CN102121417B

CN102121417B - Minitype generator

Info

Publication number: CN102121417B
Application number: CN201110073832A
Authority: CN
Inventors: 田蜜; 何林
Original assignee: CHONGQING LIHUA TECHNOLOGY Co Ltd
Current assignee: CHONGQING LIHUA TECHNOLOGY Co Ltd
Priority date: 2011-03-25
Filing date: 2011-03-25
Publication date: 2012-09-26
Anticipated expiration: 2031-03-25
Also published as: CN102121417A

Abstract

The invention provides a minitype generator which comprises a generator, an engine, a silencer, a base plate and a chassis which are arranged in a shell sequentially; a cooling fan is respectively arranged at two sides of a crank shaft box of the engine; the cooling fans are coaxial with an output shaft of the engine and rotate under the driving of the output shaft of the engine; the engine is arranged in a tilted cylinder mode; and the silencer is positioned in an accommodating space between a cylinder head and the base plate. According to the invention, by the placement position of the silencer, the space utilization ratio is improved greatly, and the size of the minitype generator is more miniaturized and the generator is of a portable rectangular shape; moreover, since the cooling air duct is arranged additionally, the cooling requirement of the engine is satisfied effectively, and the minitype generator is of a rectangular shape. Through the two measures, the movability and portability of the generator are improved, and the generator has an excellent cooling effect.

Description

Small generator

Technical field

The present invention relates to the small generator field, wherein generator is contained in the housing with the motor that drives generator, and this motor via assembling set by chassis supports.

Background technique

Known small generator of new generation, it comprises generator, carries out the electronic inverter of power conversion, drives the motor of generator; The cooling fan that links to each other with the engine-driving axle, the air channel of guiding air flow, and motor and cooling fan are contained in the housing; Support the chassis of said housing, air inlet and cooling air relief opening are arranged on the housing, when work; Produce electric energy through engine driven generators rotation synchronously, through electronic inverter the electric energy of this output is handled again, and make all very high small generators of performance such as frequency, waveform, voltage; Because small generator of new generation adopts intermediate frequency generator through electronic inverter conversion output electric energy, than conventional electric generators, its conversion efficiency is higher; Weight is lighter, and in addition, engine speed changes along with the variation of load constantly; Compare with traditional small-sized constant speed engine, the motor conversion efficiency improves greatly when less load, is being in little load condition under the use condition usually because of small generator again; Thereby reach purpose of energy saving, because of above-mentioned advantage, in the small generator field; A new generation's small generator just progressively replaces the conventional small generator, and portable small-sized generator is because of its volume is little, in light weight, noise is little, mobility is strong, outward appearance fashion, and becomes small generator main trend of new generation.

In existing technology, traditional small generator, the operation of cooling fan makes outside air pass through air inlet and sucks in the housing; Thereby can with cooled engine, then flow through the baffler that is arranged in the cylinder head side with the outside air of introducing as in the cooling air guiding motor air channel; With the cooling baffler, flow through the cooling air relief opening at last, be discharged to beyond the housing; Because baffler is arranged in the engine cylinder body side surface, in order to reduce the baffler temperature, makes engine operation normal; Cooling duct has had more a baffler width in the side, is the consistent square bodys of length and width thereby make small generator; Because wider width is limited greatly in the mobility and the portability of handling process medium and small generator.In this external conventional electric generators, cooling air under the effect of centrifugal cutter, by cylinder head one effluent to opposite side; Cooling cylinder head and the casing that is connected with cylinder head flow through the baffler in the cylinder head side then, behind the cooling baffler, discharge; Since cooling air when flowing through motor and the surface of contact of motor be only limited to cylinder head, cylinder body and baffler; Other face of engine housing does not have cooled gas to flow through basically, causes motor temperature when rated load is worked higher; Influence the life-span of motor and other parts, have to reduce rated load sometimes and reduce temperature.

Summary of the invention

In order to overcome the deficiency of above-mentioned existing technology, the present invention provides a kind of improved small generator, and more compactness is more reasonable can to make the layout of each parts, improving mobility with simultaneously portable, has outstanding cooling effect.

To achieve these goals, the technological scheme that the present invention adopts is such: promptly a kind of small generator, and this small generator comprises: generator; The electronic inverter that is used for power conversion is used to drive the motor of said generator, is used for the cooling duct of cooled engine; The fuel oil blender that links to each other with engine air inlet tube is used for the empty filter of filtered air dust, the igniter that is used to light a fire; The silencing apparatus that links to each other with the engine exhaust emission pipe; Support the base plate of said motor, hold the housing of above-mentioned generator, motor, baffler, base plate, support the chassis of said base plate, housing; It is characterized in that: said motor is that the diagonal-cylinder type that cylinder centerline and horizontal line are angle is settled, and said baffler is arranged between engine cylinder head below and the base plate in the holding space, makes small generator be rectangular shape.

Said structure also further comprises:

First cooling structure: through first cooling fan that is installed in the engine output shaft left end suck from the cool air of intake grill the wind scooper of first cooling fan, left side covering, under the guiding in the air channel that constitutes of covering and cylinder head covering; Form the two-way cooling duct, the one tunnel directly guides to the baffler left side cools off baffler; Cool off the end face of generator unit stator, generator casing, cylinder head and baffler successively on another road;

Second cooling structure: will get into the covering cool air through second cooling fan that is installed in the engine output shaft right-hand member and suck, under the guiding in the air channel that its wind scooper, cover plate and right side covering constitute, cool off on the right side of subtend baffler; Each road cooling air all compiles the back and discharges housing through the elasticity air guide sleeve at the baffler place.

