CN1629590A - Heat exchanging apparatus - Google Patents
Heat exchanging apparatus Download PDFInfo
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- CN1629590A CN1629590A CN 200410095131 CN200410095131A CN1629590A CN 1629590 A CN1629590 A CN 1629590A CN 200410095131 CN200410095131 CN 200410095131 CN 200410095131 A CN200410095131 A CN 200410095131A CN 1629590 A CN1629590 A CN 1629590A
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- heat exchanger
- heat
- air
- flow direction
- fin
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
- F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
- F28D1/0417—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with particular circuits for the same heat exchange medium, e.g. with the heat exchange medium flowing through sections having different heat exchange capacities or for heating/cooling the heat exchange medium at different temperatures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
- F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
- F28D1/0435—Combination of units extending one behind the other
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
- F28F1/128—Fins with openings, e.g. louvered fins
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
- F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2215/00—Fins
- F28F2215/04—Assemblies of fins having different features, e.g. with different fin densities
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Abstract
In a heat exchanging apparatus disposing two heat exchangers in a form of two rows of upstream downstream sides in an air flow direction, each heat exchanger comprising a pair of header pipes, a plurality of heat transfer tubes and corrugated-type fins disposed between respective adjacent heat transfer tubes, an inlet for a heat exchange medium is provided on the heat exchanger of the downstream side, an outlet for the heat exchange medium is provided on the heat exchanger of the upstream side, and a pitch of the fins of the upstream-side heat exchanger is set larger than a pitch of the fins of the downstream-side heat exchanger. A resistance against air passage as a whole of the apparatus can be reduced, while maintaining a desirable maximum amount of heat exchange as the total of the two rows.
Description
Technical field
The present invention relates to a kind of heat-exchange device, wherein two heat-exchanger is arranged to two rows' form in the upstream and downstream side of air-flow direction, heat exchange medium is series flow between two heat-exchanger, relate in particular to a kind of heat-exchange device that is applicable to the situation that requires following performance, promptly when the heat exchange property of guaranteeing whole device is good, can reduce air flow resistance, and this device can be installed in the confined space of vehicle air conditioning for example.
Background technology
A kind of so known heat-exchange device is arranged, and (for example Japan Patent 3,371,071), two heat-exchanger is arranged to two forms of arranging in the upstream side and the downstream of air-flow direction, by making heat exchange medium series flow between two heat-exchanger, heat exchange medium mobile is divided into two rows.In the structure that above-mentioned Japan Patent is described, two plate heat exchangers of heat exchange medium shunting are arranged to two forms of arranging in the upstream side and the downstream of air-flow direction, the flow area in the hole of heat exchange medium is identical for the heat exchanger in upstream side and downstream although be used on the heat exchanger tube to circulate, it is bigger than the width of downstream heat exchanger tube that but the width of the heat exchanger tube of upstream side heat exchanger is set ground, the hole count of heat exchange medium of upstream side heat exchanger of being used for circulating is made as even number, and the hole count that the corresponding hole count in the heat exchanger of downstream is made as in the upstream side heat exchanger deducts 2.Note a fact in the said structure, promptly heat exchange medium is split in two heat-exchange devices of arranging at one, heat exchange in the heat exchanger tube of air-flow direction upstream side is more more active than the heat exchange in the heat exchanger tube of downstream, the circulation of heat exchange medium has improved in the upstream side heat exchanger tube, thereby has strengthened the exchange capability of heat of whole heat-exchange device.
On the other hand, disclosed a kind of like this structure among the Japanese documentation JP-A4-73599, in a plane tube type heat exchanger, heat exchanger tube inside is divided into two different flow channels of upstream side and downstream on the direction that air flows, and with above-mentioned patent (Japan Patent 3,371,071) inverted configuration described in be, the circulation area of downstream flow process is bigger than the circulation area of upstream side flow process, by improving the circulation of heat exchange medium in the flow process of downstream, the heat exchange amount in two flow processs has reached balance.
But, as a rule, compare with the heat exchanger that single form flows on air-flow direction with heat exchange medium, be divided on the air-flow direction in two rows' the heat-exchange device being flowing in of heat exchange medium, thickness on the air-flow direction has increased, and flowing pressure loss has also increased.Moreover, at Japan Patent 3,371, in the 071 described structure, owing to the two kinds of different types that are shaped as of heat exchanger tube, the number of model cost, administrative expenses and manufacturing step has all increased, so manufacturing cost has improved.
