CN102141326A - Micro-channel parallel flow evaporator - Google Patents
Micro-channel parallel flow evaporator Download PDFInfo
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- CN102141326A CN102141326A CN201110109967XA CN201110109967A CN102141326A CN 102141326 A CN102141326 A CN 102141326A CN 201110109967X A CN201110109967X A CN 201110109967XA CN 201110109967 A CN201110109967 A CN 201110109967A CN 102141326 A CN102141326 A CN 102141326A
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- distributing pipe
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Abstract
The invention discloses a micro-channel parallel flow evaporator, which relates to the technical field of air conditioning systems. The micro-channel parallel flow evaporator comprises an upper liquid collection tube component, a plurality of flat tubes arrayed uniformly, two end covers and a lower liquid collection tube, wherein two end surfaces of the upper liquid collection tube component are connected with the two end covers respectively, and two ends of each flat tube are connected with the bottom of the upper liquid collection tube component and the lower liquid collection tube respectively. By the invention, the uniform flowing of a refrigerant into each flat tube is guaranteed, the refrigerating capability and the air outlet temperature distribution uniformity of the evaporator are improved, the efficiency is improved, and the comfortableness is also improved.
Description
Technical field
What the present invention relates to is a kind of device of air-conditioning system technical field, specifically is a kind of micro-channel parallel flow evaporimeter.
Background technology
China has developed into the consumption market and the first producing country of world's second largest refrigeration air-conditioner now, and refrigerating and air conditioning industry has become the important component part of Chinese national economy.But, make a general survey of the global economic and social development present situation, current refrigerating and air conditioning industry is facing great challenge and pressure aspect the energy-saving and environmental protection two.Heat exchanger is the vitals in the refrigerated air-conditioning system, and refrigerated air-conditioning system four big parts are compressor, expansion valve, condenser and evaporimeter, and two big parts wherein are heat exchangers.Therefore, the performance of heat exchanger to the efficiency of whole refrigerated air-conditioning system when environmental-protecting performance material impact is arranged.Micro-channel parallel flow heat exchanger is the international new trend of heat exchanger development in the air conditioner industry, specifically, is compared to the heat exchanger of other patterns, and micro-channel parallel flow heat exchanger has following remarkable advantages and advance:
1. high efficiency: because micro-channel heat exchanger higher heat transfer performance and traditional fin-tube type heat exchanger are compared, its heat transfer coefficient is significantly improved, and its heat transfer efficiency has on average improved more than 30%.Working 10 hours every day with domestic air conditioning is example, each air-conditioning 3-5 degree/sky that can economize on electricity.
2. volume is little, and is in light weight: because the characteristics of high efficiency of micro-channel heat exchanger, its appearance and size and weight are all little than fin-tube type heat exchanger.
3. refrigerant charge is few: because the internal volume of micro-channel tubes will be much smaller than fin-tube type heat exchanger, so refrigerant charge also can reduce, also be like this even need to increase under the situation of liquid reservoir in system.Studies show that when adopting micro-channel heat exchanger as condenser, the charging amount of cold-producing medium on average will reduce 30%.
4. cost advantage is obvious: owing to price variance huge between copper material and the aluminium and the difference on the weight, micro-channel heat exchanger is compared fin-tube type heat exchanger huge price advantage.With Φ 9.52 copper pipes is example, and its variable cost is than fin-tube type low 30%.
5. be fit to large-scale production: the structures shape of micro-channel heat exchanger this product be suitable for large-scale production, by determining a series of different hole counts and the standard flat of pipe size, be easy to micro-channel heat exchanger is carried out standardization and modularization, thereby can satisfy the different demands of client by adjusting flat tube quantity for the heat exchange amount.
Though micro-channel parallel flow heat exchanger has above advantage, in application as evaporimeter, the difficult control of the uniformity that the two phase refrigerant flow distributes, this is one of subject matter that limits its large-scale promotion use.All big enterprises have carried out a large amount of research aspect the flow distribution of refrigerant control technology at present, have applied for a large amount of patents.
