Eccentric speed-increasing generator set

Abstract

The utility model provides an eccentric speed-increasing generator set. The eccentric speed-increasing generator set comprises a power body, a first shell, a second output shaft, a speed-increasing assembly, a motor body and an impeller. The power body is provided with a first cavity and a first output shaft. The second cavity is provided with a first air inlet hole and an exhaust hole. The second output shaft is rotationally arranged on the power body, and the axis of the second output shaft does not coincide 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 arranged in the second cavity, and a rotor of the motor body and the impeller are connected with the 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 motor body with a smaller size can be selected while the power generation conversion efficiency is ensured, so that the purpose of reducing the size of the motor body is achieved, and the whole machine structure is more compact.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of generator set, concretely relates to an eccentric 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 an eccentric 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 achieve the above-mentioned purpose, the utility model provides an eccentric speed increasing generator set, which comprises a power main body, a first cavity and a first output shaft, the first cavity is arranged on the rear side of the power main body, and the first output shaft extends into the first cavity; a first shell is arranged on the rear side of the power main body, the first shell has a second cavity in it, the second cavity is provided with a first air inlet and an air outlet; a second output shaft is rotatably arranged on the power main body, the second output shaft extends into the first cavity and the second cavity respectively, and the axis of the second output shaft does not coincide 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 and a second gear in engagement, the first gear is arranged on the first output shaft, the second gear is arranged on the second output shaft, and the diameter of the second gear is smaller than that of the first gear.

[0007] Preferably, the first air inlet is close to the power main body, and the impeller is arranged on the side of the motor body away from the first air inlet.

[0008] 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, 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 first air inlet hole is in communication with the first sub-cavity, and the air outlet hole is in communication with the second sub-cavity.

[0009] Preferably, the outer wall of the first shell is provided with a second air inlet hole in communication with the first sub-cavity.

[0010] Preferably, the first shell is connected with the power body.

[0011] Preferably, the first shell is provided with two bottom feet.

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

[0013] The utility model discloses a beneficial effect:

[0014] The utility model discloses a eccentric speed increasing generator unit, it passes through the design speed increasing assembly to the power of first output shaft is passed to the second output shaft of different axis with speed increasing after transmission, under the premise that the speed of first output shaft is not changed, the high speed output of second output shaft will drive the rotor high speed rotation of motor body, can select the motor body of smaller size while guaranteeing power generation conversion efficiency, thereby reach the purpose of reducing motor body size, make the whole machine structure more compact.

[0015] Meanwhile, the impeller also will follow the rotor synchronous rotation of motor body, and the impeller will inhale the airflow of outside to the second cavity through the first air inlet hole, thereby realizes the cooling of motor body. And the airflow after cooling will be discharged through the air outlet hole, realizes the effective circulation of cooling airflow. And, because the axis of first output shaft and the axis of second output shaft do not coincide, according to different use demand, can make the overall structure arrangement of this eccentric speed increasing generator unit more diversification. BRIEF DESCRIPTION OF DRAWINGS

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

[0017] Figure 1 The structure schematic diagram of eccentric speed increasing generator unit provided by an embodiment of the utility model is shown in the figure.

[0018] Figure 2 is a structural schematic view of the speed increasing assembly;

[0019] Figure 3 is a structural schematic view of the first shell near the power body side;

[0020] Figure 4 is a structural schematic view of the second output shaft cooperating with the motor body and the impeller respectively;

[0021] Figure 5 is a sectional view of the first shell;

[0022] Figure 6 is a structural schematic view of the second sub-chamber;

[0023] Reference signs:

[0024] 10, power body; 11, first output shaft; 20, first shell; 21, second cavity; 211, first sub-chamber; 212, second sub-chamber; 22, first air inlet hole; 23, air outlet hole; 24, second air inlet hole; 25, bottom foot; 30, second output shaft; 41, first gear; 42, second gear; 50, motor body; 60, impeller; 70, second shell; 80, muffler body. DETAILED DESCRIPTION

[0025] 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, and therefore only serve as examples, and cannot limit the protection scope of the utility model.

[0026] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the usual meaning understood by the technical personnel in the field to which the utility model belongs.

