CN202721587U

CN202721587U - Brushless direct current generator

Info

Publication number: CN202721587U
Application number: CN2012203792969U
Authority: CN
Inventors: 彭宇林; 张光荣; 梅昆
Original assignee: ZHEJIANG SINGFU MACHINERY ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: Zhejiang Happy Aerospace Science And Technology Co ltd
Priority date: 2012-07-31
Filing date: 2012-07-31
Publication date: 2013-02-06
Anticipated expiration: 2022-07-31

Abstract

The utility model relates to the power field, more particularly to a brushless direct current generator comprising a stator, a rotor, a plurality of rectifiers and a generator casing. Besides, the plurality of rectifiers are arranged on the inner wall of the generator casing. According to the utility model, the provided brushless direct current generator has advantages of compact structure, light weight, high protection level, good heat dissipation property and high work reliability.

Description

Brushless DC generator

Technical field

The utility model relates to power domain, is specifically related to a kind of brushless DC generator.

Background technology

DC generator is pressed the difference of excitation mode, and can be divided into has brush DC generator and brushless DC generator.Have in the brush DC generator to be provided with brushgear, need periodic maintenance to change.Brushless DC generator does not then need to arrange brushgear, and maintenance is little, and reliability is high.

In the prior art, brushless DC generator often is comprised of support, stator, rotor, end cap, bearing, rectifying device etc.Rectifying device generally comprises a plurality of rectifiers, and a plurality of rectifier be arranged on one control cavity in, this control cavity is arranged on the outside of generator casing.

But, in above-mentioned brushless DC generator, because a plurality of rectifiers are arranged on the outside of generator casing, so that the structure of existing brushless DC generator is disperseed.

The utility model content

The utility model provides a kind of brushless DC generator, compact conformation.

The utility model provides a kind of brushless DC generator, comprising:

Stator, rotor, a plurality of rectifier, generator casing;

Wherein, described a plurality of rectifier is arranged on the inwall of described generator casing.

By the brushless DC generator that the utility model provides, can provide a kind of generator of compact conformation.In brushless DC generator of the present utility model, a plurality of rectifiers are built in the inside of brushless DC generator, a plurality of rectifiers are arranged on the inwall of generator casing, changed the structure that a plurality of rectifiers in the prior art are arranged on the outside of generator casing, so that generator is simple in structure, and more compact structure.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in below describing only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawing illustrated embodiments other embodiment and accompanying drawing thereof.

Fig. 1 is the internal structure schematic diagram of a kind of embodiment of brushless DC generator of the present utility model;

Fig. 2 is the external structure schematic diagram of a kind of embodiment of brushless DC generator of the present utility model;

Fig. 3 is the structural representation that a plurality of rectifiers of brushless DC generator of the present utility model are installed in a kind of embodiment on the generator casing inwall;

Wherein, 1 is the output axle key, and 2 is front end housing, and 3 is stator, and 4 is the first built-in fans, and 5 is rotor, and 6 is the second built-in fans, and 7 is rectifier, and 8 is rear end cap, and 9 is sidewall, and 10 is external fan, and 11 is fan housing, and 12 is fin, and 13 is the electric power output cassette.

Embodiment

Below with reference to accompanying drawing the technical scheme of each embodiment of the utility model is carried out clear, complete description, obviously, described embodiment only is a part of embodiment of the present utility model, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are resulting all other embodiment under the prerequisite of not making creative work, all belong to the scope that the utility model is protected.

The utility model provides a kind of brushless DC generator, comprising:

Stator, rotor, a plurality of rectifier, generator casing;

In the prior art, a plurality of rectifiers of brushless DC generator are arranged on the outside of generator casing, often are integrated in one independently in the casing, are separated with generator.And because the number of rectifier is more, for example be 12, structure is comparatively loose.And in an embodiment of the present utility model, the stator 3 of brushless DC generator, rotor 5 and a plurality of rectifier 7 all are arranged on the inside of generator casing, preferably, are arranged on the inwall of generator casing compact conformation.

