CN104879954A - Heat exchange system and heat exchanger thereof - Google Patents
Heat exchange system and heat exchanger thereof Download PDFInfo
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- CN104879954A CN104879954A CN201410068228.4A CN201410068228A CN104879954A CN 104879954 A CN104879954 A CN 104879954A CN 201410068228 A CN201410068228 A CN 201410068228A CN 104879954 A CN104879954 A CN 104879954A
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- heat exchanger
- exchanger fin
- chamber
- header
- ground floor
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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
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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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
- F25B27/00—Machines, plants or systems, using particular sources of energy
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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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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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 provides a heat exchanger comprises at least two layers of heat exchanger fins, each layer of heat exchanger fins comprises a lower collecting pipe, an upper collecting pipe, a plurality of microchannel flat tubes connecting the upper collecting pipe and the lower collecting pipe, and fins disposed among the microchannel flat tubes. The lower collecting pipe of the first layer of heat exchanger fins is provided with a refrigerant inlet tube, the upper collecting pipe of the last layer of heat exchanger fins is provided with a refrigerant outlet pipe, a connecting channel is disposed between an upper collecting pipe of a former layer of heat exchanger fins and a lower collecting pipe of a later layer of heat exchanger fins, a refrigerant pass through the connecting channel from the former layer of heat exchanger fins to the later layer of heat exchanger fins, and the refrigerant flows from the lower portion to the upper portion in the microchannel flat tubes of each layer of heat exchanger fins. According to the heat exchanger, the refrigerant flows from the lower portion to the upper portion in the microchannel flat tubes of each layer of heat exchanger fins, so the heat exchange performance of the heat exchanger can be raised.
Description
[technical field]
The invention belongs to field of heat exchange, particularly about multilayer parallel stream field of heat exchangers.
[background technology]
Heat exchanger, as a kind of heat exchange device, all can be used in many fields of carrying out heat exchange that needs, and particularly in air-conditioning, heat exchanger is an important component part of air-conditioning.Wherein because parallel-flow heat exchanger has the features such as refrigerating efficiency is high, volume is little, lightweight, voltage endurance capability is strong, parallel-flow heat exchanger is more and more applied in air-conditioning.
Parallel-flow heat exchanger forms primarily of micro-channel flat, radiating fin and header.Header is provided with, for distributing and collecting cold-producing medium at the two ends of micro-channel flat.Be provided with undulatory or with the radiating fin of shutter shape between adjacent micro-channel flat, in order to the heat exchange efficiency of enhanced heat exchange device and air side.
Parallel-flow heat exchanger is because volume is little, and multilayer can be arranged in same space, and the parallel-flow heat exchanger of multilayer is because the path of flow of refrigerant warp is longer, so heat exchange property is also better.
Please refer to Fig. 1, shown in Fig. 1 is the structural representation of existing dual-layer Parallel stream heat exchanger.1 ＇ is heat exchanger refrigerant inlet tube, and 2 ＇ are refrigerant outlet pipe, and 3 ＇, 4 ＇, 5 ＇ and 6 ＇ are header, and 7 ＇ are fin, and 8 ＇ are micro-channel flat.Inlet tube 1 ＇ is located on header 3 ＇, and outlet 2 ＇ is located on header 6 ＇.Header 3 ＇ and the parallel arranged adjacent of header 6 ＇, header 4 ＇ and header 5 ＇ also parallel arranged adjacent, and on the binding face of header 4 ＇ and header 5 ＇, be provided with through hole make both inner space.Micro-channel flat 8 ＇ is arranged parallel to each other, and matches with header 3 ＇ and header 4 ＇ respectively or match with header 5 ＇ and header 6 ＇ in both ends.Fin 7 ＇ is arranged in the middle of adjacent micro-channel flat 8 ＇.
Arrow in Fig. 1 represents the flow direction of cold-producing medium in heat exchanger.First cold-producing medium flow into header 3 ＇ from inlet tube 1 ＇, header 4 ＇ is flow to by micro-channel flat 8 ＇ after over-allocation, then header 5 ＇ is entered into by the through hole between header 4 ＇ and 5 ＇, then flow in header 6 ＇ through micro-channel flat 8 ＇, finally from outlet 2 ＇ outflow heat exchanger.
Existing this Multi-layer exchanging heat device, its cold-producing medium flows from top to bottom after header 4 ＇ enters header 5 ＇ when header 5 ＇ flows to header 6 ＇, because the cold-producing medium in header 5 ＇ is the admixture of gas and liquid, when cold-producing medium flows downward from header 5 ＇, now liquid cold-producing medium can more easily flow downward due to gravity, and the cold-producing medium of gaseous state is due to lighter in weight, be more prone to move upward, now liquid cold-producing medium and the cold-producing medium of gaseous state can form blocking in header 5 ＇, flowing is not smooth, affects heat exchange efficiency.In addition, when flowing from top to bottom when cold-producing medium flows to header 6 ＇ from header 5 ＇, liquid cold-producing medium is because the effect of gravity, directly may directly fall to lower end header 6 ＇ from the pipeline center of the inner chamber of micro-channel flat 8 ＇ from upper end header 5 ＇, now liquid refrigerant does not contact with the chamber wall of micro-channel flat passage 8 ＇ of heat exchanger, and the cold-producing medium of gaseous state is extruded into and contacts with the internal chamber wall of micro-channel flat 8 ＇, and the micro-channel flat passage of heat exchanger contacts with ambient air and carries out heat exchange, when liquid refrigerant does not contact with the chamber wall of micro-channel flat passage and directly falls to lower end header, namely the heat transfer effect of this some liquid refrigerant has a greatly reduced quality, therefore heat transfer effect is undesirable, reduce the heat exchange property of heat exchanger.
Therefore, be necessary to improve existing heat exchanger.
[summary of the invention]
The object of the present invention is to provide the better heat exchanger of a kind of heat exchange property.
Another object of the present invention is to the heat-exchange system providing a kind of heat exchange property good.
For reaching aforementioned object, a kind of heat exchanger of the present invention, it comprises two-layer heat exchanger fin, multiple micro-channel flat that every layer of heat exchanger fin comprises lower header in lower header, upper header, connection and the fin be arranged between micro-channel flat, the lower header of ground floor heat exchanger fin is provided with cold-producing medium flow-through opening, the upper header of second layer heat exchanger fin is provided with cold-producing medium flow-through opening, between the upper header and the lower header of second layer heat exchanger fin of ground floor heat exchanger fin, is provided with interface channel.
According to one embodiment of present invention, the circulation passage of described interface channel is greater than the circulation passage of described single micro-channel flat.
According to one embodiment of present invention, described header is the lengthwise cylindrical tube of closed at both ends, described interface channel is the tube connector being arranged at every layer of heat exchanger fin one end, the upper header of end cap and ground floor heat exchanger fin that the upper header of ground floor heat exchanger fin is run through in one end of described tube connector is communicated with, and the end cap that the other end of described tube connector runs through the lower header of second layer heat exchanger fin is communicated with the lower header of second layer heat exchanger fin.
