CN102050010A - Forced air exhaust heat dissipation structure of rear engine compartment of passenger car - Google Patents
Forced air exhaust heat dissipation structure of rear engine compartment of passenger car Download PDFInfo
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- CN102050010A CN102050010A CN2010106109033A CN201010610903A CN102050010A CN 102050010 A CN102050010 A CN 102050010A CN 2010106109033 A CN2010106109033 A CN 2010106109033A CN 201010610903 A CN201010610903 A CN 201010610903A CN 102050010 A CN102050010 A CN 102050010A
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Abstract
The invention discloses a forced air exhaust heat dissipation structure of a rear passenger car engine compartment, and belongs to the field of automobiles. The forced air exhaust heat dissipation structure of the rear engine compartment of the passenger car comprises a forced air exhaust device arranged in the engine compartment, a partition board for dividing the engine compartment into an upper engine compartment and a lower engine compartment is arranged above the engine compartment, the partition board and the upper engine compartment form an exhaust duct, an upper air outlet communicated with the atmosphere is arranged on the exhaust duct, the partition board is hermetically connected with the inner side of the engine compartment, an air inlet communicated with the lower engine compartment is arranged on the partition board, and the forced air exhaust device is arranged at the air inlet. The engine compartment is additionally provided with the partition plate, and the forced air exhaust device is arranged at the air inlet of the partition plate, so that the problems of poor stability and reliability and low heat dissipation efficiency of the fixation of the forced air exhaust device are solved, and the engine compartment is simple in structure, good in universality and convenient to install. The heat dissipation device is suitable for heat dissipation of the engine compartment.
Description
Technical field
The present invention relates to automotive field, relate in particular to a kind of rearmounted bus engine cabin and force the air discharging and radiating structure.
Background technology
Before the present invention proposes, the fitfull space that the machinery space of rearmounted passenger vehicle generally is made up of side-wall outer-plate, back wall outside plate and floor, back, the low thermal current that can make of machinery space radiating efficiency is difficult to discharge smoothly, thermal current is collected in the machinery space, make cabin temperature high, to cause the engine body temperature too high easily for Tab phenolphthaleinum thereafter, and passenger vehicle can not normally be exercised, may cause fault, initiation fire when serious.In addition, machinery space long term high temperature work meeting reduces fuel economy, and the degree of aging of chassis, vehicle body and electric fittings in the boost engine cabin, reduction of service life.The radiating mode of known machinery space has following dual mode:
The one, take the natural heat dissipation mode, be specially: passenger vehicle side-wall outer-plate and back wall outside plate all have breather port, the breather port air intake on the side-wall outer-plate, the breather port air-out on the back wall outside plate forms heat dissipation channel and carries out natural heat dissipation.Mainly there is the low problem of radiating efficiency in this kind natural heat dissipation mode, can not satisfy rearmounted passenger vehicle and normally use the heat-dissipation demand.Particularly rearmounted bus engine cabin heat dissipation problem is more outstanding about 8～9 meters, because rear overhang is short, and rear deck space anxiety, radiator-water box can't further strengthen, and heat-dissipating space is limited, and radiating efficiency is low.When summer high-temperature weather is runed, domestic similar this type of problem of passenger vehicle ubiquity.Radiating efficiency is low mainly to be owing to multiple reason is unfavorable for forming the natural heat dissipation passage, and be specially: during (1) bus driving, afterbody is a zone of negative pressure behind the passenger vehicle, air turbulence, the pressure of machinery space air draft is little, forms the inclement condition that satisfies the natural ventilating pressure difference, turbulent phenomenon occurs; (2) elevated temperature heat sources such as machinery space inner cylinder body, retarder, exhaust muffler, various supercharging equipment and heating electricity piece are intensive, thermal current with increased the weight of the interior air turbulence of machinery space mixing of natural air; (3) because the restriction of the different and arrangement of passenger-carrying chassis parts assembly causes heat dissipation channel itself not smooth.
