CN205505502U - Microchannel heat exchanger and heat pump water heater - Google Patents
Microchannel heat exchanger and heat pump water heater Download PDFInfo
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- CN205505502U CN205505502U CN201620310392.6U CN201620310392U CN205505502U CN 205505502 U CN205505502 U CN 205505502U CN 201620310392 U CN201620310392 U CN 201620310392U CN 205505502 U CN205505502 U CN 205505502U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 10
- 239000002826 coolant Substances 0.000 claims description 66
- 230000000694 effects Effects 0.000 abstract description 14
- 239000003507 refrigerant Substances 0.000 abstract description 13
- 238000012546 transfer Methods 0.000 abstract description 4
- 238000004891 communication Methods 0.000 description 14
- 238000009413 insulation Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model relates to a microchannel heat exchanger and heat pump water heater, wherein, the microchannel heat exchanger includes: the device comprises a pressurizing part (6), a plurality of groups of microchannel tubes and two collecting tubes (2), wherein two ends of each group of microchannel tubes are respectively provided with one collecting tube (2), and at least one collecting tube (2) is provided with the pressurizing part (6) for increasing the flowing pressure of a refrigerant in the collecting tube (2). The utility model discloses a microchannel heat exchanger, through set up the pressure boost portion in at least one pressure manifold, when the refrigerant flows through the pressure boost portion along pressure manifold length direction, flowing pressure just can increase under the effect of pressure boost portion, loss of pressure when can compensating the refrigerant and flowing along pressure manifold length direction, thereby increase the velocity of flow of refrigerant in each microchannel pipe, make the velocity of flow and flow distribution in each microchannel pipe more even, and then make the temperature field of microchannel heat exchanger more even, in order to improve the holistic heat transfer state of microchannel heat exchanger, and improve heat exchange efficiency.
Description
Technical field
This utility model relates to technical field of heat exchange, particularly relates to a kind of micro-channel heat exchanger and heat
Pump water heater.
Background technology
In order to improve the heat exchange efficiency of Teat pump boiler, current Teat pump boiler is more likely to peace
Dress micro-channel heat exchanger.
Micro-channel heat exchanger is with the difference of usual heat exchanger, due to micro-channel heat exchanger
The cross-sectional area of middle access opening is less, therefore the heat transfer of minitype channel, mass transfer and flowing have it special
" dimensional effect ", be mainly manifested in: 1, thermal inertia with size reduce and reduce, thermal inertia
Reduction make process (such as: phase transition process) relatively difficult to achieve under stock size, permissible
Realize in short time under miniature scale.2, heat flow density is relatively big, and research shows when flowing size
Little to 0.5～1mm time, convection transfer rate can increase 50-100%.Thus use micro-logical
Road heat exchanger, can be effectively improved heat exchange efficiency, reduce the charging amount of system coolant simultaneously and alleviate
Water tank overall weight.
The structure that micro-channel heat exchanger of the prior art generally uses is as it is shown in figure 1, include:
Multiple flat tube 3a and two header 2a, are arranged side by side multiple micro-channel tubes in each flat tube 3a,
Two header 2a are respectively provided on the two ends of multiple flat tube 3a, and two header 2a respectively
It is provided with refrigerant inlet 1a and refrigerant exit 5a, in each header 2a, is equipped with thermal insulation board 4a,
For extending the flow path of coolant.
Operationally, coolant enters header 2a from refrigerant inlet 1a to this kind of micro-channel heat exchanger
Rear distribution is flowed in multiple micro-channel tubes, after arriving the header 2a of offside, by thermal insulation board
4a commutates, and thus realizes heat exchange during roundabout circulation, and last coolant goes out from coolant
Mouth 5a flows out the change of the state that realizes.
But, for this kind of micro-channel heat exchanger, coolant is in the mistake flowed along header 2a
Cheng Zhong, along with the increase of flow path, cold medium flux gradually decreases, thus there is also each micro-logical
The phenomenon of cold medium flux skewness in road, in each microchannel, flow distribution inequality directly contributes it
Heat exchange cross-section temperature field, the skewness of velocity field, thus lower leaf in water temperature in causing water tank
Problem.
Utility model content
The purpose of this utility model is to propose a kind of micro-channel heat exchanger and Teat pump boiler, it is possible to
The heat exchange making micro-channel heat exchanger is more uniform.
For achieving the above object, on the one hand this utility model provides a kind of micro-channel heat exchanger,
Including plenum, many group micro-channel tubes and two headers, the two ends organizing described micro-channel tubes more
Being respectively provided with a described header, at least one described header is provided with described plenum, is used for
Increase coolant flowing pressure in described header.