According to one embodiment of present invention, described header is the lengthwise cylindrical tube of closed at both ends, described interface channel is two tube connectors being arranged at every layer of heat exchanger fin two ends, the upper header of end cap and ground floor heat exchanger fin that each tube connector runs through the upper header of ground floor heat exchanger fin is respectively communicated with, and the end cap that the other end runs through the lower header of second layer heat exchanger fin is respectively communicated with the lower header of second layer heat exchanger fin.
According to one embodiment of present invention, described header is the lengthwise cylindrical tube of closed at both ends, described interface channel is arranged at the side on ground floor heat exchanger fin, wherein the lower header of ground floor heat exchanger fin is provided with dividing plate and lower header is separated into the first chamber and the second chamber, refrigerant inlet pipe is arranged at the first chamber, first chamber is communicated with upper header by micro-channel flat, second chamber is communicated with the lower header of second layer heat exchanger fin, described interface channel comprises the second chamber of tube connector and described ground floor heat exchanger fin, one end of wherein said tube connector is communicated with the upper header of ground floor heat exchanger fin, described second chamber of the lower header of the other end and ground floor heat exchanger fin is through.
According to one embodiment of present invention, described header is the lengthwise cylindrical tube of closed at both ends, described interface channel is the both sides being arranged at ground floor heat exchanger fin respectively, the lower header of ground floor heat exchanger fin is provided with two dividing plates and lower header is separated into first chamber at two ends and the second chamber of the 3rd chamber and centre, wherein said second chamber is communicated with upper header by micro-channel flat, first chamber at two ends is communicated with the lower header of second layer heat exchanger fin with the 3rd chamber, described interface channel comprises the first chamber and the 3rd chamber of two tube connectors and described ground floor heat exchanger fin, one of them tube connector one end is communicated with the upper header of ground floor heat exchanger fin, first chamber of the other end and ground floor heat exchanger fin lower header is through, another tube connector one end is passed through and is communicated with the upper header of ground floor heat exchanger fin, 3rd chamber of the other end and ground floor heat exchanger fin lower header is through.
According to one embodiment of present invention, described header is the lengthwise cylindrical tube of closed at both ends, described interface channel is the side being arranged at second layer heat exchanger fin, the upper header of second layer heat exchanger fin is provided with dividing plate and the upper header of second layer heat exchanger fin is separated into the first chamber and the second chamber, refrigerant outlet pipe is arranged at described first chamber, described first chamber is communicated with by micro-channel flat with the lower header of second layer heat exchanger fin, second chamber of the upper header of described second layer heat exchanger fin is communicated with the upper header of ground floor heat exchanger fin, described interface channel comprises the second chamber of header on tube connector and second layer heat exchanger fin, described second chamber of its one end of described tube connector and second layer heat exchanger fin is through, the other end is communicated with the lower header of second layer heat exchanger fin.
According to one embodiment of present invention, described header is the lengthwise cylindrical tube of closed at both ends, described interface channel is the both sides being arranged at second layer heat exchanger fin, the upper header of second layer heat exchanger fin is provided with two dividing plates and the upper header of second layer heat exchanger fin is separated into first chamber at two ends and the second chamber of the 3rd chamber and centre, refrigerant outlet pipe is arranged at described second chamber, described second chamber is communicated with by micro-channel flat with the lower header of second layer heat exchanger fin, first chamber of the upper header of described second layer heat exchanger fin is communicated with the upper header of ground floor heat exchanger fin with the 3rd chamber, described interface channel comprises the first chamber and the 3rd chamber of header on two tube connectors and second layer heat exchanger fin, one end of one of them tube connector and the first chamber of second layer heat exchanger fin through, the other end is communicated with the lower header of second layer heat exchanger fin, one end of another tube connector and the 3rd chamber of second layer heat exchanger fin through, the other end is communicated with the lower header of second layer heat exchanger fin.
According to one embodiment of present invention, described header is the lengthwise cylindrical tube of closed at both ends, described tube connector is the centre being arranged at ground floor heat exchanger fin, the lower header of described ground floor heat exchanger fin is provided with two dividing plates and the lower header of ground floor heat exchanger fin is separated into first chamber at two ends and the second chamber of the 3rd chamber and centre, at the first chamber of the lower header of described ground floor heat exchanger fin and the 3rd chamber, refrigerant inlet pipe is set respectively, first chamber of the lower header of ground floor heat exchanger fin is communicated with the upper header of ground floor heat exchanger fin by micro-channel flat with the 3rd chamber, second chamber of the lower header of described ground floor heat exchanger fin is communicated with the lower header of second layer heat exchanger fin, described interface channel comprises the second chamber of tube connector and described ground floor heat exchanger fin, one end of described tube connector is communicated with the upper header of ground floor heat exchanger fin, second chamber of the lower header of the other end and described ground floor heat exchanger fin is through.
For reaching another object aforementioned, a kind of heat-exchange system of the present invention, it comprises aforesaid heat exchanger, cold-producing medium flows into the lower header of ground floor heat exchanger fin from the cold-producing medium flow-through opening of the lower header of the ground floor heat exchanger fin of described heat exchanger, flow into the upper header of described ground floor heat exchanger fin through described micro-channel flat from the lower header of the ground floor heat exchanger fin of described heat exchanger, flow into the lower header of described second layer heat exchanger fin through described interface channel from the upper header of described ground floor heat exchanger fin, the upper header of described second layer heat exchanger fin is flowed into and the cold-producing medium flow-through opening through the upper header of second layer heat exchanger fin flows out through described micro-channel flat from the lower header of described second layer heat exchanger fin.
Compared with prior art, Multi-layer exchanging heat device of the present invention, the upper header of its front one deck heat exchanger fin is connected by tube connector with the lower header of later layer heat exchanger fin, the upper header of cold-producing medium in the past one deck heat exchanger fin through described tube connector from the lower header entering later layer heat exchanger fin, cold-producing medium flows all from bottom to top in the micro-channel flat of every layer of heat exchanger fin, can improve the heat exchange property of heat exchanger like this.
[accompanying drawing explanation]
Fig. 1 is the structural representation of existing dual-layer Parallel stream heat exchanger.
Fig. 2 is the structural representation of another angle of existing dual-layer Parallel stream heat exchanger.
Fig. 3 is the structural representation of the first embodiment of parallel-flow heat exchanger of the present invention, and wherein the upper header of ground floor heat exchanger fin is communicated with by tube connector with one end of the lower header of second layer heat exchanger fin.
Fig. 4 is the structural representation of another angle of parallel-flow heat exchanger shown in Fig. 3.
Fig. 5 is the exploded view of parallel-flow heat exchanger shown in Fig. 4.
Fig. 6 be embodiment illustrated in fig. 5 in the structural representation of micro-channel flat.
Fig. 7 is the enlarged diagram of the micro-channel flat structure shown in Fig. 6.
Fig. 8 be embodiment illustrated in fig. 5 in the structure for amplifying schematic diagram of fin.
Fig. 9 is the sectional view in the A-A line direction of header along the parallel-flow heat exchanger shown in Fig. 3.
