CN106985637B - A kind of automobile air-conditioning refrigeration equipment - Google Patents
A kind of automobile air-conditioning refrigeration equipment Download PDFInfo
- Publication number
- CN106985637B CN106985637B CN201710174642.7A CN201710174642A CN106985637B CN 106985637 B CN106985637 B CN 106985637B CN 201710174642 A CN201710174642 A CN 201710174642A CN 106985637 B CN106985637 B CN 106985637B
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- flat tube
- tube
- chamber
- pipe
- distribution pipe
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 14
- 238000004378 air conditioning Methods 0.000 title claims abstract description 10
- 230000017525 heat dissipation Effects 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims abstract description 5
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 3
- 239000003507 refrigerant Substances 0.000 claims description 49
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 24
- 239000012071 phase Substances 0.000 description 19
- 238000000926 separation method Methods 0.000 description 14
- 239000007791 liquid phase Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 12
- 239000012808 vapor phase Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3202—Cooling devices using evaporation, i.e. not including a compressor, e.g. involving fuel or water evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H2001/3286—Constructional features
- B60H2001/3289—Additional cooling source
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A kind of automobile air-conditioning refrigeration equipment comprising evaporator, evaporator include a distribution pipe, a collector tube and several micro-channel flats, in which: collector tube is placed in parallel with distribution pipe；Micro-channel flat is assembled between the collector tube and distribution pipe, and the fin for heat dissipation is provided between adjacent flat tube；Equipped with multiple microchannels for fluid flowing in flat tube, the fin for heat dissipation is provided between adjacent flat tube, it is characterised in that: fin surface has the heat bulge of array arrangement, and the protrusion includes tilting section, segmental arc, along air-flow direction, tilting section is located at upstream；Spacing X, projection length Y, and X=(0.35-0.5) Y between each protrusion.
Description
Technical field
The present invention relates to a kind of device of automobile air-conditioning refrigeration technical field, specifically a kind of automobile air-conditioning refrigeration is set
It is standby.
Background technique
Microchannel is widely used in refrigerating field, is especially used in air conditioning for automobiles.It is evaporated with traditional pipe type
Device is compared, and micro-channel evaporator has coefficient of heat transfer height, small in size, light-weight, and refrigerant charge is few to be substantially reduced with cost
Etc. advantages.But micro-channel evaporator has two phase refrigerant distributing uniformity.It is in particular in: micro-channel flat
Outlet superheat degree is unevenly distributed, and there is larger differences, such as one for the flow and mass dryness fraction for being assigned to the refrigerant in each road flat tube
Part micro-channel flat exit refrigerant superheat degree is higher, opposite, and even there is also not complete in a part of flat tube exit
The liquid refrigerant vaporized entirely fails the latent heat of phase change for making full use of liquid refrigerant, leads to the heat exchange property of entire evaporator
Decline.
Domestic and foreign scholars have done many researchs to micro-channel evaporator liquid separation unevenness problem, but most of assignment of traffic skills
Art is based primarily upon the uniformity adjustment to refrigerant flow in flat tube, rather than is adjusted to two phase refrigerant mass dryness fraction.Then, nothing
By how evaporation structure and size being designed and being optimized, entrance mass dryness fraction, flow all not can avoid to freezing in evaporator
The restriction that agent flux evenly distributes；And in actual product application, the control of assignment of traffic needs to carry out multiple experiment tune
It is whole, just evaporator can be made to obtain ideal heat transfer effect.