Recently, the demand of making the littler heat exchanger that is used for car air-conditioner is growing, and also requirement can improve the performance and the efficient of air conditioning simultaneously.For performance and the efficient that improves air conditioning, need most the efficient that improves heat exchanger, but the raising of effectiveness of heat exchanger also is limited.For this reason, the size that can increase heat exchanger is not so easy from the angle of arranging vehicle still to satisfy above-mentioned requirements.So, be exactly the thickness that increases heat exchanger as next the best way.In this case, two kinds of methods are arranged, a kind of is the thickness that only increases heat exchanger, and another kind is two rows' a form that two thin heat exchangers are arranged on air-flow direction, and thinks that a kind of method in back is more effective.But, compare with an independent row's situation, in the situation that only two thin heat exchangers is arranged to two rows, the resistance that air flows has increased twice.For example under the situation as condenser, if air flow resistance has increased, following problem can appear, especially when car speed is smaller (when cooling fan turns round, especially in idle running):
(1) bring heat loss may for the radiator that is arranged on the condenser back.
(2) bring heat loss may for condenser itself.
Summary of the invention
Therefore, be divided at the forms of taking two heat exchangers are being arranged on the air-flow direction two rows, heat exchange medium mobile under two rows' the prerequisite of structures, a kind of like this heat-exchange device preferably can be provided, and it can reduce the air flow resistance of whole device in the total maximum heat exchange amount of the expectation that keeps two bank of heat exchangers.
In order to realize above-mentioned target, heat-exchange device of the present invention is arranged to two heat exchangers along the upstream side of air-flow direction and two forms of arranging in downstream, each heat exchanger comprises the collector of pair of opposing, a plurality of heat exchanger tubes that the end is connected with corresponding collector separately respectively and is provided with predefined interval along the axial direction of described collector, and be arranged between the adjacent separately heat exchanger tube so that the rippled fin that on the direction that heat exchanger tube extends, has predefined spacing, and between two heat exchangers the heat exchange medium of series flow, it is characterized in that, the inlet of described heat exchange medium is located on the described heat exchanger in described air-flow direction downstream, and the outlet of described heat exchange medium is located on the described heat exchanger of described air-flow direction upstream side, and the spacing of the described fin on the described heat exchanger in the described air-flow direction of the gap ratio downstream of the described fin on the described heat exchanger of described air-flow direction upstream side big (first kind of situation of the present invention).That is to say that the spacing of rippled fin of heat exchangers of being arranged to two rows is different, the spacing of fin of upstream side is done more greatly (doing sparsely), and the spacing of fin in downstream is done smallerly (doing intensively).
In this heat-exchange device, the ratio of the spacing of fin of the spacing of fin of the heat exchanger of air-flow direction upstream side and downstream heat exchanger preferably sets in 1.1～1.3 scope.
In addition, another kind of heat-exchange device according to the present invention is arranged to two heat exchangers along the upstream side of air-flow direction and two forms of arranging in downstream, each heat exchanger comprises the collector of pair of opposing, a plurality of heat exchanger tubes that the end is connected with corresponding collector separately respectively and is provided with predefined interval along the axial direction of described collector, be arranged between the adjacent separately heat exchanger tube so that the rippled fin that on the direction that heat exchanger tube extends, has predefined spacing, with be arranged on each described fin so that a plurality of blinds openings that have predefined spacing in the described direction that flows along air, and between two heat exchangers the heat exchange medium of series flow, it is characterized in that, the inlet of described heat exchange medium is located on the heat exchanger in air-flow direction downstream, and the outlet of described heat exchange medium is located on the described heat exchanger of described air-flow direction upstream side, and the gap ratio that is arranged on the described blinds opening on the described fin of described heat exchanger of described air-flow direction upstream side is arranged on the spacing big (second kind of situation of the present invention) of the described blinds opening on the described fin of described heat exchanger in described air-flow direction downstream.That is to say, the blinds aperture pitch of being arranged on the ripple rippled fin on two rows' the fin of heat exchangers is different, the blinds aperture pitch of upstream side is done more greatly (doing sparsely), and the blinds aperture pitch in downstream is done smallerly (doing intensively).
