CN108507233A - A kind of heat-exchange system - Google Patents
A kind of heat-exchange system Download PDFInfo
- Publication number
- CN108507233A CN108507233A CN201710847443.8A CN201710847443A CN108507233A CN 108507233 A CN108507233 A CN 108507233A CN 201710847443 A CN201710847443 A CN 201710847443A CN 108507233 A CN108507233 A CN 108507233A
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- Prior art keywords
- air
- heat exchanger
- heat
- flow
- exchange system
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
Abstract
This application provides a kind of heat-exchange system, which includes air duct, is arranged in the air duct：First Heat Exchanger and the second heat exchanger, wherein the second heat exchanger, which is arranged between the downstream of First Heat Exchanger, First Heat Exchanger and the second heat exchanger, is equipped with air-flow Mixed Zone；The first air-flow and the second air-flow can be flowed through in air duct, the first air-flow enters the air-flow Mixed Zone after flowing through the First Heat Exchanger, and is mixed with second air-flow for entering the air-flow Mixed Zone, is then flowed out using second heat exchanger.The heat-exchange system of the application, in the case where heat exchange amount can be kept substantially, can generate smaller air flow resistance in certain bypass proportional region.
Description
Technical field
This application involves a kind of heat-exchange systems, in particular for air-conditioning, refrigeration or the heat-exchange system for freezing field.
Background technology
In existing air-conditioner set, generally the finned tube exchanger being made of copper pipe and fin is arranged in air duct, is led to
Crossing wind turbine makes air flow, and realizes the heat exchange of air and finned tube exchanger.
In finned tube exchanger designs application process, in order to improve the heat exchange efficiency of air-conditioner set, it can generally pass through increasing
The number of rows of finned tube exchanger is added to improve heat exchange amount.But with the increase of number of rows, air flow resistance can linearly increase,
The increased ratio of heat exchange amount is reduced as number of rows increases.In the optimization process of the design of heat-exchange system, it need to consider to increase and change
Heat simultaneously reduces air flow resistance.
Invention content
In order to increase heat exchange amount and reduce air flow resistance, the application provides a kind of heat-exchange system, the heat-exchange system
Including air duct, it is arranged in the air duct：
First Heat Exchanger；
Second heat exchanger；
Second heat exchanger is arranged in the downstream of the First Heat Exchanger, the First Heat Exchanger and second heat exchange
Air-flow Mixed Zone is equipped between device；
The first air-flow and the second air-flow can be flowed through in the air duct,
First air-flow, which can flow through, enters the air-flow Mixed Zone after the First Heat Exchanger, and with into institute
Second air-flow mixing for stating air-flow Mixed Zone, then flows out using second heat exchanger.
Heat-exchange system as described above, the heat-exchange system include air port, and the air port connects with the air-flow Mixed Zone
Logical, second air-flow enters air-flow Mixed Zone by air port and is flowed out using second heat exchanger.
Heat-exchange system as described above, the First Heat Exchanger and second heat exchanger are close with the inner wall in air duct respectively
Fitting, the air port is arranged on the wall in the air duct at the air-flow Mixed Zone, to make second air-flow from air port into
Enter air-flow Mixed Zone to flow out using second heat exchanger.
Heat-exchange system as described above is provided with gap to form wind between the First Heat Exchanger and the inner wall in air duct
Mouthful, the inner wall in the second heat exchanger and air duct fits closely, to make the second air-flow from air port enter air-flow Mixed Zone using
The second heat exchanger outflow.
Heat-exchange system as described above is provided with mixing arrangement in the air-flow Mixed Zone, for that will enter the gas
Flow the first air-flow in Mixed Zone and the mixing of the second air-flow.
Heat-exchange system as described above, the mixing arrangement are porous plate.
Heat-exchange system as described above, the air quantity of second air-flow account for the ranging from 0%- of the ratio of the air quantity of total air flow
40%.
Heat-exchange system as described above, the First Heat Exchanger and second heat exchanger are tabular, and parallel
Ground is arranged in air duct.
Heat-exchange system as described above, one in the First Heat Exchanger and second heat exchanger is V-type, another
For tabular.
Heat-exchange system as described above is provided with wind turbine simultaneously in the upstream in the First Heat Exchanger and the air port.
Heat-exchange system as described above is provided with wind turbine in the downstream of second heat exchanger.
