JP3007569U - Rotary engine with fan - Google Patents

Abstract

(57) [Summary] [Objective] The objective is to improve the air-cooled rotary engine, which tends to overheat easily, and to provide a fan-equipped rotary engine with a structure that exhibits a strong cooling capacity. [Composition] On the side housing of the rotary engine,
An air passage part for guiding cooling air by a baffle plate is provided, and a lubricating oil discharge part and a cooling hydraulic pressure input part are provided before and after in the output shaft direction of the rotary engine, both of which are connected to a cooling radiator and a pump. , A configuration in which a cooling oil circulation path is formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotary engine with a fan, and more specifically, to a rotary engine with a fan suitable for use in a model airplane or an engine generator.

[0002]

[Prior art]

 Conventional rotary engines are known to have an air cooling axial flow cooling mechanism and an air cooling peripheral flow cooling mechanism. Further, in the type that lubricates the inside of the rotary engine by mixing the lubricating oil with the air-fuel mixture, the lubricating oil that has finished lubrication was discharged to the atmosphere.

[0003]

[Problems to be solved by the device]

 However, in the conventional rotary engine described above, the one having a sufficient cooling capacity has a drawback that the structure is complicated and the weight and the bulk are apt to increase, and the one having a simple cooling structure has a drawback that it easily overheats. . It is an object of the present invention to solve the above-mentioned drawbacks of the prior art and to provide a rotary engine with a fan having a high cooling capacity even though the cooling structure is simple.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned drawbacks of the conventional rotary engine, the inventor first provided a cooling air ventilation passage in the side housing of the rotary engine, and guided the cooling air from the fan by the air guide plate. The problem was solved by adopting a structure that can be sent to the road.

The inventor of the present invention also provides a lubricating oil discharge part and a cooling hydraulic pressure input part in the front and rear of the output shaft direction of the rotary engine, and connects both of them with a cooling radiator and a pump to circulate the lubricating oil as cooling oil. The problem was solved by adopting a flexible structure.

Further, the problem has been solved by combining the above two structures.

[0007]

[Action]

 By taking the solving means as described above, in the rotary engine with a fan of the present invention, the cooling air from the fan is guided by the air guide plate and enters the ventilation passage portion, and the side housing of the rotary engine is strongly cooled.

In the case of a cooling oil circulation function, the lubricating oil mixes with the mixture and enters the rotary engine, flows into the interior from the combustion chamber, and lubricates each part to a high temperature, and from the lubricating oil discharge part to the cooling radiator. Is cooled by being pumped to the inside of the rotary engine from the cooling oil pressure inlet, and the inside is efficiently cooled.

[0009]

【Example】

 (Embodiment 1) Next, an embodiment of a rotary engine with a fan according to the present invention will be described in detail with reference to FIG. FIG. 1 shows a rotary engine with a fan for a model airplane, in which a first rotary engine 1 and a second rotary engine 2 are connected to each other and mounted on a model airplane body 10 by an engine mount 3. The first rotary engine 1 is constructed by sandwiching a rotor housing 13 between side housings 11 and 12, and the second rotary engine 2 is constructed by sandwiching a rotor housing 23 between side housings 21 and 22. The air guide plate 4 and the air passage part 5 are provided between the side housing 12 and the side housing 21, and the air guide plate 6 and the air passage part 7 are provided between the side housing 22 and the engine mount 3. Has been.

An output shaft 30 is provided so as to connect the first rotary engine 1, the second rotary engine 2, and the engine mount 3 to each other, and a fan 35 is provided at the tip of the output shaft 30. Further, a lubricating oil discharge portion 8 and a cooling hydraulic pressure inlet portion 9 are respectively provided in a portion following the side housing 11 and the ventilation passage portion 7, both of which are connected to the cooling radiator 70 and the pump 40 so that the lubricating oil is It has a structure that allows it to circulate. An oil tank 50 is provided in the middle of the circulation passage, and a surplus oil discharge portion 60 is also provided.

In the rotary engine with a fan for a model airplane according to the above-described embodiment, the cooling air created by the fan 35 also serving as a propeller for propulsion is blown by the baffle plate 4 and the baffle plate 6, respectively. It is sent to the part 7 and cools the side housing 12, the side housing 21, and the side housing 22, respectively. Therefore, the first rotary engine 1 and the second rotary engine 2 are sufficiently air-cooled and radiated even in the side housing portion where it is difficult to radiate heat in the conventional rotary engine, so there is no risk of overheating.

Further, in the above-described embodiment, the lubricating oil mixed fuel is used for operation, and the high temperature lubricating oil that has finished lubrication directly flows out from the lubricating oil discharge portion 8 and accumulates in the oil tank 50 to cool the radiator. After passing through 70 to be cooled, it becomes cooling oil, is pumped by the pump 40, and circulates by returning from the cooling oil pressure inlet 9 into the engine. When the amount of oil becomes excessive, it is discharged from the surplus oil discharge part 60 to the outside.

