Universal engine and generator

Abstract

The utility model discloses a general engine and a generator, which comprise an engine shell, a cooling fan is arranged on one side of the engine shell, the engine shell is connected with a wind scooper covering the outer side of the cooling fan, a mounting seat is arranged on the inner side of the wind scooper, and the mounting seat is connected with the cooling fan. The mounting base is detachably connected with the engine shell through a connecting piece, and the mounting base and the connecting piece are both located on the side, facing the engine shell, of the cooling fan. According to the scheme, the problem that in the prior art, when a general engine is designed to be small, the cooling effect is prone to being poor is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a general engine. BACKGROUND

[0002] The general engine is a kind of internal combustion engine with wide application.For example, general engine is used as power to drive the power generation unit of generator to generate electric energy in generator.The general engine includes engine housing mainly composed of crankcase and cylinder block, cooling fan is arranged on the side of engine housing and connected with crankshaft, and air guide cover is arranged outside cooling fan to cover cooling fan, cooling airflow generated by cooling fan is guided by air guide cover to cool engine housing, and air guide cover is connected with engine housing.

[0003] Chinese patent document CN211851996U discloses a silent generator set, which comprises a base and a shell, a working unit composed of an engine and a stator-rotor assembly is arranged in the shell, and an air guide cover body surrounds the stator-rotor assembly, an oil tank is arranged above the working unit, an inverter unit is arranged below the oil tank, characterized in that: shock-absorbing pads are arranged on both sides of the lower end surface of the working unit, and the shock-absorbing pads are inserted into the base; the shock-absorbing pads on the same side are two, the shock-absorbing pad at the front end of the working unit is connected with the lower part of the engine through a fixing screw, and the shock-absorbing pad at the rear end of the working unit is connected with the lower part of the engine through a bolt; a through hole is arranged on one side of the lower part of the air guide cover body, the fixing screw is transversely connected with the lower part of the engine through the through hole, and the shock-absorbing pad at the front end of the working unit is arranged on the fixing screw. The prior art solves the problems of engine operation vibration and operation noise.

[0004] With the increasing demand for miniaturization and light weight of general engine, the space around the engine housing is compressed as much as possible. In the prior art, the fixing screw needs to pass through the through hole on the air guide cover body transversely, which compresses the moving space of the cooling fan, reduces the diameter of the cooling fan, and causes the engine to have the problem of poor heat dissipation due to insufficient cooling airflow. Due to the requirement of miniaturization of the engine, the diameter of the cooling fan cannot be increased, so that the engine has the problem of difficult to balance cooling and miniaturization. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a general engine to solve the problem of poor cooling effect in the prior art when the general engine is designed to be miniaturized.

[0006] In order to achieve the above object, the utility model provides a general engine and generator, including engine casing, one side of engine casing is provided with cooling fan, the outer side of cooling fan is covered with the wind scooper of engine casing connection, the inboard of wind scooper is provided with mounting seat, the mounting seat is detachably connected with engine casing through connecting piece, the mounting seat and connecting piece all are located at the side of cooling fan towards engine casing.

[0007] The beneficial effects of the basic scheme are that: by using the scheme, when the wind scooper is connected with the engine casing through the mounting seat and the connecting piece, the mounting seat and the connecting piece do not occupy the space in the wind scooper located in the circumferential direction of the cooling fan, so that the diameter of the cooling fan can be increased while the wind scooper remains unchanged, thereby generating more cooling airflow for the cooling fan, improving the cooling effect of the engine, and solving the problem of poor cooling effect caused by the miniaturization design of the general engine.

[0008] Preferably, the connecting piece is a connecting bolt, the mounting seat is provided with a mounting through hole matched with the connecting bolt, and the axial direction of the mounting through hole is parallel to the axial direction of the cooling fan. By adopting such a structure, the assembly operation is facilitated.