Figure 10 is the structural representation of the second embodiment of parallel-flow heat exchanger of the present invention, and wherein the upper header of ground floor heat exchanger fin is communicated with by two tube connectors with the two ends of the lower header of second layer heat exchanger fin.
Figure 11 is the structural representation of another angle of parallel-flow heat exchanger shown in Figure 10.
Figure 12 is the sectional view in the B-B line direction of the header of the parallel-flow heat exchanger shown in Figure 10.
Figure 13 is the structural representation of the 3rd embodiment of parallel-flow heat exchanger of the present invention, wherein arrange interface channel in the side of ground floor heat exchanger fin, this interface channel comprises the chamber be communicated with the lower header of second layer heat exchanger fin that tube connector separates with the dividing plate of the lower header of ground floor heat exchanger fin.
Figure 14 is the structural representation of another angle of the heat exchanger shown in Figure 13
Figure 15 is the exploded view of the embodiment shown in Figure 13.
Figure 16 and Figure 17 is the structural representation of the 4th embodiment of parallel-flow heat exchanger of the present invention, wherein arranges two interface channels in the both sides of ground floor heat exchanger fin.
Figure 18 and Figure 19 is the structural representation of the 5th embodiment of parallel-flow heat exchanger of the present invention, wherein arrange interface channel in the side of second layer heat exchanger fin, this interface channel comprises the chamber be communicated with the upper header of ground floor heat exchanger fin that tube connector separates with the dividing plate of the upper header of second layer heat exchanger fin.
Figure 20 and Figure 21 is the structural representation of the 6th embodiment of parallel-flow heat exchanger of the present invention, wherein arranges two interface channels in the both sides of second layer heat exchanger fin.
Figure 22 and Figure 23 is the structural representation of the 7th embodiment of parallel-flow heat exchanger of the present invention, wherein arrange interface channel in the centre of ground floor heat exchanger fin, this interface channel comprises the chamber be communicated with the lower header of second layer heat exchanger fin that tube connector separates with the dividing plate of the lower header of ground floor heat exchanger fin.
Figure 24 and Figure 25 is the structural representation of the 8th embodiment of parallel-flow heat exchanger of the present invention, wherein arrange interface channel in the centre of second layer heat exchanger fin, this interface channel comprises the chamber be communicated with the upper header of ground floor heat exchanger fin that tube connector separates with the dividing plate of the upper header of second layer heat exchanger fin.
[detailed description of the invention]
Below in conjunction with accompanying drawing, specific embodiments of the invention are described.
Heat exchanger of the present invention is for for cold-producing medium inflow and outflow, when cold-producing medium flows through from heat exchanger and heat exchanger ambient air carry out heat exchange.Refer to shown in Fig. 3, Fig. 4 and Fig. 5, it shows the structural representation of the first embodiment of heat exchanger of the present invention.Wherein do not show refrigerant inlet pipe and the refrigerant outlet pipe of heat exchanger of the present invention in Fig. 5.As shown in Figures 3 to 5, heat exchanger of the present invention comprises it and comprises refrigerant inlet pipe 1, refrigerant outlet pipe 2 and the two-layer heat exchanger fin between refrigerant inlet pipe 1 and outlet 2 in this embodiment.Wherein ground floor heat exchanger fin comprises the lower header 3, the upper header 4 that are parallel to each other.Second layer heat exchanger fin comprises the lower header 5, the upper header 6 that are parallel to each other, is provided with some spaced vertical micro-channel flat 7 and fins between adjacent microchannel flat tube 8 of being parallel to each other that header is inserted at two ends respectively between the upper header and lower header of every layer of heat exchanger fin.One end of the upper header 4 of ground floor heat exchanger fin is communicated with by a tube connector 9 with one end of the lower header 5 of second layer heat exchanger fin.The lower header of wherein ground floor heat exchanger fin forms opening, refrigerant inlet pipe 1 is connected with the opening of the lower header 3 of ground floor heat exchanger fin and is communicated with the lower header 3 of ground floor heat exchanger fin, the upper header of second layer heat exchanger fin forms opening, and refrigerant outlet pipe 2 is connected with the opening of the upper header 6 of second layer heat exchanger fin and is communicated with the upper header of second layer heat exchanger fin.In other embodiments, described refrigerant inlet pipe 1 also can be one-body molded and form the communication port flowed into for cold-producing medium with the lower header 3 of ground floor heat exchanger fin, and the outlet 2 of described cold-producing medium also can be one-body molded and form the communication port that confession cold-producing medium flows out with the upper header 6 of second layer heat exchanger fin.
Refer to shown in Fig. 5, in the first embodiment of the present invention, the lower header 3 of described ground floor heat exchanger fin is integrated with the lower header 5 of second layer heat exchanger fin.The lower header 3 of described ground floor heat exchanger fin comprises a hollow lengthwise cylindrical-shaped main body 31, and the two ends of this cylindrical-shaped main body 31 are closed by end cap 32, form the host cavity for flow of refrigerant.Described refrigerant inlet pipe 1 is positioned at the side of close one end of described lengthwise cylindrical-shaped main body 31.Some slits 33 running through main body 31 barrel be parallel to each other are offered at the upper surface of lengthwise cylindrical-shaped main body 31.In the lower header 3 of ground floor heat exchanger fin, be provided with a cylindrical shape distributing pipe 34, the tube wall of distributing pipe 34 is provided with the spaced through hole 341 of some.The lower header 5 of second layer heat exchanger fin comprises a hollow lengthwise cylindrical-shaped main body 51, and wherein the two ends of this cylindrical-shaped main body 51 are closed by end cap 52.Some slits 53 running through main body 51 barrel be parallel to each other are offered at the upper surface of the lengthwise cylindrical-shaped main body 51 of the lower header 5 of second layer heat exchanger fin.In the lower header 5 of second layer heat exchanger fin, be provided with a cylindrical shape distributing pipe 54, the tube wall of distributing pipe 54 is provided with the spaced through hole 541 of some.Share a barrel between the lower header 3 of ground floor heat exchanger fin and the lower header 5 of second layer heat exchanger fin, but be not mutually communicated with.
The upper header 4 of described ground floor heat exchanger fin is integrated with the upper header 6 of second layer heat exchanger fin.The upper header 4 of described ground floor heat exchanger fin comprises a hollow lengthwise cylindrical-shaped main body 41, and wherein the two ends of this cylindrical-shaped main body 41 are closed by end cap 42, form the host cavity for flow of refrigerant.Some slits (non-label) running through main body 41 barrel be parallel to each other are offered at the lower surface of the lengthwise cylindrical-shaped main body 41 of the upper header 4 of ground floor heat exchanger fin.The upper header 6 of described second layer heat exchanger fin comprises a hollow lengthwise cylindrical-shaped main body 61, and wherein the two ends of this cylindrical-shaped main body 61 are closed by end cap 62, form the host cavity for flow of refrigerant.Some slits 63 running through main body 61 barrel be parallel to each other are offered at the lower surface of the lengthwise cylindrical-shaped main body 61 of the upper header 6 of second layer heat exchanger fin, the upper header 4 of ground floor heat exchanger fin and the upper header 6 of the second heat exchanger fin share a barrel, but are not mutually communicated with.The side of close one end of the cylindrical-shaped main body 61 of the upper header 6 of second layer heat exchanger fin is provided with a refrigerant outlet pipe 2.
