CN106403389A - Micro-channel heat exchanger, refrigerator and air-cooled refrigerator - Google Patents
Micro-channel heat exchanger, refrigerator and air-cooled refrigerator Download PDFInfo
- Publication number
- CN106403389A CN106403389A CN201610795115.3A CN201610795115A CN106403389A CN 106403389 A CN106403389 A CN 106403389A CN 201610795115 A CN201610795115 A CN 201610795115A CN 106403389 A CN106403389 A CN 106403389A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- fin
- micro
- tube
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- F25B39/02—Evaporators
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/14—Collecting or removing condensed and defrost water; Drip trays
-
- 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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/02—Details of evaporators
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/09—Improving heat transfers
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
- F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
- F25D2321/142—Collecting condense or defrost water; Removing condense or defrost water characterised by droplet guides
Abstract
The invention discloses a micro-channel heat exchanger, a refrigerator and an air-cooled refrigerator. The micro-channel heat exchanger comprises two collecting tubes, a plurality of heat exchange tubes and fins. The two collecting tubes are arranged in parallel. The two ends of each heat exchange tube are respectively connected with the two collecting tubes. The heat exchange tubes are bent in the length direction to form a plurality of tube layers. Each fin is arranged between the two adjacent tube layers or is arranged on the outer side of the tube layer on the outermost layer. Each fin extends in a shape of a wave in the extension direction of each heat exchange tube. Each fin extends continuously in the extension direction of each collecting tube. Vent holes are formed in the fins. According to the micro-channel heat exchanger, during the process of defrosting, frosted water on the surfaces of the fins can be accumulated into water drops, and the water drops can slide down smoothly along the continuous fins and are drained, so that the problem that because the amount of water on the surface of the fins is relatively large, all water cannot be drained is solved, and the condition that ice is generated on the surface of the micro-channel heat exchanger, so that the heat exchange efficiency is influenced can be prevented. In addition, through the arrangement of the vent holes, air flowing can be promoted, and the heat exchange amount is increased.
Description
Technical field
The present invention relates to refrigeration and heat dissipation equipment field, especially relate to a kind of micro-channel heat exchanger and refrigerator, air-cooled ice
Case.
Background technology
Development on Thermal Performance of Micro Channels engineering stems from high-density electronic device cooling and microelectromechanical systems passes
The demand of heat, because its compact conformation, heat exchange efficiency are high, on domestic market, microchannel obtains in air conditioning for automobiles industry at first
Industrialized development.
The refrigeration system applying a new generation nature coolant CO2 is supercritical steam cycle, and system pressure is very high.For example in air-conditioning
In system, system high pressure operating pressure will be to more than 13MPa, and design pressure will reach 42.5MPa, and this is to compressor and heat exchanger
Resistance to pressure all propose very high requirement.On the premise of compact conformation, micro-channel condenser can meet simultaneously resistance to pressure,
Durability and security of system.Improve with production technology, micro-channel heat exchanger is increasingly becoming the favorite of heat exchanger circle, application row
Industry gets more and more.Because present refrigerator plot ratio requires more and more higher, refrigerator becomes refrigerator development using micro-channel evaporator and becomes
One of gesture.
Common micro-channel evaporator fin clearance is less, and finned length is less, is applied in refrigerator and can there is frost layer
Accumulating rate is too fast, and frost layer easily blocks fin clearance, leads to that refrigerator defrost interval time is short, defrost is frequent.Defrost simultaneously
Because fin is shorter in journey, on fin, moisture is not easy to be accumulated into drip and drips, and leads to defrosting water to be difficult to drain, finally in vaporizer
Surface forms stupid ice, affects heat transfer effect.
Content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.For this reason, the present invention
Individual aspect is directed to a kind of micro-channel heat exchanger, and this micro-channel heat exchanger easily drains defrosting water in defrosting.
Further object is that providing a kind of refrigerator with above-mentioned micro-channel heat exchanger and wind cooling refrigerator.
According to the micro-channel heat exchanger of the present invention, including：Two headers, described two headers be arranged in parallel；Multiple
Heat exchanger tube, the two ends of the plurality of heat exchanger tube connect described two headers respectively, and the plurality of heat exchanger tube is along its length
It is bent to form multiple tube layer；At least one fin, each described fin is located between two neighboring described tube layer or is located at outermost
The outside of the described tube layer of layer, the corrugated extension of each described fin on the bearing of trend of described heat exchanger tube, in described collection
On the bearing of trend of flow tube, each described fin continuously extends, and in the described tube layer that is located with it of each described fin at least
Two described heat exchanger tubes are connected, and described fin is provided with air vent.
Micro-channel heat exchanger according to embodiments of the present invention, by the setting of the outside of adjacent tube layer or outermost tube layer
Fin, the corrugated extension of each fin on the bearing of trend of heat exchanger tube, on the bearing of trend of header, each fin connects
Renew and stretch, thus micro-channel heat exchanger is during defrosting, fin surface frosted water can be accumulated into water droplet, water droplet can be along continuous
Fin swimmingly landing draining, solves the problems, such as that fin surface is hung that the water yield is larger, cannot be drained, can prevent Thermal Performance of Micro Channels
Device surface produces stupid ice and affects heat exchange efficiency.In addition, by arranging air vent on fin, promoting fin various location empty
Gas phase mutually flows, and prevents other regions that fin local gap is led to by frost layer blocking from not having air circulation, thus increasing heat exchange
The overall heat exchange amount of device.