In an embodiment of the present utility model as shown in Figure 3, a plurality of rectifiers 7 are arranged on the inwall of engine housing, and preferably when engine housing when being cylindric, a plurality of rectifiers 7 are arranged on the inwall of sidewall 9.

In each embodiment of the present utility model, preferably, described generator casing comprises sidewall and a pair of end cap.

In each embodiment of the present utility model, preferably, described generator casing is the closed shell;

And/or,

Described a plurality of rectifier is arranged on the inwall of described sidewall.

In each embodiment of the present utility model, preferably, described sidewall is aluminium alloy plate;

And/or,

Described a pair of end cap is steel plate.

Generator casing can be various shape in an embodiment of the present utility model, preferably, for cylindric, can be convenient to save the space and be convenient to rotor rotate in inside.Generator casing cylindraceous has sidewall and a pair of end cap.Preferably, a plurality of rectifiers are arranged on the inwall of sidewall, as shown in figures 1 and 3, a plurality of rectifiers 7 are arranged on the inwall of sidewall 9, are convenient to make and install, and can make compact conformation simultaneously.Preferably, sidewall is aluminium alloy plate, can alleviate the weight of generator.Preferably, a pair of end cap is steel plate, can increase the intensity of generator casing, the internal structure of protection generator.

In each embodiment of the present utility model, preferably, described generator has the pivot center perpendicular to described a pair of end cap, and described a plurality of rectifiers center on described pivot center annular spread on the inwall of described sidewall.

The pivot center perpendicular to a pair of end cap of generator is the pivot center of rotor, and on the inwall of the sidewall of generator casing, marshalling makes the structure of generator more regular to a plurality of rectifiers, is convenient to the setting of other structures around this pivot center annular spread.As shown in Figure 3, a plurality of rectifier 7 annular spread are on the inwall of sidewall 9.

In each embodiment of the present utility model, preferably, described brushless DC generator further comprises:

Fin, it is distributed on the outer wall of described generator casing.

In each embodiment of the present utility model, preferably, described fin extends to another described end cap from one of them described end cap;

And/or,

Described generator has the pivot center perpendicular to described a pair of end cap, and on the direction perpendicular to this pivot center, described fin has the shape from the outer wall of described generator casing to the terminal convergent of described fin.

In an embodiment as shown in Figures 2 and 3, because generator can produce more heat energy when work, the temperature of generator is higher, in order to guarantee that generator can work, but be provided with fin 12 on the outer wall of generator casing, to distribute the heat of generator.Preferably, fin 12 is arranged on the outer wall of sidewall 9.Preferably, fin extends to another end cap from an end cap of generator casing, more preferably, extends to another end cap, can extend to rear end cap 8 by the front end housing 2 from figure.Preferably, the shape of fin 12 is arranged to triangular shaped among Fig. 2 and Fig. 3, namely on the direction perpendicular to the pivot center of the rotor of generator, fin 12 has the shape of end from from the outer wall of generator casing to the described fin direction of generator casing (namely away from) convergent, and such shape can help distributing of heat.Preferably, fin is a plurality of, and evenly distributes, and can make the shape of generator more regular, and it is more even that heat also distributes.

Built-in fans, the one or both ends that it is arranged on the inside of described generator casing and is positioned at the rotation axis of described rotor, the rotation axis of described rotor drives described built-in fans and rotates;

And/or,

External fan, it is arranged on the outside of described generator casing and is positioned on the rotation axis of described rotor, and the rotation axis of described rotor drives described external fan and rotates.

In each embodiment of the present utility model, preferably, described a plurality of rectifier annular spread and is close to the wherein end of described generator casing on the inwall of described generator casing, the outer setting of this of described generator casing end has described external fan.

Fan housing, it is connected with described generator casing, and covers on the periphery of described external fan.