Find through retrieval the prior art document, following patent has all proposed protection to separately assignment of traffic control technology, patent publication No. is: WO2004059235, denomination of invention is " evaporimeter ", patent publication No. is: WO2007063100, denomination of invention is " a heat exchanger collector tube; evaporator using for air collector tube particularly ", patent publication No. is: US20050274506, denomination of invention is " adopting the flat-tube evaporator of strengthening the cold-producing medium flowage structure ", patent publication No. is: EP2108909, denomination of invention is " carrying the heat exchanger of interface ", patent publication No. is: EP1070929, denomination of invention is " an automotive air-conditioning system evaporimeter ", patent publication No. is: EP1065453, denomination of invention is " evaporimeter of band cold-producing medium distribution structure ", patent publication No. is: EP855567, denomination of invention is " a heat pump evaporator/condenser ", micro-channel evaporator assignment of traffic control technology roughly can be divided three classes at present: first kind main feature is radially to insert band throttle orifice dividing plate along collector tube to distribute with control collector tube internal pressure, and the second class main feature is at collector tube band throttle orifice flat board to be set axially; The 3rd class main feature is to carry out pressure by demarcation strip flowing hole before and after the collector tube to regulate.But find by analyzing, the first kind easily produces negative pressuren zone in the collector tube porch, cause former flat tube back flow of refrigerant, second class formation is too complicated, the adjusting parameter is too much, caused increasing a large amount of experiments and sunykatuib analysis workload, the 3rd class is inapplicable on single micro-channel parallel flow evaporimeter.
Summary of the invention
The present invention is directed to the prior art above shortcomings, a kind of micro-channel parallel flow evaporimeter is provided, this device has guaranteed that cold-producing medium flows into each root flat tube uniformly, has improved the refrigerating capacity and the leaving air temp distributing homogeneity of evaporimeter, has improved comfortableness when raising the efficiency.
The present invention is achieved by the following technical solutions, the present invention includes: go up collector tube assembly, some evenly distributed flat tubes, two end caps and following collector tube, wherein: two end faces going up the collector tube assembly are connected with two end caps respectively, and the two ends of every flat tube are connected with following collector tube with the bottom of last collector tube assembly respectively.
The described collector tube assembly of going up comprises: cold-producing medium distributing pipe and last collector tube mainboard, wherein: the cold-producing medium distributing pipe is connected with last collector tube mainboard, the top of cold-producing medium distributing pipe with in have the device of cold-producing medium to be connected, the bottom of cold-producing medium distributing pipe is connected with an end of every flat tube respectively.
Described cold-producing medium distributing pipe is cylindrical, external diameter 8～16mm, and the bottom of this cold-producing medium distributing pipe is provided with runs through punching hole.
The described punching hole that runs through is circle or quadrangle, and this hydraulic diameter that runs through punching hole is 0.3～0.8 times a cold-producing medium distributing pipe external diameter, and this runs through the punching hole spacing distance is 0.5～1.5 times cold-producing medium distributing pipe external diameter.
Described upward collector tube mainboard is a rectangle, and last collector tube mainboard is provided with jack, and the size of jack and the size of micro-channel flat are suitable.
Be provided with several equally distributed microchannels in the described flat tube, flat tube is provided with fin.
After automotive air-conditioning system starts, enter the collector tube assembly of going up of the present invention through the gas-liquid two-phase cold-producing medium behind the expansion valve, flow into each root flat tube equably by punching hole, flowing therein absorbs airborne heat, reaches the effect of refrigeration.Because cold-producing medium inflow evaporator caliber does not change, there is not the second throttle effect, can not produce negative pressuren zone in the porch, the pressure loss is less simultaneously, whole collector tube internal pressure gradient ratio is less, it is comparatively even that pressure field distributes, the two-phase fluid gas-liquid mixed is even, produced the effect that two phase refrigerant evenly flows into each root flat tube.
The collector tube assembly of going up of the present invention is welded by cold-producing medium distributing pipe and last collector tube mainboard, bottom at the cold-producing medium distributing pipe stamps out aperture, constitute the flow distribution of refrigerant control structure, this design can reach the collector tube internal pressure and be evenly distributed, two phase refrigerant gas-liquid mixed effect of uniform, thereby guaranteed that cold-producing medium flows into each root flat tube equably, improved the refrigerating capacity and the leaving air temp distributing homogeneity of evaporimeter, when raising the efficiency, improved comfortableness.