Further, described plenum is located at least in described header along coolant flow direction
Downstream position.
Further, described plenum is formed by described header, and described plenum is along described
The length direction of header is tapered towards the flow direction of coolant.
Further, described plenum is by a segment length of described header or whole length shape
Become.
Further, described plenum is cone barrel along the length direction of described header.
Further, the region outside described micro-channel tubes is located at described plenum.
Further, also include that noise-reducing structure, described noise-reducing structure are located in described plenum.
Further, described noise-reducing structure is the protuberance being located on described plenum inwall.
Further, described protuberance include at least two that is located on described plenum inwall from
Dissipate projection.
Further, described discrete projecting parts triangular shape.
Further, described plenum inwall is provided with multiple rows of discrete projecting parts, two adjacent row institutes
State discrete projecting parts staggered.
Further, described protuberance includes the continuous projection being located on described plenum inwall.
Further, described continuous projection is screw-like.
For achieving the above object, on the other hand this utility model provides a kind of Teat pump boiler,
Including the micro-channel heat exchanger described in above-described embodiment.
Based on technique scheme, micro-channel heat exchanger of the present utility model, by least one
Individual header arranges plenum, when coolant flows through plenum along header lengths direction,
Flowing pressure just can increase under the effect of plenum, can compensate coolant along header lengths side
The pressure loss when flowing, thus increase the flow velocity of coolant in each micro-channel tubes, make each micro-logical
Flow velocity and flow distribution in deferent are more uniform, and then make the temperature field of micro-channel heat exchanger more
Add uniformly, the heat exchange state overall to improve micro-channel heat exchanger, and improve heat exchange efficiency.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by of the present utility model, constitutes this
A part for application, schematic description and description of the present utility model is used for explaining this practicality
Novel, it is not intended that improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of prior art micro-channel heat exchanger；
Fig. 2 is the structural representation of an embodiment of this utility model micro-channel heat exchanger；
Fig. 3 is the structure of an embodiment of noise-reducing structure in this utility model micro-channel heat exchanger
Schematic diagram；
Fig. 4 is the knot of another embodiment of noise-reducing structure in this utility model micro-channel heat exchanger
Structure schematic diagram.
Description of reference numerals
1a-refrigerant inlet；2a-header；3a-flat tube；4a-thermal insulation board；5a-coolant
Outlet；
1-the first coolant communication port；2-header；3-flat tube；4-thermal insulation board；5-
Two coolant communication port；6-plenum；7-noise-reducing structure；71-discrete projecting parts；72-is continuous
Protruding.
Detailed description of the invention
This utility model described further below.In the following paragraphs, reality is defined in more detail
Execute the different aspect of example.The each side so limited can be with any other aspect or multiple
Aspect combines, and not can be combined.Especially it is considered to be preferably or favourable
Any feature can one or more with other be considered as the combination of preferred or favourable feature.
Term is merely for convenience retouches for " first ", " second " etc. occurred in this utility model
State, to distinguish the different building blocks with same names, be not offered as successively or primary-slave relation.
In description of the present utility model, it is to be understood that term " on ", " in ",
D score, " interior ", etc. the orientation of instruction or position relationship be based on orientation shown in the drawings or
Position relationship, is for only for ease of and describes this utility model rather than instruction or imply indication
Device must have specific orientation, with specific azimuth configuration and operation, be not understood that
For the restriction to this utility model protection domain.
Cold medium flux and velocity flow profile is there is not in order to improve micro-channel heat exchanger in prior art
Equal phenomenon, with solve micro-channel heat exchanger for Teat pump boiler time water temperature delamination problem,
This utility model provides a kind of micro-channel heat exchanger.In a schematic embodiment, as
Shown in Fig. 2, this micro-channel heat exchanger includes plenum 6, many group micro-channel tubes and two affluxs
Pipe 2, the headers 2 that are respectively arranged at the two ends with organizing micro-channel tubes, and micro-channel tubes and header more
2 connections, one end that two headers 2 are located remotely from each other is respectively equipped with the first coolant communication port 1 He
Second coolant communication port 5, when the function of micro-channel heat exchanger changes, i.e. at vaporizer and
Between condenser during switching, the two coolant communication port changes therewith as the function of import or export
Become.And, at least one header 2 is provided with plenum 6, is used for increasing coolant at header 2
Interior flowing pressure.