In certain embodiments, at least one described fin includes the first fin section and the second fin section, in described afflux
On the bearing of trend of pipe, the size of described first fin section is more than the size of described second fin section.Thus, air can be easily
It is blown between the inner tube layer of micro-channel heat exchanger, increases the distribution space of frost layer, reduce fin bottom portion frost layer accumulated amount
And speed, reduce the performance impact to micro-channel heat exchanger for the frosting, extend the defrost cycle.
Alternatively, on the bearing of trend of described header, the size of described second fin section is described first fin section
Size 0.67-0.75.
In certain embodiments, the first fin section described in each described fin and its place of described second fin Duan Junyu
Described tube layer in all described heat exchanger tubes be connected.So can ensure that whole heat exchanger tubes all can be connected with fin, fix.
Specifically, on the bearing of trend along described header, the institute that the windward side of described second fin section is located with it
Stating the contact size between outermost described heat exchanger tube in tube layer is 5-10 millimeter.Thereby it is ensured that fin is changed with outermost
Heat pipe contacts, and on fin when preventing fin hanging, water droplet is unable to following current to outermost heat exchanger tube.
In certain embodiments, described air vent is located at the two neighboring described flat tube of the described tube layer that described fin is located
Between gap.So pass through air vent and the connection of the space of same tube layer not only can be got up moreover it is possible to by different tube layer
Space connection is got up, and so that the air of heat exchanger diverse location is sufficiently mixed further so that wind pushing temperature is more uniform.
In certain embodiments, on the bearing of trend of described header, the size of described air vent is 15-18 millimeter,
On the bearing of trend of described header, the size of described air vent is 4-7 millimeter.
In certain embodiments, on the bearing of trend of described heat exchanger tube, each described fin all includes being cross-linked
Parallel walls and vertical wall are paralleled with the bearing of trend of described heat exchanger tube with forming zigzag, described parallel walls, described vertical wall
Perpendicular with the bearing of trend of described heat exchanger tube, described air vent is located on described vertical wall.So ventilation effect can be ensured, with
When also will not reduce contact area between heat exchanger tube and fin, do not interfere with heat exchanger tube and conduct heat to fin.
According to the refrigerator of one aspect of the invention, including the micro-channel heat exchanger according to the above embodiment of the present invention.
Refrigerator according to embodiments of the present invention, by arranging above-mentioned micro-channel heat exchanger, is conducive to microchannel during defrost to change
On hot device, defrosting water drains, and prevents micro-channel heat exchanger surface from producing stupid ice and affecting heat exchange efficiency.
Wind cooling refrigerator according to a further aspect of the present invention, limits refrigeration compartment and air channel, institute in described wind cooling refrigerator
State air channel and have for the return air inlet from described refrigeration compartment air intake, described wind cooling refrigerator is included according to the present invention is above-mentioned
Fin includes the first fin section and the micro-channel heat exchanger described in all embodiments of the second fin section, described micro-channel heat exchanger
It is located in described air channel, described two headers are vertically arranged, the described second fin section of described fin is arranged on described return air
The top of mouth.
Wind cooling refrigerator according to embodiments of the present invention, by arranging above-mentioned micro-channel heat exchanger, increases the distribution of frost layer
Space, reduces fin bottom portion frost layer accumulated amount and speed, reduces the performance impact to micro-channel heat exchanger for the frosting, prolongationization
The white cycle.
Specifically, the 1.1- of the horizontal width of the described second fin section generally horizontal width of described return air inlet accordingly
1.4 again.So, fin can be made to avoid return air inlet as far as possible, facilitate return air to blow to micro-channel heat exchanger.
The additional aspect of the present invention and advantage will be set forth in part in the description, and partly will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description
The above-mentioned and/or additional aspect of the present invention and advantage will become from reference to the description to embodiment for the accompanying drawings below
Substantially and easy to understand, wherein：
Fig. 1 is the axonometric chart of micro-channel heat exchanger according to embodiments of the present invention.
Fig. 2 is the top view of micro-channel heat exchanger according to embodiments of the present invention.
Fig. 3 is the axonometric chart of fin according to an embodiment of the invention.
Fig. 4 is micro-channel heat exchanger sectional view according to embodiments of the present invention.
Reference：
Micro-channel heat exchanger 100,
Header 1,
Heat exchanger tube 2, tube layer 20, pipeline section 21, flat segments 211, bending section 212,
Fin 3, the first fin section 31, the second fin section 32, air vent 33, the first air vent 331, the second air vent 332,
Parallel walls 301, vertical wall 302.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein from start to finish
The element that same or similar label represents same or similar element or has same or like function.Below with reference to attached
The embodiment of figure description is exemplary it is intended to be used for explaining the present invention, and is not considered as limiting the invention.
Below with reference to Fig. 1-Fig. 4, micro-channel heat exchanger 100 according to embodiments of the present invention is described.
