A kind of vibrating enhanced heat transfer unit (HTU) of automobile radiators
Technical field
The present invention relates to radiator cooling technology field more particularly to a kind of vibrating enhanced heat transfer unit (HTU)s of automobile radiators.
Background technique
Automobile radiators are dispersed heat extra in engine by heat convection, to guarantee engine suitable
At a temperature of securely and reliably work.It is low that ideal radiator has both small radiating efficiency height, overall dimensions, light weight and manufacturing cost
Feature, the keen competition between the development and radiator manufacturing enterprise of modern automobile industry are just pushing radiator towards Utopian side
To development.The key of heat sink technology development is that its radiating efficiency is continuously improved, and could reduce size and quality in this way.Last century
Since the sixties, along with the development of heat transfer enhancement technology, automobile radiators are continuously improved and are innovated on structure and material, most
Very widely used today corrugated tube type and pipe sheet type structure are developed into eventually, however the structure of these radiators sufficiently optimizes, has
Very efficient heat-transfer effect, such as pipe rock radiator is using heat-radiation belt as extending secondary heat-transfer area, and with fin blinds
Window carries out flow-disturbing, realizes compound intensified heat-transfer;Therefore the correlative study of automobile radiators is also merely resting on pair for over ten years
The effective method for improving exchange capability of heat is not found in the optimization of characteristic parameter under existing structure.
Numerous studies point out that the shutter in automobile radiators can destroy the growth in boundary layer, are very efficient
Heating surface, under high reynolds number, gas side air-flow can more be flowed along shutter channel, and flow-disturbing effect is obvious at this time, heat transfer
Effect is preferable;However under low reynolds number, based on air-flow is flowed with fin channels, the effect of shutter cannot be played, heat transfer
Effect is also poor, this illustrates that existing heat spreader structures can not play its advantage under low reynolds number, still has and further enhances
The potentiality of heat dissipation, in other words, as long as the flow-disturbing ability of heat transfer wall under low reynolds number can be tried every possible means to improve, so that it may so that existing dissipate
Hot device obtains higher radiating efficiency.
It is not difficult to find out that (engine power is increasing, and the space of automobile is got over for the development of auto industry by above-mentioned introduce
Come compacter, narrow) require automobile radiators that there is higher radiating efficiency, and existing heat spreader structures still have into one
Step improves the potentiality of radiating efficiency, it is therefore desirable to seek new automobile radiators augmentation of heat transfer means, obtain higher radiator
Radiating efficiency, to meet the needs of social development.
Since the 1960s, the heat transfer enhancement technology of field of heat exchangers flourishes, and vibrating enhanced heat transfer technology obtains
To numerous studies, research finds that Wall Vibration can be improved heat transfer efficiency, and the effect of augmentation of heat transfer and oscillation intensity are positively correlated;
The application of the vibrating enhanced heat transfer means of field of heat exchangers is also very extensive, but useless is always closed on automobile radiators
It infuses, the mechanism that in fact vibration acts on enhancing heat transfer by flow-disturbing is similar with the mechanism of shutter, this gives the reinforcing biography of radiator
Heat provides good thinking.
Summary of the invention
The technical issues of present invention mainly solves in the presence of the prior art, changes to provide a kind of raising radiating convection
The vibrating enhanced heat transfer unit (HTU) of the automobile radiators of the thermal efficiency.
Above-mentioned technical problem of the invention is mainly to be addressed by following technical proposals:
The vibrating enhanced heat transfer unit (HTU) of a kind of automobile radiators of the invention, including radiator, the radiator both ends difference
Left elastic vibration device and right elastic vibration device are installed, the left elastic vibration device is identical with right elastic vibration device structure, wraps
The side plate connecting with the radiator is included, bearing block is installed on the side plate, guiding axis, and institute are equipped in the bearing block
State bearing block upper end guiding axis also extend through the upper limb side of bracket after be connected with position limit device, the bearing block lower end is led
It is connected after also extending through the bottom wing side of bracket to axis with lower caging device, pacifies on the guiding axis between the bearing block and upper limb side
Equipped with upper spring, lower spring is installed on the guiding axis between the bearing block and bottom wing side.
Further, the position limit device is identical with lower caging device structure, includes the nut being spirally connected with guiding axis,
Gasket is additionally provided between the nut and the bracket.
Further, also it is evenly equipped at least three groups of balls being vertically arranged between the bearing block and guiding axis, same group
Ball is fixed by a retainer, and multiple clearance holes are offered on the retainer, and same group of ball is mounted on the same guarantor
It holds in each clearance hole on frame, the retainer is fixedly connected with the bearing seat.
Further, multiple arc raceways are additionally provided in the bearing block, same group of ball is mounted on an arc raceway
It is interior.
Further, retainer mounting groove, the guarantor are offered on the bearing block inner wall at each arc raceway
Frame is held to be mounted in retainer mounting groove.