In an embodiment of the present utility model, with reference to Fig. 1, in the inside of generator casing fan is set and is convenient to the generator ventilation and heat.In the one or both ends of the rotation axis of rotor 5, namely the one or both sides of rotor 5 can arrange built-in fans, preferably, the first built-in fans 4 and the second built-in fans 6 are set respectively in the both sides of rotor 5, can be evenly, fast the generator casing inner ventilation is dispelled the heat.Preferably, built-in fans is arranged on the rotation axis of rotor, rotor can drive built-in fans by rotation axis and together rotate when rotating, and is simple in structure, and the power of rotation need not be provided for built-in fans separately again, saves the energy.

In an embodiment of the present utility model, with reference to Fig. 1, can be convenient to accelerate the ventilation and heat of generator at the outer setting fan of generator casing.External fan can be arranged on the one or both ends of generator casing.A plurality of rectifiers 7 of generator are when work, also can produce a large amount of heats, can be with a plurality of rectifier 7 annular spread on the inwall of an end of close generator casing, for example can be arranged on the sidewall 9 of generator casing near the position of rear end cap 8, at this moment, external fan 10 can be arranged on the outer wall of rear end cap 8 or near the position of rear end cap 8, so that distribute the heat that a plurality of rectifiers 7 produce.Preferably, external fan is arranged on the rotation axis of rotor, rotor can drive external fan by rotation axis and together rotate when rotating, and is simple in structure, and the power of rotation need not be provided for external fan separately again, saves the energy.

In an embodiment of the present utility model, with reference to Fig. 1, be covered with fan housing 11 in the periphery of external fan, so that external fan is protected, and effectively avoid generator when starting, external fan causes scratch to human body or other devices.

In Fig. 1, Fig. 2, embodiment shown in Figure 3, generator also is provided with output axle key 1, so that the output electric energy.Output axle key 1 place can be connected with electric power output cassette 13.

By the utility model provide different embodiment, can bring following at least a beneficial effect:

1. a kind of generator of compact conformation can be provided.In brushless DC generator of the present utility model, a plurality of rectifiers are built in the inside of brushless DC generator, a plurality of rectifiers are arranged on the inwall of generator casing, changed the structure that a plurality of rectifiers in the prior art are arranged on the outside of generator casing, so that generator is simple in structure, and more compact structure.

2. can carry out preferably ventilation and heat to generator.The inside of generator of the present utility model is provided with built-in fans, outer setting has external fan, by the rotation of built-in fans and external fan, can the inside of generator be ventilated and dispel the heat.Outer wall at generator casing arranges fin simultaneously, can further play the effect of heat radiation.

The various embodiment that the utility model provides can be as required in any way mutually combination, the technical scheme that obtains by this combination is also in scope of the present utility model.

Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also comprises these changes and modification interior.

Claims

1. a brushless DC generator is characterized in that, comprising:

Stator, rotor, a plurality of rectifier, generator casing;

2. brushless DC generator as claimed in claim 1 is characterized in that,

Described generator casing comprises sidewall and a pair of end cap.

3. brushless DC generator as claimed in claim 2 is characterized in that,

Described generator casing is the closed shell;

And/or,

4. brushless DC generator as claimed in claim 2 is characterized in that, described generator has the pivot center perpendicular to described a pair of end cap, and described a plurality of rectifiers center on described pivot center annular spread on the inwall of described sidewall.

5. brushless DC generator as claimed in claim 2 is characterized in that,

Described sidewall is aluminium alloy plate;

And/or,

Described a pair of end cap is steel plate.

6. brushless DC generator as claimed in claim 2 is characterized in that, further comprises:

Fin, it is distributed on the outer wall of described generator casing.

7. brushless DC generator as claimed in claim 6 is characterized in that,

Described fin extends to another described end cap from one of them described end cap;

And/or,

8. such as each described brushless DC generator of claim 1-7, it is characterized in that, further comprise:

And/or,

9. brushless DC generator as claimed in claim 8, it is characterized in that, described a plurality of rectifier annular spread and is close to the wherein end of described generator casing on the inwall of described generator casing, the outer setting of this of described generator casing end has described external fan.

10. brushless DC generator as claimed in claim 8 is characterized in that, further comprises: