CN103277942A - Parallel flow heat exchanger and air conditioner - Google Patents
Parallel flow heat exchanger and air conditioner Download PDFInfo
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- CN103277942A CN103277942A CN2013101787908A CN201310178790A CN103277942A CN 103277942 A CN103277942 A CN 103277942A CN 2013101787908 A CN2013101787908 A CN 2013101787908A CN 201310178790 A CN201310178790 A CN 201310178790A CN 103277942 A CN103277942 A CN 103277942A
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Abstract
The invention discloses a parallel flow heat exchanger and an air conditioner. The parallel flow heat exchanger comprises a closed collecting main pipe and a plurality of U-shaped flat pipes arranged in parallel, and the collecting main pipe is located on one side of the parallel flow heat exchanger and is arranged relative to two free ends of the flat pipes. A middle separating plate is arranged in the collecting main pipe in the length direction to divide the inner cavity of the collecting main pipe into two distribution chambers. The two free ends of the flat pipes are correspondingly communicated with the two distribution chambers respectively. Two guiding pipes which are used for refrigerant to flow in and out and are correspondingly communicated with the two distribution chambers are further connected outside the collecting main pipe. When heat exchange is carried out in a heating cycle, freezing medium flows in from one guiding pipe and flows out from the other guiding pipe, due to the fact that a freezing medium inlet and a freezing medium outlet are arranged in the same side, the wind blowing over subcooled liquid positions of the flat pipes can be heated by the high-temperature freezing medium of superheated steam of the flat pipes simultaneously, therefore, the problem that wind coming out from different positions of the heat exchanger is large in temperature difference is greatly reduced, the temperature of a low-temperature area and the temperature of a high-temperature area are balanced, and the comfort of the utilization of the air conditioner is improved.
Description
Technical field
The present invention relates to air-conditioning technical field, relate in particular to a kind of parallel-flow heat exchanger and air-conditioner.
Background technology
Parallel-flow heat exchanger is used widely in the air conditioning for automobiles field because of advantage in light weight, that heat exchange efficiency is high.At present, some domestic air conditionings and business air conditioner manufacturer begin to use the heat exchanger that micro-channel parallel flow heat exchanger substitutes traditional copper tube and fin formula, can also reduce the cost of air-conditioner when realizing the air-conditioner high energy efficiency.
The application mode of concurrent flow on indoor machine evaporation as shown in Figure 1 at present, two headers 10,50 parallel placements, this two header 10 is relative with 50 has a plurality of grooves, insert a flat tube 30 in each groove, one end of every flat tube inserts header 10, the other end inserts header 50, and it is Wavelike finned 60 that place in the gap between the flat tube 30, is respectively arranged with conduit 20,40 at two headers 10,50.
Parallel-flow evaporator is generally pressed flat tube vertical direction and is placed, and as shown in Figure 2, refrigerant enters from the header 10 that is in than upper/lower positions during refrigeration, flows through flat tube 30 then from bottom to top, is flowed out by the header 50 that is in last position at last; When heating, the flow of refrigerant direction is opposite, is flowed into by the header 50 that is in last position, flows through flat tube 30 then from top to bottom, flows out from the header 10 that is in than upper/lower positions at last.
In heating circulation, refrigerant flow direction as shown in Figure 2, cold-producing medium is divided into 3 regional I from top to bottom in flat tube, II, III, zone I is superheated steam zone, zone II is the gas-liquid two-phase district, zone III is the supercooled liquid tagma, the overheated refrigerant steam that compressor is discharged is assigned to the flat tube 30 after the header 50 that is in last position flows into, the fin 60 of flat tube 30 external weldings carries out forced-convection heat transfer with the wind that blows to fin 60 surfaces, thereby make the cold-producing medium in the flat tube 30 obtain condensation, cold-producing medium is in flat tube, the heat release while flowing from top to bottom, behind process II zone, the zone of the I among Fig. 2, cold-producing medium becomes the gas-liquid two-phase state by superheated steam, this moment, cold-producing medium began to emit gasification latent heat, after cold-producing medium has been put gasification latent heat, then all be condensed into liquid, and enter the III zone of flat tube 30 ends, can continue to send little heat at III zone cold-producing medium and become cold liquid, be pooled to the header 10 that is in than upper/lower positions then and flow out.Because be in high temperature at the I district of flat tube 30 cold-producing medium, cold-producing medium can discharge a large amount of gasification latent heats in the II district of flat tube 30, therefore flow through wind comparative heat all in I, II district of flat tube 30, and only in the III zone of flat tube 30, because cold-producing medium has been lower temperature and cold excessively, and it is also little with this regional wind-warm syndrome difference of flowing through, therefore the heat exchange amount is very little, and the wind-warm syndrome degree that blows out from the III zone of flat tube 30 is very low.Finally cause the wind part temperature that blows out from whole heat exchanger very high, a part of temperature is very low, causes the leaving air temp diversity ratio bigger, thereby has influenced the comfortableness that whole air-conditioner uses.
