CN105423649A - Micro-channel heat exchanger and air conditioner provided with same - Google Patents
Micro-channel heat exchanger and air conditioner provided with same Download PDFInfo
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- CN105423649A CN105423649A CN201510706694.5A CN201510706694A CN105423649A CN 105423649 A CN105423649 A CN 105423649A CN 201510706694 A CN201510706694 A CN 201510706694A CN 105423649 A CN105423649 A CN 105423649A
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- medium passage
- heat exchanger
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- channel heat
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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
- F25B39/02—Evaporators
Abstract
The invention provides a micro-channel heat exchanger and an air conditioner provided with the same. The micro-channel heat exchanger comprises a shell. A plurality of first medium channels are formed in the shell. The space between the outer peripheral walls of the first medium channels and the inner peripheral wall of the shell is divided into a plurality of second medium channels through dividing bodies. The corresponding second medium channels are arranged on the periphery of each first medium channel. The first medium channels and/or the second medium channels extend linearly. By the application of the technical scheme, when the micro-channel heat exchanger is used as an evaporator, the linearly extending medium channels can be used as air circulating channels, condensate water generated due to temperature decrease in the air heat exchange process can be smoothly discharged out of ports of the medium channels along the linearly extending medium channels, and the situation that heat exchange efficiency is affected by the icing phenomenon of the condensate water (overmuch condensate water is attached to the wall surface of a heat exchange pipeline or a more serious phenomenon) is conveniently avoided.
Description
Technical field
The present invention relates to art of refrigeration units, in particular to a kind of micro-channel heat exchanger and the air-conditioner with it.
Background technology
Fig. 1 shows the structural representation of the micro-channel heat exchanger of prior art.As shown in the figure, the micro-channel heat exchanger of prior art comprises header 1, some flat tubes 2, is arranged at fin 3 between adjacent flat tube 2, is arranged at the dividing plate 5 in header 1 and enters the influent stream pipe 6 of heat exchanger and the outflow tube 7 for fluid outflow heat exchanger for refrigerant.
The inner space of header 1 is divided into a distribution cavity and a collecting chamber of pairing setting by dividing plate 5, distribution cavity is used for the fluid in header 1 to be assigned in some flat tubes 2 corresponding with distribution cavity, and collecting chamber enters the fluid of header 1 from some flat tubes 2 corresponding with collecting chamber 152 for collecting.
Arrow in figure shows the flow direction of refrigerant, in the process of refrigerant flowing, carries out heat exchange by the fin 3 being arranged on flat tube 2 both sides with air.When using it for evaporimeter, the surface of fin 3 can form a large amount of condensed waters, the inevitably condensed water of the surface meeting attachment portion of fin 3, along with the reduction of temperature, condensed water is attached to surface because discharging smoothly, serious will produce icing phenomenon, thus affect the normal work of micro-channel heat exchanger.Further, the micro-channel heat exchanger complex structure of prior art, is also unfavorable for the collection of condensed water.
Therefore, the micro-channel heat exchanger of prior art cannot discharge condensed water smoothly, causes being used as evaporimeter, and is only used as condenser, and this causes the application of micro-channel heat exchanger to run into very large obstruction.
On the other hand, current columnar air conditioner appoints the copper pipe fin type heat exchanger so adopting routine, and its heat exchanger structure is complicated, and manufacturing procedure is many, is unfavorable for the raising of production efficiency.Namely there is no effective heat exchanger can for substituting.
Summary of the invention
Main purpose of the present invention is to provide a kind of being convenient to discharge the micro-channel heat exchanger of condensed water and have its air-conditioner, to solve the problem that the problems of the prior art micro-channel heat exchanger can not be used for evaporimeter.
To achieve these goals, according to an aspect of the present invention, provide a kind of micro-channel heat exchanger, comprise housing, multiple first medium passage is formed in housing, the divided body in space between the periphery wall of multiple first medium passage and the internal perisporium of housing is divided into multiple second medium passage, and the periphery of each first medium passage is provided with multiple second medium passage, and first medium passage and/or second medium passages extend.
