CN105865225A - Microchannel heat exchanger and air conditioner - Google Patents

Microchannel heat exchanger and air conditioner Download PDF

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Publication number
CN105865225A
CN105865225A CN201610203224.1A CN201610203224A CN105865225A CN 105865225 A CN105865225 A CN 105865225A CN 201610203224 A CN201610203224 A CN 201610203224A CN 105865225 A CN105865225 A CN 105865225A
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CN
China
Prior art keywords
micro
channel
heat exchanger
flat
fin
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Granted
Application number
CN201610203224.1A
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Chinese (zh)
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CN105865225B (en
Inventor
高秀平
刘通
刘睿
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hisense Shandong Air Conditioning Co Ltd
Original Assignee
Hisense Shandong Air Conditioning Co Ltd
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Priority to CN201610203224.1A priority Critical patent/CN105865225B/en
Publication of CN105865225A publication Critical patent/CN105865225A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00Evaporators; Condensers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media

Abstract

The invention discloses a microchannel heat exchanger and an air conditioner and relates to the technical field of air conditioners. The microchannel heat exchanger and the air conditioner are invented to solve the problem that in the prior art, heat exchange wind resistance and heat transfer resistance are increased due to the fact that condensate water or defrosted water at the roots of fins are not liable to be guided out. The microchannel heat exchanger comprises microchannel flat pipes arranged horizontally. The upper surfaces of the microchannel flat pipes are each of a cambered surface structure protruding upwards. The cambered surface structures can guide water falling onto the cambered surface structures to the edges of the microchannel flat pipes. The microchannel heat exchanger is used for conducting heat exchange with airflow.

