CN204063696U - A kind of air conditioning condenser for vehicle - Google Patents
A kind of air conditioning condenser for vehicle Download PDFInfo
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- CN204063696U CN204063696U CN201420531141.1U CN201420531141U CN204063696U CN 204063696 U CN204063696 U CN 204063696U CN 201420531141 U CN201420531141 U CN 201420531141U CN 204063696 U CN204063696 U CN 204063696U
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Abstract
The utility model relates to a kind of air conditioning condenser for vehicle, comprises the header of both sides, is arranged on refrigerant general import on header and general export, is arranged in parallel in flat pipe group between two-side current collecting pipe; One group of flat tube is a flow process, by exchange capability of heat by being respectively first pass, the second flow process to weak by force ... n-th flow process, n is odd number or even number, their sequential series; It is characterized in that, the stronger flow scheme design of described exchange capability of heat is installed rear surface at condenser and is accepted the larger region of air quantity, and the poor flow process of described condensing capacity then designs installs the not smooth region of rear surface air flowing at condenser.Condenser described in the utility model has self-adaptation in actual vehicle engine nacelle air flow feature, by changing the medium side loop design of parallel flow condenser, the part making exchange capability of heat stronger accepts stronger air mass flow and distributes, and obtain higher condensing heat-exchange amount on the whole, to improve air-conditioning system ability.
Description
Technical field
The utility model belongs to automobile component, be specifically related to a kind of can self adaptation periphery flow field and improve the air conditioning condenser for vehicle of thermal performance.
Background technology
Air conditioning for automobiles is the second largest source of automobile fuel consumption, and typical fuel consumption values is 30 to 40% of car load.Condenser actual performance has directly and the impact of key the refrigerating capacity of air-conditioning system and coefficient of performance, therefore also has remarkable impact to the oil consumption of vehicle complete vehicle and disposal of pollutants.
Air conditioning system for vehicle forms primarily of four parts: evaporimeter, compressor, expansion valve, condenser, and the air-conditioning duct playing connection function.Wherein evaporimeter, expansion valve are integrated on air-conditioning box (HVAC MODULE), and be generally positioned at car, compressor is on engine, and condenser is generally placed in vehicle front, but is not limited to front end.
In recent years, air conditioning condenser for vehicle substantially with concurrent flow type for main flow, condenser medium side flow process (flow process is also called loop) can have different designs, but it is almost stereotyped on the runner design of current industrial circle, namely distribute to more runner (with the flat tube of micropore cross section) from top first pass, order gives less runner downwards.As for the design of four comparatively common flow processs, see Fig. 1, total flat tube number is the condenser of 28, and first pass is set to 10 tube bundles, and the second flow process is 8, and the 3rd flow process is 6, and the 4th is 4.Refrigerant, as R134A, flows in flat tube internal channel, and the design of different flow process determines refrigerant velocity flow pattern in each flow process in Tube Sheet of Heat Exchanger, has influence on the coefficient of heat transfer and the flow resistance of medium side, thus causes the difference of total heat transfer effect.
Modern Automobile Engine power is higher, and electrical equipment gets more and more, and makes enging cabin crowded all the more.Condenser is arranged in so crowded environment, and ambient air backflow, systematic back pressure cause increasing negative effect to its actual performance.Therefore novel, rational condenser thermal structure design has important technological progress meaning.
In the world today, no matter be parts suppliers or car load factory, the measurement of condenser thermal performance mainly concentrates on rig test result, and bench test is flow through based on condenser surface by even wind speed, such as face velocity 2M/S, 3.0M/S and the 4.5M/S as professional standard wind speed.The actual air flow field very different of this and enging cabin inside, therefore only has relatively meaning.Often occur that rig test result improves up to 10%, and entrucking actual measurement gained actual augmentation is perhaps less than the difficult situation of 1% level.
For common parallel flow condenser, usually for even number flow scheme design, as four flow processs, refrigerant inlet and outlet, through the same side of condenser of being everlasting, as the import 1 in Fig. 1, export shown in 2.Then may import and export at not homonymy for odd number flow scheme design.