(Second Embodiment) A second embodiment shows an example in which this engine is used as a general purpose and incorporated in a forced air cooling type engine generator, which will be described in detail with reference to FIG.

An output shaft 30 is provided in communication with the first low-crease engine 1, the second rotary engine 2, and the engine mount 3, a fan 35 is provided at a front end thereof, and a pulley 37 is provided at a rear end thereof. The pulley 39 is rotated via the belt 38. The pulley 39 is adapted to drive the generator 80.

The first rotary engine 1 comprises a side housing 11, a rotor housing 13 and a side housing 12, and the second rotary engine 2 comprises a side housing 21, a rotor housing 23 and a side housing 22. Similar to the above embodiment, the air guide plate 4 and the air passage portion 5 are provided between the side housing 12 and the side housing 21, and the air guide plate 6 and the air passage portion are provided between the side housing 22 and the engine mount 3. 7 is provided.

Although the baffle plate 4 and the baffle plate 6 are provided in the side housing 21 and the engine mount 3 in the above-described embodiment, the baffle plate 4 and the baffle plate 6 are provided in the engine housing 3 in FIG. It is provided on the frame 20 that is held on the und. However, the action of the cooling air from the fan 35 being sent to the ventilation passage section by the air guide plate is exactly the same as in the case of the above embodiment.

As shown in FIG. 2, a lubricating oil discharge portion 8 communicating with a portion following the side housing 11 and a cooling hydraulic pressure inlet portion 9 communicating with the ventilation passage portion 7 are provided in front of and behind the output shafts of the plurality of rotary engines. Is provided, and both are connected to the cooling radiator 70, the pump 40, and the oil tank 50 to form a circulation path, which is the same as the above-described embodiment.

In the engine generator of FIG. 2, a starting device 36 is provided at the front end of the output shaft 30. The starting device 36 starts the engine and drives the generator 80.

In the first embodiment and the second embodiment, both the direct cooling structure by the baffle plate and the air passage part and the indirect cooling structure by the cooling radiator and the cooling oil circulation using the pump are provided. However, the effect of preventing overheat can be exhibited even with a cooling structure of only one of these.

It is effective to provide the air guide plate shown in the embodiment in the vicinity of the spark plug of the rotary engine in order to prevent the temperature rise, but it may be provided at other positions, or a plurality of air guide plates may be provided. Good. Also, it is effective to make the ventilation passage part thinner so that the cooling air can easily pass through it, but it is not always necessary to form it on the round shaft, and it may partially project beyond the outer diameter of the rotary engine. It is a thing.

[0021]

[Effect of device]

 Since the rotary engine with a fan of the present invention is configured as described above, the following effects are achieved.

In the rotary engine with a fan according to the present invention, since it has the structure as described in claim 1, the cooling air from the fan is sent to the ventilation passage portion by the air guide plate, and the cooling effect is extremely large. The occurrence of high temperature damage can be prevented.

In the rotary engine with a fan according to the present invention, since it has the structure as described in claim 2, the cooling oil is supplied to the inside of the rotary engine by the lubricating oil discharge part, the cooling radiator, and the pump and the cooling hydraulic pressure input part. It can circulate and lower the temperature from inside the rotary engine, preventing high temperature failures.

In the rotary engine with a fan according to the present invention, since it has the structure as described in claim 3, the cooling effect can be obtained by the air guide plate and the ventilation passage from the outside, and the cooling radiator and the pump can be used from the inside. Since the circulation cooling effect can be obtained, the synergistic effect provides a rotary engine having a significantly high cooling effect.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a rotary engine with a fan according to the present invention.

FIG. 2 is an explanatory view showing another embodiment of the rotary engine with a fan according to the present invention.

[Explanation of symbols]

 1. First rotary engine 2. Second rotary engine 11,12. Side housing 21,22. Side housing 13, 23. Rotor housing 3. Engine mount 4,6. Baffle plate 5,7. Ventilation section 8. Lubricating oil discharge part 9. Cooling hydraulic inlet

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] August 22, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 3

[Correction method] Change

[Correction content]

Claims (3)

[Scope of utility model registration request] 1. A fan having a structure in which a side wall of a rotary engine is provided with a ventilation passage for cooling air, and cooling air from a fan can be sent to the ventilation passage by a baffle plate. Rotary engine. 2. A lubricating oil discharge part and a cooling hydraulic pressure input part are provided at the front and rear of the output shaft direction of the rotary engine, both of which are connected to a cooling radiator and a pump to mix with the mixture and enter the rotary engine to lubricate each part. A rotary engine with a fan, which has a structure in which the lubricating oil discharged and cooled is cooled and returned to the inside of the rotary engine so that the lubricating oil can circulate as cooling oil. 3. A rotary engine with a fan having the features of both claim 1 and claim 2.