The specific embodiment
In order to make technological means of the present invention, creation characteristic, to reach purpose and effect is easy to understand,, further set forth the present invention below in conjunction with embodiment.
Embodiment 1:
Parallel flow heat exchanger as shown in Figure 3 is the evaporimeter that an automobile uses.Comprise two parallel flow heat exchanger unit that are superimposed, be convenient to describe, it is defined as the first parallel flow heat crosspoint 100 and the second parallel flow heat crosspoint 200.
The first parallel flow heat crosspoint 100 comprises top header 110, bottom header 120 and the some flat tubes that are arranged in parallel 130 that are communicated with top header 110 and bottom header 120, the shape of flat tube 130 is with the Chinese invention patent " a kind of aluminium-made extrusion slender section " of the applicant in application on April 21st, 2006, its application number is 200610025898.3, notification number is CN1967135, is not described in detail at this.
The second parallel flow heat crosspoint 200 comprises top header 210, bottom header 220 and the some flat tubes that are arranged in parallel 230 that are communicated with top header 210 and bottom header 220, the shape of flat tube 130 is with the Chinese invention patent " a kind of aluminium-made extrusion slender section " of the applicant in application on April 21st, 2006, its application number is 200610025898.3, notification number is CN1967135, is not described in detail at this.Flat tube 230 can be to be connected as a single entity the description in 200610025898.3 inventions as application number with 130, forms double flat tube.
Directly be not communicated with between the top header 110 and 210 of the first parallel flow heat crosspoint 100 and the second parallel flow heat crosspoint 200, and part directly is communicated with mutually between the bottom header 120 and 220 of the first parallel flow heat crosspoint 100 and the second parallel flow heat crosspoint 200, and the top header 210 of the top header 110 of such first parallel flow heat crosspoint 100, bottom header 120 and flat tube 130 and the second parallel flow heat crosspoint 200, bottom header 220 and flat tube 230 constitute the whole heat exchange runner of this embodiment.The import 300 of the heat exchange medium of whole heat exchange runner and outlet 400 are arranged on the side pipe wall of top header 110 of the first parallel flow heat crosspoint 100.
In the top header 110 of the first parallel flow heat crosspoint 100 and bottom header 120, respectively be provided with a barrier plate 111 and 121, wherein barrier plate 111 and 121 is divided into N1 current drainage road and N2+N3 current drainage road with the runner in the first parallel flow heat crosspoint 100, be provided with a barrier plate 221 in the bottom header 220 of the second parallel flow heat crosspoint 200, barrier plate 221 is divided into N1+N2 current drainage road and N3 current drainage road with the second parallel flow heat crosspoint 200.N1 current drainage road in the first parallel flow heat crosspoint 100 and the second parallel flow heat crosspoint 200 by the first parallel flow heat crosspoint 100 bottom header 120 and the opening 122 between the bottom header 220 of two parallel flow heat crosspoints 200 link up, the N3 current drainage road in the first parallel flow heat crosspoint 100 and the second parallel flow heat crosspoint 200 by the first parallel flow heat crosspoint 100 bottom header 120 and the opening 123 between the bottom header 220 of the second parallel flow heat crosspoint 200 link up.The flow direction of cold-producing medium in whole runner is: entered by import 300 in the N1 current drainage road of top header 110 of the first parallel flow heat crosspoint 100, flat tube 130 along the N1 current drainage road of the first parallel flow heat crosspoint 100 flows to the bottom header 120 of the first parallel flow heat crosspoint 100 downwards, laterally flow in the bottom header 220 of the second parallel flow heat crosspoint 200 by opening 122 again, flat tube 230 along the N1+N2 current drainage road of the second parallel flow heat crosspoint 200 rises in the top header 210 of the second parallel flow heat crosspoint 200, again along the axial flow of top header 210, flow to the N3 current drainage road of the second parallel flow heat crosspoint 200, flat tube 230 along the N3 current drainage road of the second parallel flow heat crosspoint 200 drops in the bottom header 220 of the second parallel flow heat crosspoint 200 again, then laterally flow in the N2+N3 current drainage road of the first parallel flow heat crosspoint 100 by opening 123, flat tube 130 along the N2+N3 current drainage road of the first parallel flow heat crosspoint 100 rises in the top header 110 of the first parallel flow heat crosspoint 100, is flowed out by outlet 400.Whole cold-producing medium at flow process through four runners, i.e. N1 current drainage road, N1+N2 current drainage road, N3 current drainage road, N2+N3 current drainage road.Cold-producing medium progressively increases at the volume of four runners of flow process, the volume that is each runner is: N1 current drainage road<N1+N2 current drainage road<N3 current drainage road<N2+N3 current drainage road, the volume in N1+N2 current drainage road is greater than the 40-50% of N1 current drainage road volume, the volume in N3 current drainage road is greater than the 40-50% of N1+N2 current drainage road volume, the volume in N2+N3 current drainage road is greater than the 40-50% of N3 current drainage road volume, and the volume in N2+N3 current drainage road is 2.5 times of N1 current drainage road volume.
As can be seen from Figure 3, cold-producing medium has only N1+N2 at the bottom header 220 of the second parallel flow heat crosspoint 200 at most along the length of bottom header 220 axial flow, and be N2+N3 along the length of top header 210 axial flow at the top header 210 of the second parallel flow heat crosspoint 200, because the length of N3 is greater than N1, thus cold-producing medium at the top header 210 of the second parallel flow heat crosspoint 200 along the length of top header 210 axial flow greater than the bottom header 220 of the second parallel flow heat crosspoint 200 length along bottom header 220 axial flow.When being provided with, can make cold-producing medium long as much as possible along the length of top header 210 axial flow at the top header 210 of the second parallel flow heat crosspoint 200, account for cold-producing medium top header 110 and 210 along the length of top header 110 and 210 axial flow with at bottom header 120 and 220 along 70% of the length sum of bottom header 120 and 220 axial flow, and at the bottom header 220 of the second parallel flow heat crosspoint 200 the only possible weak point of length along bottom header 220 axial flow, account for cold-producing medium top header 110 and 210 along the length of top header 110 and 210 axial flow with at bottom header 120 and 220 along 30% of the length sum of bottom header 120 and 220 axial flow.
