CN203835519U - Cooling structure of small fuel engine - Google Patents

Abstract

A cooling structure of a small fuel engine comprises an engine body, a crankshaft is arranged in the engine body in a pivoted mode, and one end of the crankshaft is connected with a fan. After the small fuel engine is started, the crankshaft drives the fan to rotate so as to cool the engine body, and therefore the effect of cooling the engine body can be improved, and the small fuel engine can have higher operating efficiency; meanwhile, because the fan is directly connected with the crankshaft, the fan can be driven to rotate without additionally arranging power sources like batteries by users.

Description

The radiating structure of small fuel oil engine

Technical field

The utility model is relevant with a kind of radiating structure, refers to especially a kind of radiating structure that is applied to 15 milliliters of following small fuel oil engines of air displacement.

Background technique

The telecontrolled model of general fuel oil type, such as telecar, telecontrolled aircraft etc., its engine kind is to be mainly distinguished into another name for oil formula and the large class of gasoline type two according to fuel oil type, wherein, though another name for oil formula fuel oil engine have advantages of exert oneself larger, but that its fuel is not only obtained is difficult, price is higher, and under the identical condition of reservoir capacity, the another name for oil formula fuel oil exercisable time of engine is far shorter than gasoline type fuel oil engine, cause under running cost is considered, existing fuel oil type telecontrolled model changes employing gasoline type fuel oil engine as power resources more.

But the used heat that gasoline combustion produces is higher, make the gasoline type fuel oil engine of existing employing passive type air cooling, easily produce engine overheated and significantly reduce engine running efficiency, in view of this, be to have dealer to send out to find out in engine fan is set outward in addition, to help engine heat radiation, but this kind of mode still has following shortcoming:

The first need to arrange in addition the driving sources such as battery and drive this fan, is not only not easy to use, and need to notices at any time that whether the electric weight of battery is sufficient.

Its two be the rotating speed of this fan for fixing, cannot be with engine speed adjustment, to maintain the operating temperature of engine.

The utility model claimant, after observing above-mentioned shortcoming, thinks that existing small fuel oil engine has necessity of further improvement in fact, and then has generation of the present utility model.

Model utility content

The purpose of this utility model is to provide a kind of radiating structure of small fuel oil engine, can directly drive fan or pump to operate by bent axle, so that engine body is carried out to active air cooling or water-cooling.

For achieving the above object, the radiating structure of the small fuel oil engine that the utility model provides, it includes an engine body, and is pivoted with a bent axle in this engine body, and wherein, one end system of this bent axle is connected with a fan.

As preferred version, wherein, one end of this bent axle passes this engine body and forms a drive end, and this fan is connected with the another end of this bent axle.

As preferred version, wherein, the another end of this bent axle is connected with an extension rod, and this extension rod also passes and exposes to this engine this is external, and this fan is located at this engine this is external simultaneously, and is connected with this extension rod.

As preferred version, wherein, include a wind scooper, cover at outside this fan, and this wind scooper is provided with an intake grill and an exhaust outlet.

As preferred version, wherein, include a guide duct, be connected in this exhaust outlet.

As preferred version, wherein, between this bent axle and this fan, be provided with a starting mechanism.

As preferred version, wherein, this starting mechanism is a hand controller.

As preferred version, wherein, between this bent axle and this fan, be provided with a speed increaser.

The utility model also provides a kind of radiating structure of small fuel oil engine, and it includes an engine body, and is pivoted with a bent axle in this engine body, wherein, is provided with a heat radiation water channel in this engine body, includes a pump simultaneously, and it is connected with this bent axle; And a water tank, be located at contiguous this engine body place, and be filled with cooling fluid; And a plurality of connecting tubes, contact this heat radiation water channel, this pump and this water tank form a loop.

As preferred version, wherein, this pump has a flabellum, and this flabellum is connected in this bent axle, and this flabellum is covered with a housing outward simultaneously.

The radiating structure of the small fuel oil engine that the utility model provides, when after this small fuel oil engine start, this bent axle will drive this fan or this pump to rotate, so that this engine body is carried out to active air cooling heat radiation or water-cooling, thus, not only can promote the radiating effect to this engine body, make this small fuel oil engine there is higher running efficiency, and because this fan or this pump are to be directly connected in this bent axle, so user need not arrange the power sources such as battery in addition, can drive this fan or this pump to rotate, more allow this fan and this pump adjust radiating efficiency with engine speed simultaneously, to maintain the operating temperature of engine.