Micro-channel heat exchanger 100 according to embodiments of the present invention, as depicted in figs. 1 and 2, micro-channel heat exchanger 100 includes：
Two headers 1, multiple heat exchanger tube 2 and at least one fin 3, two headers 1 be arranged in parallel.The two ends of multiple heat exchanger tubes 2
Connect two headers 1 respectively, (direction shown in arrow P in Fig. 1) is bent to form multiple pipes to multiple heat exchanger tubes 2 along its length
Layer 20.
Specifically, two headers 1 are arranged at distances from one another, and multiple heat exchanger tubes 2 are bent to form at least two-layer tube layer 20, each
Heat exchanger tube 2 is bent to form one or more pipeline section 21, (square shown in arrow M in Fig. 1 in the bearing of trend parallel to header 1
To) on, one or more pipeline section 21 in the same plane constitutes a tube layer 20.Alternatively, multiple heat exchanger tube 2 is along arrow
The bearing of trend parallel interval setting of the header 1 shown in head M.In the example illustrated in figure 1, multiple pipeline sections of each heat exchanger tube 2
21 all include flat segments 211 and the bending section 212 being located between flat segments 211, and bending section 212 is around prolonging parallel to header 1
Stretch direction (direction shown in arrow M) and bend predetermined angular with respect to flat segments 211.The angle of bend of each bending section 212 in FIG
Degree is 180 degree, the equal length of multiple heat exchanger tubes 2, and the number of times of multiple heat exchanger tube 2 bendings is equal, after multiple heat exchanger tube 2 bendings
The equal length of the flat segments 211 being formed, the length of the bending section 212 of formation is also equal.Multiple heat exchanger tubes 2 positioned at same row
Multiple flat segments 211 constitute a tube layer 20, when the tube layer 20 of a certain layer is connected with fin 3, fin 3 can be connected to this
In the flat segments 211 of heat exchanger tube 2 in tube layer 20.
Alternatively, the cross-sectional profiles of heat exchanger tube 2 be two circular arc middle straight line track type, wherein, heat exchanger tube 2 straight
Side section is paralleled with the bearing of trend (direction shown in arrow M) of header 1, and fin 3 is connected with the straight section of heat exchanger tube 2.For side
Just describe, size on the bearing of trend (direction shown in arrow M) of header 1 for the heat exchanger tube 2 is called the width of heat exchanger tube 2, claim
Heat exchanger tube 2 is in the width (direction shown in arrow M) perpendicular to heat exchanger tube 2 and length direction (the arrow perpendicular to heat exchanger tube 2
Direction shown in P) on size be heat exchanger tube 2 thickness, the thickness direction of heat exchanger tube 2 is direction shown in arrow Q in Fig. 1.In Fig. 1
In, the width of heat exchanger tube 2 is more than the thickness of heat exchanger tube 2.
Specifically, each fin 3 is located between two neighboring tube layer 20 or is located at the outside of outermost tube layer 20, this
In, fin 3 can be one or more.In a specific example of the present invention, as shown in figure 1, fin 3 is multiple, every phase
It is provided with a fin 3, the outside of outermost tube layer 20 is also respectively equipped with multiple tube layer 20 between two adjacent tube layer 20
Fin 3.The heat exchanger that micro-channel heat exchanger 100 is enumerated for multilamellar, heat exchanger is coupled together by each layer tube layer 20 of fin 3.
Specifically, in bearing of trend (direction shown in arrow P) each corrugated extension of fin 3 upper of heat exchanger tube 2, in collection
The bearing of trend (direction shown in arrow M) of flow tube 1 each fin 3 upper continuously extends, and the tube layer 20 that each fin 3 is located with it
In at least two heat exchanger tubes 2 be connected.That is, fin 3 is corrugated on the length direction of heat exchanger tube 2, fin 3 is changing
Continuously arrange on the width of heat pipe 2.It is in continuous setting on the width of heat exchanger tube 2 referred to herein as fin 3, refer to
On the width of heat exchanger tube, fin do not separate into multistage after interval setting that is to say, that fin is not on direction shown in M
Interruption.
It is understood that the fin of most of micro-channel heat exchanger is all short and small fin in prior art, fin is located at
Between two neighboring heat exchanger tube, finned length is little, gap is also little, processed complex, makees frost layer accumulation when vaporizer uses under low temperature
Speed is fast, and on fin during defrost, moisture is dispersed on each little fin, steam be not easy to be accumulated into drip drippage, difficulty drains.
And passing through in the embodiment of the present invention is in continuous by fin 3 on the width (direction shown in arrow M) of heat exchanger tube 2
Setting, the not only processing of fin 3 is simplified, for example, can be processed into fin by whole piece slide plate, processing cost is low, easily fills
Join, and the steam on the fin 3 in defrost is easily gathered into and drips and easily drain along the landing of continuous fin 3, it is to avoid frost layer
Form stupid ice on micro-channel heat exchanger 100 surface, thus ensureing the heat transfer effect of micro-channel heat exchanger 100.
In addition, fin 3 is at least connected with two heat exchanger tubes 2 on the width of heat exchanger tube 2, with fin by multiple heat exchange
Pipe 2 links together it is ensured that the structural strength of micro-channel heat exchanger 100.
Alternatively, in the tube layer 20 that each fin 3 is all located with it, all heat exchanger tubes 2 are connected, the heat exchange being connected with fin 3
Pipe 2 can be linked into an integrated entity by fin 3, and sound construction is reliable.