As shown in FIG. 6 and 7, described micro-channel flat 7 entirety is lengthwise flattened rectangular cavity body, and be formed with some spaced walls 71 along its longitudinally, described flattened rectangular cavity body is separated into some parallel microchannels 72 by this spaced walls 71.
As shown in Figure 8, described fin 8 is strip flake aluminum continuous " several " font through being repeatedly bent to form.
As shown in Figures 3 to 5, in this embodiment, described tube connector 9 is middle is straight tube, the cylinder U-bend that two ends bend.
During assembling, described refrigerant inlet pipe 1 is installed on the side of close one end of the cylindrical-shaped main body 31 of the lower header 3 of ground floor heat exchanger fin.One end of the micro-channel flat 7 of the first heat exchanger fin is inserted in the slit 33 of lower header 3 barrel of ground floor heat exchanger fin, the other end of the micro-channel flat 7 of the first heat exchanger fin inserts in the slit of upper header 4 barrel of ground floor heat exchanger fin, then micro-channel flat 7 and the upper header 4 of ground floor heat exchanger fin and the lower header 3 of ground floor heat exchanger fin is fixed by welding at the slit place of the lower header 3 of ground floor heat exchanger fin and upper header 4 barrel of ground floor heat exchanger fin.Described fin 8 is arranged between two adjacent micro-channel flat 7, is fixed together, the fin at the upper and lower two ends of whole heat exchanger is wherein only shown in figure by mode and the micro-channel flat 7 of welding, centre not shown.The slit 53 of lower header 5 barrel of second layer heat exchanger fin is inserted in one end of the micro-channel flat 7 of described second heat exchanger fin, the other end inserts in the slit 63 of upper header 6 barrel of second layer heat exchanger fin, then micro-channel flat 7 and the upper header 6 of second layer heat exchanger fin and the lower header 5 of second layer heat exchanger fin is fixed by welding at the slit place of header barrel.Described fin 8 is arranged between two adjacent micro-channel flat 7, by welding mode and micro-channel flat 7 be fixed together.Upper lower header is fixedly connected with by end plate 10 at the two ends, left and right of whole heat exchanger.Wherein micro-channel flat 7 inserts the inner certain depth of each header, and the end of micro-channel flat 7 and header internal chamber wall in a distance, make the microchannel 72 of header inner chamber and micro-channel flat 7 be interconnected.The upper header 4 of end cap 42 and ground floor heat exchanger fin that the upper header 4 of ground floor heat exchanger fin is run through in one end of described tube connector 9 is communicated with, the lower header 5 of end cap 52 and second layer heat exchanger fin that the other end of described tube connector 9 runs through one end of the lower header 5 of second layer heat exchanger fin is communicated with, and the interface channel that the upper header 4 of such ground floor heat exchanger fin is formed by cylindrical shape tube connector 9 with the lower header 5 of second layer heat exchanger fin is communicated with.
As shown in Figure 9, in its display Fig. 3, the lower header 3 of ground floor heat exchanger fin and the lower header 5 of second layer heat exchanger fin are along the sectional view in A-A line direction, and described refrigerant inlet pipe 1 is connected with distributing pipe 34 in the lower header 3 of ground floor heat exchanger fin.In the lower header 5 of second layer heat exchanger fin, the end cap 52 that the lower header 5 of second layer heat exchanger fin is run through in one end of described tube connector 9 is connected with described cylindrical shape distributing pipe 53.
Operationally, as shown in the black arrow in Fig. 3 and Fig. 4, cold-producing medium enters in the distributing pipe 34 in the lower header 3 of ground floor heat exchanger fin by refrigerant inlet pipe 1, enter in the inner chamber of lower header 3 of ground floor heat exchanger fin by the through hole 341 on distributing pipe 34 tube wall, then cold-producing medium upwards flows into the upper header 4 of ground floor heat exchanger fin by the microchannel 72 of micro-channel flat 7, when cold-producing medium flows into the upper header 4 of ground floor heat exchanger fin from the lower header 3 of ground floor heat exchanger fin through micro-channel flat 7, a part of liquid refrigerant gasification in micro-channel flat 7 becomes gaseous refrigerant, liquid refrigerant needs heat absorption when becoming gaseous refrigerant, cold-producing medium carries out heat exchange by micro-channel flat 7 and surrounding air, draw the heat of surrounding air.The cold-producing medium entering the gas-liquid mixed of the upper header 4 of ground floor heat exchanger fin enters in the distributing pipe 53 of the lower header 5 of second layer heat exchanger fin by tube connector 9, cold-producing medium flows in lower header 5 inner chamber of second layer heat exchanger fin uniformly through the through hole 531 of distributing pipe 53.Cold-producing medium in lower header 5 inner chamber of second layer heat exchanger fin upwards flows into the upper header 6 of second layer heat exchanger fin by micro-channel flat 7, when cold-producing medium flows into the upper header 6 of second layer heat exchanger fin from the lower header 5 of second layer heat exchanger fin through micro-channel flat 7, a part of liquid refrigerant gasification in micro-channel flat 7 becomes gaseous refrigerant, liquid refrigerant needs heat absorption when becoming gaseous refrigerant, cold-producing medium carries out heat exchange by micro-channel flat 7 and surrounding air, draws the heat of surrounding air.
In heat exchanger of the present invention, described cold-producing medium flows into the lower header 5 of second layer heat exchanger fin after the upper header 4 flowing into ground floor heat exchanger fin by tube connector 9, then upwards flow in the upper header 6 of second layer heat exchanger fin through micro-channel flat 7, cold-producing medium is all flow from bottom to top in the micro-channel flat 7 of two-layer heat exchanger fin, because when cold-producing medium flows from bottom to top in micro-channel flat, the cold-producing medium of gaseous state is because lighter in weight, micro-channel flat upper end can be flow to quickly and evenly from micro-channel flat lower end, and the cold-producing medium of liquid state can first be piled up in header, and then enter into micro-channel flat passage, the liquid refrigerant entered in micro-channel flat can be extruded by gaseous refrigerant and more be posted by the chamber wall of micro-channel flat, more be conducive to carrying out heat exchange with the air outside micro-channel flat, effectively can improve the heat exchange property of heat exchanger.