Summary of the invention
Main purpose of the present invention is to provide a kind of parallel-flow heat exchanger and air-conditioner, is intended to reduce air-conditioning leaving air temp difference, improves the comfortableness that air-conditioner uses.
In order to achieve the above object, the present invention proposes a kind of parallel-flow heat exchanger, comprising: the header of a sealing and the U-shaped flat tube of some parallel arranged, and described header is positioned at a side of described parallel-flow heat exchanger, and with respect to two free end settings of described flat tube; Be provided with median septum in the described header along its length, described header internal cavity is divided into two distribution cavity; Two free ends of described flat tube are corresponding respectively to be communicated with described two distribution cavity; Described header also is connected with outward for turnover refrigerant, corresponding two conduits that are communicated with described two distribution cavity.
Preferably, described median septum is divided into two distribution cavity up and down with described header internal cavity, arrange about two free ends of described flat tube, and two free-ended end faces does not flush; Wherein:
The described lateral wall of going up distribution cavity is provided with and supplies first groove of the free end insertion of weak point of described flat tube, and for second groove of described flat tube than long free end insertion; Described first groove and second groove arrange at interval;
Described median septum is provided with the 3rd groove that inserts for the long free end of described flat tube, described the 3rd groove and the described second groove consistency from top to bottom;
The short free end of described flat tube inserts described first groove and is communicated with last distribution cavity; The long free end of described flat tube inserts described second groove successively, the 3rd groove is communicated with following distribution cavity.
Preferably, the spacing between described first groove and second groove equals the bending part diameter of described flat tube center line or equals distance between the U-shaped flat tube two parallel portion center lines.(as a kind of embodiment, flat tube also can be folded into i.e. " ┌ ┐ " shape in 2 right angles.）
Preferably, two distribution cavity before and after described median septum is divided into described header internal cavity are arranged before and after the two free end correspondences of described flat tube; The free-ended sidewall of the described relatively flat tube of described front and back two distribution cavity is provided with groove; Two free ends of described flat tube insert described front and back two distribution cavity respectively by corresponding described groove.
Preferably, the cross section of described header is square, circular or oval.
Preferably, described header by up and down or front and back two parts body symmetry combine.
Preferably, described header comprises the cylindricality body that has described median septum and the blanking cover that is arranged on described body two ends; Described cylindricality body is that the body of D shape and body that a cross section is C shape combine by a cross section; Perhaps, described cylindricality body is that the body of D shape combines by two sections; Perhaps, described cylindricality body is that the sheet plate that the body and of C shape is arranged between two bodys combines by two sections.
Preferably, described two conduits are arranged on the described cylindricality body; Perhaps, described two conduits are arranged on the described blanking cover, and perhaps one is arranged on the described cylindricality body, and another root is arranged on the described blanking cover.
Preferably, in the bending zone of described flat tube and between the flat tube, be equipped with fin.
Preferably, described heat exchanger lead welding and shaping; The length of described flat tube is in the not isometric distribution of the zones of different of heat exchanger.
Preferably, the length of described fin is in the not isometric distribution of the zones of different of heat exchanger; That described heat exchanger is shaped as is trapezoidal, triangle or semicircle.
The present invention also proposes a kind of air-conditioner, comprises aforesaid parallel-flow heat exchanger.