Further, each clearance hole is bellmouth, and the path of the bellmouth is less than ball diameter, the cone
The major diameter in shape hole is greater than ball diameter.
Further, the depth of the arc raceway is greater than the radius of ball, and the diameter of the clearance hole is less than described
The diameter of ball.
Further, the original length of the upper spring is less than the original length of lower spring.
Further, the bearing block is connect by connecting plate with side plate, is set on the side plate at left and right sides of the bearing block
There are multiple first mounting holes, multiple second mounting holes are additionally provided on the side plate of the bearing block upper and lower ends.
Compared with the prior art, the advantages of the present invention are as follows: when running car, due to Uneven road and automobile engine
Crank rotation will lead to automobile radiators and car body followed to do forced vibration together, this vibration is space form, i.e. radiator exists
The direction of top to bottom, left and right, front and rear three vibrates, for before and after the pipe rock radiator of single flow installation and two sides in left and right
Upward vibration influences very little to heat transfer, and after installing left elastic vibration device and right elastic vibration device, radiator is original up and down
The vibration in direction can reinforce (elastic connection increases its amplitude) under the action of upper spring and lower spring, due to normal wind speed
Under, the flowing in the shutter of gas side is extremely difficult to turbulent flow, and big amplitude will necessarily significantly improve gas side heat exchange efficiency, and largely grind
To study carefully and shows that the thermal resistance of water-cooled automobile radiator is mainly derived from gas side, whole exchange capability of heat in this way can be enhanced, from
And achievees the purpose that strengthen using vibration realizing automobile radiators and radiate.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the vibrating enhanced heat transfer unit (HTU) of automobile radiators of the invention;
Fig. 2 is the explosive view of right elastic vibration device of the invention;
Fig. 3 is the main view of right elastic vibration device of the invention;
Fig. 4 is the left view of right elastic vibration device of the invention;
Fig. 5 is the top view of right elastic vibration device of the invention;
Fig. 6 is the cross-sectional view of line B-B in Fig. 4;
Fig. 7 is the cross-sectional view of line A-A in Fig. 5;
Fig. 8 is the structural schematic diagram of one bottom bracket of the embodiment of the present invention;
Fig. 9 is the structural schematic diagram of retainer of the invention;
Figure 10 is the structural schematic diagram of bracket of the invention;
Figure 11 is the structural schematic diagram of guiding axis of the invention;
Figure 12 is the partial enlarged view in the embodiment of the present invention one at arc raceway section;
Figure 13 is the partial enlarged view in the embodiment of the present invention two at arc raceway section;
Figure 14 is the structural schematic diagram of two bottom bracket of the embodiment of the present invention.
Description of symbols: A, right elastic vibration device, B, radiator, C, left elastic vibration device, A1, nut, A2, gasket,
A3, lower spring, A4, guiding axis, A5, upper spring, A6, gasket, A7, nut, A8, bracket, A9, retainer, A10, bearing block,
A11, side plate, A12, ball, A40, lower thread segment, A41, smooth section, A42, upper thread segment, A43, guiding axis inner hole, A80, on
Location hole is held, A81, upper limb side, A82, bracket ear, A83, bolt hole, A84, bottom wing side, A86, A85, lower end location hole add
Strengthening tendons, A90, retainer bottom wing side, A91, clearance hole, A92, retainer upper limb side, A93, screw hole, A94, screw hole, A100,
Arc raceway, A101, retainer mounting groove, A102, the first mounting hole, A103, the second mounting hole, A110, upper bolt aperture,
A111, bolt hole, A112, lower screw hole.
Specific embodiment
The preferred embodiment of the present invention is described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
Embodiment one
Referring to FIG. 1 to 7, the vibrating enhanced heat transfer unit (HTU) of a kind of automobile radiators provided by the invention, including heat dissipation
The both ends device B, radiator B are separately installed with left elastic vibration device C and right elastic vibration device A, left elastic vibration device C and right elastic vibrating
Dynamic device A structure is identical, includes the side plate A11 connecting with radiator B, bearing block A10, bearing block A10 are equipped on side plate A11
In be equipped with guiding axis A4, and the guiding axis A4 of the upper end bearing block A10 also extend through the upper limb side A81 of bracket A8 after filled with upper limit
It setting and is connected, the guiding axis A4 of the lower end bearing block A10 is connected after also extending through the bottom wing side A84 of bracket A8 with lower caging device,
Upper spring A5 is installed, between bearing block A10 and bottom wing side A84 on the guiding axis A4 between bearing block A10 and upper limb side A81
Lower spring A3 is installed, it is preferred that the original length of upper spring A5 is less than the original length of lower spring A3, lower bullet on guiding axis A4
Spring A3 is pressure-proof spring, has biggish rigidity, on the one hand supports heatsink weight, on the other hand increases radiator vibration vibration
Width, and reduce impact force suffered by radiator, the effect of upper spring A5, which is to play when radiator vibration, prevents bearing block A10 and branch
The effect to collide between frame A8.