Refer to shown in Figure 10 and Figure 11, it shows the structural representation of the second embodiment of heat exchanger of the present invention, and wherein identical with the first embodiment element adopts identical label.The difference of this second embodiment and aforementioned first embodiment is, the two ends of the upper header 4 of described ground floor heat exchanger fin are communicated with respectively by the two ends of two tube connectors 9 with the lower header 5 of second layer heat exchanger fin.Refer to shown in Figure 12, it shows the sectional view in B-B line direction embodiment illustrated in fig. 10, as shown in Figure 12, the two ends end cap 52 that two tube connectors 9 run through the lower header 5 of second layer heat exchanger fin is respectively communicated with the cavity of the lower header of second layer heat exchanger fin, because cold-producing medium flows into from the two ends of the lower header 5 of second layer heat exchanger fin, so flow into from one end of the lower header 5 of second layer heat exchanger fin relative to the cold-producing medium of previous embodiment, the cold-producing medium flowed into is more even, so do not arrange the distributing pipe 53 in previous embodiment in this embodiment in the lower header 5 of second layer heat exchanger fin.Certainly, also distributing pipe 53 can be set in the lower header 5 of second layer heat exchanger fin in other embodiments, two tube connectors 9 are communicated with distributing pipe 53 from both sides respectively, cold-producing medium after tube connector 9 enters distributing pipe 53, then is flowed into the inner chamber of lower header 5 of second layer heat exchanger fin by the through hole 531 on distributing pipe 53 tube wall.
In above embodiment, the lower header 3 of described ground floor heat exchanger fin is integrated with the lower header 5 of second layer heat exchanger fin, the upper header 4 of described ground floor heat exchanger fin is integrated with the upper header 6 of second layer heat exchanger fin, in other embodiments, described first heat exchanger fin and the second heat exchanger fin also can be separated from each other each self-forming.In previous embodiment, described tube connector 9 is communicated with from the end of the end of the upper header 4 of ground floor heat exchanger fin with the lower header 5 of second layer heat exchanger fin, in other embodiments, described tube connector 9 also can be except the end of the upper header 4 from ground floor heat exchanger fin is communicated with the end of the lower header 5 of second layer heat exchanger fin, the tube connector be communicated with the middle part of the lower header 5 of second layer heat exchanger fin from the middle part of the upper header 4 of ground floor heat exchanger fin can also be set, the quantity of tube connector is more, then cold-producing medium is more even from the distribution of the lower header 5 of upper header 4 to the second layer heat exchanger fin of ground floor heat exchanger fin.And the shape of described tube connector is also not limited to cylindrical shape tube connector, cross section also can be adopted to be the tube connector of triangle or other shapes such as rectangle or rhombus.Only for the explanation that the heat exchanger of bilayer carries out in previous embodiment, in other embodiments, this heat exchanger can be comprise three layers of heat exchanger fin or four layers of heat exchanger fin or more multi-layered heat exchanger fin.
Refer to shown in Figure 13 to Figure 15, it shows the structural representation of the 3rd embodiment of parallel-flow heat exchanger of the present invention, and wherein identical with previous embodiment element adopts identical label.In the 3rd embodiment, in the cavity of the lower header 3 of ground floor heat exchanger fin, the position of header cavity one end is provided with a dividing plate 311 and the lower header 3 of ground floor heat exchanger fin is separated into two mutual disconnected first chamber 312 and the second chambers 313, wherein the length of the first chamber 312 is longer than the second chamber 313.Second chamber upper surface of the lower header 3 of ground floor heat exchanger fin is provided with opening 314.The upper header 4 of ground floor heat exchanger fin comprises lengthwise cavity 41, and the two ends of cavity are provided with end cap 42, and the position of close one end of lengthwise cavity is provided with opening 43.Side on ground floor heat exchanger fin is provided with a tube connector 9.The opening 43 of cavity lower surface of the upper end insertion ground floor heat exchanger fin of described tube connector 9 is communicated with the cavity of the upper header 4 of ground floor heat exchanger fin, and the second chamber 312 that the length that the opening 314 on the lower header cavity of the lower end insertion ground floor heat exchanger fin of described tube connector 9 and the dividing plate 311 of the lower header 3 of ground floor heat exchanger fin separate is less is communicated with.Second chamber 312 of the lower header 3 of ground floor heat exchanger fin is communicated with by through hole 35 with the chamber of the lower header 5 of second layer heat exchanger fin.Such tube connector 9 and the second chamber 312 of lower header 3 side of ground floor heat exchanger fin form the upper header 4 and the interface channel of the lower header 5 of second layer heat exchanger fin that are communicated with ground floor heat exchanger fin jointly.Refrigerant inlet pipe 1 first chamber 312 longer with the length of the lower header 3 of ground floor heat exchanger fin is communicated with.During work, cold-producing medium enters the first chamber 312 of the lower header 3 of ground floor heat exchanger fin through inlet tube 1, then cold-producing medium enters the upper header 4 of ground floor heat exchanger fin from the bottom up through micro-channel flat 7, the cold-producing medium of the upper header 4 of ground floor heat exchanger fin enters the second chamber 313 of the lower header 3 of ground floor heat exchanger fin again through tube connector 9, cold-producing medium in second chamber 313 of the lower header 3 of ground floor heat exchanger fin enters in the cavity of lower header 5 of second layer heat exchanger fin by through hole 35, then the upper header 6 flowing into second layer heat exchanger fin from the lower header 5 of second layer heat exchanger fin from the bottom up through micro-channel flat 7 flows out from refrigerant outlet pipe 2.
Because header is cylindrical cavity, for making tube connector and header convenient welding, described tube connector 9 is that a cross section is roughly square micro-channel flat, but this tube connector 9 is different from the micro-channel flat 7 for dispelling the heat, the internal diameter of this tube connector 9 is larger than the internal diameter of the heat radiation micro-channel flat 7 of heat exchanger, or the circulation passage of this tube connector 9 is larger than the circulation passage of microchannel heat radiation micro-channel flat 7, also namely cold-producing medium is faster than flowing in microchannel heat radiation micro-channel flat at connection Bottomhole pressure in the present invention.This tube connector 9 also can be the communicating pipe in pipe or other any cross sections in other embodiments, and the corresponding opening 43 of upper header 4 cavity of ground floor heat exchanger fin and the opening 314 of the second chamber 313 of the lower header 3 of ground floor heat exchanger fin can be the openings of flat mouth or round mouth or other shapes.
Distributing pipe 34 as described in aforementioned first embodiment also can be set in the 3rd embodiment in the lower header 3 of ground floor heat exchanger fin, in the lower header 5 of second layer heat exchanger fin, also distributing pipe 53 can be set, other embodiments following also can arrange distributing pipe, and the concrete structure about distributing pipe no longer describes in detail.
In the 3rd embodiment, described tube connector 9 one end is the lengthwise surface of the upper header 4 running through ground floor heat exchanger fin, the other end run through the lower header 3 of ground floor heat exchanger fin in the second chamber 313 that dividing plate 311 is divided into, the second chamber 313 is connected with the lower header 5 of second layer heat exchanger fin.Also can be the lengthwise surface that the upper header 4 of ground floor heat exchanger fin is run through in the upper end of tube connector 9 in other embodiments, and the lower end of tube connector 9 is separated setting with the lower header 3 of ground floor heat exchanger fin, the lower end of tube connector 9 adopts the tube connector of the integral type be directly communicated with the lower header 5 of second layer heat exchanger fin in aforementioned first embodiment.