Embodiment 2:
Parallel flow heat exchanger as shown in Figure 4 is the evaporimeter that an automobile uses.Comprise two parallel flow heat exchanger unit that are superimposed, be convenient to describe, it is defined as the first parallel flow heat crosspoint 100 and the second parallel flow heat crosspoint 200.
The first parallel flow heat crosspoint 100 comprises top header 110, bottom header 120 and the some flat tubes that are arranged in parallel 130 that are communicated with top header 110 and bottom header 120, and the shape of flat tube 130 is with embodiment 1.
The second parallel flow heat crosspoint 200 comprises top header 210, bottom header 220, mozzle 240 and the some flat tubes that are arranged in parallel 230 that are communicated with top header 210 and bottom header 220, and the shape of flat tube 130 is with embodiment 1.Flat tube 230 can be to be connected as a single entity the description in 200610025898.3 inventions as application number with 130, forms double flat tube.
Directly be not communicated with between the top header 110 and 210 of the first parallel flow heat crosspoint 100 and the second parallel flow heat crosspoint 200, and part directly is communicated with mutually between the bottom header 120 and 220 of the first parallel flow heat crosspoint 100 and the second parallel flow heat crosspoint 200, and the top header 210 of the top header 110 of such first parallel flow heat crosspoint 100, bottom header 120 and flat tube 130 and the second parallel flow heat crosspoint 200, bottom header 220 and flat tube 230 constitute the whole heat exchange runner of this embodiment.The import 300 of the heat exchange medium of whole heat exchange runner is arranged on the side wall of top header 210 of the second parallel flow heat crosspoint 200, and outlet 400 is arranged on the side wall of top header 110 of the first parallel flow heat crosspoint 100.
In the bottom header 120 of the first parallel flow heat crosspoint 100, be provided with in two barrier plates 121 and 124, two barrier plates 121 and 124 the bottom header 120 and be divided into N1 current drainage road, N2 current drainage road, N3+N4 current drainage road the first parallel flow heat crosspoint 100; In the top header 110 of the first parallel flow heat crosspoint 100, be provided with a barrier plate 111, be divided into N1+N2 current drainage road and N3+N4 current drainage road in the top header 110 of barrier plate 111 with the first parallel flow heat crosspoint 100.In the bottom header 220 of the second parallel flow heat crosspoint 200, be provided with in two barrier plates 221 and 222, two barrier plates 221 and 222 the bottom header 220 and be divided into N1 current drainage road, N2+N3 current drainage road, N4 current drainage road the second parallel flow heat crosspoint 200; In the top header 210 of the second parallel flow heat crosspoint 200, be provided with a barrier plate 211, be divided into N1 current drainage road and N2+N3+N4 current drainage road in the top header 210 of barrier plate 211 with the second parallel flow heat crosspoint 200.Mozzle is inserted in the top header 210 of the second parallel flow heat crosspoint 200, and its entrance point taps into mouth 300, and the port of export is positioned at the N1 current drainage road of the top header 210 of the second parallel flow heat crosspoint 200.
N1 current drainage road in the first parallel flow heat crosspoint 100 and the second parallel flow heat crosspoint 200 by the first parallel flow heat crosspoint 100 bottom header 120 and the opening 122 between the bottom header 220 of two parallel flow heat crosspoints 200 link up, the N2+N3 current drainage road in the N2 current drainage road of the first parallel flow heat crosspoint 100 and the second parallel flow heat crosspoint 200 by the first parallel flow heat crosspoint 100 bottom header 120 and the opening 123 between the bottom header 220 of the second parallel flow heat crosspoint 200 link up.N4 current drainage road in the N3+N4 current drainage road of the first parallel flow heat crosspoint 100 and the second parallel flow heat crosspoint 200 by the first parallel flow heat crosspoint 100 bottom header 120 and the opening 125 between the bottom header 220 of the second parallel flow heat crosspoint 200 link up.
The flow direction of cold-producing medium in whole runner is: enter into mozzle 240 by import 300, enter into the N1 current drainage road of the top header 210 of second parallel flow heat exchanger 200 by mozzle 240, flat tube 230 along the N1 current drainage road of the second parallel flow heat crosspoint 200 flows to the bottom header 220 of the second parallel flow heat crosspoint 200 downwards, laterally flow in the N1 current drainage road of bottom header 120 of the first parallel flow heat crosspoints 100 by opening 122 again, rise in the N1 current drainage road of top header 110 of the first parallel flow heat crosspoint 100 along the flat tube 130 in the N1 current drainage road of the first parallel flow heat crosspoint 100, again along the axial flow of top header 110, flow in the N1 current drainage road of the first parallel flow heat crosspoint, 100 top headers 110, flow to N2 current drainage road from N1 current drainage road along the first parallel flow heat crosspoint, 100 top headers 110.Flow into cold-producing medium in the N2 current drainage road of the first parallel flow heat crosspoint, 100 top headers 110 and flow in the N2 current drainage road of bottom header of the first parallel flow heat crosspoint 100, laterally flow in the N2+N3 current drainage road of bottom header 220 of the second parallel flow heat crosspoint 200 by opening 123 again along the flat tube 130 in the N2 current drainage road of the first parallel flow heat crosspoint 100.The cold-producing medium that enters in the N2+N3 current drainage road of bottom header 220 of the second parallel flow heat crosspoint 200 flows upward in the N2+N3 current drainage road of top header 210 of the second parallel flow heat crosspoint 200 along the flat tube 230 in the N2+N3 current drainage road of the second parallel flow heat crosspoint 200.The cold-producing medium that enters in the N2+N3 current drainage road of top header 210 of the second parallel flow heat crosspoint 200 flows in the N4 current drainage road of top header 210 along the top header 210 of the second parallel flow heat crosspoint 200, is flow to downwards in the N4 current drainage road of bottom header 220 of the second parallel flow heat crosspoint 200 by the flat tube 230 in the N4 current drainage road of the second parallel flow heat crosspoint 200 again.The cold-producing medium that enters in the N4 current drainage road of bottom header 220 of the second parallel flow heat crosspoint 200 laterally flows in the N4 current drainage road of bottom header 120 of the first parallel flow heat crosspoints 100 through opening 125, then the flat tube 130 in the N4 current drainage road of the first parallel flow heat crosspoint 100 rises in the N3+N4 current drainage road of top header 110 of the first parallel flow heat crosspoint 100, is flowed out by outlet 400.
