Concentric speed-increasing generator set

Abstract

The utility model provides a concentric speed-increasing generator set. The concentric speed-increasing generator set comprises a power body, a second output shaft, a speed-increasing assembly, a motor body and an impeller. The power body is provided with a first cavity, a second cavity and a first output shaft, and the axis of the second output shaft coincides with the axis of the first output shaft. The speed increasing assembly is in transmission connection with the first output shaft and the second output shaft and enables the rotating speed of the second output shaft to be higher than that of the first output shaft. The motor body and the impeller are both installed in the second cavity, and a rotor of the motor body and the impeller are connected with the second output shaft. The speed increasing assembly is designed to increase the speed of the power of the first output shaft and then transmit the power to the coaxial second output shaft, on the premise that the rotating speed of the first output shaft is not changed, the high-rotating-speed output of the second output shaft can drive the rotor of the motor body to rotate at a high rotating speed, and the power generation conversion efficiency is guaranteed; the motor body with a smaller size can be selected, thereby achieving the purpose of reducing the size of the motor body, and enabling the structure of the whole machine to be more compact.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of generator set, concretely relates to a concentric speed increasing generator set. BACKGROUND

[0002] The existing generator set, the generator rotor is usually directly installed on the power output shaft, and the rotation speed of the rotor and the power output shaft always keeps consistent. Due to the layout limitation of some generator sets, it is impossible to design the size of the whole machine too large, once the smaller size generator is adopted, due to the rotation speed of the rotor and the power output shaft always keeps consistent, it will inevitably affect the power generation requirement of the whole machine.

[0003] Therefore, how to make the whole machine structure more compact under the condition of adopting smaller size generator, and ensure the power generation conversion efficiency, is the problem to be solved by the person skilled in the art. UTILITY MODEL CONTENTS

[0004] In view of the defects in the prior art, the utility model aims at providing a concentric speed increasing generator set, which selects a smaller size motor body while ensuring the power generation conversion efficiency, so as to reduce the size of the motor body and make the whole machine structure more compact.

[0005] In order to realize the above-mentioned purpose, the utility model provides a concentric speed increasing generator set, which comprises a power main body, a first cavity, a second cavity and a first output shaft, the first cavity and the second cavity are both arranged on the rear side of the power main body, the second cavity is provided with an air inlet hole and an air outlet hole, and the first output shaft extends into the first cavity; a second output shaft extends into the first cavity and the second cavity respectively, and the axis of the second output shaft coincides with the axis of the first output shaft; a speed increasing assembly is arranged in the first cavity, the speed increasing assembly is transmissionally connected with the first output shaft and the second output shaft, and the rotation speed of the second output shaft is higher than that of the first output shaft; a motor body is arranged in the second cavity and connected with the second output shaft; and an impeller is arranged in the second cavity and connected with the second output shaft.

[0006] Preferably, the speed increasing assembly comprises a first gear, a second gear, a third gear and a fourth gear, the first gear is arranged on the first output shaft, the second gear and the third gear are both rotationally arranged in the first cavity, the second gear and the third gear can synchronously and same direction rotate, and the second gear is engaged with the first gear; the fourth gear is arranged on the second output shaft and engaged with the third gear, and the diameter of the first gear is larger than that of the second gear and the fourth gear.

[0007] Preferably, the speed increasing assembly further comprises a rotating shaft, the rotating shaft is rotatably arranged in the first cavity, and the second gear and the third gear are arranged on the rotating shaft.

[0008] Preferably, the second gear and the third gear are integrated.

[0009] Preferably, the air inlet hole is arranged close to the first cavity, and the impeller is arranged on the side of the motor body away from the first cavity.

[0010] Preferably, the second cavity comprises a first sub-cavity and a second sub-cavity in communication, the first sub-cavity is arranged between the first cavity and the second sub-cavity, and the second sub-cavity is in the shape of a volute; the motor body is arranged in the first sub-cavity, the impeller is arranged in the second sub-cavity, the air inlet hole is in communication with the first sub-cavity, and the air outlet hole is in communication with the second sub-cavity.

[0011] Preferably, the rear side of the power body is sequentially provided with a first shell and a second shell, the first shell is connected with the second shell, the first cavity is arranged in the first shell, and the second cavity is arranged in the second shell.

[0012] Preferably, the second shell is provided with two bottom feet.

[0013] Preferably, the utility model further comprises a silencer body, and the silencer body is arranged above the first shell and the second shell.

