CN103867280A - Heat dissipating system - Google Patents
Heat dissipating system Download PDFInfo
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- CN103867280A CN103867280A CN201410046079.1A CN201410046079A CN103867280A CN 103867280 A CN103867280 A CN 103867280A CN 201410046079 A CN201410046079 A CN 201410046079A CN 103867280 A CN103867280 A CN 103867280A
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- fan
- wind scooper
- heat dissipating
- heat exchanger
- slotted hole
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Abstract
The invention relates to a heat dissipating system. The heat dissipating system is used for solving the disadvantages of the existing heat dissipating systems that the air blasting rate of a fan is relatively low and the heat dissipating effect is poor caused due to the fact that the gap area between an air guiding hood and tips of fan blades is too large. The heat dissipating system provided by the invention comprises a heat exchanger and a fan facing to the heat exchanger, wherein an air guiding hood of a ventilating duct is formed between the fan and the heat exchanger, the fan is located in the air guiding hood, the internal hole of a position, where the fan is located, of the air guiding hood is a long circular hole, and the size of the long circular hole in the horizontal direction is smaller than that of the long circular hole in the vertical direction. According to the heat dissipating system, the characteristic that upward-downward vibration amplitude of an engine directly driven fan is greater than left-right horizontal vibration amplitude of the engine directly driven fan is utilized, the internal hole of the air guiding hood is designed into the long circular hole, then, the gap demand on upward-downward vibration of the fan is guaranteed, and gaps between the left and right sides of the air guiding hood and the tips of the fan blades are reduced, so that the air blasting rate of the fan is increased, and then, the heat dissipating effect of a heat dissipater is improved.
Description
Technical field
The present invention relates to a kind of radiation system, relate in particular to a kind of engineering mechanical radiating system.
Background technique
As the cooling unit of engineering machinery, common have a heat exchanger that flow dispels the heat in the heat of inner fluid; Face this heat exchanger arrangement and produce the fan of supplying with to the cooling air of this heat exchanger; And cover and be formed at the space between fan and heat exchanger and between fan and heat exchanger, form the wind scooper of ventilation flue.Fan is directly driven by motor.
But most practical application, the displacement that motor is all above-below direction with respect to the shake of vehicle frame is greater than the displacement of substantially horizontal.For example motor is in starting, and due to the piston movement characteristic of motor, upper and lower play tempestuously can occur motor; And for example crawler excavator is in lifting rapidly swing arm and putting down swing arm, what complete machine all may occur sticks up tail phenomenon, once and stick up tail phenomenon, motor can be tossed and be dropped, the pulling to motor at gravity accleration and vehicle frame, makes motor upper and lower displacement amount relative and vehicle frame larger.Same wheel loader is in passing through rough road surface, and motor also can be along with car load acutely shake up and down, and the fierceness of motor is rotated can the also shake thereupon of related fan.
And the existence that the known fact is wind scooper opening and fan leaf intercuspal space is to be the range error producing in order to make up in installation, setting that the more important thing is above-mentioned gap can be avoided in the time that violent shake occurs motor, or motor is because when the aging generation sedimentation of vibration damper, be fixed together with motor can relative engine revolution fan and above-mentioned wind scooper opening interfere and damage the serious like this fault of the parts such as fan.
Fan blade tip is larger with the gap of the corresponding opening of wind scooper, and wind is escaped just more from gap, and the air blast efficiency of fan is just lower, causes to extract from outside and to pass through the wind of heat exchanger just fewer, more affects the cooling effect of radiator.Therefore,, from this aspect, tip clearance is the smaller the better.The for example cooperation of general fan and wind scooper, when the ratio of tip clearance and fan diameter is less than 2.5%, fan efficiency will obviously improve.But, because the existence of motor shake and assembling machining error has to again fan leaf intercuspal space to do largerly.
But motor is in actual application operating mode, the shake of most of engine bodies can't have obvious displacement, motor affected by external force and produce larger displacement to have certain rule in each direction.For example, crawler hypraulic excavator exist because swing arm sharply lift and put down cause stick up tail phenomenon, motor is thrown high by vehicle frame in the time that excavator afterbody lifts, when afterbody lands, above-mentioned motor is dragged down and violent compression shock absorption pad, beam produces obvious deformation, thereby cause engine body and be fixed together with engine body, and can produce obvious upper and lower displacement relative to the fan rotating with body, this is also often the maximum displacement situation that on above-mentioned excavator, motor exists, the fan being fixed together with motor and can freely rotate is created on above-below direction with respect to the maximum displacement of vehicle frame, in substantially horizontal, motor is fixed together and smaller with respect to vehicle frame of the fan that can freely rotate, that is to say, said fans moving displacement relative and wind scooper opening is each to unequal feature.