Further, first medium passages extends, and multiple first medium passage is by multiple lines and multiple rows arrangement, and the first medium passage of adjacent rows shifts to install.
Further, be formed with multiple virtual hexagon in the plane perpendicular to first medium passage, multiple hexagon is the gapless arrangement of multiple lines and multiple rows ground, and each hexagonal middle part is formed with a first medium passage.
Further, first medium channel vertical in the cross section of its bearing of trend rounded or polygon.
Further, the internal perisporium of first medium passage is provided with fin, fin extends along first medium passage.
Further, dividing body is consistent with the bearing of trend of first medium passage, and the cross section perpendicular to its bearing of trend of dividing body has multiple branch, and deep one end of each branch connects the periphery wall of a first medium passage.
Further, housing is provided with the through hole corresponding with the port of first medium passage, each through hole is connected with the port of a first medium passage; And/or, housing is also provided with the import and outlet that are connected with second medium passage.
Further, housing is provided with the first import and export at the first end of second medium passage, the second end at second medium passage on housing is provided with the second import and export, and first imports and exports as import, and second imports and exports as outlet; Or first imports and exports as outlet, and second imports and exports as import.
Further, housing comprises the body shell of the tubular in both ends open and is arranged on the end cap at two ends of body shell, the axis direction of body shell is consistent with the bearing of trend of first medium passage, end cap comprises the lid end and erects cover rim on the lid end, cover rim is connected with body shell, through hole is arranged at lid the end, and through hole is connected by tube connector with the port of first medium passage; Import is arranged on the cover rim of the end cap being positioned at body shell first end, and outlet is arranged on the cover rim of the end cap being positioned at body shell second end.
Further, housing comprises the body shell of the tubular in both ends open, and micro-channel heat exchanger also comprises heat exchange main body, and heat exchange main body comprises body shell and the first medium passage be formed in body shell and second medium passage, and heat exchange main body is wholely set.
Further, micro-channel heat exchanger is used as condenser, or micro-channel heat exchanger is used as evaporimeter, and first medium passage and the equal straight line of second medium passage extend and be arranged in parallel, and first medium passage is vertically arranged; Or first medium passage and vertical direction are angularly arranged, the angle wherein between first medium passage and vertical direction is greater than 0 degree and is less than 30 degree.
Further,
Further, be provided with middle dividing body in second medium passage, middle dividing body extends along second medium passage, and two sides of middle dividing body are connected with the internal perisporium of second medium passage respectively.
According to a further aspect in the invention, present invention also offers a kind of air-conditioner, this air-conditioner comprises indoor heat exchanger and outdoor heat exchanger, and indoor heat exchanger and/or outdoor heat exchanger are above-mentioned micro-channel heat exchanger.
Further, indoor heat exchanger is micro-channel heat exchanger, and indoor heat exchanger is column formula.
Apply technical scheme of the present invention, when micro-channel heat exchanger is used as evaporimeter, can using the circulation passage of linearly extended medium channel as air, the medium channel that the condensed water that air produces because of cooling in the process of heat exchange can linearly extend gives off the port of medium channel smoothly, is conducive to avoiding producing condensed water icing phenomenon and affecting heat exchange efficiency.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the detonation configuration figure of the micro-channel heat exchanger of prior art;
Fig. 2 shows the structural representation of the micro-channel heat exchanger of the first embodiment of the present invention;
Fig. 3 shows the explosive view of the micro-channel heat exchanger of the first embodiment of the present invention;
Fig. 4 shows the schematic cross-section at A-A place in Fig. 2;
Fig. 5 shows the schematic cross-section at B-B place in Fig. 2;
Fig. 6 shows the cross section structure schematic diagram of the micro-channel heat exchanger of the second embodiment of the present invention;
Fig. 7 shows the cross section structure schematic diagram of the micro-channel heat exchanger of the third embodiment of the present invention;
Fig. 8 shows the cross section structure schematic diagram of the end cap of the micro-channel heat exchanger of the third embodiment of the present invention;
Fig. 9 shows the cross section structure schematic diagram of the micro-channel heat exchanger of the fourth embodiment of the present invention.