Description

A kind of micro-channel heat exchanger and air-conditioner
Technical field
The present invention relates to air-conditioning technical field, particularly relate to a kind of micro-channel heat exchanger and air-conditioning Device.
Background technology
Micro-channel heat exchanger is a kind of heat-exchange apparatus being usually used in field of air conditioning, especially at air The field application of source heat pump is more.
Fig. 1 is the structural representation of micro-channel heat exchanger in prior art, puts including some levels The micro-channel flat 01 put, micro-channel flat 01 two ends respectively connect a header, afflux Pipe connects with micro-channel flat 01, is also equiped with some fins between adjacent micro-channel flat 02, fin 02 is installed vertically between micro-channel flat 01, with wing in micro-channel flat 01 The upper and lower surface that sheet 02 is connected is plane.
In prior art when micro-channel heat exchanger freezes as evaporimeter, air passes wing Space between sheet 02 carries out heat exchange with the refrigerant in micro-channel flat 01, and refrigerant absorbs heat sky Moisture condensation in gas, after condensed water condenses in the surface of fin 02, and along fin 02 Surface flow to root, and because of the surface tension effects of water, condensed water can be in micro-channel flat 01 The position accumulation connected with the root of fin 02;In like manner, when micro-channel heat exchanger is as condensation When device defrosts, produce substantial amounts of defrosting water during defrosting and also can accumulate at this, it is difficult to Discharging, such air-flow is in the region meeting of water accumulation in micro-channel flat, micro-channel flat Air-flow is produced resistance, thus increases the heat exchange wind resistance of micro-channel heat exchanger;And in this district In territory, air-flow is opened by water segregation with micro-channel flat, and air-flow can not directly be carried out with micro-channel flat Heat exchange, causes the heat transfer resistance of micro-channel heat exchanger to increase.
Summary of the invention
Embodiments of the invention provide a kind of micro-channel heat exchanger and air-conditioner, it is possible to resolve existing skill In art, condensed water or the defrosting water of fin root are difficult to derive and increase heat exchange wind resistance and heat transfer heat The problem of resistance.
For reaching above-mentioned purpose, embodiments of the invention adopt the following technical scheme that
A kind of micro-channel heat exchanger, including horizontally disposed micro-channel flat, described microchannel is flat The upper surface of pipe is the globoidal structure raised up, and described globoidal structure can will fall into water thereon Guide the edge of described micro-channel flat.
The invention also discloses a kind of air-conditioner, change including the microchannel described in technique scheme Hot device.
Micro-channel heat exchanger that the embodiment of the present invention provides and air-conditioner, micro-including horizontal positioned Passage flat tube, and its upper surface is the globoidal structure raised up, so at micro-channel heat exchanger The condensed water produced when freezing or heat or defrosting neatly fall the upper table of micro-channel flat During face, under gravity, condensed water or defrosting water overcome capillary effect, along The curved upper surface of micro-channel flat flow to edge and discharges, and therefore, condensed water or defrosting water can Being exported rapidly the upper surface of micro-channel flat, water guide is effective, reduces micro-channel heat exchanger Heat exchange wind resistance and heat transfer resistance.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below The accompanying drawing used required in embodiment or description of the prior art will be briefly described, aobvious and Easily insight, the accompanying drawing in describing below is only some embodiments of the present invention, for this area From the point of view of those of ordinary skill, on the premise of not paying creative work, it is also possible to according to these Accompanying drawing obtains other accompanying drawing.
Fig. 1 is the schematic cross-section of micro-channel heat exchanger in prior art;
Fig. 2 is the structural representation of micro-channel heat exchanger in the embodiment of the present invention;
Fig. 3 is the schematic cross-section of micro-channel heat exchanger in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical side in the embodiment of the present invention Case is clearly and completely described, it is clear that described embodiment is only the present invention one Divide embodiment rather than whole embodiments.Based on the embodiment in the present invention, this area is general The every other embodiment that logical technical staff is obtained under not making creative work premise, Broadly fall into the scope of protection of the invention.
In describing the invention, it is to be understood that term " " center ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward " Deng instruction orientation or position relationship be based on orientation shown in the drawings or position relationship, be only for It is easy to describe the present invention and simplifying describe rather than instruction or the device of hint indication or element Must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that right The restriction of the present invention.
Micro-channel heat exchanger include two headers, be installed between two headers some micro- Passage flat tube and be arranged at the fin between adjacent two micro-channel flat, along micro-channel flat Axis, fin is uniformly distributed, and air-flow gap between side two fin of fin is blown to wing The opposite side of sheet, in the process, air-flow and the heat transferring medium in micro-channel flat carry out heat friendship Change, thus realize air-flow and heat up or the function of cooling.
With reference to Fig. 2, the micro-channel heat exchanger of the embodiment of the present invention, including horizontally disposed micro-logical Road flat tube 1, especially, the upper surface of micro-channel flat 1 is the globoidal structure raised up, This globoidal structure is capable of to fall into water thereon and lead the edge of micro-channel flat 1.
The micro-channel heat exchanger that the embodiment of the present invention provides, including the micro-channel flat of horizontal positioned 1, and its upper surface is the globoidal structure raised up, so in micro-channel heat exchanger system When condensed water that is cold or that produce when heating or defrosting neatly fall the upper surface of micro-channel flat 1, Under gravity, condensed water or defrosting water can be along the curved upper surface streams of micro-channel flat 1 Discharging to edge, therefore, condensed water or defrosting water can be exported rapidly the upper of micro-channel flat Surface, water guide is effective, reduces heat exchange wind resistance and the heat transfer resistance of micro-channel heat exchanger.