There are two heat exchangers for heat-exchange system tool in the application, and air-flow mixed zone is provided between two heat exchangers
Domain, air-flow Mixed Zone are equipped with bypass, portion of air are made to be directly entered air-flow Mixed Zone and the second heat exchanger by bypassing
Heat exchange is carried out, compared with the identical finned tube exchanger of total number of rows, the front and back arrangement of two independent finned tube exchangers,
, in the case where heat exchange amount can be kept substantially, smaller air flow resistance can be generated in certain bypass proportional region.
Description of the drawings
These and other features and advantages of the present invention can read following detailed description by referring to accompanying drawing and obtain preferably
Understand, throughout the drawings, identical reference numeral indicates identical component, wherein：
Fig. 1 is the schematic diagram of the first embodiment of the heat-exchange system of the application；
Fig. 2 is the schematic diagram of the second embodiment of the heat-exchange system of the application；
Fig. 3 is the schematic diagram of the 3rd embodiment of the heat-exchange system of the application；
Fig. 4 is the schematic diagram of the fourth embodiment of the heat-exchange system of the application；
Fig. 5 is the schematic diagram of the 5th embodiment of the heat-exchange system of the application；
Fig. 6 is the schematic diagram of the sixth embodiment of the heat-exchange system of the application；
Fig. 7 is the schematic diagram of the 7th embodiment of the heat-exchange system of the application.
Specific implementation mode
The various specific implementation modes of the present invention are described below with reference to the attached drawing for constituting this specification part.
Although it should be understood that be used in the present invention indicate direction term, such as "front", "rear", "upper", "lower", " left side ",
" right side ", etc. the description present invention of directions or directionality various example features and element, but use these terms herein
Purpose merely for convenience of description, the determination based on the example orientations shown in attached drawing.Due to reality disclosed in this invention
Applying example can be arranged according to different directions, so these indicate that the term in direction is intended only as illustrating and should not be considered as limiting
System.In the following figures, same parts use same drawing number, similar parts to use similar drawing number,
To avoid repeated description.
Fig. 1 is the schematic diagram of the first embodiment of the heat-exchange system of the application, and referring to Fig. 1, heat-exchange system 100 has air duct
110, First Heat Exchanger 102 and the second heat exchanger 104 are provided in air duct 110, the setting of the second heat exchanger 104 is changed described first
The downstream of hot device 102 is equipped with air-flow Mixed Zone 107 between First Heat Exchanger 102 and the second heat exchanger 104.Air-flow mixed zone
The outer wall in domain 107 is equipped with a pair of of air port (105.1,105.2).It should be noted that the quantity in air port can also be one or
Person is more than two, within the scope of protection of this application.
In the present embodiment, the sectional area of the everywhere in air duct 110 is equal, First Heat Exchanger 102 and the second heat exchanger 104
For finned tube exchanger, the surrounding of First Heat Exchanger 102 and the second heat exchanger 104 is tightly attached on the inner wall in air duct 110, and
It is vertical with air duct 110.First Heat Exchanger 102 and the second heat exchanger 104 include that several fins and several heat exchanger tubes, heat exchanger tube are worn
Several fins are crossed, fin is used for the heat transfer of reinforced pipe.104 usual generally rectangle of First Heat Exchanger 102 and the second heat exchanger
Tabular, there are gaps between each two adjacent fin, and the air-flow for flowing through air duct can be from clearance flow between adjacent fin
It crosses, and exchanges heat with fin and heat exchanger tube.
In Fig. 1, into air duct 110 before air-flow be divided into the first air-flow 121 and the second air-flow 122, the first air-flow 121
Enter air-flow Mixed Zone 107 directly through the First Heat Exchanger 102, the second air-flow 122 passes through air port (105.1,105.2)
Into air-flow Mixed Zone 107.In air-flow Mixed Zone 107, the first air-flow 121 and the mixing of the second air-flow 122 then mix
Air-flow afterwards is flowed out by second heat exchanger 104.That is First Heat Exchanger 102 only changes the first air-flow 121
Heat, the second heat exchanger carry out again the mixed airflow of the first air-flow 121 and the second air-flow 122 that exchange heat through First Heat Exchanger
Heat exchange.
The wind turbine (not shown) that flows through of air-flow realizes that wind turbine could be provided as one or more in air duct,
In one embodiment, there are two wind turbines, is separately positioned on the upstream of First Heat Exchanger 102 and air port 105.In another embodiment
Downstream of the middle wind turbine setting in the second heat exchanger (104).In third embodiment, wind turbine is arranged in 102 He of First Heat Exchanger
The common upstream in air port 105.