In FIG, micro-channel heat exchanger 100 includes three heat exchanger tubes 2, forms four comb layers after three heat exchanger tube 2 bendings
20, this four combs layer 20 is linked together by three fins 3 between four comb layers 20, adjacent fin 3 in every comb layer 20
Together with being both connected to three heat exchanger tubes 2, also it is respectively equipped with a fin 3 positioned at the outside of outermost two tube layer 20.This
In distribution is spaced apart along direction shown in arrow Q due to tube layer 20, the outermost outer layer of therefore tube layer 20 refers to multiple tube layer 20 and exists
Outermost along direction shown in Q.
With reference to Fig. 1, fin 3 is provided with air vent 33, and so, the air being blown into can be passed through after fin 3 by air vent 33
It is blown between heat exchanger tube 2.So, air can be mutually mixed after flowing through outermost heat exchanger tube 2 or fin 3, a side
Face leads to top not have air circulation after can solving the problems, such as to be blocked by frost layer because of some fin bottom portion gaps, on the other hand logical
Cross the air mixing flowing through heat exchanger diverse location so that wind pushing temperature uniformly, is favorably improved case temperature uniformity.
Micro-channel heat exchanger 100 according to embodiments of the present invention, by adjacent tube layer 20 or outermost tube layer 20
Outside setting fin 3, each corrugated extension of fin 3 on the bearing of trend of heat exchanger tube 2, in the bearing of trend of header 1
Each fin 3 upper continuously extends, thus micro-channel heat exchanger 100 is during defrosting, fin 3 surface frosted water can be accumulated into water
Drip, water droplet can along the swimmingly landing draining of continuous fin 3, solve fin 3 surface hang that the water yield is larger, asking of cannot draining
Topic, can prevent micro-channel heat exchanger 100 surface from producing stupid ice and affecting heat exchange efficiency.In addition, by setting ventilation on fin 3
Hole 33, promotes fin various location air mutually to flow, and prevents other regions that fin local gap is led to by frost layer blocking
There is no air circulation, thus increasing the overall heat exchange amount of heat exchanger.
In certain embodiments, air vent 33 is located at the sky between the two neighboring flat tube of correspondence 2 of fin 3 place tube layer 20
At gap.So pass through air vent 33 and the space of same tube layer 20 not only can be connected the sky moreover it is possible to by different tube layer 20
Between connection get up, so that the air of heat exchanger diverse location is sufficiently mixed further so that wind pushing temperature is more uniform.
Specifically, as shown in figure 4, size a of the upper air vent 33 of bearing of trend (direction shown in arrow M) in header 1
For 15-18 millimeter, on the bearing of trend perpendicular to header 1, size b of air vent 33 is 4-7 millimeter.
As in Fig. 4 air vent 33 be square opening, length a of air vent 33 between 15-18 millimeter, the width of air vent 33
B is between 4-7 millimeter.Certainly, air vent 33 also can form other shapes, and air vent 33 may be designed as other sizes.
Specifically, as shown in figure 1, air vent 33 includes the first air vent 331 and the second air vent 332, the first air vent
331 is looping pit, and the second air vent 332 opens wide towards the side in direction shown in M.
In certain embodiments, as shown in figure 1, on the bearing of trend (direction shown in arrow P in Fig. 1) of heat exchanger tube 2, often
Individual fin 3 all includes the parallel walls 301 being cross-linked and vertical wall 302 to form zigzag, parallel walls 301 and heat exchanger tube 2
Bearing of trend is parallel, and vertical wall 302 is perpendicular with the bearing of trend of heat exchanger tube 2.That is, parallel walls 301 are prolonged along direction P
Stretch, vertical wall 302 extends along direction Q.When fin 3 is located between two neighboring tube layer 20, parallel walls 301 are connected to tube layer 20
On, vertical wall 302 is clipped between two tube layer 20.Now, air vent 33 can be located on vertical wall 302, so can ensure to lead to
Wind effect, also will not reduce the contact area between heat exchanger tube 2 and fin 3 simultaneously, not interfere with heat exchanger tube 2 and conduct heat to fin 3.
Air vent 33 may be provided at the discontiguous position with heat exchanger tube 2 of fin 3, here to the structure of air vent 33,
Position is not restricted.For example, when the outside of outermost layer tube layer 20 is provided with fin 3, on this fin 3, air vent 33 may be provided in vertically
On wall 302, may be alternatively provided in the discontiguous parallel walls 301 with tube layer 20.
In certain embodiments, as shown in figure 3, each fin 3 all includes the first fin section 31 and the second fin section 32,
Size h1 of the upper first fin section 31 of bearing of trend (direction shown in arrow M) of header 1 is more than the size of the second fin section 32
h2.Here fin 3 is arranged and length must be had to have short, be equivalent to and jagged, the second fin section 32 to the first fin is formed on fin 3
The short parts of section 31 constitute above-mentioned breach, the setting of breach be micro-channel heat exchanger 100 be directed to frosting and defrost feature carry out excellent
The design structure changed.