When running car, since Uneven road and automobile engine crankshaft rotation will lead to automobile radiators B Following Car
Body does forced vibration together, this vibration is space form, i.e. radiator B shakes in the direction of top to bottom, left and right, front and rear three
It is dynamic, very little is influenced on heat transfer for the vibration before and after the pipe rock radiator of single flow installation and in the both direction of left and right, works as peace
After filling left elastic vibration device C and right elastic vibration device A, the vibration of the original up and down direction of radiator B can be in upper spring A5 under
Reinforce (elastic connection increases its amplitude) under the action of spring A3, since under normal wind speed, the flowing in the shutter of gas side is very
Difficulty reaches turbulent flow, and big amplitude will necessarily significantly improve gas side heat exchange efficiency, and a large number of studies show that water-cooled automobile radiator
Thermal resistance be mainly derived from gas side, whole exchange capability of heat can be enhanced in this way, utilize vibration realizing automobile to reach
Radiator strengthens the purpose of heat dissipation.
In the present embodiment, three groups of ball A12 being vertically arranged also are evenly equipped between bearing block A10 and guiding axis A4, often
Group ball A12 angle is 120 °, and same group of ball A12 is fixed by a retainer A9, reduces guiding axis A4 in bearing block
Moved up and down in A10 when frictional force, improve vibration performance, 4 groups, 5 groups or other quantity also can be set in ball A12.
As shown in fig.9, offering multiple clearance hole A91 on retainer A9, same group of ball A12 is mounted on the same retainer A9
Each clearance hole A91 in, retainer A9 is fixedly connected with bearing block A10, by clearance hole A91 by same group of each rolling
Pearl A12 is evenly distributed, and when rolling will not mutually hit.
As shown in fig.8, being additionally provided with multiple arc raceway A100 in bearing block A10, same group of ball A12 is mounted on one
In arc raceway A100.Arc raceway A100 avoids force localization in a bit when contacting with ball A12, can improve ball
The fatigue strength of A12 and arc raceway A100.
As shown in fig.10, bracket A8 includes connecting plate, the connecting plate top is connected with upper limb side A81, and its underpart connects
It is connected to bottom wing side A84, upper end location hole A80 is offered on the A81 of upper limb side, lower end location hole A85 is offered on the A84 of bottom wing side,
And multiple bracket ear A82 are additionally provided on the connecting plate, bolt hole A83 is offered on each bracket ear A82, is passed through
Bolt hole A83 is connect with automobile bolt, and two reinforcing rib A86 are welded in the bottom bracket A8, to enhance bending strength.
Refering to fig. 1 shown in 1, guiding axis A4 includes sequentially connected lower thread segment A40, smooth section A41, upper thread segment A42,
Lower thread segment A40 is for connecting lower caging device, and upper thread segment A42 is for connecting position limit device.Preferably, position limit device
Including the nut A7 and gasket A6 being threaded through on upper thread segment A42, lower caging device includes the nut for being threaded through lower thread segment A40
A1 and gasket A2, nut and gasket play locking and positioning adjustment effect, and limiting device can also use circlip to guiding axis A4
It limits, guiding axis A4 is hollow shaft in the present embodiment, has guiding axis inner hole A43, inside to save material and mitigate weight.
Refering to fig. 1 shown in 2, retainer mounting groove is offered on the bearing block A10 inner wall at each arc raceway A100
A101, retainer A9 are mounted in retainer mounting groove A101, can be prevented by retainer mounting groove A101 with locating retainer A9
Only double swerve when the stress of the middle part retainer A9.Each clearance hole A91 is bellmouth, and the path of bellmouth is less than ball A12
The major diameter of diameter, bellmouth is greater than ball A12 diameter.
Embodiment two
The difference between this embodiment and the first embodiment lies in the depth of arc raceway A100 is greater than ball refering to fig. 1 shown in 3
The radius of A12, and the diameter of clearance hole A91 is less than the diameter of ball A12, so that ball A12 is limited in arc raceway A100
It is interior.Clearance hole A91 is that circular hole is lower than the cone hole machine difficulty in embodiment one, while ball A12 is contacted with arc raceway A100
Face is big, and bearing capacity improves, and is suitable for the case where ball A12 is relatively large in diameter.
Refering to fig. 1 shown in 4, bearing block A10 is connect by connecting plate with side plate A11, the side plate at left and right sides of bearing block A10
A11 is equipped with multiple first mounting hole A102, is additionally provided with multiple second mounting holes on the side plate A11 of bearing block A10 upper and lower ends
A103.The height of connecting plate is increased compared with embodiment one and increases the second mounting hole A103, this is primarily to reduce
The bottom bearing block A10 connects turning torque suffered by bolt, while increasing the stability of radiator support.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
The change or replacement expected without creative work, should be covered by the protection scope of the present invention.Therefore, of the invention
Protection scope should be determined by the scope of protection defined in the claims.