Refer to shown in Figure 16 and Figure 17, it shows the 4th embodiment of parallel-flow heat exchanger of the present invention, and identical element adopts the label identical with previous embodiment.In this embodiment, in the lower header 3 of ground floor heat exchanger fin, dividing plate 311 ＇, 315 ＇ are set respectively near two ends place, the lower header 3 of ground floor heat exchanger fin is separated into three mutual disconnected chamber 312 ＇, 313 ＇, 316 ＇ by this dividing plate 311 ＇, 315 ＇, and wherein first chamber 312 ＇ at two ends, left and right and the second chamber 313 ＇ of the 3rd chamber 316 ＇ ratio centre is short.Refrigerant inlet pipe 1 is arranged at the second chamber 313 ＇ in the middle of the lower header of ground floor heat exchanger fin.Second chamber 313 ＇ of the lower header 3 of ground floor heat exchanger fin is communicated with the upper header 4 of ground floor heat exchanger fin by micro-channel flat 7.First chamber 312 ＇ at lower header about 3 two ends of ground floor heat exchanger fin is communicated with by through hole (not shown) with the lower header 5 of second layer heat exchanger fin with the 3rd chamber 316 ＇.Two tube connectors 9 are set respectively in the both sides of ground floor heat exchanger fin.The upper header 4 of cavity and ground floor heat exchanger fin that the upper header 4 of ground floor heat exchanger fin is run through in one end of two tube connectors 9 is communicated with, the other end runs through the first chamber 312 ＇ and the 3rd chamber 316 ＇ at the two ends that dividing plate 311 ＇, 315 ＇ into the lower header 3 of ground floor heat exchanger fin are divided into respectively, and such two tube connectors 9 form with the 3rd chamber 316 ＇ the interface channel being communicated with the upper header 4 of ground floor heat exchanger fin and the lower header 5 of second layer heat exchanger fin with the first chamber 312 ＇ of lower header 3 both sides of ground floor heat exchanger fin jointly.Work schedule cryogen enters the second chamber 313 ＇ in the middle of the lower header 3 of ground floor heat exchanger fin through refrigerant inlet pipe 1, then cold-producing medium is moved into the upper header 4 of ground floor heat exchanger fin through micro-channel flat 7 from bottom to top from the second chamber 313 ＇ in the middle of the lower header 3 of ground floor heat exchanger fin, cold-producing medium flows into the first chamber 312 ＇ and the 3rd chamber 316 ＇ at lower header 3 two ends of ground floor heat exchanger fin downwards in the upper header 4 of ground floor heat exchanger fin through the tube connector 9 at two ends, cold-producing medium enters the lower header 5 of second layer heat exchanger fin through through hole by the first chamber 312 ＇ and the 3rd chamber 316 ＇ again, then cold-producing medium is flowed into the upper header 6 of second layer heat exchanger fin from the bottom up by the lower header 5 of second layer heat exchanger fin through micro-channel flat 7, then flow out through refrigerant outlet pipe 2.
Refer to shown in Figure 18 and Figure 19, the structural representation of its display fifth embodiment of the present invention, wherein identical element adopts identical label with other embodiments aforementioned.In this embodiment, the side of the upper header 6 of second layer heat exchanger fin arranges a dividing plate 611, and the upper header 6 of second layer heat exchanger fin to be divided into the length of disconnected first chamber 612 and the second chamber 613, first chamber 612 mutually longer than the length of the second chamber 613.First chamber 612 of the upper header of second layer heat exchanger fin is communicated with by micro-channel flat 7 with the lower header 5 of second layer heat exchanger fin, refrigerant outlet pipe 2 is arranged on the first chamber 612 of the upper header 6 of second layer heat exchanger fin, and the second chamber 613 is communicated with by through hole (not shown) with the upper header 4 of ground floor heat exchanger fin.A tube connector 9 is provided with in the side of second layer heat exchanger fin, one end of described tube connector 9 is run through in the second chamber 613 of the upper header 6 of second layer heat exchanger fin, the other end of tube connector 9 runs through in the lower header 5 of second layer heat exchanger fin, and such tube connector 9 forms the interface channel being connected header 4 and second layer heat exchanger fin lower header 5 on ground floor heat exchanger fin jointly with the second chamber 613 of upper header 6 side of second layer heat exchanger fin.Operationally cold-producing medium enters the lower header 3 of ground floor heat exchanger fin from refrigerant inlet pipe 1, then the upper header 4 of ground floor heat exchanger fin is moved to from bottom to top through micro-channel flat 7, cold-producing medium enters in the second chamber 613 of the upper header 6 of second layer heat exchanger fin again by through hole from the upper header 4 of ground floor heat exchanger fin, then cold-producing medium enters the lower header 5 of second layer heat exchanger fin through tube connector 9 from the second chamber 613 of the upper header 6 of second layer heat exchanger fin, cold-producing medium is moved in the first chamber 612 of the upper header 6 of second layer heat exchanger fin from the lower header 5 of second layer heat exchanger fin through micro-channel flat 7 more from the bottom up, finally flow out through refrigerant outlet pipe 2.
Refer to shown in Figure 20 and Figure 21, the structural representation of its display sixth embodiment of the present invention, wherein identical element adopts the label identical with other embodiments aforementioned.In this embodiment, the both sides of the upper header 6 of second layer heat exchanger fin arrange dividing plate 611 ＇, 614 ＇ respectively and the upper header 6 of second layer heat exchanger fin are divided into disconnected first chamber 612 ＇, the second chamber 613 ＇ and the 3rd chamber 615 ＇ mutually, wherein the first chamber 612 ＇ of two layers of heat exchanger fin both sides is communicated with by through hole (not shown) with the upper header 4 of ground floor heat exchanger fin with the 3rd chamber 615 ＇, refrigerant outlet pipe 2 is arranged at, the second chamber 613 ＇ in the middle of the upper header 6 of second layer heat exchanger fin.Second chamber 613 ＇ of the upper header 6 of second layer heat exchanger fin is communicated with the lower header 5 of second layer heat exchanger fin by micro-channel flat 7.Two tube connectors 9 are provided with in the both sides of second layer heat exchanger fin, in the first chamber 612 ＇ that one end of two tube connectors 9 runs through the upper header 6 of second layer heat exchanger fin respectively and the 3rd chamber 615 ＇, the other end of two tube connectors 9 runs through in the lower header 5 of second layer heat exchanger fin, and first chamber 612 ＇ at such two tube connectors 9 and upper header 6 two ends of second layer heat exchanger fin forms the interface channel of the lower header 5 of upper the header 4 and second layer heat exchanger fin second layer heat exchanger fin being communicated with ground floor heat exchanger fin jointly with the 3rd chamber 615 ＇.Operationally cold-producing medium enters the lower header 3 of ground floor heat exchanger fin from refrigerant inlet pipe 1, then the upper header 4 of ground floor heat exchanger fin is moved to from bottom to top through micro-channel flat 7, in the first chamber 612 ＇ that cold-producing medium enters the upper header 6 of second layer heat exchanger fin from the upper header 4 of ground floor heat exchanger fin through through hole more respectively and the 3rd chamber 615 ＇, then cold-producing medium enters the lower header 5 of second layer heat exchanger fin through two tube connectors 9, cold-producing medium is moved into the upper header 6 of second layer heat exchanger fin more from the bottom up through micro-channel flat 7 the second chamber 613 ＇ from the lower header 5 of second layer heat exchanger fin flows out through refrigerant outlet pipe 2.