Description of drawings
Fig. 1 is embodiment 1 structural representation.
Fig. 2 is the structural representation of embodiment 1 cold-producing medium distributing pipe.
Fig. 3 is the structural representation of collector tube mainboard on the embodiment 1.
Fig. 4 is the structural representation of embodiment 1 flat tube and fin.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
As shown in Figure 1, present embodiment comprises: go up collector tube assembly 1, some evenly distributed flat tubes 2, two end caps 3 and following collector tubes 4, wherein: two end faces going up collector tube assembly 1 are connected with two end caps 3 respectively, the top of last collector tube assembly 1 with in have the device of cold-producing medium to be connected, the two ends of every flat tube 2 are connected with following collector tube 4 with the bottom of last collector tube assembly 1 respectively.
The described collector tube assembly 1 of going up comprises: cold-producing medium distributing pipe 6 and last collector tube mainboard 7, wherein: cold-producing medium distributing pipe 6 is connected with last collector tube mainboard 7, the top of cold-producing medium distributing pipe 6 with in have the device of cold-producing medium to be connected, the bottom of cold-producing medium distributing pipe 6 is connected with an end of every flat tube 2 respectively.
As shown in Figure 2, described cold-producing medium distributing pipe 6 is cylindrical, external diameter 8～16mm, and the bottom of this cold-producing medium distributing pipe 6 is provided with runs through punching hole 8.
The described punching hole 8 of running through is circle or quadrangle, and this hydraulic diameter that runs through punching hole 8 is 0.3～0.8 times cold-producing medium distributing pipe 6 external diameters, and this runs through punching hole 8 spacing distances is 0.5～1.5 times cold-producing medium distributing pipe 6 external diameters.
As shown in Figure 3, described upward collector tube mainboard 7 is a rectangle, and last collector tube mainboard 7 is provided with jack 9, and the size of the size of jack 9 and micro-channel flat 2 is suitable.
As shown in Figure 4, be provided with several equally distributed microchannels 10 in the described flat tube 2, flat tube 2 is provided with fin 5.
After automotive air-conditioning system starts, enter collector tube assembly 1 through the gas-liquid two-phase cold-producing medium behind the expansion valve, flow into each root flat tube 2 equably by running through punching hole 8, in flat tube 2, cold is delivered in the air by fin 5, air is cooled off, reach the effect of refrigeration, cold-producing medium passes through collector tube 4 outflow evaporimeters down subsequently.This device can reach the collector tube internal pressure and be evenly distributed, two phase refrigerant gas-liquid mixed effect of uniform, thereby guaranteed that cold-producing medium flows into each root flat tube 2 uniformly, improved the refrigerating capacity and the leaving air temp distributing homogeneity of evaporimeter, when raising the efficiency, improved comfortableness.
The last collector tube assembly 1 that this device adopted can obtain preferably the assignment of traffic effect and guarantee manufacturability, heat exchanger adopts full aluminum to make, conduct heat by a plurality of flat tubes 2 that contain microchannel 10, microchannel 10 structures can be strengthened and condense and boiling heat transfer, significantly improve the heat exchanger heat exchange efficiency, and then improve the air-conditioning system Energy Efficiency Ratio, satisfy the requirement of energy-saving and emission-reduction.And microchannel 10 heat exchanger compressive resistance height, compact conformation, heat exchange area per unit volume is big, can reduce the heat exchanger cost, reduce the refrigeration system refrigerant charge, bring the benefit of a series of environmental protection aspect, make air-conditioning system can be better for people's service, great to current social effect.
Claims (6)
1. micro-channel parallel flow evaporimeter, it is characterized in that, comprise: go up collector tube assembly, some evenly distributed flat tubes, two end caps and following collector tube, wherein: two end faces going up the collector tube assembly are connected with two end caps respectively, and the two ends of every flat tube are connected with following collector tube with the bottom of last collector tube assembly respectively;
The described collector tube assembly of going up comprises: cold-producing medium distributing pipe and last collector tube mainboard, wherein: the cold-producing medium distributing pipe is connected with last collector tube mainboard, the top of cold-producing medium distributing pipe with in have the device of cold-producing medium to be connected, the bottom of cold-producing medium distributing pipe is connected with an end of every flat tube respectively.