Whole cold-producing medium at flow process through six runners, i.e. N1 current drainage road, N1 current drainage road, N2 current drainage road, N2+N3 current drainage road, N4 current drainage road, N4+N3 current drainage road.Cold-producing medium is in flow process, the volume of next four runners progressively increases, the volume that is each runner is: N1 current drainage road<N2 current drainage road<N2+N3 current drainage road<N4 current drainage road<N4+N3 current drainage road, the volume in N2 current drainage road is greater than the 40-50% of N1 current drainage road volume, the volume in N2+N3 current drainage road is greater than the 40-50% of N2 current drainage road volume, the volume in N4 current drainage road is greater than the 40-50% of N2+N3 current drainage road volume, the volume in N4+N3 current drainage road is greater than the 40-50% of N4 current drainage road volume, and the volume in N4+N3 current drainage road is 2.5 times of N1 current drainage road volume.
As can be seen from Figure 4, cold-producing medium is at the bottom header 220 of the second parallel flow heat crosspoint 200 and almost do not have axial flowing in the bottom header 120 of the first parallel flow heat crosspoint 100, and the length along top header 210 axial flow is N4+N3+N2+N1+N2+N3+N4 in the top header 210 of the second parallel flow heat crosspoint 200, length along top header 110 axial flow in the top header 110 of the first parallel flow heat crosspoint 100 is N1+N2+N4, therefore be far longer than cold-producing medium the bottom header 220 of the second parallel flow heat crosspoint 200 and in the bottom header 120 of the first parallel flow heat crosspoint 100 length of axial flow.
When being provided with, can make cold-producing medium at the top header 210 of the second parallel flow heat crosspoint 200 along the length of top header 210 axial flow and long as much as possible along the length of top header 110 axial flow at the top header 110 of the first parallel flow heat crosspoint 100, account for cold-producing medium top header 110 and 210 along the length of top header 110 and 210 axial flow with at bottom header 120 and 220 along 70% of the length sum of bottom header 120 and 220 axial flow, and at the bottom header 220 of the second parallel flow heat crosspoint 200 along the length of bottom header 220 axial flow with at the bottom header 120 of the first parallel flow heat crosspoint 100 the only possible weak point of length along bottom header 120 axial flow, account for cold-producing medium top header 110 and 210 along the length of the header 110 at top and 210 axial flow with at bottom header 120 and 220 along the length sum of bottom header 120 and 220 axial flow below 30%.
In order to prevent superheating phenomenon, N3 current drainage road and this section of N4 current drainage road of being positioned at top header 210 at mozzle 240 are offered porose, replenish cold-producing medium by the N3 current drainage road and the N4 current drainage road of this hole in top header 210, wherein the cold-producing medium that replenishes to N4 current drainage road accounts for the 15-20% of whole cold-producing medium total amount.
Embodiment 3
Parallel flow heat exchanger as shown in Figure 5.Comprise three parallel flow heat exchanger unit that are superimposed, be convenient to describe, it is defined as the first parallel flow heat crosspoint 100, the second parallel flow heat crosspoint 200, the 3rd parallel flow heat crosspoint 500.
The first parallel flow heat crosspoint 100 comprises top header 110, bottom header 120 and the some flat tubes that are arranged in parallel 130 that are communicated with top header 110 and bottom header 120, and the shape of flat tube 130 is with embodiment 1.
The second parallel flow heat crosspoint 200 comprises top header 210, bottom header 220 and the some flat tubes that are arranged in parallel 230 that are communicated with top header 210 and bottom header 220, and the shape of flat tube 230 is with embodiment 1.
The 3rd parallel flow heat crosspoint 500 comprises top header 510, bottom header 520 and the some flat tubes that are arranged in parallel 530 that are communicated with top header 510 and bottom header 520, and the shape of flat tube 530 is with flat tube 130 and 230.
Flat tube 530,230 can be to be connected as a single entity the description in 200610025898.3 inventions as application number with 130, forms three rows of flat pipes.
Part directly is communicated with between the top header 110 and 210 of the first parallel flow heat crosspoint 100 and the second parallel flow heat crosspoint 200, and part directly is communicated with between the bottom header 120 and 220 of the first parallel flow heat crosspoint 100 and the second parallel flow heat crosspoint 200.Directly be not communicated with between the top header 210 and 510 of the second parallel flow heat crosspoint 200 and the 3rd parallel flow heat crosspoint 500, part directly is communicated with between the bottom header 220 and 520 of the second parallel flow heat crosspoint 200 and the 3rd parallel flow heat crosspoint 500.The top header 510 of the top header 210 of the top header 110 of such first parallel flow heat crosspoint 100, bottom header 120 and flat tube 130, the second parallel flow heat crosspoint 200, bottom header 220 and flat tube 230, the 3rd parallel flow heat crosspoint 500, bottom header 520 and flat tube 530 constitute the whole heat exchange runner of this embodiment.The import 300 of the heat exchange medium of whole heat exchange runner and outlet 400 are arranged on the side pipe wall of bottom header 110 of the first parallel flow heat crosspoint 100.
In the top header 110 of the first parallel flow heat crosspoint 100 and bottom header 120, respectively be provided with a barrier plate 111 and 121, wherein barrier plate 111 and 121 is divided into N1 current drainage road and N2+N3+N4 current drainage road with the runner in the first parallel flow heat crosspoint 100, respectively be provided with a barrier plate 211 and 221 in the top header 210 of the second parallel flow heat crosspoint 200 and the bottom header 220, barrier plate 211 and 221 runners with the second parallel flow heat crosspoint 200 are divided into N1+N2 current drainage road and N3+N4 current drainage road; Be provided with a barrier plate 521 in the bottom header 520 of the 3rd parallel flow heat crosspoint 500, barrier plate 521 is divided into N1+N2+N3 current drainage road and N4 current drainage road with the runner in the bottom header 520 of the 3rd parallel flow heat crosspoint 200.
N1+N2 current drainage roads in N1 current drainage road in the top header 110 of the first parallel flow heat crosspoint 100 and the top header of the second parallel flow heat crosspoint 200 210 by the first parallel flow heat crosspoint 100 top header 110 and the opening 126 between the top header 210 of the second parallel flow heat crosspoint 200 link up; N3+N4 current drainage roads in N2+N3+N4 current drainage road in the top header 110 of the first parallel flow heat crosspoint 100 and the top header of the second parallel flow heat crosspoint 200 210 by the first parallel flow heat crosspoint 100 top header 110 and the opening 127 between the top header 210 of the second parallel flow heat crosspoint 200 link up.N1+N2+N3 current drainage roads in N1+N2 current drainage road in the bottom header 220 of the second parallel flow heat crosspoint 200 and the bottom header of the 3rd parallel flow heat crosspoint 500 520 by the second parallel flow heat crosspoint 100 bottom header 220 and the opening 223 between the bottom header 520 of the 3rd parallel flow heat crosspoint 500 link up; N4 current drainage roads in N3+N4 current drainage road in the bottom header 220 of the second parallel flow heat crosspoint 200 and the bottom header of the 3rd parallel flow heat crosspoint 500 520 by the second parallel flow heat crosspoint 100 bottom header 220 and the opening 224 between the bottom header 520 of the 3rd parallel flow heat crosspoint 500 link up.
The flow direction of cold-producing medium in whole runner is: entered by import 300 in the N1 current drainage road of bottom header 110 of the first parallel flow heat crosspoint 100, flow upward in the N1 current drainage road of top header 110 of the first parallel flow heat crosspoint 100 along the flat tube 130 in the N1 current drainage road of the first parallel flow heat crosspoint 100, laterally flow in the N1+N2 current drainage road of top header 210 of the second parallel flow heat crosspoints 200 by opening 126 again.Flow in the N1+N2 current drainage road of top header 210 of the second parallel flow heat crosspoint 200 cold-producing medium again the flat tube 230 in the N1+N2 current drainage road of the second parallel flow heat crosspoint 200 flow in the N1+N2 current drainage road of bottom header 220 of the second parallel flow heat crosspoint 200, then laterally flow in the N1+N2+N3 current drainage road of the bottom header 520 in the 3rd heat exchange units 500 by opening 223.The flat tube 530 of cold-producing medium in the N1+N2+N3 current drainage road of the 3rd heat exchange unit 500 that flows in the N1+N2+N3 current drainage road of the bottom header 520 in the 3rd heat exchange unit 500 upwards flows in the N1+N2+N3 current drainage road of the top header 510 in the 3rd heat exchange unit 500.Flow in the N4 current drainage road that axially flows to the top header 510 in the 3rd heat exchange unit 500 of the top header 510 of cold-producing medium in the 3rd heat exchange unit 500 in the N1+N2+N3 current drainage road of the top header 510 in the 3rd heat exchange unit 500, then the flat tube in the N4 current drainage road of the 3rd heat exchange unit 500 530 flows into downwards in the N4 current drainage road of bottom header 520 of the 3rd heat exchange units 500.Flow in cold-producing medium in the N4 current drainage road of bottom header 520 of the 3rd heat exchange unit 500 flows into the second parallel flow heat crosspoint 200 by opening 224 the N3+N4 current drainage road of bottom header 220, the flat tube 230 in the N3+N4 current drainage road of the second parallel flow heat crosspoint 200 upwards flow in the N3+N4 current drainage road in the top header 210 of the second parallel flow heat crosspoint 200 again.Flow in cold-producing medium in the N3+N4 current drainage road in the top header 210 of the second parallel flow heat crosspoint 200 flow into the first parallel flow heat crosspoint 100 by opening 127 the N2+N3+N4 current drainage road of top header 110.The cold-producing medium that flow in the N2+N3+N4 current drainage road of top header 110 of the first parallel flow heat crosspoint 100 flow into downwards in the N2+N3+N4 current drainage road of bottom header 120 of the first parallel flow heat crosspoint 100 along the flat tube 130 in the N2+N3+N4 current drainage road of the first parallel flow heat crosspoint 100 again, is flowed out by outlet 400.
Whole cold-producing medium at flow process through six runners, i.e. N1 current drainage road, N1+N2 current drainage road, N1+N2+N3 current drainage road, N4 current drainage road, N4+N3 current drainage road, N4+N3+N2 current drainage road.Cold-producing medium is in flow process, the volume of six runners progressively increases, the volume that is each runner is: N1 current drainage road<N1+N2 current drainage road<N1+N2+N3 current drainage road<N4 current drainage road<N4+N3 current drainage road<N4+N3+N2 current drainage road, the volume in N1+N2 current drainage road is greater than the 40-50% of N1 current drainage road volume, the volume in N1+N2+N3 current drainage road is greater than the 40-50% of N1+N2 current drainage road volume, the volume in N4 current drainage road is greater than the 40-50% of N1+N2+N3 current drainage road volume, the volume in N4+N3 current drainage road is greater than the 40-50% of N4 current drainage road volume, N4+N3+N2 current drainage road is greater than the 40-50% of N4+N3 current drainage road volume, and the volume in N4+N3+N2 current drainage road is 2.5 times of N1 current drainage road volume.
As can be seen from Figure 5, cold-producing medium only in the bottom header 520 of the 3rd parallel flow heat crosspoint 500 and top header 510 by along the 3rd parallel flow heat crosspoint 500 axial flow, in the first parallel flow heat crosspoint 100 and the second concurrent flow heat-exchange tube, 200 essentially no axial flow.Cold-producing medium is N1+N2+N3 in the length of bottom header 520 axial flow of the 3rd parallel flow heat crosspoint 500, and the length that axially flows in top header 510 is N4, since N1+N2+N3 current drainage road volume<N4 current drainage road volume, therefore, N1+N2+N3 length<N4 length.By along the 3rd parallel flow heat crosspoint 500 axial flow
When being provided with, can make cold-producing medium length along top header 510 axial flow in the top header 510 of the 3rd parallel flow heat crosspoint 500 long as much as possible, account for cold-producing medium at the length of top header 510 axial flow and more than 70% of length sum in bottom header 520 axial flow; Cold-producing medium is short as much as possible along the length of bottom header 520 axial flow at the bottom header 520 of the 3rd parallel flow heat crosspoint 500, accounts for cold-producing medium at the length of top header 510 axial flow and below 30% of length sum in bottom header 520 axial flow.