The 2nd, take the forced heat radiation mode, Chinese patent CN2848615 discloses rearmounted bus engine cabin heat abstractor, comprises air channel and air exhausting device, and the ventilation inlet in air channel communicates with engine nacelle, the air outlet in air channel communicates with atmosphere, and inside, air channel is equipped with air exhausting device.The waist that the air channel is positioned at the passenger vehicle back wall is higher than the position of driving engine; Air channel ventilation inlet end axially is horn-like along it, and cross-sectional plane is oval, and area is greater than the air opening end cross-sectional plane, and the air channel ventilation inlet is facing to engine block; Stage casing, air channel cross-sectional plane is circular, and internal diameter is between φ 100～φ 400mm; Air outlet communicates with atmosphere by the back wall barrier.This kind forced heat radiation mode makes moderate progress than natural heat dissipation mode heat-sinking capability, but still have following problem: (1) is subjected to the restriction of arrangement space and mounting structure, this device only is confined to satisfy normal heat-dissipation demand, can't further promote the machinery space radiating efficiency.(2) the suspension type mounting means stability that adopts owing to the restriction of heat radiation and mounting structure is not enough, and this heat abstractor vibrates easily when bus driving, influences stability in use and reliability.
Along with the progressively upgrading of engine emission restriction and the deep application of electrical technology, driving engine and electric accessories that rearmounted bus engine cabin is arranged can progressively increase, and corresponding thermal source can increase gradually, and the temperature of machinery space is further raise; Because the layout closeness of the parts of machinery space can increase, and machinery space heat-dissipation condition can be more abominable, above-mentioned natural heat dissipation mode and forced heat radiation mode can not satisfy the heat radiation requirement of machinery space more simultaneously.
Summary of the invention
The objective of the invention is in order to solve the deficiency that the above-mentioned background technology exists, propose a kind of simple in structure, the radiating efficiency height, easy for installation, the air discharging and radiating structure is forced in the rearmounted bus engine cabin of stability and good reliability.
For achieving the above object, the present invention adopts following technical scheme: the air discharging and radiating structure is forced in rearmounted bus engine cabin, comprise the pressure air exhausting device that is arranged in the machinery space, described machinery space top is provided with machinery space is divided into the dividing plate of going up machinery space and following machinery space, this dividing plate and last machinery space are formed air exhausting duct, this air exhausting duct is provided with the last exhaust outlet that communicates with atmosphere, described dividing plate is connected with the machinery space inner seal, dividing plate is provided with the ventilation inlet that communicates with following machinery space, and described pressure air exhausting device is installed in the ventilation inlet place.
In such scheme, the described area of going up the area of exhaust outlet greater than described ventilation inlet, like this, effectively exhaust air rate is big, good heat dissipation effect.
In such scheme, also be provided with the following exhaust outlet that communicates with atmosphere on the described down machinery space outer wall, the heat in the machinery space not only can be discharged from the above-mentioned exhaust outlet of going up like this, can also be from exhaust outlet discharge down, thus further improved radiating efficiency.
In such scheme, the described exhaust outlet of going up is arranged in described going up on the machinery space outer wall, makes exhaust outlet and following exhaust outlet arranged apart, and independent separately outwards discharges heat is not disturbed the radiating efficiency height mutually.
In such scheme, described air exhausting duct is made up of the back floor and the back wall outside plate of dividing plate, coaming plate and last machinery space, this air exhausting duct shape is horn-like or taper, baffle arrangement is at the little head end of described horn-like or taper air exhausting duct, the described exhaust outlet of going up is arranged in stub end horn-like or the taper air exhausting duct, with the area that guarantees exhaust outlet area, increased effective exhaust air rate, thereby improved radiating effect greater than ventilation inlet.
In such scheme, described coaming plate is by a middle deflecting plate, two side baffle upper plates and two side chin spoiler splicings are formed, described two side chin spoilers respectively with the left side of dividing plate, right both sides link to each other, described two side baffle upper plates respectively with the left side of middle deflecting plate, right both sides link to each other, described baffle upper plate links to each other with the rear side of described chin spoiler with the dividing plate splicing construction with the downside of middle deflecting plate splicing construction, wherein, the downside of middle deflecting plate is corresponding with the rear side of dividing plate, with the area that guarantees exhaust outlet area greater than ventilation inlet, increase effective exhaust air rate, thereby the raising radiating effect, and commonality is good.
In such scheme, the outward flange of deflecting plate and side baffle upper plate is respectively equipped with flange is installed in described, the outward flange of described side chin spoiler is provided with the back flange is installed, like this, for contacting with face, face is connected between described coaming plate and the machinery space inboard, accurate positioning, easy for installation and connectivity robustness is better.
In such scheme, plane, described ventilation inlet place and horizontal surface are 0～45 (shown in angle α among Fig. 2) towards headstock direction (as arrow W direction among Fig. 1), help forcing air exhausting device in machinery space, to suck more hot air, thereby improve radiating efficiency.