[0014] The utility model discloses a beneficial effect:

[0015] The utility model discloses a concentric speed increasing generator set, which passes through the design speed increasing assembly to transmit the power of first output shaft to the second output shaft of coaxial line after speed increasing, under the premise that the rotation speed of first output shaft is not changed, the high rotation speed output of second output shaft will drive the rotor of motor body high rotation speed rotation, can select the motor body of smaller size while guaranteeing the power generation conversion efficiency, thereby reach the purpose of reducing the size of motor body, make the whole machine structure more compact. Meanwhile, the impeller will also rotate synchronously with the rotor of motor body, and the impeller will suck the airflow outside into the second cavity through the air inlet hole, thereby realizing the cooling of motor body. And the cooled airflow is discharged through the air outlet hole, realizes the effective circulation of cooling airflow. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference signs. In the drawings, various elements or parts are not necessarily drawn according to the actual proportion.

[0017] Figure 1 The structural schematic view of the concentric speed-increasing generator set is provided for an embodiment of the utility model;

[0018] Figure 2 The structural schematic view of the first shell and the second shell;

[0019] Figure 3 The structural schematic view of the speed-increasing assembly cooperating with the first output shaft and the second output shaft;

[0020] Figure 4 The structural schematic view of the second shell;

[0021] Figure 5 The structural schematic view of the second sub-chamber;

[0022] Reference signs:

[0023] 10, power main body; 11, first output shaft; 12, first shell; 13, second shell; 131, air inlet hole; 132, air outlet hole; 133, second sub-chamber; 134, bottom foot; 20, second output shaft; 31, first gear; 32, second gear; 33, third gear; 34, fourth gear; 35, rotating shaft; 40, motor body; 50, impeller; 60, muffler body. DETAILED DESCRIPTION

[0024] The embodiments of the technical scheme of the utility model will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the utility model, therefore only as an example, and cannot limit the protection scope of the utility model.

[0025] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be the usual meaning understood by the technical personnel in the field to which the utility model belongs.

[0026] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0027] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood to indicate or imply relative importance or imply the number of the indicated technical features. In the description of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly specified and limited.

[0028] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0029] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or it can only mean that the horizontal height of the first feature is less than that of the second feature.

[0030] As shown in FIG. 1, Figures 1-5 As shown in FIG. 1,

[0031] The concentric speed-increasing generator set disclosed in the embodiment increases the power of the first output shaft 11 and transmits the power to the coaxial second output shaft 20 through the design of the speed-increasing assembly. Without changing the rotating speed of the first output shaft 11, the high rotating speed output of the second output shaft 20 drives the rotor of the motor body 40 to rotate at a high rotating speed. The motor body 40 with a smaller size can be selected to reduce the size of the motor body 40, so that the whole machine structure is more compact. At the same time, the impeller 50 also rotates synchronously with the rotor of the motor body 40. The impeller 50 sucks the air flow from the outside into the second cavity through the air inlet hole 131, so as to cool the motor body 40. The cooled air flow is discharged through the air outlet hole 132 to realize the effective circulation of the cooling air flow.

[0032] In one embodiment, the speed-increasing assembly includes a first gear 31, a second gear 32, a third gear 33 and a fourth gear 34. The first gear 31 is arranged on the first output shaft 11. The second gear 32 and the third gear 33 are rotatably arranged in the first cavity. The second gear 32 and the third gear 33 can synchronously and synchronously rotate. The second gear 32 is engaged with the first gear 31. The fourth gear 34 is arranged on the second output shaft 20 and engaged with the third gear 33. The diameter of the first gear 31 is greater than the diameters of the second gear 32 and the fourth gear 34. The diameter of the third gear 33 is also greater than the diameters of the second gear 32 and the fourth gear 34.

[0033] When the power body 10 is running, the power of the first output shaft 11 can be transmitted to the coaxial second output shaft 20 through the transmission of the first gear 31, the second gear 32, the third gear 33 and the fourth gear 34. At the same time, through the reasonable design of the outer diameters of the first gear 31, the second gear 32, the third gear 33 and the fourth gear 34, the speed-increasing purpose of the fourth gear 34 and the second output shaft 20 can be realized. In this way, without changing the rotating speed of the first output shaft 11, the high rotating speed output of the second output shaft 20 can also be realized, and the purpose of reducing the size of the motor body 40 is achieved.

[0034] Further, the speed-increasing assembly further includes a rotating shaft 35 rotatably arranged in the first cavity. The second gear 32 and the third gear 33 are arranged on the rotating shaft 35, so that they can synchronously and synchronously rotate.

[0035] Further, the second gear 32 and the third gear 33 are an integral structure.

[0036] In one embodiment, the air inlet hole 131 is close to the first cavity, and the impeller 50 is arranged on the side of the motor body 40 away from the first cavity. When the impeller 50 works, a negative pressure is generated in the second cavity, so that the external airflow is sucked into the second cavity through the air inlet hole 131, and the motor body 40 is cooled. The cooled airflow is discharged out of the second cavity through the air outlet hole 132, realizing effective circulation of the cooling airflow.