Reference numeral:
1, the first end cap; 2, the first tube connector; 3, first medium passage; 4, liquid refrigerants distribution cavity; 5, second medium passage; 6, the first refrigerant pipe; 7, body shell; 9, the second refrigerant pipe; 10, the second end cap; 11, gaseous coolant collecting chamber; 12, the second tube connector; 13, fin; 14, dividing body; 15, cover rim; 17, through hole.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Embodiment one
Fig. 2 shows the structural representation of the micro-channel heat exchanger of the first embodiment of the present invention; Fig. 3 shows the explosive view of the micro-channel heat exchanger of the first embodiment of the present invention; Fig. 4 shows the schematic cross-section at A-A place in Fig. 2.
Shown in composition graphs 2 to Fig. 4, the micro-channel heat exchanger of the present embodiment comprises housing, multiple first medium passage 3 is formed in housing, the divided body in space 14 between the periphery wall of multiple first medium passage 3 and the internal perisporium of housing is divided into multiple second medium passage 5, the periphery of each first medium passage 3 is provided with multiple second medium passage 5, and first medium passage 3 and/or second medium passage 5 straight line extend.
First medium passage 3 and second medium passage 5 are the circulation passage that circumference is closed, so both all can be used for the refrigerant that circulates, in order to solve the condensed water elimination problem of micro-channel heat exchanger, when micro-channel heat exchanger is used as evaporimeter, can using the circulation passage of linearly extended medium channel as air, the medium channel that the condensed water that air produces because of cooling in the process of heat exchange can linearly extend gives off the port of medium channel smoothly, is conducive to avoiding producing condensed water icing phenomenon and affecting heat exchange efficiency.
In the present embodiment, micro-channel heat exchanger be column construction as: cylindrical, square column type etc., this gives cylindrical, but other shapes as elliptical cylinder-shape, polygon-prism shape all meet this thought also should in protection domain.
The heat exchange main body of micro-channel heat exchanger comprises the body shell 7 of the tubular in both ends open and the described first medium passage 3 be formed in described body shell 7 and second medium passage 5, heat exchange main body is wholely set, its can by by mould extruding or other operations one-body molded.
As shown in Figure 2 and Figure 4, first medium passage 3 extends straight, and has gap between the periphery wall of adjacent two first medium passages 3.Second medium passage 5 also extends for straight line and is parallel to described first medium passage 3.First medium passage 3 and second medium passage 5 all extend along the axis of body shell 7.
Be the technical scheme that example introduces the application using first medium passage 3 as air communication channel, second medium passage 5 as refrigerant passage in this enforcement.
Namely the micro-channel heat exchanger of the present embodiment can be used as condenser, also can be used as evaporimeter, when being used as evaporimeter, in order to discharge condensed water smoothly, the placed angle of micro-channel heat exchanger being adjusted to described first medium passage 3 and vertically arranging; Also angularly can arrange with vertical direction for described first medium passage 3, the angle between wherein said first medium passage 3 and described vertical direction is greater than 0 degree and is less than 30 degree.During as condenser, micro-channel heat exchanger is to the no requirement (NR) of micro-channel heat exchanger placement location.
In order to make full use of the space in housing, in limited space, increase the quantity of first medium passage 3.Multiple first medium passage 3 is by multiple lines and multiple rows arrangement, and the first medium passage 3 of adjacent rows shifts to install.The first medium passage 3 of interlacing is arranged alignedly.
Specifically can be formed with multiple virtual hexagon in the plane perpendicular to first medium passage 3, multiple hexagon is the gapless arrangement of multiple lines and multiple rows ground, and each hexagonal middle part is formed with a first medium passage 3.Between the periphery wall of first medium passage 3 and hexagonal limit, there is gap, self-assembling formation second medium passage 5 between the periphery wall of first medium passage 3 and dividing body 14.
Utilize hexagonal arrangement characteristic, the cellular hexagon in whole cross section is divided into each zonule, through hole in the middle of each zonule is first medium passage 3, first medium passage 3 is used as air communication channel, and between regional, between hexagon and hexagon, the passage of self-assembling formation is second medium passage 5.
