with prior art, uniform refrigerant is just divided into N equal portions by using the distributing pipe of N decile at refrigerant inlet place with the micro-channel heat exchanger of liquid separation structure by the utility model, then by different tap hole collection, cold-producing medium is sent to correspondence and independently circulates in cavity.And cold-producing medium pressure in distributing pipe can raise, after gas-liquid mixed refrigerant being mixed via the jet-action of tap hole collection, reallocation enters in each micro-channel flat, the use of this type distributing pipe improves the separatory uniformity of cold-producing medium in tens up to a hundred micro-channel flat greatly, and then promotes its heat exchange efficiency.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the utility model embodiment.
Fig. 2 is the exploded perspective view of the lower header of the utility model embodiment.
Fig. 3 is the structural representation of the separating tube of the utility model embodiment.
Fig. 4 is A place enlarged diagram in Fig. 3.
Fig. 5-Figure 10 is other embodiment cross sectional representation of the utility model separating tube.
Shown in figure: 1-outlet header; The upper header of 2-; 3-lower header; 31-lower cover; 32-upper cover plate; 321-flat tube slot; 33-flowing lumen; 34-demarcation strip; 4-louvered fin; 5-micro-channel flat; 6-distributing pipe; 61-tap hole collection; The sub-tap hole collection of 611 ~ 616-; The fan-shaped distribution district of 621 ~ 626-; 63-inner rib plate; 64-distributing pipe end casing.
Detailed description of the invention
Be described in further detail the purpose of this utility model below in conjunction with the drawings and specific embodiments, embodiment can not repeat one by one at this, but therefore embodiment of the present utility model is not defined in following examples.
As shown in Figures 1 to 4, a kind of micro-channel heat exchanger with liquid separation structure, comprise header 2 and lower header 3, be communicated with the micro-channel flat 5 be arranged between header 2 and lower header 3, louvered fin 4 is provided with between adjacent described micro-channel flat 5, the sealing of described upper header 2 one end, other end connection outlet collector 1, described lower header 3 clamps distributing pipe 6 fastening primarily of upper cover plate 32 and lower cover 31 and forms, the cross section of described distributing pipe 6 is circular, upper cover plate 32 is provided with along its length the flat tube slot 321 of some connection micro-channel flat 5, described upper cover plate 32, gap is left between lower cover 31 and distributing pipe 6, described upper cover plate 32 be arranged with some demarcation strips 34 described separated being become six independent flowing lumens 33 inside lower cover 31 along its length in parallel, be communicated with in the inner chamber of described distributing pipe 6 and be provided with the inner rib plate 63 that described inner chamber to be divided into six independently fan-shaped distribution districts 621 ~ 626 by six in the axial direction, described distributing pipe 6 one end is sealed by distributing pipe end casing 64, its tube wall is provided with and makes six fan-shaped distribution districts 621 ~ 626 and six independently tap hole collection 61 of being communicated with of cylindrical shape flowing lumen 33 one_to_one corresponding, described tap hole collection 61 comprises six sub-tap hole collection 611 ~ 616, each sub-tap hole collection 611 ~ 616 comprises the equidistant aperture of six word orders, each sub-tap hole collection 611 ~ 616 presents 30 degree of angles vertically mutually, in the present embodiment, each flowing lumen 33 correspondence 5 ~ 20 micro-channel flat 5, each flowing lumen only corresponding tap hole collection 61 simultaneously, as fan-shaped distribution district 621 is communicated with sub-tap hole collection 611, fan-shaped distribution district 622 is communicated with sub-tap hole collection 612 ... by that analogy.
As shown in fig. 5-10, as distortion, the cross section of described distributing pipe 6 is except the circle of the present embodiment, can also adopt ellipse, semicircle, square, rectangle, rhombus, triangle can halved planform, its inner rib plate 63 shape of cross section be cross, fork-shaped, bifurcation font or fan-shaped etc.
In the present embodiment, distributing pipe 6 is positioned in lower header 3, and actual 6 pipes that distribute when implementing can be positioned in header 2, left and right header or double or many rows header.In the present embodiment, micro-channel flat 5 is vertically placed, and utilizes the discharge of condensate water on fin, improves its draining and presses down white performance.Preferably use as single cooling system evaporimeter, when biphase gas and liquid flow enters distributing pipe 6,6 fluid streams are distinguished into by each fan-shaped distribution, tap hole collection via different angles sprays each flowing lumen 33 entering lower header, and then reallocation enters evaporation and heat-exchange in micro-channel flat corresponding to each flowing lumen 4, the cold-producing medium of last gaseous state converges via upper header 2 and flows out from outlet header 1.In addition the present embodiment also can be used in heat pump, and when system heats, gaseous refrigerant is entered by 1 collector, and because the distributivity of gaseous refrigerant is fine, each flat tube is entered in very fast uniform distribution, in each flat tube, be condensed into liquid state, is finally compiled in distributing pipe 6 and flows out.
