CN104422199A - Micro-channel heat exchanger - Google Patents
Micro-channel heat exchanger Download PDFInfo
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- CN104422199A CN104422199A CN201310389432.1A CN201310389432A CN104422199A CN 104422199 A CN104422199 A CN 104422199A CN 201310389432 A CN201310389432 A CN 201310389432A CN 104422199 A CN104422199 A CN 104422199A
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- Prior art keywords
- cavity
- header
- dividing plate
- partition member
- opening
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- 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
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- 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
- F25B2500/05—Cost reduction
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a micro-channel heat exchanger. The micro-channel heat exchanger comprises a first header pipe, the first header pipe comprises a header pipe body and is provided with the separating parts extending along the header pipe body in longitudinal direction, the separating part comprises a main clapboard and an assistant clapboard, the main clapboard divides the header pipe body into the first cavity and the second cavity; the assistant clapboard divides the second cavity into at least two circulation cavities independently extending along the longitudinal direction; a shunting hole is opened in the main clapboard of the separating part between the first cavity and at least one circulation cavity for connecting the circulation cavity with the first cavity; according to the micro-channel heat exchanger, the refrigerating fluid can be more uniformly distributed along the length direction of the first header pipe due to that the separating parts are formed at the first header pipe, the refrigerating fluid can be more uniformly distributed in the flat pipe for raising the heat exchanging efficiency of the heat exchanger; the structure is simple and the manufacturing cost is reduced while the shunting pipe is saved.
Description
Technical field
The present invention relates to a kind of heat-exchange device, particularly relate to a kind of micro-channel heat exchanger.
Background technology
Micro-channel heat exchanger is formed primarily of two headers, the flat tube being communicated with two headers and the fin be located between flat tube, and described flat tube is provided with the microchannel passed through for cold-producing medium.Its operation principle is: cold-producing medium enters in described header by the entrance point of described header, then enters in micro-channel flat via header, with the air generation heat exchange in the external world in the process of flat Bottomhole pressure, thus realizes refrigeration or heats.In ideal conditions, cold-producing medium should be assigned in the microchannel of each flat tube uniformly, to ensure the best heat exchange efficiency of heat exchanger.But in actual use, described header generally elongate shape, cold-producing medium is owing to being subject to the drag effects in described header, the flow of the cold-producing medium of header arrival end and far-end is made to differ larger, this cold-producing medium flows uneven in header, the distribution of cold-producing medium in flat tube can be aggravated uneven, and then affect the heat exchange efficiency of micro-channel heat exchanger.
Therefore, be necessary to improve existing technology, to solve above technical problem.
Summary of the invention
The object of the present invention is to provide a kind of structure simple, cold-producing medium can be more even at header lengths directional spreding, thus distribute to the cold-producing medium made in flat tube evenly, to improve the micro-channel heat exchanger of heat exchange efficiency.
For achieving the above object, the present invention adopts following technical scheme: a kind of micro-channel heat exchanger, comprises the first header, the second header, is communicated with the flat tube of described first header and described second header, and the fin between adjacent flat tube; Described first header comprises header body, passes in and out the opening of described first header for cold-producing medium, described header body is provided with some flat pipe holes, described first header is provided with along described header body partition member extending longitudinally, described partition member comprises main dividing plate and secondary dividing plate, described header body is divided into the first cavity and the second cavity by described main dividing plate, and described main dividing plate is provided with at least one component discharge orifice; First cavity is arranged near flat tube side, and the end of one end of described flat tube is stretched in described first cavity; Second cavity is divided at least two relatively independent flowing lumens extended longitudinally by secondary dividing plate, described first cavity with on the main dividing plate of the partition member separated, be provided with tap hole between at least one flowing lumen be communicated with this flowing lumen and the first cavity.
Described first header is also provided with second partition, and described first cavity to be divided at least two relatively independent distributor chambers at longitudinal direction by described second partition, and each distributor chamber respectively has one group of flat tube to be connected; And wherein having at least a distributor chamber not directly to be communicated with opening, this distributor chamber to be communicated with flowing lumen by tap hole that main dividing plate is arranged thus to be communicated with opening.
Described opening is positioned at one end of described first header, away from one end relatively far away of one end, described opening position on the main dividing plate that the tap hole that one of them flowing lumen is corresponding is arranged at described partition member, the distributor chamber that this flowing lumen is communicated with directly is not communicated with opening, and this distributor chamber to be communicated with this flowing lumen by tap hole that main dividing plate is arranged thus to be communicated with opening.
Also comprise distribution cavity in described first header, described distribution cavity is arranged on the side that described first header arranges described opening, and described distribution cavity is communicated with described opening and described flowing lumen.