As shown in Figure 4, the first medium passage 3 of this city embodiment is rounded perpendicular to the cross section of its bearing of trend.
The circumference of each dividing body 14 is provided with multiple first medium passage 3, and the periphery wall of multiple first medium passage 3 is connected by dividing body 14.
Dividing body 14 is consistent with the bearing of trend of first medium passage 3, the cross section perpendicular to its bearing of trend of dividing body 14 has multiple branch, deep one end of each branch connects the periphery wall of a first medium passage 3, to form second medium passage 5 in the periphery of first medium passage 3.
Preferably, can also be provided with middle dividing body in described second medium passage 5, described middle dividing body extends along described second medium passage 5, and two sides of described middle dividing body are connected with the internal perisporium of described second medium passage 5 respectively.Thus second medium passage 5 is divided into more fine channel.
As shown in Figure 4, gap between the periphery wall of multiple first medium passage 3 and the internal perisporium of housing is divided into multiple microchannel (second medium passage 5) by dividing body 14, and the periphery of each first medium passage 3 has multiple microchannel (second medium passage 5).The periphery wall that multiple microchannel (second medium passage 5) all attaches first medium passage 3 extends, and two ends all have port.This microchannel can be directly elongated hole structure as shown in Figure 4, also can make the channel design of conventional microchannel further.
As Fig. 2 and 3, housing is provided with the through hole corresponding with the port of first medium passage 3, each through hole is connected with the port of a first medium passage 3, housing is also provided with the import and outlet that are connected with second medium passage 5.
Housing is provided with the first import and export at the first end of described second medium passage 2, housing is provided with the second import and export at the second end of described second medium passage 2, described first imports and exports as described import, and second imports and exports as described outlet; Or described first imports and exports as described outlet, and described second imports and exports as described import.
In the present embodiment, micro-channel heat exchanger is vertically arranged, and during refrigeration, liquid refrigerants enters from down, and gaseous coolant goes out from above; When heating, gaseous coolant is from enterprising, and liquid refrigerants goes out from down.
Alternatively, the housing of micro-channel heat exchanger comprises the body shell 7 of the tubular in both ends open, the first end of body shell 7 has been arranged on the first end cap 1, second end of body shell is provided with the second end cap 10, the axis direction of body shell 7 is consistent with the bearing of trend of first medium passage 3, first end cap 1 and the second end cap 10 include the lid end and erect cover rim on the lid end, and cover rim is connected with body shell 7.
In the present embodiment, the multiple through holes 17 that arrange corresponding to the port of the first end of multiple first medium passage 3 are provided with on 16 at the bottom of the lid of the first end cap 1, this through hole 17 is connected by the first tube connector 2 with the port of the first end of first medium passage 3, the port of the first end of the first tube connector 2 and through hole and first medium passage 3 is all tightly connected (can adopt and weld), the import be communicated with second medium passage 5 is arranged on the cover rim 15 of the first end cap 1, import is connected with the first refrigerant pipe 6.
Space between the cover rim of the first end cap 1 and the outer peripheral face of the first tube connector 2 forms the liquid refrigerants distribution cavity 4 communicated with second medium passage 5.
As shown in Figure 5, the multiple through holes that arrange corresponding to the port of the second end of multiple first medium passage 3 are provided with at the bottom of the lid of the second end cap 10, this through hole is connected by the second tube connector 12 with the port of the second end of first medium passage 3, the port of the second end of the second tube connector and through hole and first medium passage 3 is all tightly connected (can adopt and weld), the outlet be communicated with second medium passage 5 is arranged on the cover rim of the second end cap 10, outlet is connected with the second refrigerant pipe 9.
The cover rim of the second end cap 10 forms with the space between the second tube connector 12 the gaseous coolant collecting chamber 11 communicated with second medium passage 5.
In the present embodiment, the first tube connector 2 and the second tube connector 12 are the circle suitable with first medium passage 3.