A kind of parallel-flow heat exchanger and air-conditioner that the present invention proposes arrange header by the side at parallel-flow heat exchanger, and the U-shaped flat tube is set simultaneously, are provided with median septum in the header along its length, and the header internal cavity is divided into two distribution cavity; Two free ends of described flat tube are corresponding respectively to be communicated with two distribution cavity; Outside header, also be connected with for turnover refrigerant, corresponding two conduits that are communicated with two distribution cavity.When heating cycle heat exchange, cold-producing medium from the header wherein a conduit flow into, another conduit flows out from the header, because refrigerant inlet and outlet are arranged on the same side, the regional zone with higher temperatures of lower temperature that is about in the flat tube puts together, make the wind of blowing over flat tube subcooled liquid place can be heated by the high temperature refrigerant of flat tube superheated steam simultaneously, thereby can significantly reduce the problem that the wind-warm syndrome degree that comes out in the different places of heat exchanger differs greatly, make the temperature of low-temperature space and high-temperature region obtain balance, and then improved the comfortableness that air-conditioner uses.
Description of drawings
Fig. 1 is the structural representation of existing parallel-flow heat exchanger;
Fig. 2 is that existing parallel-flow heat exchanger heats the circulation theory schematic diagram;
Fig. 3 is the perspective view of parallel-flow heat exchanger first embodiment of the present invention;
Fig. 4 is the front view of parallel-flow heat exchanger shown in Figure 3;
Fig. 5 is header shown in Figure 3 and the assembling decomposing schematic representation of flat tube;
Fig. 6 is that parallel-flow heat exchanger embodiment of the present invention heats the circulation theory schematic diagram;
Fig. 7 is that parallel-flow heat exchanger embodiment of the present invention heats the circulation theory schematic diagram;
Fig. 8 a is the schematic diagram of header body among parallel-flow heat exchanger first embodiment of the present invention;
Fig. 8 b is the schematic diagram of header body among parallel-flow heat exchanger second embodiment of the present invention;
Fig. 8 c is the STRUCTURE DECOMPOSITION schematic diagram of header body among parallel-flow heat exchanger the 3rd embodiment of the present invention;
Fig. 8 d is the STRUCTURE DECOMPOSITION schematic diagram of header body among parallel-flow heat exchanger the 4th embodiment of the present invention;
Fig. 8 e is the STRUCTURE DECOMPOSITION schematic diagram of header body among parallel-flow heat exchanger the 5th embodiment of the present invention;
Fig. 8 f is the STRUCTURE DECOMPOSITION schematic diagram of header body among parallel-flow heat exchanger the 6th embodiment of the present invention;
Fig. 8 g is the STRUCTURE DECOMPOSITION schematic diagram of header body among parallel-flow heat exchanger the 7th embodiment of the present invention;
Fig. 9 is the structural representation of parallel-flow heat exchanger the 8th embodiment of the present invention;
Figure 10 is the structural representation of parallel-flow heat exchanger the 9th embodiment of the present invention.
In order to make technical scheme of the present invention clearer, clear, be described in further detail below in conjunction with accompanying drawing.
The specific embodiment
Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
As Fig. 3, Fig. 4 and shown in Figure 5, first embodiment of the invention proposes a kind of parallel-flow heat exchanger, comprise: the header 1 of a sealing and the U-shaped flat tube 6 of some parallel arranged, this U-shaped flat tube 6 is that a straight tube bending forms for 180 °, two free-ended end face 6A of the flat tube 6 after the bending are in the same side and not concordant with 6B, namely not in same plane, 6A is longer for end face shown in Fig. 5; In the bending zone of described flat tube 6 and between the flat tube 6, be equipped with fin 5; Described header 1 is positioned at a side of described parallel-flow heat exchanger, and with respect to two free end settings of described flat tube 6.
Described header 1 comprises the cylindricality body that has described median septum 1A and the blanking cover 4 that is arranged on described body two ends; Be provided with median septum 1A along its length in the cylindricality body of described header 1, described header 1 internal cavity is divided into two distribution cavity P1, P2.
Two free ends of described flat tube 6 are corresponding respectively to be communicated with described two distribution cavity P1, P2; Described header 1 outer also being connected with for turnover refrigerant, corresponding two conduits 2,3 that are communicated with described two distribution cavity P1, P2.
Particularly, in the present embodiment, the cross section of described header 1 is rectangle, and shown in Fig. 8 a, the body of described median septum 1A and header 1 is one-body molded; Described median septum 1A is divided into two distribution cavity P1, P2 up and down with described header 1 internal cavity, arrange about two free ends of described flat tube 6, and two free- ended end face 6A, 6B does not flush.