The main dividing plate of described partition member and secondary dividing plate are along the first header platy structure extending longitudinally, described distribution cavity is communicated with described flowing lumen, multicomponent discharge orifice by arranging between each flowing lumen with described first cavity is communicated with, each component discharge orifice along the longitudinally arrangement of described main dividing plate, the group number of tap hole identical with the quantity of flowing lumen or.
Described first cavity and described second cavity are separated by described partition member substantially completely, described opening is not directly communicated with described first cavity, and described opening is communicated with by the described tap hole on the described main dividing plate of described distribution cavity, described flowing lumen and described partition member with described first cavity.
Described first header is provided with the first end cap near arranging opening one end, the inner surface of the first end cap described in the end abutment of described main dividing plate one end, described first cavity and described second cavity are separated by described main dividing plate, the inner surface of described first end cap is at regular intervals apart from described secondary dividing plate, form a distribution cavity, described opening is corresponding with described distribution cavity to be arranged and is directly communicated with.
Described first header is provided with the first end cap in the one end arranging opening, the inner surface of described first end cap is at regular intervals apart from described partition member, form a distribution cavity, an isolated component is also provided with in described first header, the described main dividing plate of described isolated component and described partition member abuts near one end of opening and arranges, and described isolated component isolates described distribution cavity and described first cavity.
Described isolated component is be arranged at the second partition of described main dividing plate near opening one end, the described main dividing plate of described second partition and header body and partition member abuts and arranges, welded seal after assembling, described header body, second partition and the first end cap form described distribution cavity.
The Y-shaped arrangement of described partition member, described partition member comprises crossing main dividing plate and secondary dividing plate, described header body is divided into the first cavity and the second cavity by described partition member, described main dividing plate and described collector pipe body form described first cavity, described first cavity is directly connected with described flat pipe hole, and described first cavity is communicated with by the multicomponent discharge orifice be arranged on described partition member with described second cavity; Described second cavity is two relatively independent flowing lumens by described secondary baffle for separating, and the component discharge orifice that wherein one group of flowing lumen is corresponding is positioned on the described main dividing plate away from described opening one end.
Compared with prior art, micro-channel heat exchanger of the present invention, by arranging partition member in the first header, the cold-producing medium entering into header body from described opening is made to be assigned to multiple relatively independent flowing lumen, the relatively independent circulation of cold-producing medium of each flowing lumen, make described header lengths direction segmentation supply cold-producing medium, the impact that the first header resistance flows in the first header on cold-producing medium can be reduced, make cold-producing medium more even at the first header lengths directional spreding, improve the efficiency of micro-channel heat exchanger; Present invention eliminates isocon simultaneously, and directly realize shunting by dividing plate, avoid the complexity of isocon processing, structure manufacture is relatively simple, can reduce manufacturing cost.
Accompanying drawing explanation
Fig. 1 is micro-channel heat exchanger structural representation of the present invention;
Fig. 2 is the structural representation of the present invention first header;
Fig. 3 is the STRUCTURE DECOMPOSITION schematic diagram of the first header in first embodiment of the invention;
Fig. 4 is the view in transverse section of the first header in first embodiment of the invention;
Fig. 5 is the STRUCTURE DECOMPOSITION schematic diagram of the first header in second embodiment of the invention;
Fig. 6 is the view in transverse section of the first header in second embodiment of the invention;
Fig. 7 is the STRUCTURE DECOMPOSITION schematic diagram of the first header in third embodiment of the invention;
Fig. 8 is the view in transverse section of the first header in third embodiment of the invention;
Fig. 9 is the STRUCTURE DECOMPOSITION schematic diagram of the first header in four embodiment of the invention;
Figure 10 is the view in transverse section of the first header in four embodiment of the invention;
Figure 11 is the structural representation of diversion member 10;
Figure 12 is the view in transverse section of the first header in fifth embodiment of the invention;
Figure 13 is the first header A-A sectional view shown in Fig. 2 in the present invention first to the 5th embodiment;
Figure 14 is the STRUCTURE DECOMPOSITION schematic diagram of the first header in sixth embodiment of the invention;
Figure 15 is the A-A sectional view of the first header as shown in Figure 2 in sixth embodiment of the invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
As shown in Figure 1, present invention is disclosed a kind of micro-channel heat exchanger 100, comprise the first header 1, the second header 2 arranged with the first header 1 parallel, spaced-apart preset distance, be arranged to be communicated with multiple flat tubes 3 of the first header 1 and the second header 2 between the first header 1 and the second header 2, and be arranged between adjacent flat tube 3 to improve the fin 4 of heat exchange efficiency.
The two ends of flat tube 3 are inserted in the first header 1 and the second header 2 respectively, flat tube 3 are provided with multiple microchannels (not shown), are communicated with the first header 1 and the second header 2 by the microchannel of flat tube 3; Flat tube 3 and the first header 1 and the second header 2 are by being welded and fixed and sealing.