General and the radiator of condenser, electronic fan is integrated is positioned over motor head, the rear end of vehicle front bumper.When entire vehicle design, owing to considering wind resistance coefficient of whole vehicle, the front end incoming air area of vehicle is general less, and can arrange a lot of striated grid.Especially bumper is in the positive middle part of incoming air, is also in the middle part of condenser air intake, and it is quite uneven that relative geometric position makes condenser air intake superficial air distribute, and thus makes actual condensation heat exhaust also uneven (see Fig. 3).For discussed typical four flow process condensers, blow over inlet surface with even wind speed, the big portion of first pass is two-phase heat transfer zone, and therefore exchange capability of heat is comparatively strong, and the theoretical coefficient of heat transfer of medium side is 4200 to 5000w/k.m
2between; Second flow process is in two-phase heat transfer zone substantially, also belongs to the stronger region of exchange capability of heat, and the theoretical coefficient of heat transfer of medium side is 3200 to 4200w/k.m
2between, and three and four flow process heat exchange are poor, especially the 4th flow process, owing to being in condensation super cooled sect, basic flow pattern is single-phase liquid, and its coefficient of heat transfer is only at about 2000 (see Fig. 2).
And then consider the actual flow process distribution of real vehicle, position due to front bumper is in the stage casing of condenser substantially, shelter from air intake direction, add additional friction, make the second flow process almost all, the subregion of first pass and the subregion actual air volume in the 3rd district greatly reduce (see Fig. 3).This phenomenon can cause effective heat exchange amount of condenser to reduce, particularly remarkable during idling.Now, condenser air intake relies on the air draught of electronic fan completely, and air quantity is less, and condenser capacity greatly reduces, and finally has influence on general effect and the energy consumption of air-conditioning system.
Summary of the invention
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of air-conditioning condenser that can be adapted to actual vehicle condenser air flow field, in the hope of effectively increasing condenser heat exchange amount on real vehicle; Specifically adopt and optimize medium side flow scheme design, improve parts to the adaptive ability in periphery flow field, the region making exchange capability of heat stronger is in the larger condenser surface of air quantity, and loop poor for condensing capacity is placed in the not smooth space of air flowing, promotes the actual heat exchange property of condenser.
The technical solution of the utility model is as follows:
The utility model proposes a kind of air conditioning condenser for vehicle of self adaptation periphery flow field, described condenser comprise both sides header, be arranged on refrigerant general import on header and general export, be arranged in parallel in flat pipe group between two-side current collecting pipe; One group of flat tube is a flow process, by exchange capability of heat by being respectively first pass, the second flow process to weak by force ... n-th flow process, n is odd number or even number, their sequential series; And the stronger flow scheme design of exchange capability of heat is installed rear surface at condenser and accepted the larger region of air quantity, the poor flow process of described condensing capacity then designs installs the not smooth region of rear surface air flowing at condenser.
Particularly, the thick stick that is insured is sheltered to four flow process condensers of middle part, first pass and the second flow process design the position, upper and lower at condenser respectively, and the third and fourth flow scheme design is in the centre position of condenser.
The thick stick that is insured is sheltered to five flow process condensers of middle part, first pass and the second flow process design the position, upper and lower at condenser respectively, 4th and the 5th flow scheme design in the centre position of condenser, the position of the 3rd flow scheme design between the top and middle part of condenser.
The thick stick that is insured is sheltered to six flow process condensers of middle part, first pass and the second flow process design the position, upper and lower at condenser respectively, 5th and the 6th flow scheme design in the centre position of condenser, the position of the third and fourth flow scheme design between the top and middle part of condenser and between bottom and middle part.
Condenser described in the utility model has self-adaptation in actual vehicle engine nacelle air flow feature: by changing the medium side loop design of parallel flow condenser, the part making exchange capability of heat stronger accepts stronger air mass flow and distributes, and obtain higher condensing heat-exchange amount on the whole, to improve air-conditioning system ability.
Below the experimental study of the design proposed:
Inventor uses professional design of heat exchanger software to carry out analog simulation to condenser, and with same condenser for target, identical boundary condition, face velocity 3.5M/S must have design and the utility model design condenser performance distribution curve, as shown in Figure 6.
The upper figure of Fig. 6 is the utility model design; Figure below of Fig. 6 is existing design.In figure, X-coordinate is that condenser tube ranking is from top to bottom put, and Y-coordinate is the exchange capability of heat of single pipe.
Figure below in Fig. 6, between the flat tube of position 13 to 28, A, B, C line is the heat exchange amount of this condenser when free wind speed, and under actual loading condition, due to the obstruction of bumper bar, its ability is only shown in EF line.Therefore, region A4 illustrates capacity loss rate.