The air quantity ratio that the air quantity of second air-flow 122 accounts for the total air-flow for flowing through air duct 110 is known as bypass ratio, the side
Logical ratio can be controlled according to design requirement, in one embodiment, the upstream of First Heat Exchanger 102 and air port (105.1,
105.2) it is provided with connecting pipe (not shown) between, adjustable valve is set on pipeline, side is controlled by regulating valve
Logical ratio.It should be noted that regulating valve can also be arranged at air port (105.1,105.2) or at entrance.Separately
Outside, by-pass ratio can also be adjusted by adjusting thickness and shape, the size and shape of air port (105.1,105.2) of pipeline
Example.Or when the upstream of First Heat Exchanger 102 and air port 105 is equipped with wind turbine, can by adjust the air quantity of each wind turbine come
Adjust bypass ratio.
In finned tube exchanger designs application process, in order to improve the heat exchange efficiency of air-conditioner set, it can generally pass through increasing
The number of rows of finned tube exchanger is added to improve heat exchange amount.But can linearly it increase with the increase air circulation resistance of number of rows, meeting
The energy consumption of increase system, and the air side coefficient of heat transfer with number of rows increase and reduces, thus the increased ratio of heat exchange amount with
Number of rows increases and reduces.Technical solution in the application improves this problem at least partly.
In the embodiment shown in fig. 1, the heat exchange amount Q1 of the air-flow of First Heat Exchanger 102, gas-flow resistance dp1 are flowed through；
The heat exchange amount Q2 of the air-flow of the second heat exchanger 102, gas-flow resistance dp2 are flowed through, for the heat-exchange system of the present embodiment, always
Heat exchange amount is the sum of Q1 and Q2, and total resistance is the sum of dp1 and dp2.When use and First Heat Exchanger 102 and the second heat exchanger
When the identical heat exchanger of 104 total number of rows, the heat exchange amount for flowing through the air-flow of the heat exchanger is Q, flows through the gas of the heat exchanger
Flow resistance power is dp, in certain bypass proportional region, in Q1 with the sum of Q2 is basically unchanged compared with Q or slightly reduces the case where
Under, dp1 is substantially reduced with the sum of dp2 compared with dp.It is 0 (i.e. no side in bypass ratio referring to the experimental data in the following table 1
It is logical) in the case of, the sum of Q1 and Q2 are more than Q, and air-flow, being capable of certain journey after the heat exchange of First Heat Exchanger and the second heat exchanger
The heat exchange amount of heat-exchange system is improved on degree, but gas-flow resistance can also be increased.And under certain heat exchange amount demand, it is changed at two
After air-flow Mixed Zone is arranged between hot device, in the bypass proportional region of 0%-40% (the case where not including 0), with by-pass ratio
The case where example is 0 is compared, the amplitude very little that Q1 declines with the sum of Q2 compared with Q, but dp1 is obviously dropped with the sum of dp2 compared with dp
It is low, can be in the case where heat exchange function to be by smaller influence, realization is energy saving, such as when bypass ratio 40%, (Q1+Q2)/Q is
96%, and (dp1+dp2)/dp is only 74%.
Table 1
| Bypass ratio | 0% | 20% | 40% | 60% | 80% | 100% |
| (Q1+Q2)/Q | 103.1% | 99.8% | 96.0% | 91.4% | 86.1% | 80.7% |
| (dp1+dp2)/dp | 101.4% | 86.7% | 74.2% | 64.2% | 56.9% | 51.8% |
It is that may be implemented while influencing smaller to total heat exchange amount, to reduce in the section of 0%-40% in bypass ratio
Total air flow resistance is realized energy saving.
Fig. 2 is the second embodiment of the application, similar with heat-exchange system shown in Fig. 1 100, the difference is that, Fig. 1
Shown in 100 First Heat Exchanger 102 of heat-exchange system and the second heat exchanger 104 it is vertical with air duct 110, and it is shown in Fig. 2
The First Heat Exchanger 202 of heat-exchange system 200 and the second heat exchanger 204 are obliquely placed in air duct 110, and are in one with air duct 110
Fixed angle changes therewith to the shape of air-flow Mixed Zone 207.Embodiment shown in Fig. 2 can equally reach in Fig. 1
Shown in embodiment technique effect.