As shown in Fig. 2 to Figure 14, first header 1, comprise header body 11 and the first end cap 12 and the second end cap 13 being positioned at header body 11 two ends, and the runner pipe 15 to be fixedly connected with the first end cap 12, second end cap 13 or header body 11, header body 11 and the first end cap 12 and the sealing of the second end cap 13 are arranged.
The tube wall of header body 11 runs through and is provided with some flat pipe holes 14, flat pipe hole 14 corresponds to flat tube 3 along header body 11 longitudinally (left and right directions as shown in Figure 2) arrangement, and the size shape of flat pipe hole 14 matches with flat tube 3 to facilitate the insertion of flat tube 3 to fix and welded seal, header body 11 inside is provided with along header body 11 partition member 16 extending longitudinally, partition member 16 comprises along header body 11 first main dividing plate 162 extending longitudinally, first secondary dividing plate 163, header body is divided into the first cavity 111 be connected with flat tube near flat tube direction by the first main dividing plate 162, not the second cavity 112 being directly connected and being communicated with the first cavity by distribution cavity by tap hole that the first main dividing plate 162 is arranged or part with flat tube, second cavity 112 is divided at least two relatively independent flowing lumen 112a by the first secondary dividing plate 163, here the first secondary dividing plate 163, the quantity of flowing lumen 112a can adjust as required, if the length of header is relatively long, the quantity of the first secondary dividing plate 163 can increase, like this, the quantity of flowing lumen 112a also increases relatively, and the tap hole 161 first main dividing plate corresponding with each flowing lumen 112a is all respectively arranged with for being communicated with the first cavity.Other first header 1 can also comprise second partition 17, the dividing plate installing hole 171 for arranging second partition is also provided with along header body 11, dividing plate installing hole 171 is for installing second partition 17 and carrying out spacing to second partition 17, second partition 17 is stretched into by dividing plate installing hole 171 and installs location and fix with partition member 16, thus makes the first cavity be divided into relatively independent multiple distributor chamber 111a.
Like this, by the partition member 16 arranged in the first header 1, make the cold-producing medium entering into header body 11 from described runner pipe 15 first carry out suitable distribution before arrival second cavity, distribute corresponding cold-producing medium to multiple relatively independent flowing lumen, or have at least some refrigerant first to distribute to multiple relatively independent flowing lumen, then the cold-producing medium of each flowing lumen leads to the first cavity 111 corresponding to this position by the tap hole that the first main dividing plate is arranged, and then distribute in the flat tube 3 that matches with this part first cavity 111, such cold-producing medium is independent circulation in each flowing lumen, make the first header 1 segmentation along its length can supply cold-producing medium, the impact that header resistance flows in the first header 1 on cold-producing medium can be reduced, even from the import distance other one end farthest arranging runner pipe 15, also can by flowing lumen be assigned in requisition for cold-producing medium, make cold-producing medium more even in the first header 1 length direction distribution, improve the efficiency of micro-channel heat exchanger, present invention eliminates distributing pipe simultaneously, and directly realized shunting by partition member 16 and distributed, structure is simple, can reduce manufacturing cost.
In addition, in order to make the distribution of cold-producing medium more even, can also second partition 17 first cavity 111 be set in the first cavity 111, first cavity 111 is divided at least two relatively independent distributor chamber 111a by second partition 17 in a longitudinal direction, like this by the setting of second partition 17, flat tube 3 is also divided at least two groups, each corresponding one group of flat tube of each distributor chamber 111a, and second partition 17 is abutted with partition member 16 and arranges or arranged by welded seal; First cavity 111 of header body 11 is carried out refinement by second partition 17 further, and then is set to multiple flow of refrigerant and leads to range of distribution, improves the uniformity of cold-producing medium along header tube length direction further, improves micro-channel heat exchanger heat exchange efficiency.
On header body 11, corresponding dividing plate installing hole 171 is provided with corresponding to second partition 17, dividing plate installing hole 171 is the long and narrow hole through header body 11 side, size shape and the second partition 17 in hole match, its length slightly larger than the length of described second partition 17, can ensure that second partition 17 can be inserted in described header body 11 from header body 11 outside by dividing plate installing hole 171.
First end cap 12 or the second end cap 13 are provided with the opening (not shown) of cold-producing medium turnover; First header 1 corresponds to described opening and can be provided with runner pipe 15, and runner pipe 15 is contrary from the direction extending longitudinally of the first end cap 12 or the second end cap 13 with described header body 11 from the direction extending longitudinally of the first end cap 12 or the second end cap 13; Cold-producing medium to be come in and gone out described first header 1 by runner pipe 15.In the present invention, the first header 1 is influent stream header, and opening is flow-in hole, and runner pipe 15 is influent stream pipe; Certain opening also can be arranged on header body 11, and described like this runner pipe 15 is also arranged on header body 11, can according to the position of supporting structure choice opening.