Refer to shown in Figure 22 and Figure 23, the structural representation of its display seventh embodiment of the present invention, wherein identical element adopts the label identical with other embodiments aforementioned.In this embodiment, the centre of the lower header 3 of ground floor heat exchanger fin arranges two dividing plates 311 ", 312 " and the lower header 3 of ground floor heat exchanger fin is separated into disconnected first chamber 313 ", the second chamber 314 " and the 3rd chamber 315 mutually "; two refrigerant inlet pipes 1 are arranged at first chamber 313 " and the 3rd chamber 315 " at lower header 3 two ends of ground floor heat exchanger fin respectively, and the first chamber 313 " with the 3rd chamber 315 " of the lower header 3 of ground floor heat exchanger fin is communicated with the upper header 4 of ground floor heat exchanger fin by micro-channel flat 7.The second chamber 314 in the middle of the lower header of ground floor heat exchanger fin " is communicated with the lower header 5 of second layer heat exchanger fin by through hole.A tube connector 9 is provided with in the centre of ground floor heat exchanger fin, the cavity of the upper header 4 into ground floor heat exchanger fin is run through in one end of described tube connector 9, the other end runs through the second chamber 314 in the middle of into the lower header 3 of ground floor heat exchanger fin "; " be communicated with the lower header 5 of second layer heat exchanger fin, " common composition is connected the interface channel of the upper header 4 of ground floor heat exchanger fin and the lower header 5 of second layer heat exchanger fin to the second chamber 314 of the lower header 3 of ground floor heat exchanger fin for such tube connector 9 and the second chamber 314 in the middle of the lower header 3 of ground floor heat exchanger fin.During work, cold-producing medium enters the first chamber 313 " and the 3rd chamber 315 " of the lower header 3 of ground floor heat exchanger fin respectively through two refrigerant inlet pipes 1, then through micro-channel flat 7, from the first chamber 313 " and the 3rd chamber 315 " of the lower header 3 of ground floor heat exchanger fin, move from bottom to top enters the upper header 4 of ground floor heat exchanger fin to cold-producing medium from the lower header 3 of ground floor heat exchanger fin, then cold-producing medium flows into the second chamber 314 in the middle of the lower header of ground floor heat exchanger fin through running through the tube connector 9 into the upper header 4 of ground floor heat exchanger fin ", " lower header 5 of second layer heat exchanger fin is entered through through hole through the second chamber 314, then cold-producing medium to move upward through micro-channel flat from the lower header 5 of second layer heat exchanger fin and enters the upper header 6 of second layer heat exchanger fin, finally flow out through refrigerant outlet pipe 2.
Refer to shown in Figure 24 and Figure 25, the structural representation of its display eighth embodiment of the present invention, wherein identical element adopts the label identical with other embodiments aforementioned.In this embodiment, in the middle of the upper header 6 of second layer heat exchanger fin, two dividing plates 611 are set ", 612 " the upper header 6 of second layer heat exchanger fin being separated into disconnected first chamber 613 mutually ", second chamber 614 " and the 3rd chamber 615 ", two refrigerant outlet pipes 2 are arranged at first chamber 613 " and the 3rd chamber 615 " at upper header 6 two ends of second layer heat exchanger fin respectively, first chamber 613 " with the 3rd chamber 615 " of the upper header of second layer heat exchanger fin is communicated with the lower header 5 of second layer heat exchanger fin by micro-channel flat 7, the second chamber 614 in the middle of the upper header 6 of second layer heat exchanger fin " is communicated with by through hole (not shown) with the upper header 4 of ground floor heat exchanger fin.A tube connector 9 is set in the centre of second layer heat exchanger fin, the second chamber 614 in the middle of into the upper header 6 of second layer heat exchanger fin is run through in one end of described tube connector "; the other end runs through the lower header 5 into second layer heat exchanger fin, and " common formation is connected the interface channel of the upper header 4 of ground floor heat exchanger fin and the lower header 5 of second layer heat exchanger fin for such tube connector 9 and the second chamber 614 in the middle of the upper header of second layer heat exchanger fin.During work, cold-producing medium enters the lower header 3 of ground floor heat exchanger fin through refrigerant inlet pipe 1, then cold-producing medium moves from bottom to top through micro-channel flat 7 and enters the upper header 4 of ground floor heat exchanger fin from the lower header 3 of ground floor heat exchanger fin, cold-producing medium enters the second chamber 614 in the middle of the upper header 6 of the second layer heat exchanger fin be communicated with the upper header 4 of ground floor heat exchanger fin afterwards ", cold-producing medium " enters the lower header 5 of second layer heat exchanger fin through tube connector 9 from the second chamber 614 in the middle of the upper header 6 of second layer heat exchanger fin again, then cold-producing medium is moved into first chamber 613 " and the 3rd chamber 615 " at upper header 6 two ends of second layer heat exchanger fin more from bottom to top through micro-channel flat 7, finally flow out from refrigerant outlet pipe 2.
Heat exchanger of the present invention, because cold-producing medium flows all from bottom to top in the micro-channel flat of each layer heat exchanger fin, because the cold-producing medium lighter in weight of gaseous state, micro-channel flat upper end can be flow to quickly and evenly from micro-channel flat lower end, and the cold-producing medium of liquid state can first be piled up in header, and then enter into micro-channel flat passage, the liquid refrigerant entered in micro-channel flat can be extruded by gaseous refrigerant and more be posted by the chamber wall of micro-channel flat, more be conducive to carrying out heat exchange with the air outside micro-channel flat, effectively can improve the heat exchange property of 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 (11)
1. a heat exchanger, it comprises two-layer heat exchanger fin, multiple micro-channel flat that every layer of heat exchanger fin comprises lower header in lower header, upper header, connection and the fin be arranged between micro-channel flat, the lower header of ground floor heat exchanger fin is provided with flow of refrigerant port, the upper header of second layer heat exchanger fin is provided with flow of refrigerant port, between the upper header and the lower header of second layer heat exchanger fin of ground floor heat exchanger fin, is provided with interface channel.
2. heat exchanger as claimed in claim 1, is characterized in that: the circulation passage of described interface channel is greater than the circulation passage of described single micro-channel flat.
3. heat exchanger as claimed in claim 1 or 2, it is characterized in that: described header is the lengthwise cylindrical tube of closed at both ends, described interface channel is the tube connector being arranged at every layer of heat exchanger fin one end, the upper header of end cap and ground floor heat exchanger fin that the upper header of ground floor heat exchanger fin is run through in one end of described tube connector is communicated with, and the end cap that the other end of described tube connector runs through the lower header of second layer heat exchanger fin is communicated with the lower header of second layer heat exchanger fin.