Another heat-exchange device according to the present invention is arranged to two heat exchangers along the upstream side of air-flow direction and two forms of arranging in downstream, each heat exchanger comprises the collector of pair of opposing, a plurality of heat exchanger tubes that the end is connected with corresponding collector separately respectively and is provided with predefined interval along the axial direction of described collector, be arranged between the adjacent separately heat exchanger tube so that the rippled fin that on the direction that heat exchanger tube extends, has predefined spacing, with be arranged on each described fin so that a plurality of blinds openings that have predefined spacing in the described direction that flows along air, and between two heat exchangers the heat exchange medium of series flow, it is characterized in that, the inlet of described heat exchange medium is located on the described heat exchanger in described air-flow direction downstream, and the outlet of described heat exchange medium is located on the described heat exchanger of described air-flow direction upstream side, and it is littler than the elevation angle of the described blinds opening on the described fin of the heat exchanger in described air-flow direction downstream to be arranged on the elevation angle of the described blinds opening on the described fin of described heat exchanger of described air-flow direction upstream side.(the third situation of the present invention).That is to say that the blinds opening elevation angle of being arranged on two rows' the rippled fin of heat exchangers is different, the blinds opening elevation angle of upstream side is done smallerly, and the blinds opening elevation angle in downstream is done more greatly.
Another heat-exchange device according to the present invention is arranged to two heat exchangers along the upstream side of air-flow direction and two forms of arranging in downstream, each heat exchanger comprises the collector of pair of opposing, a plurality of heat exchanger tubes that the end is connected with corresponding collector separately respectively and is provided with predefined interval along the axial direction of described collector, be arranged between the adjacent separately heat exchanger tube so that the rippled fin that on the direction that heat exchanger tube extends, has predefined spacing, with be arranged on each described fin so that a plurality of blinds openings that have predefined spacing in the described direction that flows along air, and between two heat exchangers the heat exchange medium of series flow, it is characterized in that, the inlet of described heat exchange medium is located on the described heat exchanger in described air-flow direction downstream, and the outlet of described heat exchange medium is located on the described heat exchanger of described air-flow direction upstream side, and is provided with at least two kinds of structures in following (A)～(C) three kinds of structures:
(A) the big structure of spacing of the described fin on the described heat exchanger in the described air-flow direction of the gap ratio downstream of the described fin on the described heat exchanger of described air-flow direction upstream side;
(B) gap ratio that is arranged on the described blinds opening on the described fin of described heat exchanger of described air-flow direction upstream side is arranged on the big structure of spacing of the described blinds opening on the described fin of described heat exchanger in described air-flow direction downstream;
(C) be arranged on the elevation angle little structure of the elevation angle of the described blinds opening on the described fin of described heat exchanger of described air-flow direction upstream side than the described blinds opening on the described fin of the heat exchanger in described air-flow direction downstream.
In heat-exchange device according to the present invention, be located at by inlet on the heat exchanger in air-flow direction downstream heat exchange medium, outlet is located on the heat exchanger of air-flow direction upstream side, and allow heat exchange medium series flow between two heat-exchanger, make the whole heat exchange amount of two bank of heat exchangers may reach gratifying value.So, in first kind of situation of the present invention, by doing the spacing of fin of air-flow direction upstream side sparse and doing the spacing of fin in downstream intensive, make when the whole heat exchange amount that keeps two bank of heat exchangers reaches desired value, reduce the moving resistance of whole device hollow air-flow (pressure loss when air flows) and become possibility.Especially when car speed is low, as described in following performance comparison, when keeping its heat exchange property suitable, reduce the mobile resistance of air and become possibility with the heat exchange property when the ratio of air-flow direction upstream side, downstream spacing of fin is 1: 1.
In addition, in second kind of situation of the present invention, the blinds aperture pitch downstream is intensive by the blinds aperture pitch that makes the air-flow direction upstream side is sparse, make that the air flow resistance that reduces in the whole device becomes possibility when the heat exchange amount that keeps two bank of heat exchangers integral body reaches gratifying value.In addition, in the third situation of the present invention, the blinds opening elevation angle in and downstream smaller by the blinds opening elevation angle that makes the air-flow direction upstream side is big, make that the air flow resistance that reduces in the whole device becomes possibility when the heat exchange amount that keeps two bank of heat exchangers integral body reaches gratifying value.And, if any situation in first, second and the third situation of the present invention is restricted in design, above-mentioned three kinds of situations are made up in twos or the three makes up and just becomes possibility.Even in such combination situations, also may when reaching gratifying value, the heat exchange amount that keeps two bank of heat exchangers integral body reduce the air flow resistance in the whole device.