In first embodiment of the present invention, as shown in Figure 3 and Figure 4, micro-channel heat exchanger 100, comprises the first header 1, first header and comprises header body 11, first end cap 12, second end cap 13 and runner pipe 15.
As shown in figure 13, header body 11 is combined type, comprise the first body 191 and the second body 192, laterally (fore-and-aft direction as shown in Figure 2) cross section is in roughly arc-shaped for first body 191 and the second body 192, and the first body 191 and the second body 192 form header body 11 by being splicing together; When splicing and combining, the first body 191 is wrapped up by second body 192 or the first body 191 wraps up by the second body 192, and packaging type structure can increase sealing and the compressive resistance of header.In order to carry out spacing to the assembling position of the first body 191 and the second body 192, need wrapped body such as the second body 192 outer surface or and the inner surface of body such as the first body 191 of parcel step is set, this structure is relatively simple, be convenient to processing, good position-limiting action can be played simultaneously, and make the first header have higher resistance to pressure.Certain first body 191 and the second body 192 lateral cross section shape also can be other shapes, such as rectangle, as long as can complete circulation and the sealing of described cold-producing medium after splicing.Adopt combined type collecting pipe body header body can be separated assembling and can improve efficiency of assembling; Certain described header body 11 also can be all-in-one-piece, and the shape in its cross section can be circular, rectangle or ellipse etc.
First body 191 is provided with flat pipe hole 14, and flat pipe hole 14 is along the longitudinally arrangement of the first body 191.
Second body 192 is provided with along the second body 192 partition member 16 extending longitudinally.Space between first main dividing plate 162 of partition member 16 and the first body 191 forms the first cavity 111, space between second body 192 and the first main dividing plate 162 of partition member 16 forms the second cavity 112, second cavity 112 and is separated at least two relatively independent flowing lumen 112a by the secondary dividing plate 163 of partition member 16 again.
Second body 192 and partition member 16 can be that one extrudes or stretch forming, partition member 16 comprises two parts of substantially vertical setting: main dividing plate and secondary dividing plate, main dividing plate is provided with tap hole, secondary baffle for separating and sealing the second cavity 112, form 3 relatively independent flowing lumen 112a, here main dividing plate is arranged roughly in horizontal direction, the substantially vertical setting of secondary dividing plate, here level refers to the direction almost parallel with flat pipe hole arragement direction, and described vertically refers to the direction vertical with horizontal direction; The connecting portion of each parts of usual micro-channel heat exchanger is all by having welded, but welding easily occurs flaw, and sealing is poor, causes product percent of pass low; So the second body 192 and partition member 16 adopt one to extrude or the section bar of drawing and forming in present embodiment, this sampling technology simply, ensure that sealing, product percent of pass can improve.
Tap hole 161 on partition member 16 longitudinally corresponds to flowing lumen 112a along header body 11 and is divided into some groups, and wherein a component discharge orifice 161 is arranged on the main dividing plate 162 away from the partition member 16 of one end of described opening.
First end cap 12 and the second end cap 13 are arranged at header body 11 two ends, first end cap 12 is provided with opening, opening is for cold-producing medium turnover header body 11, the shape of the first end cap 12 and the second end cap 13 matches with the inner surface configuration of header body 11 or has part to match, welded seal is passed through after assembling, partition member 16 is in close opening side, relative to header body 11 indentation certain distance, after first end cap 12 has been assembled, the inner surface separating distance parts of the first end cap have certain spacing, form a distribution cavity 113, make the cold-producing medium entering header body, enter distribution cavity 113, then the flowing lumen 112a of the first cavity 111 and the second cavity 112 is entered.
In second embodiment of the present invention, as shown in Figure 5 and Figure 6, be with the main distinction of the first embodiment: the first cavity and the second cavity are separated by partition member substantially completely, particularly, be the first cavity and the second cavity are separated by main dividing plate, such opening and the first cavity 111 are communicated with by the tap hole 161 on the main dividing plate 162 of the second cavity 112 and partition member 16.
The two ends of the main dividing plate of partition member 16 abut to the first end cap, the second end cap or substantially abut against with the first end cap, the second end cap, and the length of secondary dividing plate 163 is less than the length of main dividing plate 162; Space between partition member 16, header body 11 and the first end cap 12 forms distribution cavity 113; Cold-producing medium enters after header body 11 through runner pipe 15, first distribution cavity 113 is entered, the cold-producing medium of distribution cavity 113 enters relatively independent flowing lumen 112a, the first cavity 111 is entered into by the component discharge orifice 161 corresponding to each flowing lumen 112a, tap hole 161 along the longitudinally arrangement of header body, and then is assigned to the flat tube 3 at corresponding position from the first cavity; Such structure is adopted to make cold-producing medium first through the distribution of the second cavity, be assigned to each flowing lumen 112a relatively uniformly, and then the corresponding tap hole of corresponding header tube length direction subsection setup, even from described opening one end farthest, also corresponding cold-producing medium can be assigned to, cold-producing medium is distributed on the first cavity length direction more even, and then make cold-producing medium distribute more even in the first header lengths direction.