[0027] 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 are based on the orientation or positional relationship shown in the drawings, and are 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.

[0028] In addition, the terms "first", "second" and the like are used only for descriptive purposes, and cannot be construed as indicating or implying relative importance or an indicated number of technical features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0029] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0030] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate 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 directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0031] As shown in Figures 1-6 In an embodiment of the present application, an eccentric speed increasing generator set is provided, which comprises a power body 10, a first shell 20, a second output shaft 30, a speed increasing assembly, a motor body 50 and an impeller 60. The power body 10 has a first cavity and a first output shaft 11 (i.e. a crankshaft), the first cavity is arranged at the rear side of the power body 10, and the first output shaft 11 extends into the first cavity. The first shell 20 is arranged at the rear side of the power body 10, and the first shell 20 has a second cavity 21 therein, the second cavity 21 is provided with a first air inlet hole 22 and an air outlet hole 23. The second output shaft 30 is rotatably arranged on the power body 10, the second output shaft 30 extends into the first cavity and the second cavity 21 respectively, and the axis of the second output shaft 30 does not coincide with the axis of the first output shaft 11. The speed increasing assembly is arranged in the first cavity, the speed increasing assembly is drivingly connected with the first output shaft 11 and the second output shaft 30, and the rotating speed of the second output shaft 30 is higher than that of the first output shaft 11. The motor body 50 and the impeller 60 are both arranged in the second cavity 21, and the rotor of the motor body 50 and the impeller 60 are connected with the second output shaft 30 respectively.

[0032] The eccentric speed-increasing generator set disclosed in the embodiment increases the power of the first output shaft 11 and transmits the power to the second output shaft 30 with different axis lines 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 30 drives the rotor of the motor body 50 to rotate at a high rotating speed. The size of the motor body 50 can be selected to be smaller, so that the size of the motor body 50 is reduced, and the structure of the whole machine is more compact.

[0033] Meanwhile, the impeller 60 also rotates synchronously with the rotor of the motor body 50. The impeller 60 absorbs the air flow outside through the first air inlet hole 22 into the second cavity 21, so as to cool the motor body 50. The cooled air flow is discharged through the air outlet hole 23, so as to realize the effective circulation of the cooling air flow. Since the axis line of the first output shaft 11 is not coincident with the axis line of the second output shaft 30, the overall structure arrangement of the eccentric speed-increasing generator set can be diversified according to different use requirements.

[0034] In an embodiment, the speed-increasing assembly includes the first gear 41 and the second gear 42 engaged with each other. The first gear 41 is arranged on the first output shaft 11, and the second gear 42 is arranged on the second output shaft 30. The diameter of the second gear 42 is smaller than the diameter of the first gear 41.

[0035] When the power body 10 operates, the power of the first output shaft 11 can be transmitted to the second output shaft 30 with different axis lines through the transmission of the first gear 41 and the second gear 42. Meanwhile, through the reasonable design of the outer diameters of the first gear 41 and the second gear 42, the speed-increasing purpose of the second output shaft 30 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 30 can also be realized, and the size of the motor body 50 is reduced.

[0036] In an embodiment, the first air inlet hole 22 is close to the power body 10, and the impeller 60 is arranged on the side of the motor body 50 away from the first air inlet hole 22. When the impeller 60 works, the negative pressure is generated in the second cavity 21, so as to absorb the air flow outside through the first air inlet hole 22 into the second cavity 21, and cool the motor body 50. The cooled air flow is discharged out of the second cavity 21 through the air outlet hole 23, so as to realize the effective circulation of the cooling air flow. Since the first air inlet hole 22 is close to the power body 10, the air flow absorbed into the second cavity 21 also carries away part of the heat of the power body 10, so as to improve the cooling effect of the power body 10.

[0037] In one embodiment, the second cavity 21 comprises a first sub-chamber 211 and a second sub-chamber 212 in communication, the first sub-chamber 211 is arranged between the first cavity and the second sub-chamber 212, and the second sub-chamber 212 is in the shape of a volute. The motor body 50 is arranged in the first sub-chamber 211, the impeller 60 is arranged in the second sub-chamber 212, the first air inlet 22 is in communication with the first sub-chamber 211, and the air outlet 23 is in communication with the second sub-chamber 212.