Specifically, when micro-channel heat exchanger 100 is used for exporting cold, air can be from corresponding micro-channel heat exchanger 100
This indentation, there blow to micro-channel heat exchanger 100.Reduce because air absorbs humidity after cold, the steam of in the air easily condenses
Form frost layer on the surface of micro-channel heat exchanger 100.And air, after indentation, there blowing, does not have the stop of fin 3 in indentation, there,
Air can easily be blown between the inner tube layer 20 of micro-channel heat exchanger 100, increase the distribution space of frost layer, reduce wing
Piece 3 bottom frost layer accumulated amount and speed, reduce the performance impact to micro-channel heat exchanger 100 for the frosting, extend the defrost cycle.
Specifically, as shown in figure 3, each fin 3 all includes at least two first fin sections 31 and/or at least two second
Fin section 32, on the bearing of trend (direction shown in arrow P) of heat exchanger tube 2, the first fin section 31 and the second fin section 32 are interlocked
Setting.So arrange, on the one hand avoid fin 3 structural strength to reduce, on the other hand breach on fin is spaced apart, is conducive to micro-
Channel heat exchanger 100 frost layer dispersion in frosting, thus can more quickly remove frost during defrost.
Further, when fin 3 is multiple, on multiple fins 3, the second fin section 32 is correspondingly arranged.That is, working as
When fin 3 is multiple, in the plane that tube layer 20 is located, the projection of shape of multiple fins 3 is substantially the same, and each fin 3 all exists
Form breach at same position.The gap position of so multiple fins 3 is consistent, thus improving changing of micro-channel heat exchanger 100
The distribution space of frost layer while the thermal efficiency, can be increased further, reduce fin 3 bottom frost layer accumulated amount and speed.
Alternatively, as shown in figure 3, on the bearing of trend (direction shown in arrow M) of header 1, the second fin section 32
Size h2 be size h1 of the first fin section 31 0.67-0.75 that is to say, that on the bearing of trend of header 1 second wing
The short 1/4-1/3 of fragment 32 to the first fin section 31.
If it is understood that the second fin section 32 is too short, it will weaken fin 3 at the second fin section 32 and tube layer
2 bonding strength, and if the second fin section 32 is long, air can be formed again and hinder, the preferably second fin after considering
Size h2 of section 32 is the 0.67-0.75 of size h1 of the first fin section 31 it is ensured that fin 3 all can smooth dischargeization in full section
White water, ensures that during air intake, frost layer can be uniformly distributed simultaneously.
Specifically, all in the tube layer 20 that in each fin 3, first fin section 31 and the second fin section 32 are all located with it
Heat exchanger tube 2 is connected.
Due to being spaced apart between two neighboring heat exchanger tube 2, after all heat exchanger tubes 2 being connected by fin 3, on fin 3
Defrosting water will not fall centre heat exchanger tube 2 on, micro-channel heat exchanger 100 easily drains defrosting water.
Specifically, as shown in figure 4, on the bearing of trend (direction shown in arrow M) along header 1, the second fin section 32
Windward side and its tube layer 20 of being located on contact size m between outermost heat exchanger tube 2 be 5-10 millimeter.That is,
Even if fin 3 has been cooked breach setting, fin 3 is still formed between outermost heat exchanger tube 2 and is connected and joins in the part of gap edge
Close.
Contact size m second fin section 32 being designed between windward side and outermost heat exchanger tube 2 is 5-10 millimeter,
Ensure that it is connected with outermost heat exchanger tube 2, on fin 3 when preventing fin 3 hanging, water droplet is unable to following current and changes to outermost
On heat pipe 2.
In certain embodiments, the tube layer 20 of micro-channel heat exchanger 100 is vertically arranged, and multiple tube layer 20 are in the horizontal direction
Spaced relation.The corrugated extension in the horizontal direction of each fin 3, each fin 3 vertically continuously extends.Fin 3 is upper
Hold level with both hands neat, fin 3 forms breach in lower end, fin 3 is divided into the first fin section 31 and the second fin section 32, wherein, the second fin
Contact height m between section 32 and the heat exchanger tube 2 of bottom is 5-10mm, shape between the heat exchanger tube 2 of fin 3 and bottom at this
Become interference fit.
Further, as shown in figure 1, on the bearing of trend (direction shown in arrow P) of heat exchanger tube 2, each fin 3 is in all
Zigzag extends, as shown in figure 3, the gap n between adjacent teeth is 5-10 millimeter.Wherein, the basic phase of inter-lobe clearance n of fin 3
With the ratio of the inter-lobe clearance n of each fin 3 is between 110%-90%.
To sum up, micro-channel heat exchanger 100 according to embodiments of the present invention, is carried out according to frosting on heat exchanger and defrost feature
Optimize, by running through the fin 3 of multilamellar tube layer 20, fin 3 length difference alienation and in fin 3 surface perforate, reduce parallel
The sensitivity that stream heat exchanger heat exchange amount is gathered to surface frost layer, slow down the shadow to system operation for the heat exchanger surface frost layer accumulation
Ring, be conducive to defrosting water to drain simultaneously, extend the defrost cycle as far as possible, lift heat exchange property.
Refrigerator (not shown) according to one aspect of the invention, changes including microchannel according to the above embodiment of the present invention
Hot device 100.Alternatively, micro-channel heat exchanger 100 can be used as the cold room of refrigerator or the vaporizer of temperature-changing chamber, Thermal Performance of Micro Channels
The structure of device 100 is illustrated by above-described embodiment, repeats no more here.