In the present embodiment, refrigerant flows in the first end cap 1 by the first refrigerant pipe 6, and through the allocations between the periphery wall and cover rim 15 of multiple first tube connector 2 in second medium passage 5, then flow out through the second refrigerant pipe 9 after confluxing in the second end cap 10, air enters first medium passage 3 by being arranged on the through hole that first end covers, in the process flowing through first medium passage 3, carry out heat exchange with the refrigerant in second medium passage 5 and lower the temperature, the condensed water produced is discharged along first medium passage 3, therefore, the micro-channel heat exchanger of the present embodiment efficiently solves discharges condensation water problem.
In the present embodiment, refrigerant also can adopt the type of flow contrary to the above, is set to refrigerant exit by the first refrigerant pipe 6, and the second refrigerant pipe 9 is set to refrigerant import.
Because the second medium passage 5 of the circulation refrigerant formed by microchannel as the first medium passage 3 of air flow channel all surrounds, so there is not heat exchange dead-time problem, heat exchange area availability reaches 100%.
Because Thermal Performance of Micro Channels performance is good, area availability is high again, and refrigerant use amount is few, and the cost of material is low, and manufacturing procedure is simple etc., and the little cost of transportation of complete machine housing is reduced, and production efficiency is high; Complete machine cost can significantly reduce.
The micro-channel heat exchanger of the present embodiment discharges cold water problem owing to solving, so can be used as the indoor heat exchanger of air-conditioner, can certainly be used as outdoor heat exchanger.
Because the heat exchanger of the present embodiment adopts multiple linearly extended medium channel, its shell is applicable to be set to column, when therefore the micro-channel heat exchanger of the present embodiment being used for columnar air conditioner indoor set, the space utilization degree in the air conditioning chamber of column formula can be made greatly to improve.
Embodiment two
Fig. 6 shows the cross section structure schematic diagram of the micro-channel heat exchanger of the second embodiment of the present invention.The present embodiment is improved to relative to embodiment one, the internal perisporium of first medium passage 3 is provided with fin 13, and fin 13 extends along first medium passage 3.Be set to by fin 13 extend along first medium passage 3, fin 13 can not affect the discharge of condensed water.
The effect of fin, on the one hand in order to increase heat exchange area, being conducive to condensed water on the other hand and converging in the convenient bond area of discharging and reducing condensed water bottom fin 13.
In order to improve the heat transfer effect of air and refrigerant, on the internal perisporium of first medium passage 3, be provided with multiple fin 13 alternatively, multiple fin 13 along the circumference of first medium passage 3 evenly to layout.
Embodiment three
Fig. 7 shows the cross section structure schematic diagram of the micro-channel heat exchanger of the third embodiment of the present invention; The present embodiment is improved to relative to embodiment one, and the cross section perpendicular to its bearing of trend of first medium passage 3 is hexagon.
As shown in Figure 8, in the present embodiment, the port connecting first medium passage 3 becomes hexagon with the tube connector of the through hole be arranged on end cap.
Embodiment four
As shown in Figure 9, the present embodiment is provided with multiple fin 13 relative to being improved to of embodiment three on the internal perisporium of first medium passage 3, and the bearing of trend of each fin 13 is all consistent with the bearing of trend of first medium passage 3.The effect of fin, on the one hand in order to increase heat exchange area, being conducive to condensed water on the other hand and converging in the convenient bond area of discharging and reducing condensed water bottom fin 13.
As shown in Figure 9, the angle on adjacent two limits is provided with a fin 13, to improve the heat transfer effect of air and refrigerant.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. a micro-channel heat exchanger, it is characterized in that, comprise housing, multiple first medium passage (3) is formed in described housing, the divided body in space (14) between the periphery wall of multiple described first medium passage (3) and the internal perisporium of described housing is divided into multiple second medium passage (5), the periphery of each described first medium passage (3) is provided with multiple described second medium passage (5), and described first medium passage (3) and/or described second medium passage (5) straight line extend.
2. micro-channel heat exchanger according to claim 1, it is characterized in that, described first medium passage (3) straight line extends, and multiple described first medium passage (3) is by multiple lines and multiple rows arrangement, and the described first medium passage (3) of adjacent rows shifts to install.