In 3rd embodiment of the present invention, as shown in Figure 7 and Figure 8, compared with the first embodiment: be also provided with two second partitions 17 in the first cavity 111, the first cavity 111 is divided into three relatively independent distributor chamber 111a by second partition 17; Flat tube with the first chamber is also divided into three groups by second partition 17, the corresponding one group of flat tube of each distributor chamber 111a; Second partition 17 is circular arc and linear combination, and its linear segment matches with described partition member 16, and its circular arc portion matches with header outer surface of tube body, in order to seal adjacent distributor chamber 111a, forms at least two coolant channels; Namely, from the cold-producing medium that runner pipe 15 flows into, first arrive distribution cavity 113, then part is had to be assigned to the distributor chamber 111a be communicated with distribution cavity 113, multiple flowing lumen 112a that remainder is formed by partition member 16 and the second body 192 circulate, and flow to distributor chamber 111a by the tap hole 161 that the main dividing plate 162 of partition member 16 is arranged, and then be assigned in corresponding flat tube by this distributor chamber 111a; Like this because the distribution of cold-producing medium carries out predistribution near import, and the cold-producing medium of the chamber 112a that circulates all can flow to corresponding distributor chamber 111a by tap hole 161, even like this from the import part flat tube farthest of runner pipe 15, also can be assigned in requisition for cold-producing medium.Adopt this structure by the first cavity 111 Further Division of second partition 17 pairs of header body 11 inside, contribute to the uniform distribution more in header body 11 of gas-liquid two-phase cold-producing medium, thus the uniformity of gas-liquid two-phase cold-producing medium when ensureing to arrive flat pipe hole 14, improve micro-channel heat exchanger heat exchange efficiency; This structure especially can make gas-liquid two-phase cold-producing medium uniform distribution more in vertical described first header 1 placed, thus ensures the cold-producing medium uniform distribution more entering flat pipe hole 14, improves the heat exchange efficiency of micro-channel heat exchanger.
Particularly, the first body is provided with dividing plate installing hole 171, dividing plate installing hole 171 is between adjacent flat pipe hole 14; Dividing plate installing hole 171 is the long and narrow hole through the first body 191, and its length, slightly larger than the length of described second partition, ensures that second partition 17 can be inserted in described header pipe 11 body from header body outside by dividing plate installing hole 171.
In addition, in order to ensure the uniform distribution of fluid further, guide flow cross section in circulation passage correspondingly can also be mated, distance as made the actual internal area of each flowing lumen be circulated by this flowing lumen along with cold-producing medium is elongated and strengthen, or the distance making the tap hole that circulates between flowing lumen and the first cavity be circulated by this flowing lumen along with cold-producing medium is elongated and strengthen, impel the distribution of cold-producing medium more even like this.In addition, the flowing lumen shown in figure in embodiment is above three, and actually can increase and decrease as required, and the length of header namely can be coordinated to adjust.
In 4th embodiment of the present invention, as shown in Figures 9 to 11, be with the main distinction of the 3rd embodiment: in the first header, be also provided with diversion member 10, diversion member 10 is nested in header body 11, and diversion member 10 passes through welded seal with partition member 16 after one end of opening abuts or be close.
As shown in figure 11, diversion member 10 comprises base plate 101 and framework 102; The outer surface of framework 102 abuts with the inner surface of header body 11 and seals, base plate 101 comprises guiding region and Circulation Area, the bottom surface of guiding region and partition member 16 abut near one end of opening and seal, and prevent cold-producing medium from directly entering the first cavity 111 by opening; The through hole 103 base plate 101 corresponding to the setting of described flowing lumen 112 is specially in the present embodiment of Circulation Area.
Guiding region is provided with strip projected parts block 104, the protrusion direction of strip projected parts block 104 is to described opening direction from the base plate 101 of diversion member 10, the guiding region of base plate 101 is divided into the fluid passage corresponding with the quantity of flowing lumen 112 by strip projected parts block 104, is introduced by cold-producing medium in each flowing lumen 112a; Adopt this structure, the uniform distribution of cold-producing medium can be ensured further, improve the distributing uniformity of cold-producing medium in header, improve the heat exchange efficiency of micro-channel heat exchanger.In addition, diversion member also can be the shape corresponding with the cross section of the first cavity, make cold-producing medium after entering header, can not directly enter the first cavity, but first arrive distribution cavity 113, in distribution cavity, carry out predistribution, and then enter corresponding flowing lumen, and enter the corresponding position of the first cavity by the tap hole arranged in each flowing lumen, and then be assigned in flat tube.