In technical solutions of the utility model, by arranging the distributing pipe 6 with repetitional structure, just cold-producing medium being divided into 6 deciles at the inflow entrance of cold-producing medium, being flowed in each independently flowing lumen by the tap hole of correspondence more afterwards.The distribution of uniform refrigerant has been entered each flowing lumen by one, two refrigerant pressures entering distributing pipe sector raise, spray via each tap hole collection the chamber that circulates, kinetic energy increases, make gas-liquid two-phase refrigerant mixed evenly after reallocate into each micro-channel flat.Reduce cold-producing medium corresponding to single flowing lumen simultaneously and distribute flat tube number, be very suitable for length comparatively large, there is aspect ratio, insert the more micro-channel heat exchanger of flat tube number.In addition, micro-channel heat exchanger vertically places the draining being also conducive to louvered fin.
When the present embodiment is used for heat pump refrigeration, biphase gas and liquid flow is entered by lower header, and the distribution through distributing pipe enters each flowing lumen, flashes to gaseous state afterwards in micro-channel flat, converges at header and flows out.When heating for heat pump, micro-channel heat exchanger uses as condenser, and gaseous refrigerant flows into from upper header, because gaseous refrigerant distributivity is fine, be assigned to so well-proportioned in each flat tube, be condensed into liquid refrigerant and converge outflow from lower header.
Above-described embodiment of the present utility model is only for the utility model example is clearly described, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.All do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., within the protection domain that all should be included in the utility model claim.
Claims (4)
1. the micro-channel heat exchanger with liquid separation structure, comprises header and lower header, connection and is arranged at micro-channel flat between header and lower header, it is characterized in that:
Described lower header or upper header fasten primarily of upper cover plate and lower cover clamping distributing pipe and form, upper cover plate is provided with along its length the flat tube slot of some connection micro-channel flat, described upper cover plate, gap is left between lower cover and distributing pipe, described upper cover plate be arranged with some demarcation strips described separated being become at least two independent flowing lumens inside lower cover along its length in parallel, be provided with in the axial direction in the inner chamber of described distributing pipe and some described inner chamber be divided into the inner rib plate that at least two are independently distributed district, the sealing of described distributing pipe one end, its tube wall is provided with the some groups of tap hole collection that distribution district is communicated with flowing lumen one_to_one corresponding, described flowing lumen, the quantity of distributing district and tap hole collection is consistent.
2. a kind of micro-channel heat exchanger with liquid separation structure according to claim 1, is characterized in that: the cross section of described distributing pipe is circle, ellipse, semicircle, rectangle, rhombus, triangle.
3. a kind of micro-channel heat exchanger with liquid separation structure according to claim 1, is characterized in that: every component discharge orifice collection comprises the equidistant aperture of 4-8 word order.
4. a kind of micro-channel heat exchanger with liquid separation structure according to claim 1, is characterized in that: be provided with louvered fin between adjacent described micro-channel flat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520399004.1U CN204730526U (en) | 2015-06-10 | 2015-06-10 | A kind of micro-channel heat exchanger with liquid separation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520399004.1U CN204730526U (en) | 2015-06-10 | 2015-06-10 | A kind of micro-channel heat exchanger with liquid separation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204730526U true CN204730526U (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520399004.1U Expired - Fee Related CN204730526U (en) | 2015-06-10 | 2015-06-10 | A kind of micro-channel heat exchanger with liquid separation structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913547A (en) * | 2015-06-10 | 2015-09-16 | 华南理工大学 | Microchannel heat exchanger with liquid separating structure |
| CN106016841A (en) * | 2016-05-12 | 2016-10-12 | 南京师范大学 | Microchannel heat pipe evaporator |
| CN108613437A (en) * | 2018-05-03 | 2018-10-02 | 珠海格力电器股份有限公司 | Heat-exchanger rig and air conditioner with it |
-
2015
- 2015-06-10 CN CN201520399004.1U patent/CN204730526U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913547A (en) * | 2015-06-10 | 2015-09-16 | 华南理工大学 | Microchannel heat exchanger with liquid separating structure |
| CN106016841A (en) * | 2016-05-12 | 2016-10-12 | 南京师范大学 | Microchannel heat pipe evaporator |
| CN106016841B (en) * | 2016-05-12 | 2018-05-15 | 南京师范大学 | A kind of micro channel heat pipe evaporator |
| CN108613437A (en) * | 2018-05-03 | 2018-10-02 | 珠海格力电器股份有限公司 | Heat-exchanger rig and air conditioner with it |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20180610 |
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| CF01 | Termination of patent right due to non-payment of annual fee |