CN205300046U - Distribution of adjustment carbon dioxide refrigerant mass dryness fraction improves evaporimeter of heat transfer - Google Patents
Distribution of adjustment carbon dioxide refrigerant mass dryness fraction improves evaporimeter of heat transfer Download PDFInfo
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- CN205300046U CN205300046U CN201620015078.5U CN201620015078U CN205300046U CN 205300046 U CN205300046 U CN 205300046U CN 201620015078 U CN201620015078 U CN 201620015078U CN 205300046 U CN205300046 U CN 205300046U
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- carbon dioxide
- heat exchanger
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- mass dryness
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Abstract
The utility model discloses a distribution of adjustment carbon dioxide refrigerant mass dryness fraction improves evaporimeter of heat transfer, include shunt tubes, collecting pipe and heat exchanger, two passageways about the shunt tubes is with the journey distribution from the entrance, the shunt tubes branch pipe more than two is told by lower supreme order to every passageway, and a channel entrance is connected with each heat exchanger, and the collecting pipe distributes for controlling two passageways with the journey from the exit, and the collecting pipe branch pipe more than two is told to every passageway from top to bottom order, with each heat exchanger subchannel exit linkage. The utility model discloses change the mode that the evaporimeter average allocation got into the carbon dioxide refrigerant, carried out the mass dryness fraction distribution to the carbon dioxide refrigerant in the evaporimeter to improve the whole heat exchange efficiency of evaporimeter.
Description
Technical field
This utility model relates to a kind of vaporizer, is specifically related to a kind of vaporizer adjusting the distribution raising heat exchange of carbon dioxide coolant mass dryness fraction.
Background technology
In carbon dioxide heat pump system, being gas-liquid two-phase state during cold-producing medium entrance vaporizer, cold-producing medium is evenly distributed in each heat exchanger channels by existing vaporizer completely. But the air mass flow that each passage that vaporizer is from bottom to up participates in heat exchange is sequentially reduced, down channel carbon dioxide coolant evaporation in vaporizer so can be caused very fast, evaporating completely when also not leaving heat exchanger channels, heat exchange afterwards provides only the degree of superheat, and heat exchange efficiency is low; And the carbon dioxide coolant evaporation of upper run is relatively slow, also failing to when leaving heat exchanger channels evaporate completely, therefore vaporizer overall heat exchange is inefficient. As can be participated in the air mass flow change of heat exchange according to vaporizer each several part, the carbon dioxide coolant of different passages is carried out mass dryness fraction distribution, then can improve the overall heat exchange efficiency of vaporizer.
Summary of the invention
The purpose of this utility model, it is to solve above-mentioned prior art Problems existing, a kind of vaporizer adjusting the distribution raising heat exchange of carbon dioxide coolant mass dryness fraction being provided, carbon dioxide coolant being carried out mass dryness fraction distribution in vaporizer, thus improving the overall heat exchange efficiency of vaporizer.
The purpose of this utility model is achieved through the following technical solutions: a kind of vaporizer adjusting the distribution raising heat exchange of carbon dioxide coolant mass dryness fraction, including isocon, collecting pipe and heat exchanger, isocon is assigned as two passages in left and right from porch with journey, each passage order from the bottom to top separates plural isocon arm, it is connected with each heat exchanger subchannel entrance, collecting pipe is assigned as two passages in left and right from exit with journey, each passage order from top to bottom separates plural collecting pipe arm, is connected with the outlet of each heat exchanger subchannel.
After carbon dioxide coolant enters isocon, first it is evenly distributed to two passages in left and right, distribute from the bottom to top again to each isocon arm, enter back into each heat exchanger subchannel entrance, pass through gravity factor, the mass dryness fraction of the carbon dioxide of each isocon arm distribution raises from the bottom to top successively, and density then reduces successively, and mass flow amount also reduces successively.
The carbon dioxide coolant of different mass dryness fractions enters each heat exchanger subchannel, heat exchange is carried out with air, the carbon dioxide coolant that wherein mass dryness fraction is higher concentrates on subchannel, top, its mass flow amount is little, evaporation needs heat less, and the carbon dioxide coolant mass dryness fraction in subchannel, lower section is relatively low, and its mass flow amount is big, evaporation needs heat relatively big, participates in, with heat exchanger subchannel, the practical situation that the air mass flow of heat exchange is sequentially reduced from top to bottom and matches.
Carbon dioxide coolant after heat exchange evaporation, respectively enters collecting pipe left and right passage from the outlet of each subchannel in each heat exchanger subchannel, is finally pooled to collecting pipe outlet again.
Accompanying drawing explanation
Fig. 1 is front schematic view of the present utility model,
Fig. 2 is side schematic view of the present utility model.
In figure, each label represents successively: 1-isocon, 2-collecting pipe, 3-heat exchanger, 4-isocon arm, 5-collecting pipe arm, 6-heat exchanger subchannel.
Detailed description of the invention
This utility model is described further with specific embodiment below in conjunction with accompanying drawing 1, accompanying drawing 2.