Described first end cap 12 is nested in the framework 101 of diversion member 10, and the outer surface of described first end cap 12 abuts with framework 101 inner surface of described diversion member 10 and seals, and prevents cold-producing medium in header body to external leakage; The cross section in the region that described first end cap 12 surrounds with described diversion member 10, roughly in trapezoidal, makes shunting zone closer to opening.
The protruding block of guiding region also can be other shape, such as, according to circle or the elliptical shaped lobes etc. of certain rule distribution.
In 5th embodiment of the present invention, as shown in figure 12, be with the difference of the 3rd embodiment: the two ends of partition member 16 are provided with second partition 17, second partition 17 abuts with partition member 16 and header body 11, prevent cold-producing medium from entering from opening and directly enter the first cavity 111 afterwards, cold-producing medium is through being assigned to relatively independent multiple flowing lumen 112a, then by entering respectively in each distributor chamber 111a of the first cavity at the multicomponent discharge orifice of length direction distribution, and then the flat tube be communicated with each distributor chamber 111a is assigned to.
In above-mentioned embodiment, partition member 16 and header second body 192 are structure as a whole, can be specifically stretch or extrude the section bar formed, section bar directly comprises flowing lumen and main dividing plate, secondary dividing plate, pad during last assembly welding can be reduced like this, and processing, assembling all relatively simple.In addition, in the embodiment of above-mentioned introduction, all have both distribution cavity is communicated with between flowing lumen with opening, but the present invention is not limited to this, runner pipe also can be directly be split up into several communication nipple and be directly connected to flowing lumen, as one end outlet of leading to communicating pipe in the first header is specifically divided into three interfaces, three interfaces are connected respectively to three flowing lumens, can realize object of the present invention equally like this, distributing like this can be more even, just manufacture relative complex some.
The invention also discloses a kind of manufacture method of micro-channel heat exchanger, described micro-channel heat exchanger comprises the first header, the second header, is communicated with the flat tube of described first header and described second header, and the fin between adjacent flat tube; Described first header comprises header body, passes in and out the opening of described header body for cold-producing medium, be provided with along described header body partition member extending longitudinally in described first header, described header body is combined type, described header body comprises the first body and the second body, described first body is provided with flat pipe hole, and described first body fixes by welding with described second body; Described partition member and the second body fix and arrange and form at least two flowing lumens; Its process comprises the following steps:
S1, parts machining: by shaping for the various parts machinings of micro-channel heat exchanger, then carry out assembling and form heat exchanger package piece installing, and wherein partition member adopts shape extrusion to form;
S2, by heat exchanger package piece installing by welded welding fabrication in stove, described heat exchanger package piece installing at least comprises the first body, partition member, the second body, flat tube, fin, the second header;
Wherein, S1 parts machining comprises following sub-step:
S11, the first pipe forming: it is shaping that plate cutting completes punching simultaneously, form flat pipe hole, during if any dividing plate installing hole, forms dividing plate installing hole simultaneously; Or employing section bar, foundation length blanking also processes both ends and flat pipe hole, and formation flat pipe hole or blanking complete flat pipe hole processing simultaneously;
S12, the second pipe forming: sheet material or cutting of material machine-shaping;
S13, partition member blanking, specifically adopt shape extrusion, and foundation length blanking also processes both ends, and processing tap hole; ; Or complete tap hole processing in blanking simultaneously;
S14, other parts such as the first body, the second body, partition member assembling by shaping are fixing.
In above-mentioned S14 sub-step i.e. the first body, the second body, partition member assembly program, if also comprise second partition in heat exchanger, simultaneously or after a while second partition is inserted the dividing plate installing hole be arranged on the first body; If also comprise diversion member in heat exchanger, together with being assembled into loading header by diversion member, and the base plate of diversion member is made to be close to partition member; Then first end cap or the second end cap are installed.Header body is formed like this by the first body and the second body being combined, the partition member in header body can be made to assemble relatively simple, and make the first header carry out after assembling welding in stove together with micro-channel heat exchanger, only need by once welding the final assembling that can complete heat exchanger, operation is relatively less.
In addition, the second body can also be integrative-structure with partition member, and namely the second body and partition member are the section bars of one.S11 parts machining comprises following sub-step:
S11, the first pipe forming: it is shaping that plate cutting completes punching simultaneously, form flat pipe hole, during if any dividing plate installing hole, forms dividing plate installing hole simultaneously; Or employing section bar, foundation length blanking also processes both ends and flat pipe hole;
The processing of S12, the second body and partition member: cutting of material, two ends process and complete tap hole processing; Or complete the processing of tap hole in blanking simultaneously;
S13, by the second body of machining and partition member assembly, assemble fixing with other parts such as the first body.