Embodiment 4
Parallel flow heat exchanger as shown in Figure 6.Comprise three parallel flow heat exchanger unit that are superimposed, be convenient to describe, it is defined as the first parallel flow heat crosspoint 100, the second parallel flow heat crosspoint 200, the 3rd parallel flow heat crosspoint 500.
The first parallel flow heat crosspoint 100 comprises top header 110, bottom header 120 and the some flat tubes that are arranged in parallel 130 that are communicated with top header 110 and bottom header 120, and the shape of flat tube 130 is with embodiment 1.
The second parallel flow heat crosspoint 200 comprises top header 210, bottom header 220 and the some flat tubes that are arranged in parallel 230 that are communicated with top header 210 and bottom header 220, and the shape of flat tube 230 is with embodiment 1.
The 3rd parallel flow heat crosspoint 500 comprises top header 510, bottom header 520 and the some flat tubes that are arranged in parallel 530 that are communicated with top header 510 and bottom header 520, and the shape of flat tube 530 is with flat tube 130 and 230.
Flat tube 530,230 can be to be connected as a single entity the description in 200610025898.3 inventions as application number with 130, forms three rows of flat pipes.
Part directly is communicated with between the top header 110 and 210 of the first parallel flow heat crosspoint 100 and the second parallel flow heat crosspoint 200, directly is not communicated with between the bottom header 120 and 220 of the first parallel flow heat crosspoint 100 and the second parallel flow heat crosspoint 200.Directly be not communicated with between the top header 210 and 510 of the second parallel flow heat crosspoint 200 and the 3rd parallel flow heat crosspoint 500, part directly is communicated with between the bottom header 220 and 520 of the second parallel flow heat crosspoint 200 and the 3rd parallel flow heat crosspoint 500.The top header 510 of the top header 210 of the top header 110 of such first parallel flow heat crosspoint 100, bottom header 120 and flat tube 130, the second parallel flow heat crosspoint 200, bottom header 220 and flat tube 230, the 3rd parallel flow heat crosspoint 500, bottom header 520 and flat tube 530 constitute the whole heat exchange runner of this embodiment.The import 300 of the heat exchange medium of whole heat exchange runner is arranged on the end tube wall of top header 210 of the second parallel flow heat crosspoint 200, and outlet 400 is arranged on the end tube wall of top header 110 of the first parallel flow heat crosspoint 100.
Be provided with a barrier plate 111 in the top header 110 of the first parallel flow heat crosspoint 100, barrier plate 111 is divided into N1+N2 current drainage road and N3+N4 current drainage road with the runner in the top header 110 of the first parallel flow heat crosspoint 100; Respectively be provided with a barrier plate 211 and 221 in the top header 210 of the second parallel flow heat crosspoint 200 and bottom header 220, barrier plate 211 and 221 runners with the second parallel flow heat crosspoint 200 are divided into N1 current drainage road and N2+N3+N4 current drainage road; Be provided with a barrier plate 521 in the bottom header 520 of the 3rd parallel flow heat crosspoint 500, barrier plate 521 is divided into N1+N2+N3 current drainage road and N4 current drainage road with the runner in the bottom header 520 of the 3rd parallel flow heat crosspoint 200.
N2+N3+N4 current drainage roads in N3+N4 current drainage road in the top header 110 of the first parallel flow heat crosspoint 100 and the top header of the second parallel flow heat crosspoint 200 210 by the first parallel flow heat crosspoint 100 top header 110 and the opening 128 between the top header 210 of the second parallel flow heat crosspoint 200 link up; N1+N2+N3 current drainage roads in N1 current drainage road in the bottom header 210 of the second parallel flow heat crosspoint 200 and the bottom header of the 3rd parallel flow heat crosspoint 500 510 by the second parallel flow heat crosspoint 200 bottom header 210 and the opening 225 between the bottom header 510 of the 3rd parallel flow heat crosspoint 500 link up.N4 current drainage roads in N2+N3+N4 current drainage road in the bottom header 220 of the second parallel flow heat crosspoint 200 and the bottom header of the 3rd parallel flow heat crosspoint 500 520 by the second parallel flow heat crosspoint 100 bottom header 220 and the opening 226 between the bottom header 520 of the 3rd parallel flow heat crosspoint 500 link up.
The flow direction of cold-producing medium in whole runner is: entered by import 300 in the N1 current drainage road of top header 210 of the second parallel flow heat crosspoint 200, flow to downwards in the N1 current drainage road of bottom header 220 of the second parallel flow heat crosspoint 200 along the flat tube 230 in the N1 current drainage road of the second parallel flow heat crosspoint 200, laterally flow in the N1 current drainage road of bottom header 520 of the 3rd parallel flow heat crosspoints 500 by opening 225 again.Flow into cold-producing medium in the N1 current drainage road of bottom header 520 of the 3rd parallel flow heat crosspoint 500 again in the N2+N3 current drainage road of the bottom header 520 that axially flows to the 3rd parallel flow heat crosspoint 500 of the 3rd parallel flow heat crosspoint 500.Flowing to the flat tube 530 of cold-producing medium in the N2+N3 current drainage road of the 3rd parallel flow heat crosspoint 500 in the N2+N3 current drainage road of bottom header 520 of the 3rd parallel flow heat crosspoint 500 flows upward in the N2+N3 current drainage road of top header 510 of the 3rd parallel flow heat crosspoint 500.Flow in cold-producing medium in the N2+N3 current drainage road of top header 510 of the 3rd parallel flow heat crosspoint 500 axially flows to the 3rd parallel flow heat crosspoint 500 along the top header 510 of the 3rd parallel flow heat crosspoint 500 the N4 current drainage road of top header 510.Flow to the flat tube 530 of cold-producing medium in the N4 current drainage road of the 3rd parallel flow heat crosspoint 500 in the N4 current drainage road of top header 510 of the 3rd parallel flow heat crosspoint 500 and flow to downwards in the N4 current drainage road of bottom header 520 of the 3rd parallel flow heat crosspoint 500, flow in the N2+N3+N4 current drainage road in the bottom header 220 of the second parallel flow heat crosspoint 200 by opening 226 again.Flow in the N2+N3+N4 current drainage road of top header 210 that the flat tube 230 of cold-producing medium in the N2+N3+N4 current drainage road of the second parallel flow heat crosspoint 200 in the N2+N3+N4 current drainage road in the bottom header 220 of the second parallel flow heat crosspoint 200 upwards flow into the second parallel flow heat crosspoint 200.Flow in cold-producing medium in the N2+N3+N4 current drainage road of top header 210 of the second parallel flow heat crosspoint 200 laterally flow into the first parallel flow heat crosspoint 100 by opening 128 the N3+N4 current drainage road of top header 110, then the flat tube 130 in the N3+N4 current drainage road of the first parallel flow heat crosspoint 100 flow into downwards in the N3+N4 current drainage road in the bottom header 120 of the first parallel flow heat crosspoint 100.Flow into cold-producing medium in the N3+N4 current drainage road in the bottom header 120 of the first parallel flow heat crosspoint 100 along the axial flow of the bottom header 120 of the first parallel flow heat crosspoint 100 in the N1+N2 current drainage road of the bottom header 120 of the first parallel flow heat crosspoint 100, flat tube 130 in the N1+N2 current drainage road of the first parallel flow heat crosspoint 100 upwards flows in the N1+N2 current drainage road of top header 110 of the first parallel flow heat crosspoint 100 again, flows out from exporting 400.