Wherein, the lateral wall of the described distribution cavity P1 of going up is provided with and supplies the first groove 1B of free end (the corresponding end of the end face 6B) insertion of weak point of described flat tube 6, and for the second groove 1B` of described flat tube 6 than long free end (the corresponding end of end face 6A) insertion; The described first groove 1B and the second groove 1B` equidistantly arrange at interval.
Described median septum 1A is provided with the 3rd groove 1C that inserts for the long free end of described flat tube 6, described the 3rd groove 1C and the described second groove 1B` be corresponding consistency from top to bottom one by one, and therefore to go up the quantity of the 3rd groove 1C that arranges be half of the groove that arranges on the lateral wall of last distribution cavity P1 to described median septum 1A.
The short free end of described flat tube 6 inserts the described first groove 1B and is communicated with last distribution cavity P1; The long free end of described flat tube 6 inserts the described second groove 1B`, the 3rd groove 1C successively and is communicated with following distribution cavity P2.
As a kind of embodiment, the spacing between the above-mentioned first groove 1B and the second groove 1B` can equal the bending part diameter of described flat tube 6 center lines.As another kind of embodiment, the flat tube of U-shaped also can be folded into i.e. " ┌ ┐ " shape in 2 right angles, and in this case, the spacing between the above-mentioned first groove 1B and the second groove 1B` then can equal the distance between 6 liang of parallel portion center lines of described flat tube.
The quantity of above-mentioned blanking cover 4 can be set to two at one at an end or an end as required, and present embodiment is two at an end, totally four.Header 1 body, median septum 1A and four blanking covers 4 are separated into up and down two distribution cavity P1 and P2 with header 1, and as shown in Figure 4, last distribution cavity P1 holds with the 6B of all flat tubes 6 and is communicated with; Following distribution cavity P2 is communicated with the 6A end of all flat tubes 6.On header 1, there is conduit 3 and 2 to be communicated with outside distribution cavity P1 and the following distribution cavity P2 respectively.Whole heat exchanger can adopt lead welding and shaping.
As Figure 6 and Figure 7, when heating cycle heat exchange, cold-producing medium flows into from conduit 3, enters the 6B end face place pipeline section of flat tube 6, flows out from conduit 2 behind the pipeline section of the 6A of flat tube 6 end face place afterwards.Cold-producing medium flowing as the 6 zone signals of flat tube among Fig. 6, Fig. 7 in flat tube 6, from flat tube 6 imports to outlet, flat tube 6 inner refrigerants are divided into three regional I, II, III, the high temperature refrigerant steam that flows into from conduit 3 enters into distribution cavity p1, assigned in the many flat tubes 6 by distribution cavity p1 again, the I of flat tube 6 zone cold-producing medium still is superheated steam again, arrived the II zone, cold-producing medium begins condensation, become the gas-liquid two-phase district, in this zone, cold-producing medium can discharge a large amount of gasification latent heats, arrived the III zone, the whole condensations of cold-producing medium also become subcooled liquid.
And because refrigerant inlet and outlet are arranged on the same side, soon the lower temperature zone (III zone) in the flat tube 6 puts together with the zone (I zone) of higher temperatures, make the wind of blowing over flat tube 6 subcooled liquid places can be heated by the high temperature refrigerant of flat tube 6 superheated steams simultaneously, each regional temperature of air-out is close to evenly, thereby can significantly reduce the problem that the wind-warm syndrome degree that comes out in the different places of heat exchanger differs greatly, make the temperature of low-temperature space and high-temperature region obtain balance, as shown in Figure 7, the wind that comes out from heat exchanger is the hot blast of temperature equalization, and then has improved the comfortableness that air-conditioner uses.
In addition, compare existing parallel-flow heat exchanger, the present embodiment heat exchanger makes that total obtains simplifying, and becomes compact because having only a header 1, saved raw material.
Need to prove that the shape of cross section of above-mentioned header 1 can also be other polygons, circle, ellipse etc.
Shown in Fig. 8 b, it is the schematic diagram of header body among parallel-flow heat exchanger second embodiment of the present invention.The difference of present embodiment and above-mentioned first embodiment is, the cross section of header described in the present embodiment 1 is circular, be provided with median septum 1A in the middle of the body of circle, header 1 inner chamber is separated into 2 distribution cavity P1 and P2, header 1 body and dividing plate are also as a whole among the figure.Other are identical with first embodiment.