By the micro-channel heat exchanger that above-mentioned manufacture method is shaping, adopt integrated partition member and the second body, decrease pad, and make the bonded block of partition member and the second body can be effectively isolated, thus ensure the distribution effects of cold-producing medium, and after employing section bar, uniformity is also improved, thus ensure product qualified rate.
Certainly, the second header can be identical with described first collecting pipe structure, also can be different.
In 6th embodiment of the present invention, as shown in Figure 14 to Figure 15, the Y-shaped arrangement of partition member 16, partition member 16 comprises two pieces of crossing main dividing plates 164, secondary dividing plate 165, header body 11 is divided into the first cavity 111 and the second cavity 112 by partition member 16, wherein main dividing plate 164 forms the first cavity 111 with collector pipe body, first cavity 111 is directly connected with flat pipe hole 14, first cavity 111 is communicated with by the multicomponent discharge orifice 161 being arranged at partition member 16 with the second cavity 112, second cavity 112 is again by two flowing lumen 112a that secondary baffle for separating is relatively independent, the component discharge orifice 161 that wherein one group of flowing lumen 112a is corresponding is positioned on the partition member 16 away from opening one end.First cavity 111 is all communicated with the opening of the second cavity 112 with the first end cap 12 in the present embodiment.Certain flowing lumen is not limited to two, can also be more than three.
In present embodiment, partition member 16 and header body 11 are combined type, one-body molded that partition member 16 is shape extrusion, blanking aft-loaded airfoil tap hole, then partition member is assembled in header body 11, header and flat tube, fin etc. are assembled after being fixed into heat exchanger, formed by welding processing welded in stove.
In present embodiment, described partition member 16 and described second partition 17 can be flat combination can be also corrugated plating, can select as required.
The principle that in sixth embodiment of the invention, cold-producing medium distributes is: described cold-producing medium enters header body 11 via the opening of the first end cap 12, cold-producing medium is divided into three parts by partition member 16, portion enters the first cavity 111, two parts enter two flowing lumen 112a respectively, the cold-producing medium entering into flowing lumen 112a enters the first cavity 111 by a corresponding component discharge orifice 161, and the flat tube 3 then by being communicated with the first cavity 111 flows out described first header 1.
Also can second partition be set in certain the present embodiment, the cold-producing medium in header can be uniformly distributed further, thus the cold-producing medium in uniform distribution flat tube.In addition, also second partition or diversion member can be set at circulation nose end, make the distribution of cold-producing medium more even.In addition, above the first end cap in multiple embodiment and the runner pipe stamping parts that also can be formed in one, can pad be reduced like this.
Micro-channel heat exchanger 100 disclosed by the invention, comprising the first header 1, second header 2, flat tube 3 and fin 4, first header 1 is influent stream header, and wherein the structure of the first header 1 can with reference to the above; Adopt the first header of the present invention, the cold-producing medium entering header body is distributed in the length direction segmentation of header, cold-producing medium is entered in flat tube and is more evenly distributed, thus the heat exchange efficiency of described micro-channel heat exchanger 100 can be improved.
One end of flat tube 3 is inserted in described first header 1 by the flat pipe hole 14 be arranged on described first header 1, and the end of one end of described flat tube 3 is positioned at the first cavity of described first header 1 and retains certain interval with described partition member 16; Ensure that cold-producing medium can flow into described flat tube 3 smoothly, ensure the uniformity of flat tube 3 inner refrigerant further, improve the heat exchange efficiency of described micro-channel heat exchanger.
It should be noted that: above embodiment is only for illustration of the present invention and unrestricted technical scheme described in the invention, although this description reference the above embodiments are to present invention has been detailed description, but, those of ordinary skill in the art is to be understood that, person of ordinary skill in the field still can modify to the present invention or equivalent replacement, and all do not depart from technical scheme and the improvement thereof of the spirit and scope of the present invention, all should be encompassed in right of the present invention.
Claims (10)
1. a micro-channel heat exchanger, comprises the first header, the second header, is communicated with the flat tube of described first header and described second header, and the fin between adjacent flat tube; Described first header comprises header body, passes in and out the opening of described first header for cold-producing medium, described header body is provided with some flat pipe holes, it is characterized in that: described first header is provided with along described header body partition member extending longitudinally, described partition member comprises main dividing plate and secondary dividing plate, described header body is divided into the first cavity and the second cavity by described main dividing plate, and described main dividing plate is provided with at least one component discharge orifice; First cavity is arranged near flat tube side, and the end of one end of described flat tube is stretched in described first cavity; Second cavity is divided at least two relatively independent flowing lumens extended longitudinally by secondary dividing plate, described first cavity with on the main dividing plate of the partition member separated, be provided with tap hole between at least one flowing lumen be communicated with this flowing lumen and the first cavity.