Brief description of the drawings

Fig. 1 is the stereogram of the first preferred embodiment of the present utility model.

Fig. 2 is the exploded view of the first preferred embodiment of the present utility model.

Fig. 3 is the sectional view of the first preferred embodiment of the present utility model.

Fig. 4 is the use schematic diagram of the first preferred embodiment of the present utility model.

Fig. 5 is the exploded view of the second preferred embodiment of the present utility model.

Fig. 6 is the stereogram of the 3rd preferred embodiment of the present utility model.

Fig. 7 is the stereogram of the 4th preferred embodiment of the present utility model.

Fig. 8 is the exploded view of the 4th preferred embodiment of the present utility model.

Symbol description in accompanying drawing:

10 engine bodies, 11 crankshaft room, 12 first openings, 13 second openings, 14 heat radiation water channels, 20 bent axles, 21 drive ends, 22 extension rods, 23 speed increasers, 30 fans, 40 wind scoopers, 41 intake grills, 42 exhaust outlets, 50 guide ducts, 60 hand controllers, 70 pumps, 71 flabellums, 72 housings, 80 water tanks, 90 connecting tubes.

Embodiment

Shown in Fig. 1, Fig. 2 and Fig. 3, be stereogram, exploded view and the sectional view of the first preferred embodiment of the present utility model, its announcement has a kind of radiating structure of small fuel oil engine, and the radiating structure of this small fuel oil engine includes:

One engine body 10, is provided with a crankshaft room 11 in it, simultaneously outer one first opening 12 and one second opening 13 that are connected with this crankshaft room 11 of being relatively equipped with of this engine body 10.

One bent axle 20, it is hubbed in this engine body 10, in the present embodiment, one end of this bent axle 10 is to be passed this engine body 10 and formed a drive end 21 by this first opening 12, the another end of this bent axle 20 is connected with an extension rod 22, and this extension rod 22 is also passed and exposed to outside this engine body 10 by this second opening 12.

One fan 30, it is connected in one end of this bent axle 20, and in the present embodiment, this fan 30 is connected in the another end of these bent axle 20 relative these drive ends 21, and in more detail, this fan 30 is to be located at outside this engine body 10, and is connected with this extension rod 22.

One wind scooper 40, covers at outside this fan 30, and this wind scooper 40 is provided with an intake grill 41 and an exhaust outlet 42.

One guide duct 50, is connected in this exhaust outlet 42.

Please consult again shown in Fig. 4 simultaneously, it is the use schematic diagram of the first preferred embodiment of the present utility model, when after this small fuel oil engine start, this bent axle 20 will drive this fan 30 to rotate, and the guiding with this guide duct 50 by this wind scooper 40, by extraneous air first by this this wind scooper 40 of intake grill 41 suction, discharged towards these engine body 10 directions along this guide duct 50 by this exhaust outlet 42 again, and then be able to this engine body 10 to carry out active air cooling heat radiation, thus, not only can promote the radiating effect to this engine body 10, make this small fuel oil engine there is higher running efficiency, and because this fan 30 is to be directly connected in this bent axle 20, so user need not arrange the power sources such as battery in addition, can drive this fan 30 to rotate, be convenient to assembling and the effect using thereby can reach.

It is worth mentioning that, running efficiency and the operating temperature of this small fuel oil engine are closely bound up, too high and too low operating temperature all can significantly reduce its running efficiency, therefore the utility model is by being directly connected in this fan 30 design of this bent axle 20, more allow this fan 30 adjust radiating efficiency with engine speed, while producing more used heat when this engine speed raising, these fan 30 rotating speeds also can promote, to strengthen radiating effect, and reduce and while producing less used heat when engine speed, these fan 30 rotating speeds also can reduce, to weaken radiating effect, thereby can maintain the operating temperature of engine, make this small fuel oil engine there is preferably running efficiency.

Be worth carrying, the design by this wind scooper 40 with this guide duct 50, can effectively be directed to extraneous air this engine body 10, to promote the radiating effect to this engine body 10 again.