[0038] By designing the second sub-chamber 212 in the shape of a volute, when the impeller 60 operates in the second sub-chamber 212, the disturbance of the airflow and the noise can be reduced, and the airflow will not deviate during flowing to the air outlet 23, thereby improving the air exhaust effect, and accordingly improving the air intake effect.

[0039] In one embodiment, in order to further improve the air intake effect, the outer wall of the first shell 20 is provided with a second air inlet 24, and the second air inlet 24 is in communication with the first sub-chamber 211.

[0040] In one embodiment, the eccentric speed-increasing generator set further comprises a second shell 70 and a muffler body 80, the second shell 70 is arranged on the power body 10 and above the first shell 20, and the muffler body 80 is arranged in the second shell 70. By optimizing the arrangement positions of the first shell 20, the second shell 70 and the muffler body 80, the structure of the whole machine can be more compact.

[0041] In one embodiment, in order to improve the stability of the first shell 20, the first shell 20 is connected to the power body 10 by bolts.

[0042] In one embodiment, the first shell 20 is provided with two bottom feet 25, and the design of the bottom feet 25 can provide better support for the first shell 20 during assembly of the whole machine.

[0043] 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 in order not to obscure the understanding of the specification.

[0044] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model 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 utility model, and they should be covered in the scope of the claims and the specification of the utility model.

Claims

1. An eccentric overrunning generator set, comprising: The utility model relates to a power unit (10) with a first cavity and a first output shaft (11), the first cavity is arranged at the back side of the power unit (10), and the first output shaft (11) extends into the first cavity. A first housing (20) is arranged at the back side of the power unit (10), and the first housing (20) has a second cavity (21) therein, the second cavity (21) is provided with a first air inlet (22) and an air outlet (23). A second output shaft (30) is rotatably arranged on the power unit (10), the second output shaft (30) extends into the first cavity and the second cavity (21) respectively, and the axis of the second output shaft (30) is not 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 drivingly connected with the first output shaft (11) and the second output shaft (30), and the rotating speed of the second output shaft (30) is higher than that of the first output shaft (11). A motor body (50) is arranged in the second cavity (21) and connected with the second output shaft (30). A vane wheel (60) is arranged in the second cavity (21) and connected with the second output shaft (30). The speed increasing assembly comprises a first gear (41) and a second gear (42) in engagement, the first gear (41) is arranged on the first output shaft (11), the second gear (42) is arranged on the second output shaft (30), and the diameter of the second gear (42) is smaller than that of the first gear (41).

2. The overhung geared expander set of claim 1, wherein, The first air inlet (22) is close to the power unit (10), and the vane wheel (60) is arranged on the side of the motor body (50) away from the first air inlet (22).

3. The eccentric overdrive generator set of claim 1, wherein, The second cavity (21) comprises a first sub-cavity (211) and a second sub-cavity (212) in communication, the first sub-cavity (211) is arranged between the first cavity and the second sub-cavity (212), and the second sub-cavity (212) is in the shape of a volute.

4. The eccentric overrunning generator set of claim 3, wherein, The motor body (50) is arranged in the first sub-cavity (211), the vane wheel (60) is arranged in the second sub-cavity (212), the first air inlet (22) is in communication with the first sub-cavity (211), and the air outlet (23) is in communication with the second sub-cavity (212). The outer wall of the first housing (20) is provided with a second air inlet (24), and the second air inlet (24) is in communication with the first sub-cavity (211).

5. The eccentric overdrive generator set of claim 4, wherein, A second housing (70) and a muffler body (80) are further included, the second housing (70) is arranged on the power unit (10) and above the first housing (20), and the muffler body (80) is arranged in the second housing (70).

6. The eccentric overdrive generator set of claim 1, wherein, The first housing (20) is connected with the power unit (10).

7. The eccentric overdrive generator set of claim 1, wherein, The first housing (20) is provided with two bottom feet (25).

8. The eccentric overdrive generator set of claim 1, wherein, ​

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