Similarly, the upper figure of Fig. 6 illustrates the contrast situation of the utility model design.The condensation number loss that the figure bend shade area of coverage A1 and A2 is effect because front bumper blocks and produces in the utility model design; A4 is the condensation number loss of existing design.Under contrast, the loss of obvious the utility model design has remarkable reduction.
In figure, cross spider shade area of coverage A3 is the exchange capability of heat in condenser; A5 is intrinsic condensing capacity.Under contrast, obviously new design is larger in the heat exchange amount in this region.
Further, the wind speed profile with reference to CAE shows, and the prompting of real shooting photo, and in actual vehicle, the air flowing of condenser is about 1/3,1/3,1/3, i.e. vertical upper, middle part, and the geometry front face area of vertical lower is approximately divided equally.Like this, pipe group 13-26 is then in low heat transfer zone in the weak district of 1 – 1.5M/S due to actual wind speed.
In addition, the condenser model machine made according to the utility model design is through actual entrucking, and in environmental capsule, implement the spectrum oil consumption of NEDC road worsen test, result of the test indicates Novel condenser and improve efficiently comprehensive oil consumption deterioration rate and reach 9.55%.Result is as shown in table 1.
Form 1NEDC road spectrum oil consumption deterioration result of the test indicates Novel condenser (by the design of the utility model design) and improves oil consumption deterioration rate 9.55%
Note amplification=(oil consumption of turning on the aircondition-pass air-conditioning oil consumption)/pass air-conditioning oil consumption
To sum up, the condenser that the utility model proposes environmentally can realize the enhancing of significant total heat exchange amount at real vehicle, it strengthens scope 5% to 15%+.Specifically, same geometry, through the condenser redesigned, corresponding to existing design, under the condition of wind speed 3.5M/S, meaning will have the raising of 1000 to 1500 watts in the refrigerating capacity of the air-conditioning system of middle-size and small-size vehicle under standard test condition.Test run oil consumption experiment finds that there is significant system power dissipation and declines, and consumption improvement rate reaches 9.55%.Meanwhile, the design is in production with manufacture and substantially do not increase cost, without the need to newly added equipment, easy to implement.
Accompanying drawing explanation
Fig. 1 is that the condenser structure figure of former scheme and flow of refrigerant are illustrated.
Fig. 2 is the exchange capability of heat distribution signal of former scheme condenser air side.
Fig. 3 is the air flowing variation signal by bumper bar affects on real vehicle of former scheme condenser.
Fig. 4 is that new departure band drier condenser structure figure and flow of refrigerant are illustrated.
Fig. 5 is that be not with drier condenser structure figure and the flow of refrigerant of new departure is illustrated.
Fig. 6 uses professional design of heat exchanger software to carry out the Comparative result figure of analog simulation to the utility model design and the condenser of existing design.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model being described further, it should be noted that example described herein is only for illustrating, is not limited to the utility model:
The utility model and condenser position on real vehicle, vehicle front bumper moulding are relevant, and the design of condenser circuit should do heating power adaptability design according to periphery situation.As an exemplary embodiments, be applicable to the vehicle that condenser stage casing is blocked by front bumper.Also other situations are applicable to, as condenser front has any obstruction or rear to have unsuitable system air back-pressure.
As shown in Figure 1, in figure, arrow represents refrigerant flow direction to current typical four flow process condensers, and the second to four flow processs are not shown as the flat tube 6 in first pass, and this design is with drying bottle, but the layout not with drying bottle does not affect Patent design as herein described.Condenser in figure comprises the left side header 4-1 and right side header 4-2 that are arranged in parallel, header is provided with refrigerant general import 1 and general export 2, be arranged in parallel between two-side current collecting pipe flat pipe group, one group of flat tube (some pipes) is a flow process, by exchange capability of heat by being respectively first pass, the second flow process, the 3rd flow process and the 4th flow process to weak by force, connected by the through hole be arranged on the dividing plate in header between flow process.
Particularly, cold-producing medium enters left side header 4-1 by refrigerant main entrance 1, first pass and the second flow process intercept by dividing plate 3-1 in the header 4-1 of left side, led some flat tubes 6 of first pass, enter right side header 4-2, second flow process and the 3rd flow process intercept by dividing plate 3-3 in the header 4-1 of left side, fluid is imported the second flow process, then left side header 4-1 is reached, and be subject to the obstruct of the dividing plate 3-2 between the 3rd flow process and the 4th flow process, enter the 3rd flow process, then drying bottle 5 is entered by the passage 7-1 between right side header 4-2 and drying bottle 5, again through passage 7-2, after the 4th flow process, condenser is flowed out through general export 2.