One at micro-channel tubes is arranged in form, as in figure 2 it is shown, often organizing micro-channel tubes pair
The position answered arranges a flat tube 3, and is mounted side by side in flat tube 3 by this group micro-channel tubes,
To facilitate the installation of micro-channel tubes.
The micro-channel heat exchanger of this embodiment preferably acts as condenser, from a coolant communication port
It is passed through gaseous coolant, carries out heat exchange, finally from another through micro-channel tubes and external environment condition
Individual coolant communication port flows out liquid refrigerants.Such as, for placing the microchannel in orientation shown in Fig. 2
Heat exchanger, can be passed through gaseous coolant from the first coolant communication port 1, real entering micro-channel tubes
During existing heat exchange, gaseous coolant gradates as liquid refrigerants, finally from the second coolant
Communication port 5 flows out.
During coolant enters micro-channel tubes and external environment condition carries out heat exchange, along with coolant
The increase of flow path, the pressure of coolant is also being gradually reduced, and embodiment of the present utility model is led to
Cross and plenum is set at least one header, be equivalent to arrange on the path of coolant flowing
Supercharging link, when coolant flows through plenum along header lengths direction, flowing pressure is just
Can increase under the effect of plenum, can compensate when coolant flows along header lengths direction
The pressure loss, thus increase the flow velocity of coolant in each micro-channel tubes, make the stream in each micro-channel tubes
Speed and flow distribution are more uniform, and then make the temperature field of micro-channel heat exchanger more uniformly, with
Improve the heat exchange state that micro-channel heat exchanger is overall, and improve heat exchange efficiency.
In general, when coolant arrival header 2 is along the middle and lower reaches position of coolant flow direction,
Can there is decay obviously in pressure, in conjunction with practical situation, in a preferred embodiment, increases
Splenium 6 is located at least in the header 2 middle and lower reaches position along coolant flow direction, so can increase
Add the heat exchange efficiency in micro-channel heat exchanger downstream, so that each position of whole micro-channel heat exchanger
Heat exchange ratio is more uniform.
There is multiple possible way of realization in this embodiment, such as: at one or two header
2 arrange plenum 6, if at two headers 2 along the middle and lower reaches position of coolant flow direction
Inside it is respectively provided with plenum 6, it is preferred to use symmetrically arranged mode；At header 2 along coolant stream
The middle and lower reaches position in dynamic direction arranges at one or many places plenum 6；At header 2 along coolant stream
Middle and lower reaches position and the upstream position in dynamic direction are respectively provided with plenum 6, etc..Wherein, under in
Trip position is to define for reference to outlet along header 2 length direction with coolant from import
, upstream, midstream and downstream can be defined by those skilled in the art according to practical situation,
Such as, by one of them header 2 from first coolant communication port the 1 to the second coolant communication port 5
Between length trisection, definition is upstream near the section of coolant import, and interlude is middle reaches,
Section near refrigerant exit is downstream.
For the form that arranges of plenum 6, those skilled in the art can be inside header 2
The position needing supercharging arranges plenum 6, it would however also be possible to employ another kind of relatively simple for structure and
Need not increase the extra form assembling link, specifically, plenum 6 is formed by header 2,
And plenum 6 is tapered towards the flow direction of coolant along the length direction of header 2.Tapered
The structure of shape is gradually reduced due to the cross-sectional area of pipe, it is thus possible to flow through plenum 6 at coolant
Shi Shixian pressure increases, to compensate coolant decay of pressure in flow process.Due to plenum
The setting of 6, the diameter that header 2 is positioned at plenum 6 both sides is different, near refrigerant exit
The diameter of section is less than the diameter near refrigerant inlet section.As in figure 2 it is shown, plenum 6 is from up to
Under be tapered, then the first coolant communication port 1 just as import, the second coolant communication port 5
Just as outlet.If changing coolant communication port as the function imported and exported, it is necessary to correspondingly
Change the tapered direction of plenum 6.
Preferably, plenum 6 is cone barrel along the length direction of header 2, sees Fig. 2
To Fig. 4.The processing of this structure is more convenient, the version selected for routine, and can
Realize preferable pressurized effect.It addition, as the embodiment of extension, plenum 6 is parallel to collection
The inwall in the cross section of flow tube 2 length direction can also be bending.