Therefore, in heat-exchange device according to the present invention, by two heat exchangers being arranged to the forms of two rows on air-flow direction, can be implemented in the target that reduces the air flow resistance in the whole device when heat exchange amount that keeps two bank of heat exchangers integral body reaches gratifying value.Particularly be used under the situation of vehicle air conditioning, when car speed is low, may more effectively show this premium properties in the present invention.Especially when the present invention as the condenser time, may solve the aforesaid problem that radiator and condenser itself is caused heat loss.
In conjunction with the preferred embodiments of the present invention purpose of the present invention, characteristics and advantage are further set forth below with reference to accompanying drawings.
Description of drawings
Referring now to accompanying drawing specific embodiments of the invention are described, but described embodiment provides as just example, and the present invention is not provided constraints.
Fig. 1 is the perspective view according to the heat-exchange device of first embodiment of the invention.
Fig. 2 is the flow schematic diagram of the heat exchange medium in the reflection heat-exchange device shown in Figure 1.
Fig. 3 is the curve map that the spacing of fin of reflection heat-exchange device middle and upper reaches side heat exchanger shown in Figure 1 concerns between face velocity Vc and the air flow resistance Pa when changing with the spacing of fin of downstream heat exchanger.
Fig. 4 is the curve map that the spacing of fin of reflection heat-exchange device middle and upper reaches side heat exchanger shown in Figure 1 concerns between face velocity Vc and the heat exchange property Qc when changing with the spacing of fin of downstream heat exchanger.
Fig. 5 is the curve map that the spacing of fin of reflection heat-exchange device middle and upper reaches side heat exchanger shown in Figure 1 concerns between air flow resistance Pa and the heat exchange property Qc when changing with the spacing of fin of downstream heat exchanger.
Fig. 6 is the side view that is provided with the heat-exchange device of blinds opening on upstream side and the downstream heat-exchanger fin that is reflected in according to second embodiment of the invention.
Fig. 7 is the local amplification sectional view according to the heat-exchange device of third embodiment of the invention.
The specific embodiment
The heat-exchange device 1 that illustrated in figures 1 and 2 is according to first embodiment of the invention.First embodiment is corresponding with the first kind of situation of the present invention described in the preamble.Heat-exchange device 1 comprises that two are flowed the heat exchanger that the upstream side of 2 flow directions and downstream are arranged to two rows, i.e. upstream side heat exchanger 3 and downstream heat exchangers 4 at air.Heat exchanger 3,4 comprises collector 5a, 6a and 5b, the 6b of pair of opposing respectively, several two ends are connected with 5b, 6b with corresponding collector 5a, 6a separately respectively, along collector 5a, 6a and 5b, 6b axial direction with heat exchanger tube 7a, 7b that predefined interval is provided with, be arranged between adjacent separately heat exchanger tube 7a, the 7b, so that on the direction that contiguous heat exchanger tube 7a, 7b extend, form rippled fin 8a, the 8b of a predefined spacing.On the heat exchanger 3,4 that is arranged to two rows, the inlet 9 of heat exchange medium is located on the collector 6b of air-flow direction downstream heat exchanger 4, is located on the collector 6a of air-flow direction upstream side heat exchanger 3 and export 10.The heat exchange medium that flows through heat exchanger 4 inside flows to the collector 5a of upstream side heat exchanger 3 from collector 5b by tube connector 11, and flows to continuously the heat exchanger 3 from heat exchanger 4.
In this heat-exchange device 1 in this embodiment, the spacing of the fin 8b of the gap ratio air-flow direction downstream heat exchanger 4 of the fin 8a of air-flow direction upstream side heat exchanger 3 is big.That is to say that the spacing of the fin 8a of upstream side is done more sparsely relatively, and the spacing of the fin 8b in downstream is done more intensively relatively.
In above-mentioned heat-exchange device 1, two heat exchangers 3,4 are arranged to two forms of arranging in the upstream side and the downstream of air-flow direction, heat exchange medium flows to the heat exchanger 3 from heat exchanger 4 continuously, can guarantee that the heat exchange amount of whole device reaches gratifying value.In addition, in the gratifying while of heat exchange amount of guaranteeing whole device, the air flow resistance of whole device also can reduce.