[0009] Preferably, the wind scooper is provided with an assembly opening corresponding to the connecting bolt, and the wind scooper is detachably connected with a cover plate covering the assembly opening. By adopting such a structure, during assembly, the connecting bolt is operated through the assembly opening, and then the cover plate is covered on the assembly opening to seal the assembly opening, which is convenient for further improving the assembly convenience, and avoids the air leakage of the wind scooper at the assembly opening, thereby avoiding the adverse effect on the cooling effect.

[0010] Preferably, the edge of the assembly opening extends to the end of the connecting bolt. By adopting such a structure, when the connecting bolt is operated, the end of the connecting bolt can be exposed to the assembly opening as much as possible, thereby facilitating the operation of the connecting bolt, and without the need to set an operation space around the connecting bolt for the convenience of the operation of the connecting bolt, which is conducive to further reducing the volume of the wind scooper and facilitating the miniaturization design of the engine.

[0011] Preferably, the surface of the cover plate towards the inner side of the wind scooper smoothly transitions with the inner surface of the wind scooper. By adopting such a structure, after the cover plate covers the assembly opening, the surface of the cover plate towards the inner side of the wind scooper does not form a sudden change space at the assembly opening, thereby avoiding the turbulence of the airflow in the wind scooper, and further avoiding the adverse effect on the cooling effect.

[0012] Preferably, the outer side of the air deflector is provided with a damping seat connected with the mounting seat. With such an arrangement, the vibration of the engine is transmitted to the damping seat through the mounting seat, thereby reducing the transmission of the vibration of the engine to the outside while ensuring the reliability of the connection of the damping seat.

[0013] Preferably, the damping seat comprises a fixing lug for connecting with the mounting seat, and the fixing lug is detachably connected with the mounting seat through a fastener. With such an arrangement, the connection operation of the damping seat and the mounting seat is facilitated.

[0014] In the second aspect, the utility model provides a kind of generator, comprising any one of the above general engine.

[0015] The utility model has the following beneficial effects:

[0016] Compared with the prior art, the diameter of the cooling fan can be increased while the volume of the air deflector remains unchanged, thereby improving the cooling effect of the general engine and achieving the consideration of the miniaturization and cooling effect of the general engine. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of the utility model one kind general engine embodiment;

[0018] Figure 2 It is Figure 1 view direction in the among parallel to the axial view of cooling fan;

[0019] Figure 3 It is Figure 2 A-A sectional view in the among. DETAILED DESCRIPTION

[0020] The following is further described in detail by specific implementation manner:

[0021] The reference signs in the drawings of the specification include: air deflector 1, assembly opening 2, cooling fan 3, engine housing 4, connecting bolt 5, damping seat 6, cover plate 7, mounting seat 8.

[0022] Embodiment: a generator comprising a general engine. As shown in Figures 1 to 3As shown in the figure, a general engine comprises an engine housing 4, a cooling fan 3 arranged on one side of the engine housing 4, and a wind deflector 1 arranged outside the cooling fan 3. The wind deflector 1 is connected to the engine housing 4. The wind deflector 1 is provided with an air inlet at the middle of the end away from the engine housing 4. The inner side of the wind deflector 1 is provided with a mounting seat 8. The mounting seat 8 is detachably connected to the engine housing 4 through a connecting piece. The mounting seat 8 and the connecting piece are both arranged on the side of the cooling fan 3 facing the engine housing 4. In this embodiment, the mounting seat 8 is integrally formed with the wind deflector 1. Of course, in other embodiments, the mounting seat 8 and the wind deflector 1 can also be fixed by welding or other methods.

[0023] In this embodiment, the connecting piece is preferably a connecting bolt 5. The mounting seat 8 is provided with a mounting through hole matched with the connecting bolt 5, so that the mounting seat 8 is connected to the engine housing 4 through the connecting bolt 5. The detachable connection between the mounting seat 8 and the engine housing 4 is achieved through the connecting bolt 5, so that the assembly operation can be facilitated. In this embodiment, the axis of the mounting through hole is parallel to the axis of the cooling fan 3, so that the axis of the connecting bolt 5 is arranged parallel to the axis of the cooling fan 3, which is conducive to the assembly operation.