The demand according to degree of boost when actual design, plenum 6 can be by the one of header 2
Segment length is formed.As in figure 2 it is shown, for the flow path effectively extending coolant, can be two
Thermal insulation board 4 at least one thermal insulation board 4, and two headers 2 is respectively set in individual header 2
Length direction along header 2 is crisscross arranged, and is used for making coolant play when arriving header 2
Commutation effect, so can make coolant circuitous flow, thus improve heat exchange efficiency.For this
Embodiment, in order to be reliably achieved pressurized effect, for certain header 2, plenum 6 is
It is located at well between adjacent two thermal insulation board 4.It addition, plenum 6 can also be by whole afflux
Pipe 2 is formed, and coolant can be made to begin to gradually supercharging after entering header 2, avoid pressure as far as possible
The generation of power loss.
As preferably way of realization, micro-channel tubes is located at the region outside plenum 6, so
So that reduce the pressure loss when realizing supercharging as far as possible, thus more efficiently reduce coolant
Speed when each microchannel Bottomhole pressure and flux depression.
During coolant is in plenum 6 to supercharging, flow velocity can increase, and this adds increased
The impact that plenum 6 inwall is caused, thus produce bigger noise.For solving this problem,
On the basis of each embodiment above-mentioned, as further improving, such as Fig. 3 and Fig. 4, basis
The micro-channel heat exchanger of utility model also includes that noise-reducing structure 7, noise-reducing structure 7 are located at plenum 6
In, it is possible to increase the flow-disturbing that internal coolant is produced, thus reduce and plenum 6 inwall is rushed
Hit, reach the effect of noise reduction, and then making an uproar of reducing that whole micro-channel heat exchanger operationally produces
Sound.
Preferably, noise-reducing structure 7 is the protuberance being located on plenum 6 inwall.Coolant is increasing
In splenium 6 during flowing, once run into protuberance and will change flow direction, consequent disturb
Stream effect can reach the effect of noise reduction.Protuberance can take different shapes and arrangement mode,
Specific embodiment will be listed below for reference.
In a kind of version, protuberance includes at least two being located on plenum 6 inwall
Discrete projecting parts 71.This kind of embodiment can increase the effect of gaseous coolant flow-disturbing and diffusing, thus
Reduce gas shock, reduce noise.Preferably, as it is shown on figure 3, discrete projecting parts 71 is in triangle
Shape, or can also be diamond shaped as extension discrete projecting parts 71.Further, in order to reach
Preferably erasure effect, can arrange multiple rows of discrete projecting parts 71 on plenum 6 inwall, adjacent
Two row's discrete projecting parts 71 staggered, the change of such coolant flow direction is more regular, hold
Easily ensure erasure effect.
For the noise-reducing structure 7 shown in Fig. 3, discrete convex including multiple rows of summit triangle upward
Playing 71, adjacent two row's discrete projecting parts 71 are staggered, when coolant flows through first row triangle,
Passage between adjacent two trianglees flows through, when running into the triangle of next row, cold
Under the guiding of the triangle that matchmaker's flow direction faces, at this vertex of a triangle bifurcated and from
Both sides are flow through, and then one coolant every flows the most in the same manner, flows at coolant
Erasure effect is reached during path is changing.
In another kind of version, protuberance includes the convex row being located on plenum 6 inwall
Play 72.This kind of embodiment can increase the reflection probability of sound wave and the capture to sound wave, passes through sound
The dispersion of ripple, absorb, interfere and offset the decay realizing sound wave.Preferably, as shown in Figure 4,
The most protruding 72 in screw-like, and the capture mechanism of screw-like projection can ensure noise elimination effectively
Spectral performance.It addition, continuously the track of protruding 72 is it can also be provided that other shape.
It addition, this utility model additionally provides a kind of Teat pump boiler, including above-described embodiment institute
The micro-channel heat exchanger stated.Owing to micro-channel heat exchanger of the present utility model can make coolant respectively
Flow velocity and flow distribution ratio in micro-channel tubes are more uniform, so that micro-channel heat exchanger entirety is real
The now more uniform heat exchange state of ratio, thus have employed the Teat pump boiler of this kind of micro-channel heat exchanger
Water temperature ratio everywhere can be made in water tank more uniform, avoid the occurrence of the phenomenon of layering as far as possible, so may be used
To improve the work efficiency of Teat pump boiler, and improve the comfort level impression of user.Such as,
When micro-channel heat exchanger is installed according to orientation shown in Fig. 2 in Teat pump boiler, it is possible to the greatest extent
Amount avoids water temperature the phenomenon of upper lower leaf occur.
Above a kind of micro-channel heat exchanger provided by the utility model and Teat pump boiler are entered
Go and be discussed in detail.Specific embodiment used herein is to principle of the present utility model and reality
The mode of executing is set forth, and the explanation of above example is only intended to help and understands this utility model
Method and core concept.It should be pointed out that, those skilled in the art are come
Say, on the premise of without departing from this utility model principle, it is also possible to if this utility model is carried out
Dry improvement and modification, these improve and modify the protection model also falling into this utility model claim
In enclosing.