In the prior art, there is the size by adjusting punching hole corresponding to flat tube, balance each road flat tube pressure drop and have reached point
The uniform purpose of liquid, but do not solve fundamentally to enter influence of the evaporator refrigerant mass dryness fraction to assignment of traffic.Also there is compression
The high temperature and high pressure gas of machine discharge is condensed into highly pressurised liquid through condenser, utilizes the flash gas after throttling subsequently into regenerator
Supercooling, two phase refrigerant separate gaseous refrigerant in gas-liquid separator, are passed into the heat that highly pressurised liquid is absorbed in regenerator
It measures and reaches superheat state；So that the distribution of gas-liquid two-phase cold-producing medium is converted into the distribution of liquid phase refrigerant by the method, improves
Liquid separation uneven phenomenon and the heat exchange efficiency for improving evaporator, but it is added to intermediate regenerator, gas-liquid separator in system
With several complex pipelines, evaporating pressure is reduced, can not also match micro-channel evaporator performance efficiency, compact-sized feature.
Summary of the invention
It is used for automobile air-conditioning refrigeration equipment in view of the deficiencies of the prior art, the present invention provides a kind of, is specially one kind
Micro-channel evaporator, which significantly improves the uneven problem of two phase refrigerant flow distribution, while reducing evaporator
Pressure drop, it is compact-sized under the premise of realize evaporator heat exchange performance promotion.
The present invention is achieved by the following technical solutions, and the present invention includes:
Evaporator, including a distribution pipe and a collector tube；Distribution pipe is divided into first chamber and second by restricting orifice
Chamber；The micro-channel flat of several uniform parallel arrangements is assembled between distribution pipe and collector tube, is arranged between adjacent flat tube
There is the fin for heat dissipation.Most of flat tube is connected with first chamber, and finally flat tube is connected with second chamber all the way；One
Small-sized gas-liquid separation pipe is assembled in inside distribution pipe, into two phase refrigerant gas-liquid separation in separating pipe of evaporator.
The separating pipe be cylindrical shape, one end with distribute tube inlet be connected, the other end be connected with restricting orifice and
If being equipped with dry passage in separating pipe side wall so that liquid phase refrigerant flows into first chamber.Separation tube hub assembly has a spiral board, and two
Phase refrigerant carries out gas-liquid separation by the effect of centrifugal force.
The restricting orifice center is equipped with through hole, and orifice center aligns with tube hub is separated, itself can be with
Play the role of equilibrium pressure drop；Through hole is bellmouth, it is therefore an objective to hinder liquid phase refrigerant to flow into second chamber and guide liquid phase
Refrigerant flow direction separates tube wall, to guarantee separating effect.
A kind of method of the separation gas-liquid two-phase cold-producing medium, in which:
When two phase refrigerant inflow divides separating pipe, managing interior fluidised form is circulation.Spiral board screw type runner provide from
Under mental power function, liquid phase refrigerant flow direction separation inside pipe wall simultaneously flows into first chamber by the channel of separating pipe side wall, finally quilt
It is uniformly distributed in most of flat tube；Vapor phase refrigerant then rises along the spiral board for being located at separation tube hub, passes through through hole
It is flowed into second chamber and flat tube flows into collector tube all the way along finally.
After refrigeration system starting, the two phase refrigerant by throttling enters distribution pipe, the liquid phase refrigeration that gas-liquid separation goes out
Agent is evenly distributed in most of flat tube, wherein fluid interchange, to achieve the effect that refrigeration.Due to entering in flat tube
Refrigerant is single liquid phase refrigerant, and it is uneven to avoid refrigerant liquid separation caused by two phase flow pressure field distribution unevenness in collector
Phenomenon, so that assignment of traffic is uniform in each flat tube.
Distribution pipe of the invention is built-in to be embedded with separating pipe and restricting orifice, makes two phase refrigerant gas-liquid point by separating pipe
From restricting orifice controls vapor phase refrigerant bypass, which can solve mass dryness fraction to the shadow of flow distribution of refrigerant uniformity significantly
It rings, while reducing the pressure drop of evaporator, the promotion of evaporator heat exchange performance is realized under the premise of compact-sized.
Detailed description of the invention
Fig. 1 is the schematic arrangement schematic diagram of one evaporator of embodiment.