And wind scooper of the prior art opening corresponding to fan is circular hole, each point on circular hole profile (hole wall) to the distance at center equates, as shown in Figure 1, fan can be adjusted into and the above-mentioned wind scooper circular hole concentric position of trying one's best when mounted, while shake with motor for fear of fan, encounter wind scooper and cause the damage of fan, wind scooper, gap between wind scooper and fan blade tip is with sufficiently large, the gap of in the vertical direction is the needs in order to meet fan shake, but in substantially horizontal, the air blast Efficiency Decreasing of fan is caused in excessive gap.
Summary of the invention
The object of the invention is to for interval area between wind scooper in existing radiation system and fan blade tip excessive and cause fan blast rate to provide a kind of compared with the shortcoming low, radiating effect is poor to make fan blade not and wind scooper interference and collision in the situation that and reduce the radiation system of interval area, raising fan blast rate and radiating effect between wind scooper and fan blade tip same.
Technological scheme of the present invention is achieved in that a kind of radiation system of structure, comprises heat exchanger; In the face of the fan of heat exchanger, between fan and heat exchanger, form the wind scooper of ventilation flue, fan is arranged in described wind scooper, fan rotates the pointed circular trajectory of its fan leaf under static state, and on circular rail trace top and bottom, each point to the radial distance of wind scooper endoporus sidewall is greater than on described trajectory left side and right side each point to the radial distance of wind scooper endoporus sidewall.Wind scooper is that upper and lower two ends are the slotted hole of arc profile at the endoporus at fan present position place, and the major diameter direction of slotted hole is vertical direction, is also the size that slotted hole size is in the horizontal direction less than vertical direction.In the present invention, the size of wind scooper endoporus is according to fan blade and the needed surplus of fan vibration, makes the gap between two ends up and down and the fan blade tip of wind scooper endoporus hole wall in the vertical direction meet fan vibration and avoid collision.The wind scooper endoporus hole wall in the horizontal direction gap of the left and right sides and fan blade tip is less than the gap of the upper and lower two ends of wind scooper endoporus hole wall in the vertical direction and fan blade tip.Thereby reduce the interval area between fan blade tip and wind scooper hole wall, thereby improve the air blast efficiency of fan, improve the radiating effect of radiator.
In foregoing invention, the circular arc of two ends up and down of slotted hole profile be two sections about Central Symmetry and concentric circular arc, the left and right sides of slotted hole profile is to connect the straight line of upper and lower circular arc.Or the left and right sides of slotted hole profile is to connect upper and lower circular arc and camber line in opposite directions, camber line reduces and finally equals the radius of upper and lower circular arc gradually along with the circular arc of lower end upwards extends its radius of curvature.The left and right sides is camber line, can increase fan oscillation space in the horizontal direction in the case of slightly increasing a small amount of ventilation gap, avoids the collision between substantially horizontal generation fan blade and wind scooper.
The beneficial effect that the present invention compared with prior art has: the present invention utilizes engine direct wind dispelling fan up-down vibration amplitude to be greater than the feature of left and right horizontal direction Oscillation Amplitude, the shape of wind scooper endoporus is designed to oval poroid, ensure the space demand of fan up-down vibration and reduced the gap between the wind scooper left and right sides and fan blade tip, thereby improved the air blast efficiency of fan and improve the radiating effect of radiator.
Brief description of the drawings
The stereogram of Fig. 1 welding wind scooper of the prior art;
Fig. 2 is the front projection schematic diagram of inside structure of the present invention;
Fig. 3 is the assembling schematic diagram rear view of wind scooper and fan in first embodiment of the invention;
Fig. 4 is the assembling schematic diagram of wind scooper and fan in the second embodiment.
Component title and sequence number in figure:
Heat exchanger 1, wind scooper 2, fixing bolt 3, fan spacer 4, fan 5, construction bolt 6.
Embodiment
Below in conjunction with brief description of the drawings specific embodiments.
Embodiment 1
As shown in Fig. 2 Fig. 3, in the present embodiment, heat exchanger 1 is fixedly mounted on vehicle frame by construction bolt 6, and wind scooper 2 is fixed on heat exchanger 1 by fixing bolt 3, and forms air channel.Fan 5 connects in succession by fan spacer 4 and engine direct, and fan is arranged in the endoporus of wind scooper and is rotated and driven Air Flow to produce wind by engine-driving, the heat exchanger of flowing through, thus reach cooling effect.In the present embodiment, the endoporus center concentric of the center of fan and wind scooper, fan rotates the pointed circular trajectory L3 of its fan leaf under static state, the opening endoporus of the corresponding fan of wind scooper is set to slotted hole, the major diameter direction of slotted hole is vertical direction, the last point of circular rail trace is to the radial distance of above-mentioned endoporus sidewall, on upper and lower, each point is long to the distance of wind scooper endoporus sidewall, on the left and right sides each point to wind scooper endoporus sidewall distance shorter, by such setting, wind scooper can ensure when the large displacement operating mode of the typical case of fan is up-down vibration not interfere with fan blade, can ensure that fan realized the landing of air end of blade and leakage still less at the weak displacement region of left and right directions simultaneously, realize more Wind Volume.