Further, the lower surface of micro-channel flat 1 is set to downwardly convex cambered surface knot Structure, slides to the water at edge from the upper surface of micro-channel flat 1, can continue along micro-channel flat 1 Lower surface draw to next layer of fin, the water guide effect making micro-channel heat exchanger is more preferable.
Based on above-described embodiment, it is preferable that the cross section of micro-channel flat 1 is set to ellipse, As shown in Figure 3.Water can along the edge of the runner upper surface both sides, center of micro-channel flat 1, Compare and the cross section of micro-channel flat 1 is set to the globoidal structure that other centers offset to one side Surround, the water of micro-channel flat 1 center can the simultaneously diffluence to both sides, thus, microchannel The water conservancy diversion of heat exchanger is in hgher efficiency, and the flat tube process operation of ellipse is simple.
Specifically, the micro-channel heat exchanger of the embodiment of the present invention includes that multiple parallel and interval is arranged Micro-channel flat, and between two adjacent micro-channel flat, be provided with fin 2, wherein, Fin 2 is perpendicular to the axis of micro-channel flat 1 and installs, the surface of fin 2 and micro-channel flat 1 is vertical.According to the fin of traditional square plate shape, micro-channel flat contacts with fin Area is little, and after the water of micro-channel flat edge gathers along its lower surface, then it is micro-to fall lower floor On passage flat tube, because the accumulation of water needs the regular hour, its water guide efficiency is low;Preferably, In the embodiment of the present invention lower edges of fin 2 respectively with adjacent micro-channel flat cross section Upper bottom profiled matches, and is i.e. downwardly convex globoidal structure when the lower surface of micro-channel flat 1 Time, the upper edge of fin 2 is the arcuate structure of the concave downward matched;When microchannel is flat When the upper surface of pipe 1 is the globoidal structure raised up, the lower edge of fin 2 is for matching The arcuate structure upwards caved in, as it is shown on figure 3, flow to the upper surface of upper strata micro-channel flat The water of edge, the gap that can directly connect with this micro-channel flat lower surface along fin flow to Fin surface, water velocity faster, thus, the drainage efficiency of micro-channel heat exchanger is higher.
Further, if the dual-side of fin 2 exceeds the dual-side of micro-channel flat 1, because of The structural strength of fin 2 is relatively low, when transport or dismounting, protrudes from the wing of micro-channel flat 1 Sheet is easily impaired because colliding with, and when wind speed is bigger, fin 2, by gas shock, holds Easily shaking, fin 2 clashes into micro-channel flat 1 for a long time, and fin can be caused abrasion occur also Accelerate the aging deformation of fin.It is therefore preferred that the embodiment of the present invention is by the both sides of fin 2 While be set to the structure of the dual-side without departing from micro-channel flat 1, fin 2 and micro-channel flat 1 fixed effect is more preferable, is not likely to produce vibrations, and fin also will not when dismounting or transport quilt Bump to.
In order to strengthen the heat exchange efficiency of micro-channel flat, it is preferable that the micro-of the embodiment of the present invention is led to The inwall of road flat tube 1 be provided with can the fin 3 of heat conduction, fin 3 adds micro-channel flat 1 Heat exchange area, thus strengthen the heat exchange efficiency of micro-channel heat exchanger.
Further, above-mentioned multiple fins are uniformly distributed in the inwall of micro-channel flat 1, Make the heat exchange area in each region in micro-channel flat identical, prevent hot-spot or supercooling, and lead Cause that heat transfer effect is the best or frosting.
Additionally, include multiple microchannel in micro-channel flat 1, it is equipped with in each microchannel The fin stated.Preferably, the heat exchange area of multiple microchannels is identical, correspondingly, and each microchannel Inside it is configured to fin quantity the most identical, therefore, the heat-transfer surface of each microchannel in micro-channel flat Long-pending equivalent increases.
In order to heat transferring medium being evenly distributed to each micro-channel flat, above-mentioned Thermal Performance of Micro Channels Device also includes two headers being vertically arranged 4, and multiple micro-channel flat are respectively positioned on header 4 Between, and each micro-channel flat is all connected with two headers, heat transferring medium is by side After header distributes to each micro-channel flat, enter back into each microchannel in micro-channel flat In, finally in the header of opposite side, make heat transferring medium be convergeed to together, enter through pipeline Enter next stroke.Because header is for being vertically arranged, therefore, heat transferring medium can commutate flowing, Micro-channel heat exchanger is made to be capable of refrigeration or heat-production functions.
The embodiment of the present invention also includes a kind of air-conditioner, have employed above-mentioned all of Thermal Performance of Micro Channels Device.Air-conditioner is provided with heat exchange dress in including indoor set and off-premises station, indoor set and off-premises station Put, because this micro-channel heat exchanger can not only be used for condenser, it is possible to evaporimeter uses, thus indoor Machine or indoor set all can use this micro-channel heat exchanger as heat-exchanger rig.Due at the present embodiment Air-conditioner in each embodiment of micro-channel heat exchanger and above-mentioned micro-channel heat exchanger of installing The micro-channel heat exchanger structure provided is identical, and therefore the two can solve the problem that identical technical problem, And reach identical Expected Results.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is also Being not limited to this, any those familiar with the art is at the technology model that the invention discloses In enclosing, change can be readily occurred in or replace, all should contain within protection scope of the present invention. Therefore, protection scope of the present invention should be as the criterion with described scope of the claims.