Shown in Fig. 8 c, it is the schematic diagram of header body among parallel-flow heat exchanger the 3rd embodiment of the present invention.The difference of present embodiment and above-mentioned second embodiment is, header described in the present embodiment 1 is combined by front and back two parts body symmetry, the cross section of each part body is roughly E shape, leave breach 1B at the outer wall of each body, middle median septum 1A gap 1C, after closing up before and after two E shape bodys, form the groove that inserts for flat tube 6, also form distribution cavity P1, P2 simultaneously.Other are identical with first embodiment.
Shown in Fig. 8 d, it is the schematic diagram of header 1 body among parallel-flow heat exchanger the 4th embodiment of the present invention.The difference of present embodiment and above-mentioned second embodiment is that the cylindricality body of header described in the present embodiment 1 is that D shape body 11 and a cross section are that C shape body 12 combines up and down by a cross section.Offer the groove 1B that inserts for flat tube 6 on the face of cylinder of D shape body 11, flat face at D shape body 11 is that median septum 1A offers the groove 1C that inserts for flat tube 6, the D shape body 11 inner distribution cavity P1 that form, D shape body 11 closes up back median septum 1A and the C shape body 12 common distribution cavity P2 that form with C shape body 12.Other are identical with first embodiment.
Shown in Fig. 8 e, it is the schematic diagram of header 1 body among parallel-flow heat exchanger the 5th embodiment of the present invention.The difference of present embodiment and above-mentioned second embodiment is, the cylindricality body 1 of header described in the present embodiment 1 is that the body of D shape combines up and down by two sections.The groove 1B that inserts for flat tube 6 is offered on the last D shape body face of cylinder, and D shape body flat face is respectively to have the groove 1C that inserts for flat tube 6 on the median septum 1A up and down, and the groove 1C of D shape body is corresponding one by one up and down, up and down D shape body 1 each self-forming distribution cavity P1, P2.Other are identical with first embodiment.
Shown in Fig. 8 f, it is the schematic diagram of header 1 body among parallel-flow heat exchanger the 6th embodiment of the present invention.The difference of present embodiment and above-mentioned the 4th embodiment is that the cylindricality body of header described in the present embodiment 1 is that C shape body 11 and a cross section are that D shape body 12 combines up and down by a cross section.Top C shape body 11 has groove 1B, below the flat face 1A of D shape body 12 have groove 1B, below D shape body 12 self form distribution cavity P2, above C shape body 11 close up back flat face 1A and C shape body 11 composition distribution cavity P1 with following D shape body 12.Other are identical with the 4th embodiment.
Shown in Fig. 8 g, it is the schematic diagram of header 1 body among parallel-flow heat exchanger the 7th embodiment of the present invention.The difference of present embodiment and above-mentioned second embodiment is, the cylindricality body 1 of header described in the present embodiment 1 is that the sheet plate that the body and of C shape is arranged between two bodys combines by two sections.Two C shape bodys symmetry are up and down placed, and the sheet plate that is arranged between two bodys is median septum 1A, and last C shape pipe offers groove 1B, and median septum 1A offers groove 1C, after two C shape bodys and median septum 1A close up, is forming distribution cavity P1 and P2 up and down respectively.Other are identical with second embodiment.
Shown in Figure 9, it is for the schematic diagram of parallel-flow heat exchanger the 8th embodiment of the present invention.The difference of present embodiment and above-mentioned first embodiment is that two conduits 2,3 among first embodiment are arranged on the cylindricality body of header 1; Two conduits 2,3 are arranged on the described blanking cover 4 in the present embodiment.Other are identical with first embodiment.
In conjunction with Fig. 4 and Fig. 9, conduit 2,3 can carry out matched combined arbitrarily at header 1 and blanking cover 4, and such as being that a conduit 2 is arranged on the cylindricality body, another root conduit 3 is arranged on the blanking cover 4.
Shown in Figure 10, it is for the schematic diagram of parallel-flow heat exchanger the 9th embodiment of the present invention.The difference of present embodiment and above-mentioned first embodiment is that the length of the flat tube 6 among first embodiment is in the isometric distribution of the zones of different of heat exchanger, and the length of the flat tube 6 among the embodiment is in this isometric distribution of zones of different of heat exchanger.