Refrigerator according to embodiments of the present invention, by arranging above-mentioned micro-channel heat exchanger 100, is conducive to microchannel during defrost
On heat exchanger 100, defrosting water drains, and prevents micro-channel heat exchanger 100 surface from producing stupid ice and affecting heat exchange efficiency.
Wind cooling refrigerator (not shown) according to a further aspect of the present invention, limits refrigeration compartment and wind in wind cooling refrigerator
Road, air channel has for the return air inlet from refrigeration compartment air intake, and wind cooling refrigerator includes including according to the above-mentioned fin of the present invention 3
The micro-channel heat exchanger 100 of all embodiments of one fin section 31 and the second fin section 32.
The structure of micro-channel heat exchanger 100 is illustrated by above-described embodiment, repeats no more here.Micro-channel heat exchanger 100
Can be used as the cold room of wind cooling refrigerator or the vaporizer of temperature-changing chamber, micro-channel heat exchanger 100 is located in air channel, Thermal Performance of Micro Channels
Device 100 can arrange the second shorter fin section 32 above the return air inlet of cold room or temperature-changing chamber, and other positions arrangement is longer
The first fin section 31.
Specifically, micro-channel heat exchanger 100 in air channel, two headers 1 are vertically arranged, the second fin section of fin 3
32 tops being arranged on return air inlet.That is in refrigeration, refrigeration chamber air blows to air channel from return air inlet to wind cooling refrigerator,
The wind being blown into is blown into micro-channel heat exchanger 100 from the bottom of micro-channel heat exchanger 100.
Fin 3 is equivalent to breach in the short part of the second fin section 32 to the first fin section 31, and air can be micro- logical from correspondence
This indentation, there of road heat exchanger 100 blows to micro-channel heat exchanger 100.After air absorbs cold, humidity reduces, the steam of in the air
The surface easily condensing in micro-channel heat exchanger 100 forms frost layer.Because air blows to micro-channel heat exchanger 100 from indentation, there,
After indentation, there does not have the stop of fin 3, air can easily be blown between the inner tube layer 20 of micro-channel heat exchanger 100, increases
The big distribution space of frost layer, reduces fin 3 bottom frost layer accumulated amount and speed, reduces frosting to micro-channel heat exchanger
100 performance impact, extends the defrost cycle.
Specifically, horizontal width w (indicating in Fig. 3) the generally horizontal width of return air inlet of the second fin section 32
1.1-1.4 times, so, fin 3 can be made to avoid return air inlet as far as possible, facilitate return air to blow to the inside of micro-channel heat exchanger 100.
Further, when the outermost tube layer 20 of micro-channel heat exchanger 100 is provided with fin 3, micro-channel heat exchanger
The directly no backplate protection outside naked leakage, and fin 3 of 100 outermost fins 3.That is, outermost fin 3 not with other
Part is connected, and does not have protective equipment, is contacted with the case courage of refrigeration compartment and the cover plate of heat exchanger with reducing it, reduces casing leakage
Cold and the possibility of heat exchanger lid surface frosting.
Wind cooling refrigerator according to embodiments of the present invention, is changed exclusively for the microchannel of single cycle wind cooling refrigerator design by setting
Hot device, has the characteristics that：
1. using whole piece plain fin, heat exchanger tube tube layer parallel for 3-4 layer is connected to one piece, reduces wing during defrost
Piece surface hangs the water yield, prevents heat exchanger surface from forming " stupid ice "；
2. adjacent two sections of fin Length Ratios are between 75%-67%, it is possible to increase exchanger base windward side fin clearance,
Reduce the impact to refrigerator air output and wind pushing temperature for the frost layer accumulation, extend the defrost time；
3., by shortening finned length above cold room and temperature-changing chamber return air inlet, reduce away from return air inlet the most nearby frost layer accumulation
Speed, reduces the impact to cold room and temperature-changing chamber for the frost layer accumulation, extends the defrost time；
4. fin 3 lower limb stretches into or stretches out the heat exchanger tube 5-10mm closing on, and is easy to defrosting water to dirty, prevents water droplet
In fin end portion accumulation；
5. the fin 3 surface perforate between adjacent two layers heat exchanger tube 2 is so that air can be prevented because of frost layer with horizontal mobility
Blocking bottom fin gap leads to top not have air to flow through fin 3, reduces frosting heat exchanger heat exchange impact；
6. both sides fin 3 directly naked leakage, unprotected layer, reinforcing plate or gripper shoe, are reduced protective layer and are contacted with case courage
The cold draining bringing and heat exchanger cover plate frosting may；
7. this design solves micro-channel heat exchanger 100 and uses evaporator heat exchange effect present in wind cooling refrigerator to table
Face frosting degree increase more sensitive issue, gives full play to parallel-flow heat exchanger feature, increases refrigerator plot ratio.
It is appreciated that in refrigerator, be additionally provided with the part of other refrigeration systems such as compressor, condenser etc., refrigerant system configurations
And operation principle has been prior art, in addition attachment structure in the refrigeration system of refrigerator for the micro-channel heat exchanger 100 is also
Prior art, repeats no more here.