In such scheme, the lowest part of described dividing plate has the discharge orifice, and rainwater can be flowed out from this discharge orifice, to guarantee to force air exhausting device energy normal operation.
In such scheme, the described exhaust outlet outside of going up is provided with the dash grid, enters air exhausting duct to prevent rainwater.
In such scheme, the described exhaust outlet down outside is provided with the dash grid, enters machinery space to prevent rainwater.
The present invention is by adding dividing plate in machinery space, and will force air exhausting device to be installed in the ventilation inlet place of this dividing plate, solved and forced air exhausting device fixing stability and poor reliability and the low problem of radiating efficiency, and simple in structure, commonality is good, and is easy for installation; On the other hand, the area of last exhaust outlet has increased effective exhaust air rate greater than the area of ventilation inlet, thereby has improved radiating efficiency; Again on the one hand, adopt at following machinery space and offer the design of exhaust outlet down, like this, the heat in the machinery space not only can be discharged from the above-mentioned exhaust outlet of going up, and can also discharge from following exhaust outlet, thereby further improve radiating efficiency.
The present invention has simple in structure, and is easy for installation, stable, fixing good reliability, characteristics such as good endurance and commonality are good.
Description of drawings
Fig. 1 is the assembling cross-sectional view of embodiment.
Fig. 2 is the local structure for amplifying scheme drawing of Fig. 1.
Fig. 3 is the side-looking structural representation of Fig. 1.
Fig. 4 is the stravismus structural representation of Fig. 1.
Fig. 5 is the position relational structure scheme drawing of dividing plate and coaming plate.
Fig. 6 is the side-looking structural representation of Fig. 5.
Fig. 7 is the structural representation of D behind the view left-hand revolution of Fig. 6.
Fig. 8 is the stravismus structural representation of dividing plate and coaming plate position relation.
Among the figure, last machinery space-11, following machinery space-12, back floor-13, back wall outside plate-14, dividing plate-21, force air exhausting device-22, discharge orifice-23, last exhaust outlet-31, ventilation inlet-32, following exhaust outlet-33, middle deflecting plate-41, side baffle upper plate-42, side chin spoiler-43, on flange-44 is installed, flange-45 is installed in the back.
The specific embodiment
As shown in Figure 1, present embodiment comprises the pressure air exhausting device 22 that is arranged in the machinery space, dividing plate 21 and coaming plate, described dividing plate 21 is divided into machinery space on the dividing plate 21 of going up machinery space 11 and following machinery space 12, this dividing plate 21, air exhausting duct is formed with back wall outside plate 14 in the back floor 13 of coaming plate and last machinery space 11, this air exhausting duct is provided with the last exhaust outlet 31 that communicates with atmosphere, described dividing plate 21 is connected with the machinery space inner seal, dividing plate 21 is provided with the ventilation inlet 32 that communicates with following machinery space 12, described pressure air exhausting device 22 is installed in ventilation inlet 32 places, and, also can power certainly by other modes by the vehicle power power supply.The described area (referring to Fig. 2, Fig. 3 and Fig. 4) of going up the area of exhaust outlet 31 greater than described ventilation inlet 32.Certainly, the quantity of described ventilation inlet 32 and pressure air exhausting device 22 can be 1 or more respectively, can design according to actual conditions.
As shown in Figure 5, described coaming plate is made up of a middle deflecting plate 41, two side baffle upper plates 42 and two side chin spoilers 43 splicings, described two side chin spoilers 43 link to each other with the and arranged on left and right sides of dividing plate 21 respectively, described two side baffle upper plates 42 link to each other with the and arranged on left and right sides of middle deflecting plate 41 respectively, described baffle upper plate 42 links to each other with the rear side of described chin spoiler 43 with dividing plate 21 splicing constructions with the downside of middle deflecting plate 41 splicing constructions, wherein, the downside of middle deflecting plate 41 corresponding with the rear side of dividing plate 21 (referring to Fig. 6, Fig. 7 and Fig. 8).Certainly, middle deflecting plate 41, two side baffle upper plates 42 also can be integral structure, and then form coaming plates with 43 splicings of two side chin spoilers respectively, and this coaming plate links to each other with dividing plate 21 at last again, also can be designed to other array mode according to actual conditions.