[0037] In one embodiment, the second cavity includes a first sub-cavity and a second sub-cavity 133 in communication, the first sub-cavity is arranged between the first cavity and the second sub-cavity 133, and the second sub-cavity 133 is in the shape of a volute. The motor body 40 is arranged in the first sub-cavity, the impeller 50 is arranged in the second sub-cavity 133, the air inlet hole 131 is in communication with the first sub-cavity, and the air outlet hole 132 is in communication with the second sub-cavity 133. By designing the second sub-cavity 133 in the shape of a volute, when the impeller 50 operates in the second sub-cavity 133, the disturbance of the airflow and the noise can be reduced, and the airflow is prevented from deviating during flowing to the air outlet hole 132, thereby improving the air exhaust effect and accordingly improving the air intake effect.

[0038] In one embodiment, the rear side of the power body 10 is sequentially provided with a first shell 12 and a second shell 13, the first shell 12 is connected with the second shell 13, the first cavity is arranged in the first shell 12, and the second cavity is arranged in the second shell 13.

[0039] In one embodiment, the second shell 13 is provided with two bottom feet 134, and the bottom feet 134 can provide better support for the second shell 13 during assembly of the whole machine.

[0040] In one embodiment, the concentric speed-increasing generator set further includes a muffler body 60 arranged above the first shell 12 and the second shell 13. By optimizing the arrangement positions of the first shell 12, the second shell 13 and the muffler body 60, the structure of the whole machine can be more compact.

[0041] In the specification of the utility model, a large number of specific details are explained. However, it can be understood that the embodiments of the utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail, so as not to obscure the understanding of the specification.

[0042] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. A concentric uprated generator set, characterised in that, The application relates to a power body (10) provided with a first cavity, a second cavity and a first output shaft (11), the first cavity and the second cavity are arranged on the rear side of the power body (10), the second cavity is provided with an air inlet hole (131) and an air outlet hole (132), and the first output shaft (11) extends into the first cavity. A second output shaft (20) extends into the first cavity and the second cavity respectively, and the axis of the second output shaft (20) is coincident with the axis of the first output shaft (11). A speed increasing assembly is arranged in the first cavity, the speed increasing assembly is in transmission connection with the first output shaft (11) and the second output shaft (20), and the rotating speed of the second output shaft (20) is higher than that of the first output shaft (11). A motor body (40) is arranged in the second cavity and connected with the second output shaft (20). A vane (50) is arranged in the second cavity and connected with the second output shaft (20). The speed increasing assembly comprises a first gear (31), a second gear (32), a third gear (33) and a fourth gear (34), the first gear (31) is arranged on the first output shaft (11), the second gear (32) and the third gear (33) are rotatably arranged in the first cavity, the second gear (32) and the third gear (33) can synchronously and uniformly rotate, and the second gear (32) is in mesh with the first gear (31).

2. The concentric over-speed power generator set of claim 1, wherein, The fourth gear (34) is arranged on the second output shaft (20) and in mesh with the third gear (33), and the diameter of the first gear (31) is larger than that of the second gear (32) and the fourth gear (34). The speed increasing assembly further comprises a rotating shaft (35), the rotating shaft (35) is rotatably arranged in the first cavity, and the second gear (32) and the third gear (33) are arranged on the rotating shaft (35).

3. The concentric over-speed power generator set of claim 2, wherein, The second gear (32) and the third gear (33) are in an integrated structure.

4. A concentric up-torgening generator set according to claim 2 or 3, characterized in that The air inlet hole (131) is close to the first cavity, and the vane (50) is arranged on the side of the motor body (40) away from the first cavity.

5. A concentric over-speed power generator set according to claim 1 or 2, characterised in that, The second cavity comprises a first sub-cavity and a second sub-cavity (133) in communication, the first sub-cavity is arranged between the first cavity and the second sub-cavity (133), and the second sub-cavity (133) is in a volute shape.

6. The concentric over geared electric generator set of claim 5, wherein, The motor body (40) is arranged in the first sub-cavity, the vane (50) is arranged in the second sub-cavity (133), the air inlet hole (131) is in communication with the first sub-cavity, and the air outlet hole (132) is in communication with the second sub-cavity (133). The rear side of the power body (10) is sequentially provided with a first shell (12) and a second shell (13), the first shell (12) is connected with the second shell (13), the first cavity is arranged in the first shell (12), and the second cavity is arranged in the second shell (13).

7. The concentric over-geared generator set of claim 1, wherein, The second shell (13) is provided with two bottom feet (134).

8. The concentric over geared generator set of claim 7, wherein, ​ 9. The concentric over geared generator set of claim 7, wherein, A muffler body (60) is further included, which is provided above the first housing (12) and the second housing (13).

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