Fig. 3 is the 3rd embodiment of the application, similar with heat-exchange system shown in Fig. 1 100, the difference is that, Fig. 1
Shown in 100 First Heat Exchanger 102 of heat-exchange system and the second heat exchanger 104 be plate type heat exchanger, and shown in Fig. 3 change
100 First Heat Exchanger 302 of hot systems is V-type heat exchanger, and the second heat exchanger 104 is plate type heat exchanger, and wherein the first of V-type is changed
Hot device 302 can be spliced into V-type by two smaller heat exchangers of height, be sent out therewith to the shape of air-flow Mixed Zone 307
It is raw to change.Embodiment shown in Fig. 3 can equally reach the technique effect of embodiment shown in Fig. 1.
Fig. 4 is the fourth embodiment of the application, similar with heat-exchange system shown in Fig. 1 100, the difference is that,
In heat-exchange system 400 as shown in Figure 4, air port is no longer set on the wind path wall at air-flow Mixed Zone 407, and First Heat Exchanger
402 sectional area is less than the sectional area in air duct 110, to make that there is gap 431 between First Heat Exchanger 402 and air duct 110, from
And air port (405.1,405.2) is formed, the second air-flow 122 can enter air-flow Mixed Zone from air port (405.1,405.2)
407.Embodiment shown in Fig. 4 can equally reach the technique effect of embodiment shown in Fig. 1.
Fig. 5 is the 5th embodiment of the application, similar with heat-exchange system shown in Fig. 1 100, the difference is that,
In heat-exchange system 500 as shown in Figure 5, air port is no longer set, air duct 510, which is divided, is on the wind path wall at air-flow Mixed Zone 507
First segment 541 and second segment 542, wherein the sectional area of everywhere is equal in second segment 542, and the sectional area of first segment 541 from
Upstream constantly increase with the junction of second segment 542.First Heat Exchanger 502 is arranged in first segment 541, the second heat exchanger
504 are arranged in second segment 542, to have gap 531 between First Heat Exchanger 502 and air duct 510, to form air port
(505.1,505.2), the second air-flow 122 can enter air-flow Mixed Zone 507 from air port (505.1,505.2).It is shown in fig. 5
Embodiment can equally reach the technique effect of embodiment shown in Fig. 1.
Fig. 6 is the sixth embodiment of the application, similar with heat-exchange system shown in Fig. 1 100, the difference is that,
In heat-exchange system 600 as shown in FIG. 6, air port is no longer set, air duct 610, which is divided, is on the wind path wall at air-flow Mixed Zone 607
First segment 641 and second segment 642, wherein the sectional area of everywhere is equal in first segment 641, and everywhere cuts in second segment 642
Area equation, but the sectional area of first segment 641 is more than the sectional area of second segment 642, makes the company of first segment 641 and second segment 642
It is stepped to meet place.First Heat Exchanger 602 is arranged in first segment 641, and the second heat exchanger 604 is arranged in second segment 642, from
And there is gap 631 between First Heat Exchanger 602 and air duct 610, to form air port (605.1,605.2), the second air-flow 122
Air-flow Mixed Zone 607 can be entered from air port (605.1,605.2).Embodiment shown in fig. 6 can equally reach shown in Fig. 1
Embodiment technique effect.
Fig. 7 is the 7th embodiment of the application, similar with heat-exchange system shown in Fig. 1 100, the difference is that,
In heat-exchange system 700 as shown in Figure 7, air-flow Mixed Zone 707 is provided with mixing arrangement 750, which is more
Orifice plate.Mixing arrangement 750 the first air-flow 121 can be made to flow through First Heat Exchanger 702 after air-flow and the second air-flow 122 preferably
Mixing can suitably reduce air-flow blending space 707, can also reach same technology using mixing arrangement 750
Effect.
Although being only shown and described herein to some features of the present invention, those skilled in the art are come
A variety of improvement and variation can be carried out by saying.It is therefore to be understood that the attached claims, which are intended to covering, falls with the present invention in fact
Above-mentioned improvement in matter scope and variation.
Claims (11)
1. a kind of heat-exchange system (100), which is characterized in that the heat-exchange system (100) includes air duct (110), the air duct
(110) setting in：
First Heat Exchanger (102)；
Second heat exchanger (104)；
Second heat exchanger (104) setting in the downstream of the First Heat Exchanger (102), the First Heat Exchanger (102) and
It is equipped with air-flow Mixed Zone (107) between second heat exchanger (104)；
The first air-flow (121) and the second air-flow (122) can be flowed through in the air duct (110),
First air-flow (121) enters the air-flow Mixed Zone after capable of flowing through the First Heat Exchanger (102)
(107), it and with second air-flow (122) for entering the air-flow Mixed Zone (107) mixes, then using described second
Heat exchanger (104) flows out.