In describing the invention it is to be understood that term " " center ", " longitudinal ", " horizontal ", " length ", " width ",
" thickness ", " highly ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outward "
Be based on orientation shown in the drawings or position relationship in the orientation of instruction or position relationship, be for only for ease of description the present invention and
Simplify description, rather than the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration
And operation, therefore it is not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In describing the invention, unless otherwise stated, " multiple " are meant that two
Individual or two or more.
In describing the invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ",
" fixation " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be machinery
Connect or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be two elements
Internal connection or the interaction relationship of two elements.For the ordinary skill in the art, can be with concrete condition
Understand above-mentioned term concrete meaning in the present invention.
In the description of this specification, the description of reference term " embodiment ", " example " etc. mean with reference to this embodiment or
The specific features of example description, structure, material or feature are contained at least one embodiment or the example of the present invention.At this
In description, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.And, description concrete
Feature, structure, material or feature can combine in any one or more embodiments or example in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
Multiple changes, modification, replacement and modification can be carried out to these embodiments in the case of the principle of the disengaging present invention and objective, this
The scope of invention is limited by claim and its equivalent.
Claims (11)
1. a kind of micro-channel heat exchanger is it is characterised in that include：
Two headers, described two headers be arranged in parallel；
Multiple heat exchanger tubes, the two ends of the plurality of heat exchanger tube connect described two headers respectively, and the plurality of heat exchanger tube is along it
Length direction is bent to form multiple tube layer；
At least one fin, each described fin is located between two neighboring described tube layer or is located at outermost described tube layer
Outside, the corrugated extension of each described fin on the bearing of trend of described heat exchanger tube, in the bearing of trend of described header
Each described fin upper continuously extends, and the heat exchanger tube described at least two in the described tube layer that is located with it of each described fin
It is connected, described fin is provided with air vent.
2. micro-channel heat exchanger according to claim 1 is it is characterised in that at least one described fin includes the first fin
Section and the second fin section, on the bearing of trend of described header, the size of described first fin section is more than described second fin section
Size.
3. micro-channel heat exchanger according to claim 2 is it is characterised in that on the bearing of trend of described header, institute
State the second fin section size be described first fin section size 0.67-0.75.
4. micro-channel heat exchanger according to claim 2 is it is characterised in that the first fin section described in each described fin
In the described tube layer that it is located with described second fin Duan Junyu, all described heat exchanger tubes are connected.
5. micro-channel heat exchanger according to claim 2 is it is characterised in that on the bearing of trend along described header,
In the windward side of described second fin section and its described tube layer of being located, the contact size between outermost described heat exchanger tube is
5-10 millimeter.
6. the micro-channel heat exchanger according to any one of claim 1-5 it is characterised in that described air vent be located at described
Gap between the two neighboring described flat tube of described tube layer that fin is located.
7. the micro-channel heat exchanger according to any one of claim 1-5 is it is characterised in that extension in described header
On direction, the size of described air vent is 15-18 millimeter, described air vent on the bearing of trend perpendicular to described header
A size of 4-7 millimeter.
8. the micro-channel heat exchanger according to any one of claim 1-5 is it is characterised in that extension in described heat exchanger tube
On direction, each described fin all includes the parallel walls being cross-linked and vertical wall to form zigzag, described parallel walls and institute
The bearing of trend stating heat exchanger tube is parallel, and described vertical wall is perpendicular with the bearing of trend of described heat exchanger tube, and described air vent sets
On described vertical wall.
9. a kind of refrigerator is it is characterised in that include the micro-channel heat exchanger according to any one of claim 1-8.
10. a kind of wind cooling refrigerator, limits refrigeration compartment and air channel in described wind cooling refrigerator, described air channel has for from described
The return air inlet of refrigeration compartment air intake is it is characterised in that described wind cooling refrigerator is included according to any one of claim 2-5
Micro-channel heat exchanger, described micro-channel heat exchanger is located in described air channel, and described two headers are vertically arranged, described fin
Described second fin section is arranged on the top of described return air inlet.