2. micro-channel heat exchanger according to claim 1, it is characterized in that: described first header is also provided with second partition, described first cavity to be divided at least two relatively independent distributor chambers at longitudinal direction by described second partition, and each distributor chamber respectively has one group of flat tube to be connected; And wherein having at least a distributor chamber not directly to be communicated with opening, this distributor chamber to be communicated with flowing lumen by tap hole that main dividing plate is arranged thus to be communicated with opening.
3. micro-channel heat exchanger according to claim 2, it is characterized in that: described opening is positioned at one end of described first header, away from one end relatively far away of one end, described opening position on the main dividing plate that the tap hole that one of them flowing lumen is corresponding is arranged at described partition member, the distributor chamber that this flowing lumen is communicated with directly is not communicated with opening, and this distributor chamber to be communicated with this flowing lumen by tap hole that main dividing plate is arranged thus to be communicated with opening.
4. according to claim 1-3 wherein arbitrary described micro-channel heat exchanger, it is characterized in that: in described first header, also comprise distribution cavity, described distribution cavity is arranged on the side that described first header arranges described opening, and described distribution cavity is communicated with described opening and described flowing lumen.
5. micro-channel heat exchanger according to claim 4, it is characterized in that: the main dividing plate of described partition member and secondary dividing plate are along the first header platy structure extending longitudinally, described distribution cavity is communicated with described flowing lumen, multicomponent discharge orifice by arranging between each flowing lumen with described first cavity is communicated with, each component discharge orifice along the longitudinally arrangement of described main dividing plate, the group number of tap hole identical with the quantity of flowing lumen or.
6. micro-channel heat exchanger according to claim 5, it is characterized in that: described first cavity and described second cavity are separated by described partition member substantially completely, described opening is not directly communicated with described first cavity, and described opening is communicated with by the described tap hole on the described main dividing plate of described distribution cavity, described flowing lumen and described partition member with described first cavity.
7. micro-channel heat exchanger according to claim 6, it is characterized in that: described first header is provided with the first end cap near arranging opening one end, the inner surface of the first end cap described in the end abutment of described main dividing plate one end, described first cavity and described second cavity are separated by described main dividing plate, the inner surface of described first end cap is at regular intervals apart from described secondary dividing plate, form a distribution cavity, described opening is corresponding with described distribution cavity to be arranged and is directly communicated with.
8. micro-channel heat exchanger according to claim 5, it is characterized in that: described first header is provided with the first end cap in the one end arranging opening, the inner surface of described first end cap is at regular intervals apart from described partition member, form a distribution cavity, an isolated component is also provided with in described first header, the described main dividing plate of described isolated component and described partition member abuts near one end of opening and arranges, and described isolated component isolates described distribution cavity and described first cavity.
9. micro-channel heat exchanger according to claim 8, it is characterized in that: described isolated component is be arranged at the second partition of described main dividing plate near opening one end, the described main dividing plate of described second partition and header body and partition member abuts and arranges, welded seal after assembling, described header body, second partition and the first end cap form described distribution cavity.
10. according to claim 1-4 wherein arbitrary described micro-channel heat exchanger, it is characterized in that: the Y-shaped arrangement of described partition member, described partition member comprises crossing main dividing plate and secondary dividing plate, described header body is divided into the first cavity and the second cavity by described partition member, described main dividing plate and described collector pipe body form described first cavity, described first cavity is directly connected with described flat pipe hole, and described first cavity is communicated with by the multicomponent discharge orifice be arranged on described partition member with described second cavity; Described second cavity is two relatively independent flowing lumens by described secondary baffle for separating, and the component discharge orifice that wherein one group of flowing lumen is corresponding is positioned on the described main dividing plate away from described opening one end.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310389432.1A CN104422199A (en) | 2013-08-30 | 2013-08-30 | Micro-channel heat exchanger |
| DE112014003913.6T DE112014003913T5 (en) | 2013-08-30 | 2014-07-28 | Microchannel heat exchanger and method of making the same |
| PCT/CN2014/083129 WO2015027783A1 (en) | 2013-08-30 | 2014-07-28 | Micro-channel heat exchanger and method for manufacturing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310389432.1A CN104422199A (en) | 2013-08-30 | 2013-08-30 | Micro-channel heat exchanger |
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| CN104422199A true CN104422199A (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310389432.1A Pending CN104422199A (en) | 2013-08-30 | 2013-08-30 | Micro-channel heat exchanger |
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| CN (1) | CN104422199A (en) |
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