See Fig. 2, when blowing over inlet surface with even wind speed, first pass exchange capability of heat comparatively strong (having maximum flat tubes), the theoretical coefficient of heat transfer of medium side is 4200 to 5000W/KM
2between; Second flow process also belongs to the stronger region of exchange capability of heat (having more flat tube), and the theoretical coefficient of heat transfer of medium side is 3200 to 4200W/KM
2between, and three and four flow process heat exchange poor (flat tube number is less), especially the 4th flow process, the coefficient of heat transfer is only about 2000.
See Fig. 3, and in common car load layout, bumper is in the middle part of condenser substantially, makes incoming air be hindered (in figure shown in dotted arrow) and can not provide effective air to the loop that heat exchange is stronger, and then can not effectively utilize condenser heat exchange area.
Therefore, the utility model increases heat exchange efficiency for making full use of the flowing of effective air, refrigerant loop is adjusted, as shown in Figure 4, first pass stronger for exchange capability of heat and the second flow process (namely giving the flow process of more flat tube) are designed the upper and lower at condenser respectively, these two parts do not block by bumper, are that condenser installation rear surface accepts the larger region of air quantity.And by the middle part of the third and fourth poor for condensing capacity flow scheme design, these two parts block due to bumper, be, at condenser, air flowing not smooth region in rear surface is installed.Need mutually together with flow process between be communicated with by communicating pipe, or to be communicated with by the through hole on dividing plate.
Particularly, on the basis of the existing design of Fig. 1, the second flow process is adjusted to condenser.Refrigerant enters first pass from left side header 4-1, and from first pass refrigerant out through communicating pipe 9, enter the second flow process being positioned at condenser, this is the stronger region of heat exchange.From the second flow process out, then the import through one period of communicating pipe 8 with the 3rd flow process at middle part is connected fluid, and fluid enters the 3rd flow process, and then enters the 4th flow process, finally flows out condenser through general export 2.And the third and fourth flow process belongs to exchange capability of heat comparatively weak-strong test, be endowed less air and distribute.So, under the unmodifiable condition of total heat exchange area, achieve comparatively keen draft and cross strong heat exchange surface, and weak tendency air flows through weak heat exchange surface, obtains the lifting of total heat exchange amount with this.For realizing the flow process of imagination, in the header 4-1 of left side, between first pass and the 3rd flow process, dividing plate 3-1 is set, between 3rd flow process and the 4th flow process, 3-2 is set, between the 4th flow process and the second flow process, dividing plate 3-5 is set, in the header of right side, between first pass and the 3rd flow process, dividing plate 3-3 is set, between 3rd flow process and the 4th flow process, dividing plate 3-6 is set, between the 4th flow process and the second flow process, dividing plate 3-4 is set, blocking effect.3rd flow process realizes being communicated with by drying bottle 5 with the 4th flow process.Due to the change of workflow position, the position of drying bottle 5 and size need the place's of doing adjustment, as shown in Figure 4.
Figure 5 shows that another embodiment of the present utility model, the condenser designed mainly for not establishing drying bottle.In this figure, eliminate between the 3rd flow process and the 4th flow process and arrange dividing plate 3-6, be that two flow processs can be directly communicated with by right side header 4-2, whole condensation process principle is analogous to Fig. 4, is not repeated herein.
For the condenser with five flow processs, its structure partial principle and four flow processs similar, first pass and the second flow process are designed the position, upper and lower at condenser respectively, 4th and the 5th flow scheme design is in the centre position of condenser, and the 3rd flow process then can design the position between the top and middle part of condenser.
For six flow process condensers, similarly, first pass and the second flow process design the position, upper and lower at condenser respectively, the 5th and the 6th flow scheme design in the centre position of condenser, the position of the third and fourth flow scheme design between the top and middle part of condenser and between bottom and middle part.
For the condenser with odd number flow process, as the flow processs such as 3,5,7, refrigerant general import and general export are generally arranged on the header of phase the same side.
And for having the condenser of even number flow process, as the flow processs such as 4,6,8, refrigerant general import and general export are arranged on phase the same side or not on homonymy header.
The set-up mode of the total import and export of the refrigerant for condenser can be multiple choices, as adopted being horizontally disposed with of Figure 4 and 5, and according to the needs of locus, also can adopt vertical or non-horizontal arrangement mode.
In addition, the flat tube orientation of the condenser shown in figure is all levels, but is not limited to this spread pattern as required, also can be vertical, or other form.