As shown in Figure 6, the outward flange of deflecting plate 41 and side baffle upper plate 42 is respectively equipped with flange 44 is installed in described, the outward flange of described side chin spoiler 43 is provided with the back flange 45 is installed, and the coaming plate of being made up of middle deflecting plate 41, two side baffle upper plates 42 and two side chin spoilers 43 splicings can be installed flange 44 and back installation flange 45 be welded in the machinery space by described going up like this.Certainly, also can described coaming plate be fastened on (referring to Fig. 7 and Fig. 8) in the machinery space by bonding composite material and sealing vibration damping mode.
As shown in Figure 8, described air exhausting duct shape is horn-like or taper, and dividing plate 21 is arranged in the little head end of described horn-like or taper air exhausting duct, describedly goes up the stub end (referring to Fig. 3 and Fig. 5) that exhaust outlet 31 is arranged in horn-like or taper air exhausting duct.
As shown in Figure 2, also be provided with the following exhaust outlet 33 that communicates with atmosphere on described following machinery space 12 outer walls, this time exhaust outlet 33 specifically is opened on the back wall outside plate 14 of machinery space.The described exhaust outlet 31 of going up is arranged in described going up on machinery space 11 outer walls, specifically also is opened on the back wall outside plate 14 of machinery space, and is positioned at described exhaust outlet 33 tops (referring to Fig. 1 and Fig. 3) down.Certainly, also can only offer exhaust outlet 31, only use the forced heat radiation mode to dispel the heat.
As shown in Figure 2, described ventilation inlet plane, 32 place and horizontal surface are 0～45 towards the headstock direction.The lowest part of described dividing plate 21 has discharge orifice 23, and the quantity of this discharge orifice 23 can design according to actual needs.The described exhaust outlet 31 of going up is respectively equipped with dash grid (referring to Fig. 1) with following exhaust outlet 33 outsides.
Mode of operation of the present invention is as follows:
As shown in Figure 1, when temperature in the machinery space was not high, passenger vehicle taked the natural heat dissipation mode to dispel the heat, and flowing shown in arrow I-III-VI among the figure of wind along the breather port air intake on the side-wall outer-plate, discharged by following exhaust outlet 33 behind the process machinery space; When temperature is higher in the machinery space, pressure air exhausting device 22 of the present invention is opened, like this, on the basis of natural heat dissipation mode, increased the forced heat radiation mode, flowing shown in arrow I-III-VI and I-II-IV-V among the figure of wind, this moment natural heat dissipation mode and forced heat radiation mode and deposit, in the forced heat radiation mode.Shown in the air exhaust passage connection and reasonable arrangement, wind mobile smooth and easy, and do not influence the natural heat dissipation mode so force the unlatching of air exhausting device 22 can increase substantially the radiating efficiency of machinery space, effectively reduces the temperature of machinery space.
Claims (11)
1. the air discharging and radiating structure is forced in a rearmounted bus engine cabin, comprise the pressure air exhausting device (22) that is arranged in the machinery space, it is characterized in that described machinery space top is provided with the dividing plate (21) that machinery space is divided into last machinery space (11) and following machinery space (12), this dividing plate (21) is formed air exhausting duct with last machinery space (11), this air exhausting duct is provided with the last exhaust outlet (31) that communicates with atmosphere, described dividing plate (21) is connected with the machinery space inner seal, dividing plate (21) is provided with the ventilation inlet (32) that communicates with following machinery space (12), and described pressure air exhausting device (22) is installed in ventilation inlet (32) and locates.
2. the air discharging and radiating structure is forced in rearmounted bus engine according to claim 1 cabin, it is characterized in that the described area of going up the area of exhaust outlet (31) greater than described ventilation inlet (32).
3. the air discharging and radiating structure is forced in rearmounted bus engine according to claim 1 cabin, it is characterized in that also being provided with the following exhaust outlet (33) that communicates with atmosphere on described following machinery space (12) outer wall.
4. the air discharging and radiating structure is forced in rearmounted bus engine according to claim 1 and 2 cabin, it is characterized in that the described exhaust outlet (31) of going up is arranged in described going up on machinery space (11) outer wall.
5. the air discharging and radiating structure is forced in rearmounted bus engine according to claim 1 and 2 cabin, it is characterized in that described air exhausting duct is made up of the back floor (13) of dividing plate (21), coaming plate and last machinery space (11) and back wall outside plate (14), this air exhausting duct shape is horn-like or taper, dividing plate (21) is arranged in the little head end of described horn-like or taper air exhausting duct, and the described exhaust outlet (31) of going up is arranged in stub end horn-like or the taper air exhausting duct.