Whole cold-producing medium at flow process through six runners, i.e. N1 current drainage road, N1+N2+N3 current drainage road, N4 current drainage road, N2+N3+N4 current drainage road, N4+N3 current drainage road, N1+N2 current drainage road.Cold-producing medium is in flow process, the volume of six runners progressively increases, the volume that is each runner is: N1 current drainage road<N1+N2+N3 current drainage road<N4 current drainage road<N2+N3+N4 current drainage road<N4+N3 current drainage road<N1+N2 current drainage road, the volume in N1+N2+N3 current drainage road is greater than the 40-50% of N1 current drainage road volume, the volume in N4 current drainage road is greater than the 40-50% of N1+N2+N3 current drainage road volume, the volume in N2+N3+N4 current drainage road is greater than the 40-50% of N4 current drainage road volume, the volume in N2+N3+N4 current drainage road is greater than the 40-50% of N4 current drainage road volume, 2 (N4+N3) current drainage road is greater than the 40-50% of N2+N3+N4 current drainage road volume, the volume in 2 (N1+N2) current drainage road is greater than the 40-50% of the volume in 2 (N3+N4) current drainage road, and 2 (N1+N2) are 2.5 times of N1 current drainage road volume.
As can be seen from Figure 6, cold-producing medium is at the top header 220 of the second parallel flow heat crosspoint 200, the bottom header 520 of the 3rd parallel flow heat crosspoint 500, axially flow in the bottom header 120 of the top header 510 and the first parallel flow heat crosspoint 100 and the top header 110, wherein cold-producing medium is at the top header 220 of the second parallel flow heat exchanger unit 100, the top header 510 of the 3rd parallel flow heat crosspoint 500, the axial flow length sum of the top header 110 of the first parallel flow heat crosspoint 100 is N1+N4+N1+N2, bottom header 520 at the 3rd parallel flow heat crosspoint 500, the axial flow length sum of the bottom header 120 of the first parallel flow heat crosspoint 100 is N2+N3+N3+N4, because the length of N1〉length of N3, so N1+N4+N1+N2〉N2+N3+N3+N4.
When being provided with, can make the top header 220 of cold-producing medium in the second parallel flow heat exchanger unit 100, the top header 510 of the 3rd parallel flow heat crosspoint 500, the axial flow length sum of the top header 110 of the first parallel flow heat crosspoint 100 is that the length of N1+N4+N1+N2 is long as much as possible, accounts for the top header 220 of cold-producing medium at the second parallel flow heat crosspoint 200, the bottom header 520 of the 3rd parallel flow heat crosspoint 500, axial more than 70% of length of flow sum in the bottom header 120 of the top header 510 and the first parallel flow heat crosspoint 100 and the top header 110; Cold-producing medium is short as much as possible at the axial flow length sum N2+N3+N3+N4 of the bottom header 120 of the bottom header 520 of the 3rd parallel flow heat crosspoint 500, the first parallel flow heat crosspoint 100, accounts for cold-producing medium axial below 30% of length of flow sum in the bottom header 120 of bottom header 520, top header 510 and the first parallel flow heat crosspoint 100 of the top header 220 of the second parallel flow heat crosspoint 200, the 3rd parallel flow heat crosspoint 500 and top header 110.
Embodiment 5
Parallel flow heat exchanger as shown in Figure 7.Comprise three parallel flow heat exchanger unit that are superimposed, be convenient to describe, it is defined as the first parallel flow heat crosspoint 100, the second parallel flow heat crosspoint 200, the 3rd parallel flow heat crosspoint 500.
The first parallel flow heat crosspoint 100 comprises top header 110, bottom header 120 and the some flat tubes that are arranged in parallel 130 that are communicated with top header 110 and bottom header 120, and the shape of flat tube 130 is with embodiment 1.
The second parallel flow heat crosspoint 200 comprises top header 210, bottom header 220 and the some flat tubes that are arranged in parallel 230 that are communicated with top header 210 and bottom header 220, and the shape of flat tube 230 is with embodiment 1.
The 3rd parallel flow heat crosspoint 500 comprises top header 510, bottom header 520 and the some flat tubes that are arranged in parallel 530 that are communicated with top header 510 and bottom header 520, and the shape of flat tube 530 is with flat tube 130 and 230.
Flat tube 530,230 can be to be connected as a single entity the description in 200610025898.3 inventions as application number with 130, forms three rows of flat pipes.