Please consult again shown in Fig. 5 simultaneously, for the stereogram of the second preferred embodiment of the present utility model, the radiating structure of this small fuel oil engine and aforementioned the first preferred embodiment difference are, between this bent axle 20 and this fan 30, be provided with a speed increaser 23, can be for utilizing planetary gears to carry out speed change, to increase the rotating speed of these fan 30 relative these bent axles 20, further to improve the radiating effect of this fan 30, wherein, this speed increaser 23 is a known assemblies, therefore repeat no more its thin portion structure.

Please consult again shown in Fig. 6 simultaneously, for the stereogram of the 3rd preferred embodiment of the present utility model, the radiating structure of this small fuel oil engine and aforementioned the first preferred embodiment difference are, between this bent axle 20 and this fan 30, be provided with a starting mechanism 60, can supply in order to drive this bent axle 20 to rotate to start this small fuel oil engine, in the present embodiment, this starting mechanism 60 is a hand controller, this hand controller is a known assemblies, therefore repeat no more its thin portion structure.

Please consult again shown in Fig. 7 and Fig. 8 simultaneously, for stereogram and the exploded view of the 4th preferred embodiment of the present utility model, the radiating structure of this small fuel oil engine and aforementioned the first preferred embodiment difference are, in this engine body 10, be provided with a heat radiation water channel 14, also include a pump 70 simultaneously, it is connected with this bent axle 20, and in the present embodiment, this pump 70 has a flabellum 71, and this flabellum 71 is connected in this bent axle 20, the outer housing 72 that is also covered with of this flabellum 71 simultaneously, include in addition a water tank 80, be located at contiguous these engine body 10 places, and be filled with cooling fluid, also have a plurality of connecting tubes 90, this heat radiation water channel 14 of contacting, this pump 70 forms a loop with this water tank 80, thus, when after this small fuel oil engine start, this bent axle 20 will drive this pump 70, drive this cooling fluid to flow through this heat radiation water channel 14, so that this engine body 10 is carried out to water-cooling, thereby can reach the effect identical with aforementioned the first preferred embodiment.

Claims (10)

1. a radiating structure for small fuel oil engine, includes an engine body, and is pivoted with a bent axle in this engine body, it is characterized in that:

One end of this bent axle is connected with a fan;

After this small fuel oil engine start, this bent axle will drive this fan to rotate, so that this engine body is dispelled the heat.

2. according to the radiating structure of small fuel oil engine described in claim 1, it is characterized in that, one end of this bent axle passes this engine body and forms a drive end, and this fan is connected with the another end of this bent axle.

3. according to the radiating structure of small fuel oil engine described in claim 2, it is characterized in that, the another end of this bent axle is connected with an extension rod, and this extension rod also passes and exposes to this engine this is external, it is external that this fan is located at this engine basis simultaneously, and be connected with this extension rod.

4. according to the radiating structure of small fuel oil engine described in claim 3, it is characterized in that, include a wind scooper, cover at outside this fan, and this wind scooper is provided with an intake grill and an exhaust outlet.

5. according to the radiating structure of small fuel oil engine described in claim 4, it is characterized in that, include a guide duct, be connected in this exhaust outlet.

6. according to the radiating structure of small fuel oil engine described in claim 1, it is characterized in that, between this bent axle and this fan, be provided with a starting mechanism.

7. according to the radiating structure of small fuel oil engine described in claim 6, it is characterized in that, this starting mechanism is a hand controller.

8. according to the radiating structure of small fuel oil engine described in claim 1, it is characterized in that, between this bent axle and this fan, be provided with a speed increaser.

9. a radiating structure for small fuel oil engine, it includes an engine body, and is pivoted with a bent axle in this engine body, it is characterized in that:

In this engine body, be provided with a heat radiation water channel;

One pump, is connected with this bent axle;

One water tank, is located at contiguous this engine body place, and is filled with cooling fluid;

A plurality of connecting tubes, contact this heat radiation water channel, this pump and this water tank form a loop;

When after this small fuel oil engine start, this bent axle will drive this pump, drives this cooling fluid to flow through this heat radiation water channel, so that this engine body is dispelled the heat.

10. according to the radiating structure of small fuel oil engine described in claim 9, it is characterized in that, this pump has a flabellum, and this flabellum is connected in this bent axle, and this flabellum is covered with a housing outward simultaneously.