11. wind cooling refrigerators according to claim 10 it is characterised in that the horizontal width of described second fin section generally
1.1-1.4 times of the horizontal width of described return air inlet accordingly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610795115.3A CN106403389A (en) | 2016-08-31 | 2016-08-31 | Micro-channel heat exchanger, refrigerator and air-cooled refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610795115.3A CN106403389A (en) | 2016-08-31 | 2016-08-31 | Micro-channel heat exchanger, refrigerator and air-cooled refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106403389A true CN106403389A (en) | 2017-02-15 |
Family
ID=58001204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610795115.3A Pending CN106403389A (en) | 2016-08-31 | 2016-08-31 | Micro-channel heat exchanger, refrigerator and air-cooled refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106403389A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819673A (en) * | 2021-09-28 | 2021-12-21 | 澳柯玛股份有限公司 | Variable flow reversing defrosting system and method for refrigerator and freezer |
| CN114479656A (en) * | 2020-11-11 | 2022-05-13 | 杭州三花研究院有限公司 | Coating, preparation method of coating, heat exchanger containing coating and preparation method of heat exchanger |
| CN114479656B (en) * | 2020-11-11 | 2024-05-03 | 杭州三花研究院有限公司 | Heat exchanger and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353224A (en) * | 1980-10-16 | 1982-10-12 | Nippondenso Co., Ltd. | Evaporator |
| JP2005055108A (en) * | 2003-08-06 | 2005-03-03 | Matsushita Electric Ind Co Ltd | Heat exchanger |
| CN101050906A (en) * | 2006-04-06 | 2007-10-10 | 海尔集团公司 | Circulation air path of air cooling type refrigerator |
| CN101738126A (en) * | 2009-12-14 | 2010-06-16 | 三花丹佛斯（杭州）微通道换热器有限公司 | Heat exchanger and fin thereof |
| CN101769656A (en) * | 2009-02-05 | 2010-07-07 | 浙江康盛股份有限公司 | Coiled parallel flow condenser for refrigerator |
| CN201945092U (en) * | 2011-03-21 | 2011-08-24 | 珠海格力电器股份有限公司 | Heat exchanger |
| CN204438875U (en) * | 2015-01-04 | 2015-07-01 | 杭州三花微通道换热器有限公司 | Fin and the heat exchanger with it |
-
2016
- 2016-08-31 CN CN201610795115.3A patent/CN106403389A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353224A (en) * | 1980-10-16 | 1982-10-12 | Nippondenso Co., Ltd. | Evaporator |
| JP2005055108A (en) * | 2003-08-06 | 2005-03-03 | Matsushita Electric Ind Co Ltd | Heat exchanger |
| CN101050906A (en) * | 2006-04-06 | 2007-10-10 | 海尔集团公司 | Circulation air path of air cooling type refrigerator |
| CN101769656A (en) * | 2009-02-05 | 2010-07-07 | 浙江康盛股份有限公司 | Coiled parallel flow condenser for refrigerator |
| CN101738126A (en) * | 2009-12-14 | 2010-06-16 | 三花丹佛斯（杭州）微通道换热器有限公司 | Heat exchanger and fin thereof |
| CN201945092U (en) * | 2011-03-21 | 2011-08-24 | 珠海格力电器股份有限公司 | Heat exchanger |
| CN204438875U (en) * | 2015-01-04 | 2015-07-01 | 杭州三花微通道换热器有限公司 | Fin and the heat exchanger with it |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114479656A (en) * | 2020-11-11 | 2022-05-13 | 杭州三花研究院有限公司 | Coating, preparation method of coating, heat exchanger containing coating and preparation method of heat exchanger |
| WO2022100361A1 (en) * | 2020-11-11 | 2022-05-19 | 杭州三花研究院有限公司 | Coating and preparation method therefor, heat exchanger, and processing method for heat exchanger |
| CN114479656B (en) * | 2020-11-11 | 2024-05-03 | 杭州三花研究院有限公司 | Heat exchanger and preparation method thereof |
| CN113819673A (en) * | 2021-09-28 | 2021-12-21 | 澳柯玛股份有限公司 | Variable flow reversing defrosting system and method for refrigerator and freezer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106322850A (en) | Microchannel heat exchanger, refrigerator and air-cooled refrigerator | |
| CN106288526A (en) | Micro-channel heat exchanger and refrigerator, wind cooling refrigerator | |
| JP6165360B2 (en) | Heat exchanger and air conditioner | |
| WO2019239446A1 (en) | Air conditioner outdoor unit and air conditioner | |
| US20130220584A1 (en) | Heat exchanger, and all-in-one air conditioner equipped therewith | |
| EP3156752B1 (en) | Heat exchanger | |
| US20110120177A1 (en) | Heat exchanger for shedding water | |
| CN207816049U (en) | A kind of micro-channel heat exchanger and air-conditioning | |
| JP2015017738A (en) | Heat exchanger | |
| CN106288525A (en) | Micro-channel heat exchanger and refrigerator, wind cooling refrigerator | |
| CN106403389A (en) | Micro-channel heat exchanger, refrigerator and air-cooled refrigerator | |
| EP3608618B1 (en) | Heat exchanger and refrigeration cycle device | |
| CN106403388A (en) | Micro-channel heat exchanger, refrigerator and air-cooled refrigerator | |
| WO2018040037A1 (en) | Micro-channel heat exchanger and air-cooled refrigerator | |
| WO2018040036A1 (en) | Micro-channel heat exchanger and air-cooled refrigerator | |
| CN106403643A (en) | Microchannel heat exchanger, refrigerator and air-cooled refrigerator | |
| CN107860248A (en) | A kind of micro-channel heat exchanger and air-conditioning | |
| JP4995308B2 (en) | Air conditioner indoor unit | |
| JP2010107130A (en) | Heat exchanger unit and indoor unit of air conditioner using the same | |
| JP5404571B2 (en) | Heat exchanger and equipment | |
| JP2010091145A (en) | Heat exchanger | |
| JPH04238719A (en) | Cleaning unit | |
| JP4212780B2 (en) | Heat exchanger tube for heat exchanger, manufacturing method thereof, heat exchanger and refrigeration air conditioner using the same | |
| WO2018040035A1 (en) | Micro-channel heat exchanger and air-cooled refrigerator | |
| WO2018040034A1 (en) | Micro-channel heat exchanger and air-cooled refrigerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170215 |
|
| RJ01 | Rejection of invention patent application after publication |