Part directly is communicated with between the top header 110 and 210 of the first parallel flow heat crosspoint 100 and the second parallel flow heat crosspoint 200, directly is not communicated with between the bottom header 120 and 220 of the first parallel flow heat crosspoint 100 and the second parallel flow heat crosspoint 200.Directly be not communicated with between the top header 210 and 510 of the second parallel flow heat crosspoint 200 and the 3rd parallel flow heat crosspoint 500, part directly is communicated with between the bottom header 220 and 520 of the second parallel flow heat crosspoint 200 and the 3rd parallel flow heat crosspoint 500.The top header 510 of the top header 210 of the top header 110 of such first parallel flow heat crosspoint 100, bottom header 120 and flat tube 130, the second parallel flow heat crosspoint 200, bottom header 220 and flat tube 230, the 3rd parallel flow heat crosspoint 500, bottom header 520 and flat tube 530 constitute the whole heat exchange runner of this embodiment.The import 300 of the heat exchange medium of whole heat exchange runner is arranged on the end tube wall of top header 210 of the second parallel flow heat crosspoint 200, and outlet 400 is arranged on the end tube wall of bottom header 120 of the first parallel flow heat crosspoint 100.
Respectively be provided with a barrier plate 211 and 221 in the top header 210 of the second parallel flow heat crosspoint 200 and bottom header 220, barrier plate 211 and 221 runners with the second parallel flow heat crosspoint 200 are divided into N1 current drainage road and N2+N3 current drainage road; Be provided with a barrier plate 521 in the bottom header 520 of the 3rd parallel flow heat crosspoint 500, barrier plate 521 is divided into N1+N2 current drainage road and N3 current drainage road with the runner in the bottom header 520 of the 3rd parallel flow heat crosspoint 200.
N2+N3 current drainage roads in N3 current drainage road in the top header 110 of the first parallel flow heat crosspoint 100 and the top header of the second parallel flow heat crosspoint 200 210 by the first parallel flow heat crosspoint 100 top header 110 and the opening 129 between the top header 210 of the second parallel flow heat crosspoint 200 link up; N1+N2 current drainage roads in N1 current drainage road in the bottom header 210 of the second parallel flow heat crosspoint 200 and the bottom header of the 3rd parallel flow heat crosspoint 500 510 by the second parallel flow heat crosspoint 200 bottom header 210 and the opening 227 between the bottom header 510 of the 3rd parallel flow heat crosspoint 500 link up, the N3 current drainage roads in the N2+N3 current drainage road in the bottom header 210 of the second parallel flow heat crosspoint 200 and the bottom header 510 of the 3rd parallel flow heat crosspoint 500 by the second parallel flow heat crosspoint 200 bottom header 210 and the opening 229 between the bottom header 510 of the 3rd parallel flow heat crosspoint 500 link up.
The flow direction of cold-producing medium in whole runner is: entered by import 300 in the N1 current drainage road of top header 210 of the second parallel flow heat crosspoint 200, flow to downwards in the N1 current drainage road of bottom header 220 of the second parallel flow heat crosspoint 200 along the flat tube 230 in the N1 current drainage road of the second parallel flow heat crosspoint 200, laterally flow in the N1+N2 current drainage road of bottom header 520 of the 3rd parallel flow heat crosspoints 500 by opening 227 again.Flow in the N1+N2 current drainage road of top header 510 that the flat tube 530 of cold-producing medium in the N1+N2 current drainage road of the 3rd parallel flow heat crosspoint 500 in the N1+N2 current drainage road of bottom header 520 of the 3rd parallel flow heat crosspoint 500 upwards flow into the 3rd parallel flow heat crosspoint 500, again in the N3 current drainage road of the top header 510 that axially flows to the 3rd parallel flow heat crosspoint 500 of the 3rd parallel flow heat crosspoint 500.Flowing to the flat tube 530 of cold-producing medium in the N3 current drainage road of the 3rd parallel flow heat crosspoint 500 in the N3 current drainage road of top header 510 of the 3rd parallel flow heat crosspoint 500 flows to downwards in the N3 current drainage road of bottom header 520 of the 3rd parallel flow heat crosspoint 500.Flow in cold-producing medium in the N3 current drainage road of bottom header 520 of the 3rd parallel flow heat crosspoint 500 laterally flow into the second concurrent flow heat exchange unit 200 by runner pipe 229 the N2+N3 current drainage road of bottom header 220.Flow in the N2+N3 current drainage road of top header 210 that the flat tube 230 of cold-producing medium in the N2+N3 current drainage road of the second concurrent flow heat exchange unit 200 in the N2+N3 current drainage road of bottom header 220 of the second concurrent flow heat exchange unit 200 upwards flow into the second concurrent flow heat exchange unit 200.Flow in cold-producing medium in the N2+N3 current drainage road of top header 210 of the second concurrent flow heat exchange unit 200 laterally flow into the first parallel flow heat crosspoint 100 by opening 129 the N2+N3 current drainage road of top header 110.Flow in cold-producing medium in the N2+N3 current drainage road of top header 110 of the first parallel flow heat crosspoint 100 flow into the first parallel flow heat crosspoint 100 along the top header 110 of the first parallel flow heat crosspoint 100 the N1 current drainage road of top header 110, flat tube 130 in the N1 current drainage road of the first parallel flow heat crosspoint 100 flow into downwards in the N1 current drainage road of bottom header 120 of the first parallel flow heat crosspoint 100 again, is flowed out by outlet 400.
Whole cold-producing medium at flow process through five runners, i.e. N1 current drainage road, N1+N2 current drainage road, N3 current drainage road, N2+N3 current drainage road, N1+N2+N3 current drainage road.Cold-producing medium is in flow process, the volume of five runners progressively increases, the volume that is each runner is: N1 current drainage road<N1+N2 current drainage road<N3 current drainage road<N2+N3 current drainage road<N1+N2+N3 current drainage road, the volume in N1+N2 current drainage road is greater than the 40-50% of N1 current drainage road volume, the volume in N3 current drainage road is greater than the 40-50% of N1+N2 current drainage road volume, the volume in N2+N3 current drainage road is greater than the 40-50% of N3 current drainage road volume, the volume in N1+N2+N3 current drainage road is greater than the 40-50% of N2+N3 current drainage road volume, and N1+N2+N3 is 2.5 times of N1 current drainage road volume.