3. micro-channel heat exchanger according to claim 2, it is characterized in that, multiple virtual hexagon is formed in the plane perpendicular to described first medium passage (3), multiple hexagon is the gapless arrangement of multiple lines and multiple rows ground, and each described hexagonal middle part is formed with a described first medium passage (3).
4. micro-channel heat exchanger according to claim 2, is characterized in that, described first medium passage (3) is rounded or polygon perpendicular to the cross section of its bearing of trend.
5. micro-channel heat exchanger according to claim 1, it is characterized in that, the internal perisporium of described first medium passage (3) is provided with fin (13), and described fin (13) extends along described first medium passage (3).
6. micro-channel heat exchanger according to claim 1, it is characterized in that, described dividing body (14) is consistent with the bearing of trend of described first medium passage (3), the cross section perpendicular to its bearing of trend of described dividing body (14) has multiple branch, and deep one end of each described branch connects the periphery wall of a described first medium passage (3).
7. micro-channel heat exchanger according to any one of claim 1 to 6, is characterized in that,
Described housing is provided with the through hole corresponding with the port of described first medium passage (3), each described through hole is connected with the port of a described first medium passage (3); And/or,
Described housing is also provided with the import and outlet that are connected with described second medium passage (2).
8. micro-channel heat exchanger according to claim 7, it is characterized in that, described housing is provided with the first import and export at the first end of described second medium passage (2), described housing is provided with the second import and export at the second end of described second medium passage (2)
Described first imports and exports as described import, and described second imports and exports as described outlet; Or,
Described first imports and exports as described outlet, and described second imports and exports as described import.
9. micro-channel heat exchanger according to claim 7, it is characterized in that, described housing comprises the body shell (7) of the tubular in both ends open and is arranged on the end cap (1,10) at two ends of described body shell (7), the axis direction of described body shell (7) is consistent with the bearing of trend of described first medium passage (3), described end cap (1,10) comprises the lid end and erects cover rim at the bottom of described lid, described cover rim is connected with described body shell (7)
Described through hole is arranged at the bottom of described lid, and described through hole is connected by tube connector (2,12) with the port of described first medium passage (3);
Described import is arranged on the cover rim of the described end cap (1) being positioned at described body shell (7) first end, and described outlet is arranged on the cover rim of the described end cap (10) being positioned at described body shell (7) second end.
10. micro-channel heat exchanger according to claim 1, it is characterized in that, described housing comprises the body shell (7) of the tubular in both ends open, described micro-channel heat exchanger also comprises heat exchange main body, described heat exchange main body comprises described body shell (7) and the described first medium passage (3) that is formed in described body shell (7) and second medium passage (5), and described heat exchange main body is wholely set.
11. micro-channel heat exchangers according to claim 1, is characterized in that,
Described micro-channel heat exchanger is used as condenser, or,
Described micro-channel heat exchanger is used as evaporimeter, and described first medium passage (3) and described second medium passage (5) all straight line extend and be arranged in parallel, and described first medium passage (3) is vertically arranged; Or described first medium passage (3) and vertical direction are angularly arranged, and the angle between wherein said first medium passage (3) and described vertical direction is greater than 0 degree and is less than 30 degree.
12. micro-channel heat exchangers according to claim 1, it is characterized in that, middle dividing body is provided with in described second medium passage (5), described middle dividing body extends along described second medium passage (5), and two sides of described middle dividing body are connected with the internal perisporium of described second medium passage (5) respectively.
13. 1 kinds of air-conditioners, comprise indoor heat exchanger and outdoor heat exchanger, it is characterized in that, described indoor heat exchanger and/or the micro-channel heat exchanger of described outdoor heat exchanger according to any one of claim 1 to 12.
14. air-conditioners according to claim 13, is characterized in that, described indoor heat exchanger is described micro-channel heat exchanger, and described indoor heat exchanger is column formula.
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CN106964306A (en) * | 2017-05-12 | 2017-07-21 | 中国科学院上海高等研究院 | Microchannel plate, gas-liquid reactor and reaction system with point shape honeycomb |
CN110195947A (en) * | 2018-02-24 | 2019-09-03 | 三花控股集团有限公司 | Gas-liquid separator and heat-exchange system |
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