Fig. 2 is concrete structure schematic diagram in one distribution pipe of embodiment
Fig. 3 is fin surface bulge-structure
Fig. 4 is open-celled structure on spiral board
Fig. 5 is restricting orifice portion structure
Specific embodiment
Now, it will be described in detail the embodiment of the present invention, the example of these embodiments be shown in the attached drawings.However, this
Invention can be embodied as multiple and different forms, and should not be construed as being limited to embodiments set forth herein.
Embodiment 1, referring to attached drawing 1-5:
As shown in Figure 1, the present invention provides a kind of evaporators, comprising: 1, collector tube 2 of a distribution pipe and several micro-
Channel flat tube 3, in which: the distribution pipe 1 and collector tube 2 is placed in parallel vertical and separated by a distancely, several uniformly flat
The micro-channel flat 3 of row arrangement is assembled between distribution pipe 1 and collector tube 2.The both ends of every flat tube 3 respectively with distribution pipe 1 with
Collector tube 2 is connected, and is uniformly distributed the microchannel for refrigerant flowing, the hydraulic radius of microchannel equipped with several in flat tube
For 0.5mm.The fin 6 for heat dissipation is equipped between adjacent flat tube；Referring to Fig. 3,6 surface of fin has the heat dissipation of array arrangement
Protrusion, the protrusion include tilting section 21, segmental arc 22, and along air-flow direction, tilting section 21 is located at upstream, tilting section 21 and wing
The angle on 6 surface of piece is 30-40 °；Spacing X, projection length Y, and X=0.35-0.45Y between each protrusion, are had found by research
Configuration can effectively reduce turbulent flow, reflux under the ratio, to increase the heat dissipation effect of air flowing.Lead between fin 6 and flat tube 3
Cross heat conductive adhesive connection.
As shown in Fig. 2, the distribution pipe 1 is cylindrical shape, the two phase refrigerant into evaporator is equal in distribution pipe
It is assigned to each micro-channel flat 3 evenly.Distribution pipe 1 is built-in to be embedded with restricting orifice 5 and separating pipe 4, in which:
Distribution pipe is divided into first chamber 7 and second chamber 8 by the restricting orifice 5.5 center of restricting orifice is equipped with and passes through
Perforation 9 should be 2-10mm through bore dia, and orifice center aligns with tube hub is separated, itself can play Balance Air
The effect of body runner and flow channel for liquids pressure drop；Through hole 9 is bellmouth, arc transition between bellmouth and restricting orifice 5, purpose
It is to hinder liquid phase refrigerant to flow into second chamber 8 and liquid phase refrigerant is guided to flow to separating pipe side wall 10, to guarantee separating effect.
The separating pipe 4 is cylindrical shape, and one end is connected with distribution tube inlet 17, and the other end is connected with restricting orifice 5
It is logical, and if dry passage 19 is equipped on separating pipe side wall 10 so that liquid phase refrigerant flows into first chamber 7.4 center of separating pipe dress
Embedded with spiral board 11, two phase refrigerant carries out gas-liquid separation by the effect of centrifugal force.
The collector tube 2 is cylindrical shape, and the flash gas of bypass and the vapor phase refrigerant of heat exchange vaporization are in collector tube 2
Converge and flows out evaporator together.
One end 14 of the micro-channel flat 3 is inserted into distribution pipe 1, most of first flat tube 12 and 7 phase of first chamber
Connection, finally the second flat tube 13 is connected with second chamber 8 all the way.
The other end 15 of the micro-channel flat 3 is inserted into collector tube 2, and all flat tubes are connected with collector tube chamber 16
It is logical.
Referring to fig. 4, spiral board 11 is spiral vane formula structure, the blade surface setting within the scope of each 1/2P screw pitch
There are multiple apertures, such as three, radially inner side 2, radial outside 1,23 be 11 axis of spiral board, and 24 be bore axis, and is opened
Hole is conical through-hole, and along refrigerant flow direction (referring to fig. 2, from bottom to top), bellmouth lower part is big, top is small, and opening axis
It is 40-45 ° that line and eddy flow plate axis, which are preferably angle,.Along refrigerant flow direction, radial direction of the aperture from 11 axis of spiral board
Distance gradually becomes smaller, this configuration can effectively be crushed, separate bubble, gain separating effect.