[0024] In this embodiment, the wind deflector 1 is provided with an assembly opening 2 corresponding to the connecting bolt 5. The connecting bolt 5 can be directly operated through the assembly opening 2, so that the assembly operation of the wind deflector 1 can be further simplified. The edge of the assembly opening 2 extends to the end of the connecting bolt 5. With such an arrangement, the end of the connecting bolt 5 can be exposed at the assembly opening 2 as much as possible during the assembly operation, so that the connecting bolt 5 can be conveniently operated. Moreover, there is no need to arrange an operation space around the connecting bolt 5 for the convenience of the operation of the connecting bolt 5, which is conducive to further reducing the volume of the wind deflector 1 and the miniaturization design of the engine.

[0025] In this embodiment, the wind deflector 1 is detachably connected to a cover plate 7 covering the assembly opening 2. The assembly opening 2 is sealed by the cover plate 7, so that the air leakage phenomenon at the assembly opening 2 of the wind deflector 1 can be avoided, and the cooling effect of the engine can be affected. Preferably, the surface of the cover plate 7 facing the inner side of the wind deflector 1 is smoothly transitioned with the inner surface of the wind deflector 1, so that after the assembly opening 2 is covered by the cover plate 7, the surface of the cover plate 7 facing the inner side of the wind deflector 1 will not form a sudden space at the assembly opening 2 to cause the airflow in the wind deflector 1 to be turbulent, thereby avoiding the adverse effect on the cooling effect.

[0026] In this embodiment, the outer side of the wind deflector 1 is provided with a damping seat 6 connected to the mounting seat 8. The damping seat 6 comprises a fixing lug for connecting to the mounting seat 8. The fixing lug is detachably connected to the mounting seat 8 through a fastener. The fastener is preferably a bolt.

[0027] By the scheme, when the air deflector 1 is connected with the engine housing 4 through the mounting seat 8 and the connecting piece, the mounting seat 8 and the connecting piece do not occupy the space in the air deflector 1 located in the circumferential direction of the cooling fan 3, so that the diameter of the cooling fan 3 can be increased while the air deflector 1 remains unchanged, and then the cooling fan 3 can generate more cooling airflow, and the cooling effect of the engine is improved, thereby solving the problem that the cooling and cooling effect is poor when the general engine is designed to be small.

[0028] The above is only the embodiment of the present application, and the well-known specific structure and characteristics in the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application.

Claims

1. A general-purpose engine, comprising an engine housing, a cooling fan disposed on one side of the engine housing, and an air guide shroud connected to the engine housing and covering the outside of the cooling fan, characterized in that: The inner side of the air guide shroud is provided with a mounting base, which is detachably connected to the engine housing via a connector. Both the mounting base and the connector are located on the side of the cooling fan facing the engine housing.

2. A general-purpose engine according to claim 1, characterized in that: The connector is a connecting bolt, and the mounting base is provided with a mounting through hole that mates with the connecting bolt. The axial direction of the mounting through hole is parallel to the axial direction of the cooling fan.

3. A general-purpose engine according to claim 2, characterized in that: The air guide cover is provided with an assembly port corresponding to the connecting bolt, and the air guide cover is detachably connected with a cover plate that covers the assembly port.

4. A general-purpose engine according to claim 3, characterized in that: The edge of the assembly opening extends to the end of the connecting bolt.

5. A general-purpose engine according to claim 4, characterized in that: The surface of the cover plate facing the inside of the air guide shroud smoothly transitions to the inner surface of the air guide shroud.

6. A general-purpose engine according to any one of claims 1 to 5, characterized in that: The outer side of the air guide shroud is provided with a shock-absorbing seat that is connected to the mounting base.

7. A general-purpose engine according to claim 6, characterized in that: The shock absorber includes a fixed lug for connection to a mounting base, the fixed lug being detachably connected to the mounting base via fasteners.

8. A generator, characterized in that: Includes the general-purpose engine as described in any one of claims 1-7.

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