The situation of (1: 1) compares when identical with the spacing of fin of upstream side (front row) and downstream (back row's) spacing of fin, and the heat exchange performance of heat-exchange device 1 will make an explanation according to Fig. 3 to Fig. 5.Fig. 3 is the curve map of reflection air flow resistance, the ratio that has disclosed the spacing of fin front-seat, that arrange the back was respectively the relation between the air flow resistance Pa in face velocity Vc (promptly entering the air velocity of heat exchanger 3) and the heat-exchange device 1 at 1: 1,1.15: 1 and 1.25: 1 o'clock.
In addition, Fig. 4 and Fig. 5 are the curve maps of reflect heat switching performance.That Fig. 4 has disclosed is front-seat, the ratio of back row's spacing of fin was respectively 1: 1,1.15: 1 and 1.25: 1 o'clock face velocity Vc and heat exchange property Qc between relation, the ratio that Fig. 5 has disclosed the spacing of fin front-seat, that arrange the back was respectively the relation between air flow resistance Pa and the heat exchange property Qc at 1: 1,1.15: 1 and 1.25: 1 o'clock.
From Fig. 3 obviously as can be seen, with the spacing of fin ratio is that 1: 1 o'clock situation is compared, and the air flow resistance Pa (being in the whole vehicle speed range) in the scope of whole face velocity that the spacing of fin ratio is respectively 1.15: 1 and at 1.25: 1 o'clock has reduced.Again, from Fig. 4 obviously as can be seen, with the spacing of fin ratio is that 1: 1 o'clock situation is compared, when the spacing of fin ratio is respectively 1.15: 1 and 1.25: 1, although when face velocity Vc becomes big, the ratio of heat exchange property Qc and face velocity Vc is smaller slightly, but when face velocity Vc diminishes (when for example dallying), has showed the heat exchange property Qc of level much at one.In addition, from Fig. 5 obviously as can be seen, with the spacing of fin ratio is that 1: 1 o'clock situation is compared, and when the spacing of fin ratio was respectively 1.15: 1 and 1.25: 1, the ratio of heat exchange property Qc and air flow resistance had increased in whole air flow resistance scope.
That is to say, in heat-exchange device 1,, can reduce the air flow resistance of whole heat-exchange device 1 in the gratifying while of heat exchange amount that keeps two bank of heat exchangers, 3,4 integral body according to first embodiment.In addition, when heat-exchange device 1 is used for vehicle air conditioning, in the time of low-speed running or idle running etc., can show better performance.Especially when the present invention as the condenser time, can solve described in the preamble to radiator or condenser itself is caused the problem of heat loss.
Shown in Figure 6 is according to a second embodiment of the present invention heat-exchange device 12, and second embodiment is corresponding with aforesaid second kind of situation of the present invention.Heat-exchange device 12 comprises and is arranged on the heat exchanger 14 that air flows the heat exchanger 13 of 2 flow direction upstream sides and is arranged on the downstream.Heat exchanger 13,14 comprises several along heat exchanger tube 15a, the 15b of collector (not shown) axial direction with the setting of predefined interval respectively, is arranged on rippled fin 16a, 16b between adjacent separately heat exchanger tube 15a, the 15b.For example the structure of the entrance and exit of heat exchange medium is identical with the structure shown in Fig. 1,2 basically for other.
On every fin 16a, 16b, be provided with a plurality of blinds opening 17a, 17b with predefined spacing along air-flow direction 2.In addition, in the present embodiment, the spacing of the blinds opening 17b on the gap ratio downstream heat exchanger 14 of the blinds opening 17a on the heat exchanger 13 of air-flow direction upstream side is big.That is to say that the spacing of the blinds opening 17a of upstream side is more sparse relatively, and the spacing of the blinds opening 17b in downstream is more intensive relatively.
In a second embodiment, two heat exchangers 13,14 are flowed the upstream side of 2 flow directions and the form that the downstream is arranged to two rows at air, heat exchange medium flows to from heat exchanger 14 in the heat exchanger 13 continuously, can guarantee that the heat exchange amount of whole device 12 reaches gratifying value.In addition, in the present embodiment, the spacing of the blinds opening 17b in downstream is more intensive because the spacing of the blinds opening 17a of upstream side is more sparse, and the loss of air pressur that installs 12 porch has reduced, and therefore the air flow resistance of whole device 12 also can reduce.In addition, when heat-exchange device 12 is used for vehicle air conditioning, in the time of low-speed running or idle running etc., can show better performance.Especially when the present invention is used for condenser, can solve aforesaid to radiator or condenser itself is caused the problem of heat loss.