It is greater than the lower diameter H of through hole 9 referring to Fig. 5, the diameter K of spiral board 11, to guarantee efficiently separating for gas-liquid.Point
There is conical opening 25 from 10 top of tube wall, the position of conical opening 25 is located under the bottom end of through hole 9, the top of spiral board 11 it
On.Multiple water conservancy diversion uniform blades 26 are evenly equipped on 9 inner wall of through hole, which is in inverted trapezoidal, can be effectively to gas
Phase refrigerant carries out water conservancy diversion, the fluidized―bed furnace of homogenous gas-phase refrigerant.
When refrigeration system works, the gas-liquid two-phase cold-producing medium generated after expanded valve throttling enters evaporator.Two-phase refrigeration
Agent flows into separating pipe 4 from distribution tube inlet 17, and managing interior fluidised form is circulation.In the centrifugal force that 11 screw type runner of spiral board provides
Under effect, the radius of turn of liquid phase refrigerant is much bigger compared to vapor phase refrigerant.Vapor phase refrigerant is along positioned at 4 center of separating pipe
Spiral board 11 rise；Liquid phase refrigerant is then biased to separating pipe side wall 10 and flows into first chamber by the channel 19 of side wall, from
And realize gas-liquid separation.Second chamber 8 is flowed by the vapor phase refrigerant of through hole 5 and flat tube 13 flows into collection all the way along finally
Liquid pipe 2；Liquid phase refrigerant is evenly distributed most of flat tube 12 and fluid interchange wherein in first chamber 7, vaporization
Collector tube 2 is flowed into afterwards.Two strands of gases flow out after converging in collector tube 2 from collector tube outlet 18.
Distribution pipe of the present invention embeds restricting orifice and the design of separating pipe is obtained by bypass vapor phase refrigerant
Good flow distribution of refrigerant effect, is improved greatly the heat exchange property of evaporator under the premise of compact-sized.?
In the embodiment of the present invention, as needed and actual conditions can suitably adjust the position of separating pipe and restricting orifice, to guarantee
Gas-liquid separation effect.The quantity of adjustable gas circuit flat tube and fluid path flat tube simultaneously, with equilibrium pressure drop and refrigerant flow.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in
Within protection scope of the present invention.
Claims (3)
1. a kind of automobile air-conditioning refrigeration equipment comprising evaporator, it is characterised in that: evaporator includes distribution pipe, collector tube, flat
Pipe, fin are equipped with multiple flat tubes arranged in parallel between distribution pipe and collector tube, be equipped in flat tube multiple for the micro- of fluid flowing
Channel is provided with the fin for heat dissipation between adjacent flat tube, and fin surface has the heat bulge of array arrangement, described convex
Rising includes tilting section, segmental arc, and along air-flow direction, tilting section is located at upstream；Spacing X, projection length Y between each protrusion,
And X=(0.35-0.5) Y；
Restricting orifice, separating pipe are equipped in distribution pipe, distribution pipe is divided into first chamber and second chamber by restricting orifice；Multiple
One flat tube is connected with first chamber, and second flat tube is connected with second chamber；Separating pipe is circumferentially with multiple channels,
For being connected to first chamber, the axially open of separating pipe is connected to the through hole of restricting orifice；Pass through between fin and flat tube
Heat conductive adhesive connection；Spiral board is equipped in separating pipe, the spiral board is spiral vane formula structure, in each 1/2 spiral shell
Blade surface within the scope of P is provided with multiple apertures.
2. automobile air-conditioning refrigeration equipment according to claim 1, which is characterized in that the aperture is bellmouth, opening axis
Line and the inclined angle of eddy flow plate axis are arranged.