Particularly, present embodiment also can be according to use occasion by changing flat tube 6 length of zones of different, realize different heat exchanger profiles, as shown in figure 10,1 is header 1,2,3 is conduit, 4 is that the blanking cover 4,5,51,52 of header 1 end is that different length fin 5,6,61,62 is different length flat tube 6, be provided with median septum 1A in the inside of header 11, median septum 1A, blanking cover 44 are divided into two distribution cavity p1 and p2 with header 11.Conduit 2 is communicated with distribution cavity p2, and conduit 3 is communicated with distribution cavity p1.Flat tube 6 bending 180o among the figure, its end face 6A is communicated with distribution cavity p2, and end face 6B is communicated with distribution cavity p1, present embodiment is by adopting flat tube 6 and the fin 5 of three kinds of length, realize that the heat exchanger shaped upper part is waveform, thereby can realize that air conditioner housing also does waviness, increase the attractive in appearance of air-conditioning product.Flat tube 6 by changing zones of different and the length of fin 5 can realize also that the heat exchanger shape is done in echelon, triangle and approximate semicircle etc.
Need to prove that in other embodiments, parallel-flow heat exchanger can also adopt following structure:
Two distribution cavity before and after described median septum 1A is divided into described header 1 internal cavity are arranged before and after the two free end correspondences of described flat tube 6; Two distribution cavity described relatively flat tube 6 free-ended sidewalls in described front and back are provided with groove; Two free ends of described flat tube 6 insert described front and back two distribution cavity respectively by corresponding described groove.Wherein.Two free-ended end faces of described flat tube 6 can flush mutually, also can not flush mutually.Other are similar to the various embodiments described above.
In addition, the present invention also proposes a kind of air-conditioner, comprises aforesaid parallel-flow heat exchanger.
A kind of parallel-flow heat exchanger and air-conditioner that the embodiment of the invention proposes, by the side at parallel-flow heat exchanger header 1 is set, U-shaped flat tube 6 is set simultaneously, is provided with median septum 1A in the header 1 along its length, header 1 internal cavity is divided into two distribution cavity P1, P2; Two free ends of described flat tube 6 are corresponding respectively to be communicated with two distribution cavity; Outside header 1, also be connected with for turnover refrigerant, corresponding two conduits 2,3 that are communicated with two distribution cavity P1, P2.When heating cycle heat exchange, cold-producing medium from the header 1 wherein a conduit 3 flow into, another conduit 2 flows out from the header 1, because refrigerant inlet and outlet are arranged on the same side, the regional zone with higher temperatures of lower temperature that is about in the flat tube 6 puts together, make the wind of blowing over flat tube 6 subcooled liquid places can be heated by the high temperature refrigerant of flat tube 6 superheated steams simultaneously, thereby can significantly reduce the problem that the wind-warm syndrome degree that comes out in the different places of heat exchanger differs greatly, make the temperature of low-temperature space and high-temperature region obtain balance, and then improved the comfortableness that air-conditioner uses.
Above-mentioned only is the preferred embodiments of the present invention; be not so limit claim of the present invention; every equivalent structure or flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical field, all in like manner be included in the scope of patent protection of the present invention.
Claims (12)
1. a parallel-flow heat exchanger is characterized in that, comprising: the header of a sealing and the U-shaped flat tube of some parallel arranged, and described header is positioned at a side of described parallel-flow heat exchanger, and with respect to two free end settings of described flat tube; Be provided with median septum in the described header along its length, described header internal cavity is divided into two distribution cavity; Two free ends of described flat tube are corresponding respectively to be communicated with described two distribution cavity; Described header also is connected with outward for turnover refrigerant, corresponding two conduits that are communicated with described two distribution cavity.
2. parallel-flow heat exchanger according to claim 1 is characterized in that, described median septum is divided into two distribution cavity up and down with described header internal cavity, arrange about two free ends of described flat tube, and two free-ended end faces does not flush; Wherein:
The described lateral wall of going up distribution cavity is provided with and supplies first groove of the free end insertion of weak point of described flat tube, and for second groove of described flat tube than long free end insertion; Described first groove and second groove arrange at interval;
Described median septum is provided with the 3rd groove that inserts for the long free end of described flat tube, described the 3rd groove and the described second groove consistency from top to bottom;
The short free end of described flat tube inserts described first groove and is communicated with last distribution cavity; The long free end of described flat tube inserts described second groove successively, the 3rd groove is communicated with following distribution cavity.