Fig. 7 shows according to the air of third embodiment of the invention and flows the fin 18a in 2 flow direction upstream sides and downstream, the sectional view of 18b.The 3rd embodiment is corresponding with aforesaid the third situation of the present invention.Blinds opening 19a, 19b are separately positioned on fin 18a, the 18b.Other structures are identical with the structure shown in Fig. 1,2 basically.
In the 3rd embodiment, though the number of the blinds opening 19b in the blinds opening 19a of upstream side and downstream is identical, the elevation angle of two blinds openings is different.That is, as shown in Figure 7, being arranged on angle of elevation alpha that air flows the blinds opening 19a on the 2 flow direction upstream side fin 18a littler than the elevation angle β that is arranged on air and flows the blinds opening 19b on the 2 flow direction downstream fin 18b (is α＜β).
In the 3rd embodiment, by two heat exchangers are flowed the upstream side of 2 flow directions and the form that the downstream is arranged to two rows at air, heat exchange medium flows to the upstream side heat exchanger from the downstream heat exchanger continuously, can guarantee that the heat exchange amount of whole heat-exchanger rig reaches gratifying value.In addition, in this embodiment, because the elevation angle of the blinds opening 19a of upstream side is littler than the elevation angle of the blinds opening 19b in downstream, the air flow resistance of whole device also can reduce.
In first to the 3rd above-mentioned embodiment, although purpose of the present invention, promptly at the gratifying air flow resistance that reduces whole device simultaneously of heat exchange amount that keeps two bank of heat exchangers integral body, even just can reach by an independent embodiment, but in the combination after suitably combination or three make up in twos with the foregoing description, can more effectively reach purpose of the present invention.In addition, though when any one embodiment owing to can not implement the time such as the reason of restriction in the design, by suitably with other embodiment combinations, one reaches purpose of the present invention surely.
The present invention can be used for heat exchanger is arranged to two rows' forms, the heat-exchange device of heat exchange medium series flow at air-flow direction, also is especially suitable for use as the heat-exchange device in the refrigeration system of vehicle air conditioning.
Claims (4)
1. heat-exchange device, two heat exchangers are arranged to along the upstream side of air-flow direction and two forms of arranging in downstream, each heat exchanger comprises the collector of pair of opposing, a plurality of heat exchanger tubes that the end is connected with corresponding collector separately respectively and is provided with predefined interval along the axial direction of described collector, and be arranged between the adjacent separately heat exchanger tube so that the rippled fin that on the direction that heat exchanger tube extends, has predefined spacing, and between two heat exchangers the heat exchange medium of series flow, it is characterized in that, the inlet of described heat exchange medium is located on the described heat exchanger in described air-flow direction downstream, and the outlet of described heat exchange medium is located on the described heat exchanger of described air-flow direction upstream side, and the spacing of the described fin on the described heat exchanger in the described air-flow direction of the gap ratio downstream of the described fin on the described heat exchanger of described air-flow direction upstream side is big.
2. heat-exchange device, two heat exchangers are arranged to along the upstream side of air-flow direction and two forms of arranging in downstream, each heat exchanger comprises the collector of pair of opposing, a plurality of heat exchanger tubes that the end is connected with corresponding collector separately respectively and is provided with predefined interval along the axial direction of described collector, be arranged between the adjacent separately heat exchanger tube so that the rippled fin that on the direction that heat exchanger tube extends, has predefined spacing, with be arranged on each described fin so that a plurality of blinds openings that have predefined spacing in the described direction that flows along air, and between two heat exchangers the heat exchange medium of series flow, it is characterized in that, the inlet of described heat exchange medium is located on the heat exchanger in air-flow direction downstream, and the outlet of described heat exchange medium is located on the described heat exchanger of described air-flow direction upstream side, and the gap ratio that is arranged on the described blinds opening on the described fin of described heat exchanger of described air-flow direction upstream side to be arranged on the spacing of the described blinds opening on the described fin of described heat exchanger in described air-flow direction downstream big.