As it is shown in figure 1, a kind of vaporizer adjusting the distribution raising heat exchange of carbon dioxide coolant mass dryness fraction, including isocon 1, collecting pipe 2, heat exchanger 3. Isocon 1 is assigned as two passages in left and right from porch with journey, each passage order from the bottom to top separates plural isocon arm 4, it is connected with each heat exchanger subchannel 6 entrance, collecting pipe 2 is assigned as two passages in left and right from exit with journey, each passage order from top to bottom separates plural collecting pipe arm 5, is connected with the outlet of each heat exchanger subchannel 6.
When the vaporizer that the distribution of this adjustment carbon dioxide coolant mass dryness fraction improves heat exchange accesses refrigeration or heating, after carbon dioxide coolant enters isocon 1, first it is evenly distributed to two passages in left and right, distribute from the bottom to top again to each arm, enter back into each heat exchanger subchannel 6 entrance, and because of gravity, the mass dryness fraction of the carbon dioxide of each arm distribution raises from the bottom to top successively, density then reduces successively, and mass flow amount also reduces successively.
The carbon dioxide coolant of different mass dryness fractions enters each heat exchanger subchannel 6, heat exchange is carried out with air, the carbon dioxide coolant that wherein mass dryness fraction is higher concentrates on subchannel, top, its mass flow amount is little, evaporation needs heat less, and the carbon dioxide coolant mass dryness fraction in subchannel, lower section is relatively low, and its mass flow amount is big, evaporation needs heat relatively big, participates in, with heat exchanger subchannel 6, the practical situation that the air mass flow of heat exchange is sequentially reduced from top to bottom and matches.
Carbon dioxide coolant after heat exchange evaporation, respectively enters collecting pipe about 2 passage from the outlet of each subchannel, is finally pooled to collecting pipe 2 again and exports in each heat exchanger subchannel 6, enters refrigeration or other parts of heating via collecting pipe 2 outlet.
Claims (4)
1. the vaporizer adjusting the distribution raising heat exchange of carbon dioxide coolant mass dryness fraction, it is characterized in that, including isocon (1), collecting pipe (2) and heat exchanger (3), described isocon (1) is assigned as two passages in left and right from porch with journey, each passage order from the bottom to top separates plural isocon arm (4), is connected with each heat exchanger subchannel (6) entrance; Described collecting pipe (2) is assigned as two passages in left and right from exit with journey, and each passage order from top to bottom separates plural collecting pipe arm (5), is connected with the outlet of each heat exchanger subchannel (6).
2. adjustment carbon dioxide coolant mass dryness fraction according to claim 1 distribution improves the vaporizer of heat exchange, it is characterized in that, after carbon dioxide coolant enters isocon (1), first it is evenly distributed to two passages in left and right, then distributes from the bottom to top to each isocon arm (4), enter back into each heat exchanger subchannel (6) entrance, pass through gravity factor, the mass dryness fraction of the carbon dioxide that each isocon arm (4) is distributed raises from the bottom to top successively, and density then reduces successively, and mass flow amount also reduces successively.
3. adjustment carbon dioxide coolant mass dryness fraction according to claim 2 distribution improves the vaporizer of heat exchange, it is characterized in that, the carbon dioxide coolant of different mass dryness fractions enters each heat exchanger subchannel (6), heat exchange is carried out with air, the carbon dioxide coolant that wherein mass dryness fraction is higher concentrates on each heat exchanger subchannel, top, its mass flow amount is little, evaporation needs heat less, carbon dioxide coolant mass dryness fraction in subchannel, lower section is relatively low, its mass flow amount is big, evaporation needs heat bigger, participate in, with heat exchanger subchannel (6), the practical situation that the air mass flow of heat exchange is sequentially reduced from top to bottom to match.
4. adjustment carbon dioxide coolant mass dryness fraction according to claim 3 distribution improves the vaporizer of heat exchange, it is characterized in that, carbon dioxide coolant in each heat exchanger subchannel (6) heat exchange evaporation after, respectively enter collecting pipe (2) left and right passage from the outlet of each heat exchanger subchannel, be finally pooled to collecting pipe (2) outlet again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620015078.5U CN205300046U (en) | 2016-01-08 | 2016-01-08 | Distribution of adjustment carbon dioxide refrigerant mass dryness fraction improves evaporimeter of heat transfer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620015078.5U CN205300046U (en) | 2016-01-08 | 2016-01-08 | Distribution of adjustment carbon dioxide refrigerant mass dryness fraction improves evaporimeter of heat transfer |
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| CN205300046U true CN205300046U (en) | 2016-06-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111546852A (en) * | 2020-04-30 | 2020-08-18 | 西安交通大学 | Transcritical carbon dioxide electric vehicle thermal management system and control method thereof |
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2016
- 2016-01-08 CN CN201620015078.5U patent/CN205300046U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111546852A (en) * | 2020-04-30 | 2020-08-18 | 西安交通大学 | Transcritical carbon dioxide electric vehicle thermal management system and control method thereof |
| CN111546852B (en) * | 2020-04-30 | 2021-07-13 | 西安交通大学 | Transcritical carbon dioxide electric vehicle thermal management system and control method thereof |
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