4. heat exchanger as claimed in claim 1 or 2, it is characterized in that: described header is the lengthwise cylindrical tube of closed at both ends, described interface channel is two tube connectors being arranged at every layer of heat exchanger fin two ends, the upper header of end cap and ground floor heat exchanger fin that each tube connector runs through the upper header of ground floor heat exchanger fin is respectively communicated with, and the end cap that the other end runs through the lower header of second layer heat exchanger fin is respectively communicated with the lower header of second layer heat exchanger fin.
5. heat exchanger as claimed in claim 1 or 2, it is characterized in that: described header is the lengthwise cylindrical tube of closed at both ends, described interface channel is arranged at the side on ground floor heat exchanger fin, wherein the lower header of ground floor heat exchanger fin is provided with dividing plate and lower header is separated into the first chamber and the second chamber, refrigerant inlet pipe is arranged at the first chamber, first chamber is communicated with upper header by micro-channel flat, second chamber is communicated with the lower header of second layer heat exchanger fin, described interface channel comprises the second chamber of tube connector and described ground floor heat exchanger fin, one end of wherein said tube connector is communicated with the upper header of ground floor heat exchanger fin, described second chamber of the lower header of the other end and ground floor heat exchanger fin is through.
6. heat exchanger as claimed in claim 1 or 2, it is characterized in that: described header is the lengthwise cylindrical tube of closed at both ends, described interface channel is the both sides being arranged at ground floor heat exchanger fin respectively, the lower header of ground floor heat exchanger fin is provided with two dividing plates and lower header is separated into first chamber at two ends and the second chamber of the 3rd chamber and centre, wherein said second chamber is communicated with upper header by micro-channel flat, first chamber at two ends is communicated with the lower header of second layer heat exchanger fin with the 3rd chamber, described interface channel comprises the first chamber and the 3rd chamber of two tube connectors and described ground floor heat exchanger fin, one of them tube connector one end is communicated with the upper header of ground floor heat exchanger fin, first chamber of the other end and ground floor heat exchanger fin lower header is through, another tube connector one end is passed through and is communicated with the upper header of ground floor heat exchanger fin, 3rd chamber of the other end and ground floor heat exchanger fin lower header is through.
7. heat exchanger as claimed in claim 1 or 2, it is characterized in that: described header is the lengthwise cylindrical tube of closed at both ends, described interface channel is the side being arranged at second layer heat exchanger fin, the upper header of second layer heat exchanger fin is provided with dividing plate and the upper header of second layer heat exchanger fin is separated into the first chamber and the second chamber, refrigerant outlet pipe is arranged at described first chamber, described first chamber is communicated with by micro-channel flat with the lower header of second layer heat exchanger fin, second chamber of the upper header of described second layer heat exchanger fin is communicated with the upper header of ground floor heat exchanger fin, described interface channel comprises the second chamber of header on tube connector and second layer heat exchanger fin, described second chamber of its one end of described tube connector and second layer heat exchanger fin is through, the other end is communicated with the lower header of second layer heat exchanger fin.
8. heat exchanger as claimed in claim 1 or 2, it is characterized in that: described header is the lengthwise cylindrical tube of closed at both ends, described interface channel is the both sides being arranged at second layer heat exchanger fin, the upper header of second layer heat exchanger fin is provided with two dividing plates and the upper header of second layer heat exchanger fin is separated into first chamber at two ends and the second chamber of the 3rd chamber and centre, refrigerant outlet pipe is arranged at described second chamber, described second chamber is communicated with by micro-channel flat with the lower header of second layer heat exchanger fin, first chamber of the upper header of described second layer heat exchanger fin is communicated with the upper header of ground floor heat exchanger fin with the 3rd chamber, described interface channel comprises the first chamber and the 3rd chamber of header on two tube connectors and second layer heat exchanger fin, one end of one of them tube connector and the first chamber of second layer heat exchanger fin through, the other end is communicated with the lower header of second layer heat exchanger fin, one end of another tube connector and the 3rd chamber of second layer heat exchanger fin through, the other end is communicated with the lower header of second layer heat exchanger fin.
9. heat exchanger as claimed in claim 1 or 2, it is characterized in that: described header is the lengthwise cylindrical tube of closed at both ends, described tube connector is the centre being arranged at ground floor heat exchanger fin, the lower header of described ground floor heat exchanger fin is provided with two dividing plates and the lower header of ground floor heat exchanger fin is separated into first chamber at two ends and the second chamber of the 3rd chamber and centre, at the first chamber of the lower header of described ground floor heat exchanger fin and the 3rd chamber, refrigerant inlet pipe is set respectively, first chamber of the lower header of ground floor heat exchanger fin is communicated with the upper header of ground floor heat exchanger fin by micro-channel flat with the 3rd chamber, second chamber of the lower header of described ground floor heat exchanger fin is communicated with the lower header of second layer heat exchanger fin, described interface channel comprises the second chamber of tube connector and described ground floor heat exchanger fin, one end of described tube connector is communicated with the upper header of ground floor heat exchanger fin, second chamber of the lower header of the other end and described ground floor heat exchanger fin is through.
10. heat exchanger as claimed in claim 1 or 2, it is characterized in that: described header is the lengthwise cylindrical tube of closed at both ends, described interface channel is the centre being arranged at second layer heat exchanger fin, the upper header of described second layer heat exchanger fin is provided with two dividing plates and the upper header of second layer heat exchanger fin is separated into first chamber at two ends and the second chamber of the 3rd chamber and centre, at the first chamber of the upper header of described second layer heat exchanger and the 3rd chamber, refrigerant outlet pipe is set respectively, first chamber of the upper header of described second layer heat exchanger is communicated with by the lower header of micro-channel flat with described second layer heat exchanger with the 3rd chamber, second chamber of the upper header of described second layer heat exchanger fin is communicated with the upper header of ground floor heat exchanger fin, described interface channel comprises the second chamber of the upper header of tube connector and second layer heat exchanger fin, second chamber of one end of described tube connector and the upper header of described second layer heat exchanger fin is through, the lower header of the other end and described second layer heat exchanger fin is through.
11. 1 kinds of heat-exchange systems, it comprises the heat exchanger as described in claim 1-10, cold-producing medium flows into the lower header of ground floor heat exchanger fin from the flow of refrigerant port of the lower header of the ground floor heat exchanger fin of described heat exchanger, flow into the upper header of described ground floor heat exchanger fin through described micro-channel flat from the lower header of the ground floor heat exchanger fin of described heat exchanger, flow into the lower header of described second layer heat exchanger fin through described interface channel from the upper header of described ground floor heat exchanger fin, the upper header of described second layer heat exchanger fin is flowed into and the flow of refrigerant port through the upper header of second layer heat exchanger fin flows out through described micro-channel flat from the lower header of described second layer heat exchanger fin.
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| CN203454853U (en) * | 2013-08-31 | 2014-02-26 | 浙江创新汽车空调有限公司 | Double-layer parallel-flow type condenser |
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| CN113188273A (en) * | 2021-05-24 | 2021-07-30 | 浙江酷灵信息技术有限公司 | Evaporator with a heat exchanger |
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