As can be seen from Figure 7, cold-producing medium is at the top header 220 of the second parallel flow heat crosspoint 200, the bottom header 520 of the 3rd parallel flow heat crosspoint 500, axially flow in the bottom header 120 of the top header 510 and the first parallel flow heat crosspoint 100 and the top header 110, wherein cold-producing medium is at the top header 220 of the second parallel flow heat exchanger unit 100, the top header 510 of the 3rd parallel flow heat crosspoint 500, the axial flow length sum of the top header 110 of the first parallel flow heat crosspoint 100 is N1+N3+N3+N2, bottom header 520 at the 3rd parallel flow heat crosspoint 500, the axial flow length sum of the bottom header 120 of the first parallel flow heat crosspoint 100 is N1+N2+N1, because the length of 2N3〉length of N1, so N1+N3+N3+N2〉N1+N2+N1.
When being provided with, can make the top header 220 of cold-producing medium in the second parallel flow heat exchanger unit 100, the top header 510 of the 3rd parallel flow heat crosspoint 500, the length of the axial flow length sum N1+N3+N3+N2 of the top header 110 of the first parallel flow heat crosspoint 100 is long as much as possible, accounts for the top header 220 of cold-producing medium at the second parallel flow heat crosspoint 200, the bottom header 520 of the 3rd parallel flow heat crosspoint 500, axial more than 70% of length of flow sum in the bottom header 120 of the top header 510 and the first parallel flow heat crosspoint 100 and the top header 110; Cold-producing medium is short as much as possible at the axial flow length sum N1+N2+N1 of the bottom header 120 of the bottom header 520 of the 3rd parallel flow heat crosspoint 500, the first parallel flow heat crosspoint 100, accounts for cold-producing medium axial below 30% of length of flow sum in the bottom header 120 of bottom header 520, top header 510 and the first parallel flow heat crosspoint 100 of the top header 220 of the second parallel flow heat crosspoint 200, the 3rd parallel flow heat crosspoint 500 and top header 110.
3 layers of parallel-flow evaporator performance test curve map that Fig. 8 makes for the present invention.Operating condition of test is as follows among the figure:
Evaporator inlet dry-bulb temperature: 40 ℃;
Evaporator inlet wet-bulb temperature: 27.7 ℃;
Expansion valve inlet temperature: 40 ℃;
Expansion valve inlet pressure: 1.6Mpa;
Evaporator outlet pressure: 0.21Mpa;
The evaporator outlet degree of superheat: 5 ℃.
Result of the test is referring to Fig. 8 and table 1:
Table 1
|
Air quantity |
Refrigerating capacity |
Windage |
Evaporator outlet dry-bulb temperature |
Evaporator outlet wet-bulb temperature |
Flow resistance |
Refrigerant flow |
|
M
3/h
|
kw |
pa |
℃ |
℃ |
Mpa |
Kg/h |
Parallel-flow evaporator |
283.55 |
5.372 |
51.09 |
6.76 |
8.04 |
0.099 |
154.31 |
Parallel-flow evaporator |
390.7 |
7.063 |
77.18 |
10.88 |
9.40 |
0.138 |
186.86 |
Parallel-flow evaporator |
488.57 |
8.096 |
103.36 |
12.86 |
11.38 |
0.174 |
221.11 |
By above-mentioned experiment, the parallel-flow evaporator of three stratotype formulas is compared with same size is stacked under identical operating mode and identical air quantity condition, and refrigerating capacity is when air quantity (especially low) quite.
W220 * H240 * T38 that Fig. 9 makes for the present invention, 4 channel parallel flow evaporator device performance test curve maps.Operating condition of test is as follows among the figure:
Evaporator inlet dry-bulb temperature: 38 ℃;
Evaporator inlet wet-bulb temperature: 26.4 ℃;
Expansion valve inlet temperature: 57.2 ℃;
Expansion valve inlet pressure: 1.662Mpa;
Evaporator outlet pressure: 0.193Mpa;
The evaporator outlet degree of superheat: 3 ℃.
Result of the test is referring to Fig. 9 and table 2:
Table 2
|
Air quantity |
Refrigerating capacity |
Windage |
Evaporator outlet dry-bulb temperature |
Evaporator outlet wet-bulb temperature |
Flow resistance |
Refrigerant flow |
|
M
3/h
|
kw |
pa |
℃ |
℃ |
Mpa |
Kg/h |
Parallel-flow evaporator |
277.74 |
4.645 |
52.66 |
10.04 |
0.034 |
0.034 |
103.62 |
Parallel-flow evaporator |
464.24 |
7.342 |
125.53 |
10.37 |
0.081 |
0.081 |
192.35 |
Parallel-flow evaporator |
554.75 |
8.431 |
151.41 |
10.99 |
0.086 |
0.086 |
209.45 |
By above-mentioned experiment, W220 * H240 * T38,4 channel parallel flow evaporator devices, it is identical to be equivalent to front face area, and thickness is 60 laminated evaporator.
W242 * H255 * T38 that Figure 10 makes for the present invention, 6 channel parallel flow evaporator device performance test curve maps.Operating condition of test is as follows among the figure:
Evaporator inlet dry-bulb temperature: 27 ℃;
Evaporator inlet wet-bulb temperature: 19.5 ℃;
Expansion valve inlet pressure: 1.52Mpa; Degree of supercooling: 5 ℃;
Evaporator inlet pressure: 1.662Mpa;
The evaporator outlet degree of superheat: 5 ℃.
Result of the test is referring to Figure 10 and table 3:
Table 3
|
Air quantity |
Refrigerating capacity |
Windage |
Flow resistance |
|
M
3/h
|
kw |
pa |
Mpa |
Parallel-flow evaporator |
450 |
4.854 |
116.2 |
0.123 |
By above-mentioned experiment, W242 * H255 * T38, the refrigeration of 6 channel parallel flow evaporator devices, it is identical to be equivalent to front face area, and thickness is 69 laminated evaporator.
Parallel flow heat exchanger runner of the present invention can be used for making evaporimeter, especially is used for making the automobile parallel-flow evaporator.Can also be used to making heat pump type air-conditioner heat exchanger.As heat pump type air conditioner evaporimeter and condenser.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.