3. parallel-flow heat exchanger according to claim 2 is characterized in that, the spacing between described first groove and second groove equals the bending part diameter of described flat tube center line or equals distance between the U-shaped flat tube two parallel portion center lines.
4. parallel-flow heat exchanger according to claim 1 is characterized in that, two distribution cavity before and after described median septum is divided into described header internal cavity are arranged before and after the two free end correspondences of described flat tube; The free-ended sidewall of the described relatively flat tube of described front and back two distribution cavity is provided with groove; Two free ends of described flat tube insert described front and back two distribution cavity respectively by corresponding described groove.
5. according to each described parallel-flow heat exchanger among the claim 1-4, it is characterized in that the cross section of described header is square, circular or oval.
6. parallel-flow heat exchanger according to claim 5 is characterized in that, described header by up and down or front and back two parts body symmetry combine.
7. according to claim 2 or 3 described parallel-flow heat exchangers, it is characterized in that described header comprises the cylindricality body that has described median septum and the blanking cover that is arranged on described body two ends; Described cylindricality body is that the body of D shape and body that a cross section is C shape combine by a cross section; Perhaps, described cylindricality body is that the body of D shape combines by two sections; Perhaps, described cylindricality body is that the sheet plate that the body and of C shape is arranged between two bodys combines by two sections.
8. parallel-flow heat exchanger according to claim 7 is characterized in that, described two conduits are arranged on the described cylindricality body; Perhaps, described two conduits are arranged on the described blanking cover; Perhaps one is arranged on the described cylindricality body, and another root is arranged on the described blanking cover.
9. according to each described parallel-flow heat exchanger among the claim 1-4, it is characterized in that, in the bending zone of described flat tube and between the flat tube, be equipped with fin.
10. parallel-flow heat exchanger according to claim 9 is characterized in that, described heat exchanger lead welding and shaping; The length of described flat tube is in the not isometric distribution of the zones of different of heat exchanger.
11. parallel-flow heat exchanger according to claim 10 is characterized in that, the length of described fin is in the not isometric distribution of the zones of different of heat exchanger; That described heat exchanger is shaped as is trapezoidal, triangle or semicircle.
12. an air-conditioner is characterized in that, comprises each described parallel-flow heat exchanger among the claim 1-11.
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| CN201310178790.8A CN103277942B (en) | 2013-05-14 | 2013-05-14 | Parallel flow heat exchanger and air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104596153A (en) * | 2013-10-31 | 2015-05-06 | 杭州三花微通道换热器有限公司 | Micro-channel heat exchanger |
| WO2017071355A1 (en) * | 2015-10-28 | 2017-05-04 | 丹佛斯微通道换热器（嘉兴）有限公司 | Heat exchanger |
| CN109869967A (en) * | 2017-12-01 | 2019-06-11 | 开利公司 | Multi-temperature transport refrigeration system |
| CN114576884A (en) * | 2020-11-30 | 2022-06-03 | 丹佛斯有限公司 | Heat exchanger and air conditioning system |
| WO2022166234A1 (en) * | 2021-02-08 | 2022-08-11 | 广东美的暖通设备有限公司 | Heat exchanger, electric control box and air conditioning system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104596153A (en) * | 2013-10-31 | 2015-05-06 | 杭州三花微通道换热器有限公司 | Micro-channel heat exchanger |
| CN104596153B (en) * | 2013-10-31 | 2018-09-28 | 杭州三花微通道换热器有限公司 | Micro-channel heat exchanger |
| WO2017071355A1 (en) * | 2015-10-28 | 2017-05-04 | 丹佛斯微通道换热器（嘉兴）有限公司 | Heat exchanger |
| CN109869967A (en) * | 2017-12-01 | 2019-06-11 | 开利公司 | Multi-temperature transport refrigeration system |
| CN114576884A (en) * | 2020-11-30 | 2022-06-03 | 丹佛斯有限公司 | Heat exchanger and air conditioning system |
| WO2022166234A1 (en) * | 2021-02-08 | 2022-08-11 | 广东美的暖通设备有限公司 | Heat exchanger, electric control box and air conditioning system |
| CN114909831A (en) * | 2021-02-08 | 2022-08-16 | 广东美的暖通设备有限公司 | Heat exchanger, electric control box and air conditioning system |
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| CN103277942B (en) | 2015-06-03 |
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