Claims (14)
1. a micro-channel heat exchanger, it is characterised in that include that plenum (6), many groups are micro-
Channel and two headers (2), being respectively arranged at the two ends with described in of the described micro-channel tubes of many groups
Header (2), at least one described header (2) is provided with described plenum (6), is used for
Increase coolant flowing pressure in described header (2).
Micro-channel heat exchanger the most according to claim 1, it is characterised in that described increasing
Splenium (6) is located at least in the described header (2) the middle and lower reaches position along coolant flow direction.
Micro-channel heat exchanger the most according to claim 1, it is characterised in that described increasing
Splenium (6) is formed by described header (2), and described plenum (6) is along described header
(2) length direction is tapered towards the flow direction of coolant.
Micro-channel heat exchanger the most according to claim 3, it is characterised in that described increasing
Splenium (6) is formed by a segment length or the whole length of described header (2).
Micro-channel heat exchanger the most according to claim 3, it is characterised in that described increasing
Splenium (6) is cone barrel along the length direction of described header (2).
Micro-channel heat exchanger the most according to claim 1, it is characterised in that described micro-
Channel is located at the region outside described plenum (6).
7. according to the arbitrary described micro-channel heat exchanger of claim 1～6, it is characterised in that
Also include that noise-reducing structure (7), described noise-reducing structure (7) are located in described plenum (6).
Micro-channel heat exchanger the most according to claim 7, it is characterised in that described in disappear
Sound structure (7) is for be located at the protuberance on described plenum (6) inwall.
Micro-channel heat exchanger the most according to claim 8, it is characterised in that described convex
Go out at least two discrete projecting parts (71) that portion includes being located on described plenum (6) inwall.
Micro-channel heat exchanger the most according to claim 9, it is characterised in that described from
Dissipate protruding (71) triangular shape.
11. micro-channel heat exchangers according to claim 9, it is characterised in that described increasing
Splenium (6) inwall is provided with multiple rows of discrete projecting parts (71), discrete projecting parts described in two adjacent rows
(71) staggered.
12. micro-channel heat exchangers according to claim 8, it is characterised in that described convex
Go out the most protruding (72) that portion includes being located on described plenum (6) inwall.
13. micro-channel heat exchangers according to claim 12, it is characterised in that described
The most protruding (72) are in screw-like.
14. 1 kinds of Teat pump boilers, it is characterised in that include the arbitrary institute of claim 1～13
The micro-channel heat exchanger stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620310392.6U CN205505502U (en) | 2016-04-13 | 2016-04-13 | Microchannel heat exchanger and heat pump water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620310392.6U CN205505502U (en) | 2016-04-13 | 2016-04-13 | Microchannel heat exchanger and heat pump water heater |
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| Publication Number | Publication Date |
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| CN205505502U true CN205505502U (en) | 2016-08-24 |
Family
ID=56712873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620310392.6U Active CN205505502U (en) | 2016-04-13 | 2016-04-13 | Microchannel heat exchanger and heat pump water heater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143445A (en) * | 2017-07-11 | 2017-09-08 | 重庆万力联兴实业(集团)有限公司 | A kind of electric fuel punp pressure regulator valve denoising device |
| CN107289678A (en) * | 2016-04-13 | 2017-10-24 | 珠海格力电器股份有限公司 | Microchannel heat exchanger and heat pump water heater |
| CN110945291A (en) * | 2016-12-22 | 2020-03-31 | 英宁科国际有限公司 | Energy distribution system, distributor of such a system and method for laying such a system |
-
2016
- 2016-04-13 CN CN201620310392.6U patent/CN205505502U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289678A (en) * | 2016-04-13 | 2017-10-24 | 珠海格力电器股份有限公司 | Microchannel heat exchanger and heat pump water heater |
| CN110945291A (en) * | 2016-12-22 | 2020-03-31 | 英宁科国际有限公司 | Energy distribution system, distributor of such a system and method for laying such a system |
| CN110945291B (en) * | 2016-12-22 | 2022-04-29 | 英宁科技有限公司 | Energy distribution system, distributor of such a system and method for laying such a system |
| CN107143445A (en) * | 2017-07-11 | 2017-09-08 | 重庆万力联兴实业(集团)有限公司 | A kind of electric fuel punp pressure regulator valve denoising device |
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