2. heat-exchange system (100) as described in claim 1, which is characterized in that
The heat-exchange system includes air port (105), and the air port (105) is connected to the air-flow Mixed Zone (107), and described
Two air-flows (122) are flowed out into air-flow Mixed Zone (107) using second heat exchanger (104) by air port (105).
3. heat-exchange system (100) as claimed in claim 2, which is characterized in that the First Heat Exchanger (102) and described second
Inner wall of the heat exchanger (104) respectively with air duct (107) fits closely, and the air port (105) is arranged in the air-flow Mixed Zone
(107) on the wall in the air duct at, to make second air-flow (122) enter air-flow Mixed Zone (107) again from air port (105)
It is flowed out by second heat exchanger (104).
4. heat-exchange system (100) as claimed in claim 2, which is characterized in that the First Heat Exchanger (402) is interior with air duct
Gap (431) is provided between wall to form air port (405), the second heat exchanger (404) and the inner wall in air duct fit closely, from
And the second air-flow (122) is made to be flowed using second heat exchanger (404) from air port (405) into air-flow Mixed Zone (407)
Go out.
5. heat-exchange system (100) as described in claim 1, which is characterized in that be provided in the air-flow Mixed Zone (707)
Mixing arrangement (750), for the first air-flow (121) in the air-flow Mixed Zone (707) and the second air-flow (122) will to be entered
Mixing.
6. heat-exchange system (100) as claimed in claim 5, which is characterized in that the mixing arrangement (750) is porous plate.
7. heat-exchange system (100) as described in claim 1, which is characterized in that the air quantity of second air-flow (122) accounts for total gas
The ranging from 0%-40% of the ratio of the air quantity of stream.
8. heat-exchange system (100) as described in claim 1, which is characterized in that
The First Heat Exchanger (102) and second heat exchanger (104) are tabular, and are set in parallel in air duct
(110) in.
9. heat-exchange system (100) as described in claim 1, which is characterized in that the First Heat Exchanger (102) and described second
One in heat exchanger (104) is V-type, another is tabular.
10. heat-exchange system (100) as claimed in claim 2, which is characterized in that in the First Heat Exchanger (102) and described
The upstream in air port (105) is provided with wind turbine simultaneously.
11. heat-exchange system (100) as described in claim 1, which is characterized in that in the downstream of second heat exchanger (104)
It is provided with wind turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710847443.8A CN108507233B (en) | 2017-09-19 | 2017-09-19 | Heat exchange system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710847443.8A CN108507233B (en) | 2017-09-19 | 2017-09-19 | Heat exchange system |
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| CN108507233A true CN108507233A (en) | 2018-09-07 |
| CN108507233B CN108507233B (en) | 2023-09-29 |
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| CN201710847443.8A Active CN108507233B (en) | 2017-09-19 | 2017-09-19 | Heat exchange system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113757846A (en) * | 2021-08-24 | 2021-12-07 | 华为数字能源技术有限公司 | Composite refrigeration system and data center |
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| CN109405352A (en) * | 2018-12-29 | 2019-03-01 | 天津泓雅节能科技有限责任公司 | A kind of Air-Cooled Heat Pump Unit with new gas heat exchanger |
| CN213811000U (en) * | 2020-12-24 | 2021-07-27 | 南京御风环境技术有限公司 | Novel microwave sterilization device of fresh air handling unit |
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| US5826641A (en) * | 1994-10-27 | 1998-10-27 | Aaon, Inc. | Air conditioner with heat wheel |
| JP3114447U (en) * | 2004-07-06 | 2005-10-27 | 広州市華徳工業有限公司 | Total heat recovery cold water unit |
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| CN113757846A (en) * | 2021-08-24 | 2021-12-07 | 华为数字能源技术有限公司 | Composite refrigeration system and data center |
| EP4142447A1 (en) * | 2021-08-24 | 2023-03-01 | Huawei Digital Power Technologies Co., Ltd. | Composite cooling system and data center |
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| Publication number | Publication date |
|---|---|
| CN108507233B (en) | 2023-09-29 |
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