2. micro-channel parallel flow evaporimeter according to claim 1 is characterized in that, described cold-producing medium distributing pipe is cylindrical, external diameter 8～16mm, and the bottom of this cold-producing medium distributing pipe is provided with runs through punching hole.
3. micro-channel parallel flow evaporimeter according to claim 2, it is characterized in that, the described punching hole that runs through is circle or quadrangle, this hydraulic diameter that runs through punching hole is 0.3～0.8 times a cold-producing medium distributing pipe external diameter, and this runs through the punching hole spacing distance is 0.5～1.5 times cold-producing medium distributing pipe external diameter.
4. micro-channel parallel flow evaporimeter according to claim 1 is characterized in that, described upward collector tube mainboard is a rectangle, and last collector tube mainboard is provided with jack, and the size of jack and the size of micro-channel flat are suitable.
5. micro-channel parallel flow evaporimeter according to claim 1 is characterized in that, is provided with several equally distributed microchannels in the described flat tube.
6. according to claim 1 or 4 or 5 described micro-channel parallel flow evaporimeters, it is characterized in that flat tube is provided with fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110109967 CN102141326B (en) | 2011-04-29 | 2011-04-29 | Micro-channel parallel flow evaporator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110109967 CN102141326B (en) | 2011-04-29 | 2011-04-29 | Micro-channel parallel flow evaporator |
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| Publication Number | Publication Date |
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| CN102141326A true CN102141326A (en) | 2011-08-03 |
| CN102141326B CN102141326B (en) | 2013-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110109967 Active CN102141326B (en) | 2011-04-29 | 2011-04-29 | Micro-channel parallel flow evaporator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453695A (en) * | 2013-09-07 | 2013-12-18 | 杭州蕴腾散热配件制造有限公司 | Micro-channel sterilization refrigerator special for vehicle air conditioner and manufacturing method of micro-channel sterilization refrigerator |
| US11015871B2 (en) | 2016-05-03 | 2021-05-25 | Carrier Corporation | Heat exchanger arrangement |
| US11713931B2 (en) | 2019-05-02 | 2023-08-01 | Carrier Corporation | Multichannel evaporator distributor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0632245A1 (en) * | 1993-07-01 | 1995-01-04 | THERMAL-WERKE Wärme-, Kälte-, Klimatechnik GmbH | Water-air heat exchanger of aluminium for motor vehicles |
| CN100557373C (en) * | 2005-02-02 | 2009-11-04 | 开利公司 | The heat exchanger that has perforated plate in the collector |
| CN101839590A (en) * | 2010-02-22 | 2010-09-22 | 三花丹佛斯（杭州）微通道换热器有限公司 | Micro-passage heat exchanger |
-
2011
- 2011-04-29 CN CN 201110109967 patent/CN102141326B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0632245A1 (en) * | 1993-07-01 | 1995-01-04 | THERMAL-WERKE Wärme-, Kälte-, Klimatechnik GmbH | Water-air heat exchanger of aluminium for motor vehicles |
| CN100557373C (en) * | 2005-02-02 | 2009-11-04 | 开利公司 | The heat exchanger that has perforated plate in the collector |
| CN101839590A (en) * | 2010-02-22 | 2010-09-22 | 三花丹佛斯（杭州）微通道换热器有限公司 | Micro-passage heat exchanger |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103453695A (en) * | 2013-09-07 | 2013-12-18 | 杭州蕴腾散热配件制造有限公司 | Micro-channel sterilization refrigerator special for vehicle air conditioner and manufacturing method of micro-channel sterilization refrigerator |
| CN103453695B (en) * | 2013-09-07 | 2015-10-21 | 杭州蕴腾散热配件制造有限公司 | Air conditioning for automobiles special microchannel sterilization refrigerator and preparation method |
| US11015871B2 (en) | 2016-05-03 | 2021-05-25 | Carrier Corporation | Heat exchanger arrangement |
| US11713931B2 (en) | 2019-05-02 | 2023-08-01 | Carrier Corporation | Multichannel evaporator distributor |
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| Publication number | Publication date |
|---|---|
| CN102141326B (en) | 2013-07-03 |
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