Fig. 3 is the first embodiment's front partial section view, wherein region A is the displacement of the fan in the vertical direction district of leaving a blank, under upper and lower and static state, the radial distance of fan leaf tongue trace L3 is larger, and left and right part is less with the radial distance of fan leaf tongue trace L3.B district, region is relatively and the region that dwindled of prior art, and B district is characterized in that intermediate radial size is large, and more past upper and lower radius vector is less to size.L1 is the outer contour in B district, region, and L2 is the profile line of wind scooper endoporus, and L3 is the fan wheel profile under quiescent conditions.Under current intelligence, L3 can produce along with fan vibration corresponding translation displacement amount.Technological scheme in the present embodiment is applicable in the vibration displacement amount of above-below direction larger, and the less machine of vibration displacement amount on left and right directions.
Compared with embodiment 1, its difference is the shape of the wind scooper endoporus left and right sides, as shown in Figure 4, in the present embodiment, in the profile line of wind scooper endoporus, the left and right sides is two sections of camber lines, and this camber line reduces and finally equal the radius of upper and lower circular arc gradually along with the circular arc of lower end upwards extends its radius of curvature.L2 is the profile line of wind scooper endoporus in the present embodiment, this profile line left-right asymmetry, wherein be greater than the radial distance to the static trajectory of fan blade tip at right side internal bore profile line at left side internal bore profile line to the radial distance of the static trajectory of fan blade tip, L4 is the profile line of wind scooper endoporus in embodiment 1, and the closed area that L2 and L4 surround is the district of additionally leaving a blank arranging toward the displacement of left direction larger vibration in order to dodge fan in the present embodiment.Under current intelligence, L3 can produce along with fan vibration corresponding translation displacement amount, and wherein the displacement of vibration is greater than the displacement of vibration to the right to the left.Technological scheme in the present embodiment is applicable in the vibration displacement amount of above-below direction larger, and vibration displacement amount in right is less, and the direction of turning left has the slightly machine of big displacement quantity.
Claims (5)
1. a radiation system, comprises heat exchanger; In the face of the fan of heat exchanger, between fan and heat exchanger, form the wind scooper of ventilation flue, described fan is arranged in described wind scooper, fan rotates the pointed circular trajectory of its fan leaf (L3) under static state, it is characterized in that on described circular rail trace top and bottom that each point to the radial distance of wind scooper endoporus sidewall is greater than on described trajectory left side and right side each point to the radial distance of wind scooper endoporus sidewall.
2. radiation system according to claim 1, is characterized in that described wind scooper is slotted hole at the endoporus at fan present position place, and the major diameter direction of described slotted hole is vertical direction.
3. radiation system according to claim 2, the circular arc that it is characterized in that the two ends up and down of described slotted hole profile is two sections of circular arcs about Central Symmetry and concentric.
4. radiation system according to claim 3, the left and right sides that it is characterized in that described slotted hole profile is the straight line that connects upper and lower circular arc.
5. radiation system according to claim 3, the left and right sides that it is characterized in that described slotted hole profile is to connect the camber line of upper and lower circular arc, described camber line reduces and finally equals the radius of upper and lower circular arc gradually along with the circular arc of lower end upwards extends its radius of curvature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410046079.1A CN103867280A (en) | 2014-02-10 | 2014-02-10 | Heat dissipating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410046079.1A CN103867280A (en) | 2014-02-10 | 2014-02-10 | Heat dissipating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103867280A true CN103867280A (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410046079.1A Pending CN103867280A (en) | 2014-02-10 | 2014-02-10 | Heat dissipating system |
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| Country | Link |
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| CN (1) | CN103867280A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562183A (en) * | 2021-09-07 | 2021-10-29 | 北京航空航天大学 | Heat dissipation and vibration reduction system of engine direct-drive hybrid power device for unmanned aerial vehicle |
-
2014
- 2014-02-10 CN CN201410046079.1A patent/CN103867280A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113562183A (en) * | 2021-09-07 | 2021-10-29 | 北京航空航天大学 | Heat dissipation and vibration reduction system of engine direct-drive hybrid power device for unmanned aerial vehicle |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: Pull the the Liujiang River city Liuzhou County town Shuangyong road 545100 the Guangxi Zhuang Autonomous Region Applicant after: Liugong Machinery Co., Ltd. Applicant after: LIUGONG CHANGZHOU MACHINERY CO., LTD. Applicant after: Guangxi Liugong Machinery Co., Ltd. Address before: Pull the the Liujiang River city Liuzhou County town Shuangyong road 545100 the Guangxi Zhuang Autonomous Region Applicant before: Liugong Machinery Co., Ltd. Applicant before: Liugong Changzhou Excvavtor Co., Ltd. Applicant before: Guangxi Liugong Machinery Co., Ltd. |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140618 |