In above structure, communicating pipe 8 and 9 can be different connection form, and its position also can be located at header inside.
The refrigerant that this condenser adopts can be R134A, but is not limited thereto, and can also comprise, R1234YF, CO2, R22 and R410A etc., and the condensation process of all types of volatility refrigerant.
Above content is the further detailed description done the utility model in conjunction with concrete embodiment, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of ordinary skill in the field, without departing from the concept of the premise utility, multiple amendment, replacement can also be made, all should be considered as belonging to protection domain of the present utility model.
Claims (8)
1. an air conditioning condenser for vehicle, described condenser comprise both sides header, be arranged on refrigerant general import on header and general export, be arranged in parallel in flat pipe group between two-side current collecting pipe; One group of flat tube is a flow process, by exchange capability of heat by being respectively first pass, the second flow process to weak by force ... n-th flow process, n is odd number or even number, their sequential series; It is characterized in that, the stronger flow scheme design of described exchange capability of heat is installed rear surface at condenser and is accepted the larger region of air quantity, and the poor flow process of described condensing capacity then designs installs the not smooth region of rear surface air flowing at condenser.
2. air conditioning condenser for vehicle according to claim 1, it is characterized in that: the four flow process condensers thick stick that is insured being sheltered to middle part, first pass and the second flow process design the position, upper and lower at condenser respectively, and the third and fourth flow scheme design is in the centre position of condenser.
3. air conditioning condenser for vehicle according to claim 1, it is characterized in that: the five flow process condensers thick stick that is insured being sheltered to middle part, first pass and the second flow process design the position, upper and lower at condenser respectively, 4th and the 5th flow scheme design in the centre position of condenser, the position of the 3rd flow scheme design between the top and middle part of condenser.
4. air conditioning condenser for vehicle according to claim 1, it is characterized in that: the six flow process condensers thick stick that is insured being sheltered to middle part, first pass and the second flow process design the position, upper and lower at condenser respectively, 5th and the 6th flow scheme design in the centre position of condenser, the position of the third and fourth flow scheme design between the top and middle part of condenser and between bottom and middle part.
5. air conditioning condenser for vehicle according to claim 1, is characterized in that: described in there is the condenser of odd number flow process, refrigerant general import and general export are arranged on the header of phase the same side.
6. air conditioning condenser for vehicle according to claim 1, is characterized in that: described in there is the condenser of even number flow process, refrigerant general import and general export are arranged on phase the same side or not on homonymy header.
7. air conditioning condenser for vehicle according to claim 1, is characterized in that: the total import and export of refrigerant of described condenser is level, vertical or non-horizontal arrangement.
8. air conditioning condenser for vehicle according to claim 1, is characterized in that: the flat tube orientation of described condenser is level or vertical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531141.1U CN204063696U (en) | 2014-09-16 | 2014-09-16 | A kind of air conditioning condenser for vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531141.1U CN204063696U (en) | 2014-09-16 | 2014-09-16 | A kind of air conditioning condenser for vehicle |
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| CN204063696U true CN204063696U (en) | 2014-12-31 |
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| CN201420531141.1U Withdrawn - After Issue CN204063696U (en) | 2014-09-16 | 2014-09-16 | A kind of air conditioning condenser for vehicle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266414A (en) * | 2014-09-16 | 2015-01-07 | 重庆长安汽车股份有限公司 | Automotive air conditioning condenser adaptive to peripheral flow field |
| CN110285608A (en) * | 2019-07-29 | 2019-09-27 | 南方英特空调有限公司 | A kind of external condenser of new-energy automobile heat pump system |
| CN111213020A (en) * | 2017-10-11 | 2020-05-29 | 株式会社电装 | Heat exchanger |
-
2014
- 2014-09-16 CN CN201420531141.1U patent/CN204063696U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266414A (en) * | 2014-09-16 | 2015-01-07 | 重庆长安汽车股份有限公司 | Automotive air conditioning condenser adaptive to peripheral flow field |
| CN111213020A (en) * | 2017-10-11 | 2020-05-29 | 株式会社电装 | Heat exchanger |
| CN111213020B (en) * | 2017-10-11 | 2021-09-21 | 株式会社电装 | Heat exchanger |
| CN110285608A (en) * | 2019-07-29 | 2019-09-27 | 南方英特空调有限公司 | A kind of external condenser of new-energy automobile heat pump system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141231 Effective date of abandoning: 20171114 |
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| AV01 | Patent right actively abandoned |