CN2246865Y - Domestic miniature generator - Google Patents

Abstract

The utility model relates to a domestic miniature generator, which provides a novel generator set which is directly combined with a power machine. The utility model is composed of a stator, a rotor and a generator casing, wherein, the stator adopts a T-shaped tooth, and the full rate of a winding slot is 70%-80%. The rotor is sheathed out of the stator, the magnetic pole of the rotor is a skewed pole made of rare-earth magnetic steel, the rotor part is directly arranged on a rotating shaft of the power machine, and the power generator part is directly connected with the power machine part. The utility model has the advantages of compact structure, reliable and effective utilization, little resistance, low cost, simple working procedure, convenient carrying, etc., and the utility model is suitable for being used in no power or power failure town families, remote regions and field operation.

Description

The domestic miniature generator

The utility model belongs to the domestic miniature generator in the generating equipment, is applicable to engines such as gasoline engine, diesel engines to form generating set.

Along with improving constantly of people's living standard, household electrical appliance also increase day by day.But owing to domestic supply of electric power is also quite nervous, therefore country, will be limited unproductive electricity consumption for the electricity consumption of assurance production with some engineering project, so have a power failure then just unavoidably.These people are usually felt inconvenience, and simultaneously, China has many outlying districts also to fail to have access to electricity, and then is that people long for so manufacture and design the generating equipments when having a power failure such as entertainment place of some suitable urban families and some a small amount of electricity consumptions.Not only volume is big for the generating set of being sold in the market, Heavy Weight, and noise is also big, and particularly price is also expensive, its price of homemade generator of a general 750W--1200W is all at 2500 yuan--and between 3500 yuan, this also is difficult to bear for most consumers.

The people is arranged now on the basis of conventional electric generators, adopted rare earth permanent-magnetic material to make the external-rotor-type generator through improvement and trial-production, adopt the method for direct connection to reach compact conformation, volume is little and lightweight purpose, is exactly wherein a kind of form as Chinese patent 892111305 patents.This patent endangers output voltage waveforms (even output voltage waveforms produces distortion) because rotor magnetic pole adopts straight polar form so this design very easily produces the slot ripples electromotive force.Also directly be enclosed within on " straight-tooth " type armature in coiling on the mould owing to its stator (armature) coil simultaneously, though work efficiency can improve, its radiating condition difference and stock utilization are low, and especially the terminal stud of coil increases, thus the relative variation of reliability.Because " straight-tooth " type armature is compared with " T type " tooth armature, tooth magnetic is close all low than " T type " tooth armature with stock utilization.There is Harmonic Interference big simultaneously, shortcoming such as output waveform is of poor quality, and pole surface loss and zigzag reactance are big.Pretend to a kind of new product and promote, still exist some problems and await solving.

The purpose of this utility model is that a kind of energy of design is removed the harm of above-mentioned slot ripples electromotive force to voltage waveform, reduces pole surface loss and zigzag reactance etc.Simultaneously, stator (armature) winding adopts the higher Sine distribution winding of waveform quality, and in order to improve coiling and caulking groove effect, the setting of whole main winding can disposable coiled, and the centre need not connector lug, thereby has improved the functional reliability of complete machine.Reduce cost simultaneously, dwindled volume, alleviated weight.

The utility model is made up of stator (armature), rotor, generator casing.Generator unit stator is made of armature coil and armature core; Rotor then is made of rare earth magnetic steel, rotor case.Admittedly above paired oblique rare earth magnetic steel on the rotor case inner round wall, rotor is installed in outside the stator, need not shaft coupling, be directly installed in the engine rotating shaft.Stator directly is fixed on the generator casing, and armature core adopts close higher " T type " tooth of tooth magnetic.Directly embed main winding on it, main winding does not take the groove number usually, generally only accounts for the 70-80% of groove, makes complete machine dwindle volume, has alleviated weight, has reduced cost, makes final assembly more easy, compactness.

The utility model is that the magnetic pole of external rotor is made skewed pole, promptly the parallel oblique angle that is cut into, magnetic pole two ends, the oblique angle is the tooth pitch of " T type tooth " for corresponding chord length, not only slot ripples can be eliminated but also radiating condition can be improved, and can guarantee the job stability of rareearth magnetic material, thereby improve the intrinsic regulation of generator output voltage.

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the right view of structural representation of the present utility model.

Fig. 3 is " T type " of the present utility model tooth armature core schematic diagram.

With reference to Fig. 1, Fig. 2, the utility model is by stator (armature) (1), rotor (2), and generator casing (3) is formed; Stator (1) is fixed on the generator casing (3), generator is an external-rotor-type, be that rotor (2) is installed in outside the stator (armature) (1), rotor is made of rotor case and skewed pole (4), skewed pole adopt rare earth permanent-magnetic material with high magnetic energy collection (as neodymium iron boron, samarium estimate etc.) make or directly compacting form.Be fixed with a pair of above skewed pole on this rotor case inner round wall symmetrically.Armature spindle (6) is equipped with cooling fan (5) by rotor-end.Rotor (2) is directly installed in the rotating shaft (6) of engine fan end face, and is with engine (as gasoline engine, diesel engine etc.) run-in synchronism, with reduced volume, convenient and reliable.And it is the price of reduction generating set, and easily manufactured, simple.

With reference to Fig. 3,24 or 36 " the T type tooth " that evenly distribute on the armature core of stator, close in order to increase tooth magnetic, should be embedded with main winding in " T type tooth " groove, main winding only accounts for the 70-80% of teeth groove usually, helps weight reduction like this and is convenient to assembling.

Domestic miniature generator and gasoline engine, diesel engine or other engines are joined as Movers Cover like this, not only can be used for the family that the city has a power failure and generate electricity, and also can be used for not having electricity Cities and towns, rural area, small-sized public place of entertainment, field work, the illumination of outlying mountain area and general electricity The device electricity consumption. Because volume is little, in light weight, cost is low, is that general ad eundem (refers to output work The type that rate is identical) about 1/2nd of the generator price. Both had and be easy to carry, again Safe and reliable and manufacturing process is easy to be with low cost, the advantage that applicability is strong.

Claims (3)

1, a kind of domestic miniature generator that is made of stator, rotor, generator casing is characterized in that:

A, rotor are made up of rotor case and rare earth skewed pole, rare earth skewed pole rotor is installed in stator outside, be fixed with symmetrically on the rotor case inner ring wall a pair of above be the skewed pole of " T type tooth " tooth pitch in order to suppress the harmonic wave electromotive force corresponding to the armature teeth groove to the oblique angle of output voltage waveforms harm;

Evenly distribution 24-36 is individual in order to increase close " the T type tooth " of tooth magnetic on B, the stator; The 70-80% of " T type tooth " groove is embedded with main winding.

2 domestic miniature generators according to claim 1 is characterized in that: rotor portion directly is contained in the engine rotating shaft; Stationary part is installed on the generator casing; Generator casing directly is fixed on the engine end cap.

3, according to the described domestic miniature generator of claim 1, it is characterized in that: the rare earth skewed pole adopts manufacturings such as the permanent-magnet steel rubidium iron boron of high magnetic energy collection or SmCo or suppresses and forms.

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