Claims (10)

1. a micro-channel heat exchanger, including horizontally disposed micro-channel flat, it is characterised in that The upper surface of described micro-channel flat is the globoidal structure raised up, and described globoidal structure can be by Fall into water thereon and guide the edge of described micro-channel flat.
Micro-channel heat exchanger the most according to claim 1, it is characterised in that described micro-logical The lower surface of road flat tube is downwardly convex globoidal structure.
Micro-channel heat exchanger the most according to claim 2, it is characterised in that described micro-logical The cross section of road flat tube is oval.
4. according to the micro-channel heat exchanger according to any one of claims 1 to 3, it is characterised in that Described micro-channel flat is multiple, and multiple described micro-channel flat are parallel and interval is arranged, adjacent Connect between two micro-channel flat and have fin, the surface of described fin and described micro-channel flat Axis is vertical, the cross section lower whorl of the upper edge of described fin and the micro-channel flat being positioned above Exterior feature matches, the cross section of the lower edge of described fin and the described micro-channel flat being disposed below Upper profile matches.
Micro-channel heat exchanger the most according to claim 4, it is characterised in that described fin Dual-side without departing from the both sides of described micro-channel flat.
6. according to the micro-channel heat exchanger according to any one of claims 1 to 3, it is characterised in that The inwall of described micro-channel flat is provided with can the fin of heat conduction.
Micro-channel heat exchanger the most according to claim 6, it is characterised in that described fin For multiple and be uniformly distributed in the inwall of described micro-channel flat.
Micro-channel heat exchanger the most according to claim 6, it is characterised in that described micro-logical Include in road flat tube multiple microchannel, in each described microchannel, being equipped with described fin.
Micro-channel heat exchanger the most according to claim 4, it is characterised in that also include two The individual header being vertically arranged, multiple described micro-channel flat between two described headers, And the two ends of each described micro-channel flat connect with two described headers respectively.
10. an air-conditioner, it is characterised in that include according to any one of claim 1~9 Micro-channel heat exchanger.
CN201610203224.1A 2016-04-01 2016-04-01 A kind of micro-channel heat exchanger and air conditioner Active CN105865225B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610203224.1A CN105865225B (en) 2016-04-01 2016-04-01 A kind of micro-channel heat exchanger and air conditioner

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Application Number Priority Date Filing Date Title
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CN105865225B CN105865225B (en) 2018-03-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114440686A (en) * 2022-01-28 2022-05-06 广东美的暖通设备有限公司 Heat exchanger fin, heat exchanger and air conditioning system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6546998B2 (en) * 2000-12-01 2003-04-15 Lg Electronics Inc. Tube structure of micro-multi channel heat exchanger
CN200965372Y (en) * 2006-10-10 2007-10-24 海信集团有限公司 Air conditioner heat exchanger
CN101776357A (en) * 2009-01-09 2010-07-14 三花丹佛斯(杭州)微通道换热器有限公司 Heat exchanger
CN202793131U (en) * 2012-07-10 2013-03-13 广东美的电器股份有限公司 Parallel flow heat exchanger and flat tube section bars thereof
CN203231587U (en) * 2013-04-01 2013-10-09 广东美的制冷设备有限公司 Micro-channel parallel flow heat exchanger
CN203249530U (en) * 2013-03-25 2013-10-23 浙江盾安热工科技有限公司 Microchannel flat tube and heat exchanger with same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6546998B2 (en) * 2000-12-01 2003-04-15 Lg Electronics Inc. Tube structure of micro-multi channel heat exchanger
CN200965372Y (en) * 2006-10-10 2007-10-24 海信集团有限公司 Air conditioner heat exchanger
CN101776357A (en) * 2009-01-09 2010-07-14 三花丹佛斯(杭州)微通道换热器有限公司 Heat exchanger
CN202793131U (en) * 2012-07-10 2013-03-13 广东美的电器股份有限公司 Parallel flow heat exchanger and flat tube section bars thereof
CN203249530U (en) * 2013-03-25 2013-10-23 浙江盾安热工科技有限公司 Microchannel flat tube and heat exchanger with same
CN203231587U (en) * 2013-04-01 2013-10-09 广东美的制冷设备有限公司 Micro-channel parallel flow heat exchanger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114440686A (en) * 2022-01-28 2022-05-06 广东美的暖通设备有限公司 Heat exchanger fin, heat exchanger and air conditioning system

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