6. the air discharging and radiating structure is forced in rearmounted bus engine according to claim 5 cabin, it is characterized in that described coaming plate is by a middle deflecting plate (41), two side baffle upper plates (42) and two side chin spoilers (43) splicing are formed, described two side chin spoilers (43) respectively with the left side of dividing plate (21), right both sides link to each other, described two side baffle upper plates (42) respectively with the left side of middle deflecting plate (41), right both sides link to each other, described baffle upper plate (42) links to each other with the rear side of described chin spoiler (43) with dividing plate (21) splicing construction with the downside of middle deflecting plate (41) splicing construction, wherein, the downside of middle deflecting plate (41) is corresponding with the rear side of dividing plate (21).
7. the air discharging and radiating structure is forced in rearmounted bus engine according to claim 6 cabin, the outward flange that it is characterized in that described middle deflecting plate (41) and side baffle upper plate (42) is respectively equipped with installation flange (44), and the outward flange of described side chin spoiler (43) is provided with the back flange (45) is installed.
8. the air discharging and radiating structure is forced in rearmounted bus engine according to claim 1 and 2 cabin, it is characterized in that described ventilation inlet (32) plane, place and horizontal surface are 0～45 towards the headstock direction.
9. the air discharging and radiating structure is forced in rearmounted bus engine according to claim 1 and 2 cabin, it is characterized in that the lowest part of described dividing plate (21) has discharge orifice (23).
10. the air discharging and radiating structure is forced in rearmounted bus engine according to claim 1 and 2 cabin, it is characterized in that described exhaust outlet (31) outside of going up is provided with the dash grid.
11. the air discharging and radiating structure is forced in rearmounted bus engine according to claim 3 cabin, it is characterized in that described exhaust outlet (33) outside down is provided with the dash grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010610903 CN102050010B (en) | 2010-12-29 | 2010-12-29 | Forced air exhaust heat dissipation structure of rear engine compartment of passenger car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010610903 CN102050010B (en) | 2010-12-29 | 2010-12-29 | Forced air exhaust heat dissipation structure of rear engine compartment of passenger car |
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| CN102050010A true CN102050010A (en) | 2011-05-11 |
| CN102050010B CN102050010B (en) | 2013-03-27 |
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| CN 201010610903 Active CN102050010B (en) | 2010-12-29 | 2010-12-29 | Forced air exhaust heat dissipation structure of rear engine compartment of passenger car |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106573531A (en) * | 2014-05-28 | 2017-04-19 | 威克斯科技有限责任公司 | Air-cooled heat exchange system |
| CN107284284A (en) * | 2017-07-27 | 2017-10-24 | 厦门金龙联合汽车工业有限公司 | A kind of special fuel cell system subdivision of car |
| CN107813698A (en) * | 2016-09-14 | 2018-03-20 | 铃木株式会社 | Vehicle cooling device |
| CN107839472A (en) * | 2016-09-20 | 2018-03-27 | 湖南工业大学 | A kind of rear-mounted engine cabin of passenger car heat abstractor and its mounting means |
| CN108087840A (en) * | 2017-12-11 | 2018-05-29 | 上海小糸车灯有限公司 | Cooling system and car light |
| CN114056082A (en) * | 2021-12-21 | 2022-02-18 | 集瑞联合重工有限公司 | Control method of active air inlet grille |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106573531A (en) * | 2014-05-28 | 2017-04-19 | 威克斯科技有限责任公司 | Air-cooled heat exchange system |
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| CN108087840A (en) * | 2017-12-11 | 2018-05-29 | 上海小糸车灯有限公司 | Cooling system and car light |
| CN114056082A (en) * | 2021-12-21 | 2022-02-18 | 集瑞联合重工有限公司 | Control method of active air inlet grille |
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|---|---|
| CN102050010B (en) | 2013-03-27 |
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Owner name: DONGFENG CAR CO. Free format text: FORMER OWNER: DONGFENG AUTOMOBILE CO., LTD. Effective date: 20130708 |
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Effective date of registration: 20130708 Address after: 430056 Wuhan economic and Technological Development Zone, Hubei Province, Dongfeng Road, No. 1, No. Patentee after: Dongfeng Motor Corporation Address before: 430056 Dongfeng Road, Wuhan Economic & Technological Development Zone, Hubei, Wuhan, China, No. 10 Patentee before: DONGFENG MOTER Co.,Ltd. |