3. heat-exchange device, two heat exchangers are arranged to along the upstream side of air-flow direction and two forms of arranging in downstream, each heat exchanger comprises the collector of pair of opposing, a plurality of heat exchanger tubes that the end is connected with corresponding collector separately respectively and is provided with predefined interval along the axial direction of described collector, be arranged between the adjacent separately heat exchanger tube so that the rippled fin that on the direction that heat exchanger tube extends, has predefined spacing, with be arranged on each described fin so that a plurality of blinds openings that have predefined spacing in the described direction that flows along air, and between two heat exchangers the heat exchange medium of series flow, it is characterized in that, the inlet of described heat exchange medium is located on the described heat exchanger in described air-flow direction downstream, and the outlet of described heat exchange medium is located on the described heat exchanger of described air-flow direction upstream side, and it is littler than the elevation angle of the described blinds opening on the described fin of the heat exchanger in described air-flow direction downstream to be arranged on the elevation angle of the described blinds opening on the described fin of described heat exchanger of described air-flow direction upstream side.
4. heat-exchange device, two heat exchangers are arranged to along the upstream side of air-flow direction and two forms of arranging in downstream, each heat exchanger comprises the collector of pair of opposing, a plurality of heat exchanger tubes that the end is connected with corresponding collector separately respectively and is provided with predefined interval along the axial direction of described collector, be arranged between the adjacent separately heat exchanger tube so that the rippled fin that on the direction that heat exchanger tube extends, has predefined spacing, with be arranged on each described fin so that a plurality of blinds openings that have predefined spacing in the described direction that flows along air, and between two heat exchangers the heat exchange medium of series flow, it is characterized in that, the inlet of described heat exchange medium is located on the described heat exchanger in described air-flow direction downstream, and the outlet of described heat exchange medium is located on the described heat exchanger of described air-flow direction upstream side, and is provided with at least two kinds of structures in following (A)～(C) three kinds of structures:
(A) the big structure of spacing of the described fin on the described heat exchanger in the described air-flow direction of the gap ratio downstream of the described fin on the described heat exchanger of described air-flow direction upstream side;
(B) gap ratio that is arranged on the described blinds opening on the described fin of described heat exchanger of described air-flow direction upstream side is arranged on the big structure of spacing of the described blinds opening on the described fin of described heat exchanger in described air-flow direction downstream;
(C) be arranged on the elevation angle little structure of the elevation angle of the described blinds opening on the described fin of described heat exchanger of described air-flow direction upstream side than the described blinds opening on the described fin of the heat exchanger in described air-flow direction downstream.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003337294A JP2005106328A (en) | 2003-09-29 | 2003-09-29 | Heat exchanging device |
| JP337294/2003 | 2003-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1629590A true CN1629590A (en) | 2005-06-22 |
Family
ID=34191564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410095131 Pending CN1629590A (en) | 2003-09-29 | 2004-09-29 | Heat exchanging apparatus |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1519133A3 (en) |
| JP (1) | JP2005106328A (en) |
| CN (1) | CN1629590A (en) |
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| US5529116A (en) * | 1989-08-23 | 1996-06-25 | Showa Aluminum Corporation | Duplex heat exchanger |
| JP2984326B2 (en) | 1990-07-13 | 1999-11-29 | サンデン株式会社 | Heat exchanger |
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| JPH06221787A (en) * | 1993-01-29 | 1994-08-12 | Nippondenso Co Ltd | Heat exchanger |
| JPH09159311A (en) * | 1995-12-08 | 1997-06-20 | Toshiba Corp | Heat exchanger for refrigerator |
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| US6209628B1 (en) * | 1997-03-17 | 2001-04-03 | Denso Corporation | Heat exchanger having several heat exchanging portions |
| JP4690605B2 (en) * | 2001-09-06 | 2011-06-01 | 株式会社ティラド | Corrugated fin heat exchanger |
| JP2004125346A (en) * | 2002-10-07 | 2004-04-22 | Denso Corp | Heat exchanger |
| JP4037241B2 (en) * | 2002-10-24 | 2008-01-23 | カルソニックカンセイ株式会社 | Corrugated fin |
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- 2004-09-16 EP EP04255603A patent/EP1519133A3/en not_active Withdrawn
- 2004-09-29 CN CN 200410095131 patent/CN1629590A/en active Pending
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| CN101871708B (en) * | 2010-07-08 | 2012-03-28 | 三花丹佛斯（杭州）微通道换热器有限公司 | Heat exchanging device and refrigerating system |
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| CN103423921A (en) * | 2012-05-18 | 2013-12-04 | 摩丁制造公司 | Heat exchanger, and method for transferring heat |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP1519133A3 (en) | 2006-03-08 |
| EP1519133A2 (en) | 2005-03-30 |
| JP2005106328A (en) | 2005-04-21 |
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