3. automobile air-conditioning refrigeration equipment according to claim 2, which is characterized in that along refrigerant flow direction, aperture from
The radial distance of eddy flow plate axis gradually becomes smaller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710174642.7A CN106985637B (en) | 2017-03-22 | 2017-03-22 | A kind of automobile air-conditioning refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710174642.7A CN106985637B (en) | 2017-03-22 | 2017-03-22 | A kind of automobile air-conditioning refrigeration equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106985637A CN106985637A (en) | 2017-07-28 |
| CN106985637B true CN106985637B (en) | 2019-07-26 |
Family
ID=59412157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710174642.7A Active CN106985637B (en) | 2017-03-22 | 2017-03-22 | A kind of automobile air-conditioning refrigeration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106985637B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017599B (en) * | 2019-05-10 | 2024-01-23 | 四川省机械研究设计院(集团)有限公司 | Dual-energy water heater capable of rapidly supplying heat |
| CN113306476B (en) * | 2021-07-29 | 2021-11-12 | 招远华丰机械设备有限公司 | Special chassis for underground diesel engine trackless blasting equipment carrier vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS563895A (en) * | 1979-06-20 | 1981-01-16 | Hitachi Ltd | Heater core |
| JPS6314092A (en) * | 1986-07-03 | 1988-01-21 | Nippon Denso Co Ltd | Heat exchanger |
| EP1164345A4 (en) * | 1999-12-14 | 2006-04-26 | Denso Corp | Heat exchanger |
| CN101568792A (en) * | 2006-11-13 | 2009-10-28 | 开利公司 | Minichannel heat exchanger header insert for distribution |
| CN104422201A (en) * | 2013-08-27 | 2015-03-18 | 浙江盾安热工科技有限公司 | Gas-liquid separation type evaporator |
-
2017
- 2017-03-22 CN CN201710174642.7A patent/CN106985637B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS563895A (en) * | 1979-06-20 | 1981-01-16 | Hitachi Ltd | Heater core |
| JPS6314092A (en) * | 1986-07-03 | 1988-01-21 | Nippon Denso Co Ltd | Heat exchanger |
| EP1164345A4 (en) * | 1999-12-14 | 2006-04-26 | Denso Corp | Heat exchanger |
| CN101568792A (en) * | 2006-11-13 | 2009-10-28 | 开利公司 | Minichannel heat exchanger header insert for distribution |
| CN104422201A (en) * | 2013-08-27 | 2015-03-18 | 浙江盾安热工科技有限公司 | Gas-liquid separation type evaporator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106985637A (en) | 2017-07-28 |
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| TA01 | Transfer of patent application right | ||
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Effective date of registration: 20190517 Address after: 400000 2-2-1-61 319 Haier Road, Jiangbei District, Chongqing. Applicant after: Chongqing Steady Technology Co.,Ltd. Address before: 213300 Room 301, Block C, 168 Wushen Road, Liyang City, Changzhou City, Jiangsu Province Applicant before: LIYANG YINGCHUANG ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20190625 Address after: 545000 No. 8 Xinyue Road, Liuzhou City, Guangxi Zhuang Autonomous Region Applicant after: GUANGXI YIDE TECHNOLOGY CO.,LTD. Address before: 400000 2-2-1-61 319 Haier Road, Jiangbei District, Chongqing. Applicant before: Chongqing Steady Technology Co.,Ltd. |
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Denomination of invention: A kind of automobile air conditioning refrigeration equipment Effective date of registration: 20221215 Granted publication date: 20190726 Pledgee: China Construction Bank Corporation Liuzhou Branch Pledgor: GUANGXI YIDE TECHNOLOGY CO.,LTD. Registration number: Y2022450000232 |
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Date of cancellation: 20231222 Granted publication date: 20190726 Pledgee: China Construction Bank Corporation Liuzhou Branch Pledgor: GUANGXI YIDE TECHNOLOGY CO.,LTD. Registration number: Y2022450000232 |