In the said structure, owing to adopt two cooling fans to work simultaneously, under the situation of equal rotating speed; Fan is improved to the ability to function of air; The corresponding raising of cooling air flow velocity, covering on the limit has simultaneously increased radiating fin and cooling air has been flow through from the motor lower surface, increases the heat diffusion area that flows through motor; So the engine cooling effect is improved; Because the lifting of cooling effect can make identical generator output more high-power, thereby makes the specific power of small generator be able to promote.

Through above two measures, in mobility that improves small generator and portability, also make the specific power of small generator be able to promote.

Description of drawings

Fig. 1: whole perspective view;

Fig. 2: the flow direction of cooling air in housing;

Fig. 3: cooling air flows at engine interior;

Fig. 4: generator explosive view;

Fig. 5: small generator sectional view;

Fig. 6: the fan structure schematic representation, cooling air covers the flow direction on the limit;

Fig. 7: after removing the air channel cover plate, cooling air flows on motor;

Fig. 8: complete motor and air channel outward appearance;

Fig. 9: engine explosions schematic representation;

Figure 10: baffler goes out the position complementary views in motor;

Among the figure: 1-frame set, 1-1-left side housing, 1-2-starts handle, 1-3-handle, 1-4-fuel tank cap, 1-5-right side housing 1-6-panel; 1-7-combination oil switch, 2-chassis component, 2-1,2-2,2-4,2-5-outer damping pad, 2-4-chassis, 3-bottom deck assembly, 3-1-base plate; 3-2,3-3,3-4,3-5-interior damping pad, 4-the first cooling package, dish is drawn in 4-1-startup, 4-2-wind scooper, 4-3-first cooling fan, 5-generator assembly; 5-1-rotor, 5-2-stator, 6-the second cooling package, 6-1-limit lid, 6-2-dividing plate; 6-3-second cooling fan, 6-4-cover plate, 7-ducting assembly, 7-1-right side covering, 7-2-last covering; 7-3-cylinder head covering, 7-4-left side covering, 7-5-elasticity air guide sleeve, 8-air filter, 9-fuel mixer; 10-ignition mechanism, 11-baffler, 12-engine pack, 12-1-cylinder cap, 12-2-cylinder head; 12-3-casing, 12-4-bent axle, 13-electronic inverter, 15-the first cooling structure cooling air flows to, and 16-the second cooling structure cooling air flows to.

Embodiment

Below describe mode of execution of the present invention, be not limited to said mode of execution but should understand the present invention, under the situation that does not deviate from basic principle, can carry out various modifications to the present invention, therefore, scope of the present invention only is indicated in the appended claims.

Referring to accompanying drawing, small generator comprises: generator 5 is used for the electronic inverter 13 of power conversion; Be used to drive the motor 12 of said generator 5, be used for the

cooling duct

4,6,7 of cooled engine 12, the fuel oil blender 9 that links to each other with engine air inlet tube; The empty filter 8 that is used for the filtered air dust; The igniter 10 that is used to light a fire, the silencing apparatus 11 that links to each other with the engine exhaust emission pipe supports the base plate 3 of said motor 12; The housing 1 that holds above-mentioned generator 5, motor 12, baffler 11, base plate 3 supports the chassis 2 of said base plate 3, housing 1; It is characterized in that:

Said motor is that the diagonal-cylinder type that cylinder centerline 14-1 and horizontal line 14-2 are angle is settled, and said baffler 11 is below cylinder head 12-2 and between the base plate 3 in the holding space;

The fuel tank 1-8 that is used for fuel reservoir, the interior upper wall and the motor 12 that hang on housing 1 are separated with certain clearance, and the vibration and the fuel tank that produce when making motor 12 work are isolated.

Motor 12 is seated on the base plate 3, is connected by screw, and base plate 3 is connected by 4 inner rubber damping pad 3-2,3-3,3-4,3-5 with chassis 2, and the vibration that motor is delivered to chassis 2 can effectively be suppressed, and the Oscillation Amplitude on chassis reduces greatly.

2 bottoms, chassis have 4 outer damping pad 2-1,2-2,2-4,2-5; Damping pad is processed by rubber; Contact with ground through damping pad; Can small generator roughly be kept level, and can further absorb the vibration that chassis 2 produces, thereby make mini engine can not produce mobile at work because of vibration.

The noise that engine luggine produces; With the motor is center radiation towards periphery, has certain interval owing to housing 1 is fixed on the chassis 2 and with motor 12, when noise arrives housing 1; A part is passed housing 1 and is continued radiation to space outerpace; Another part will be inhaled and the reflected back motor by housing 1, because the absorption of housing makes the sound wave that gives off small generator obtain decay by a relatively large margin with reflection, thereby reduce noise pollution.

Motor shown in figure 10, that diagonal-cylinder type is settled, its cylinder centerline 14-1 and horizontal line 14-2 are the angle of θ degree; The cylinder arrangement at angle of inclination can effectively reduce motor center of gravity G and reduce the motor height H, and the G point just in time is positioned in the middle of the mini engine simultaneously; Can effectively improve the stationarity in complete machine work or the handling process, cylinder centerline and horizontal line are θ degree angle, form a free space; Thereby can baffler 11 be arranged in the free space, baffler is arranged in the free space, can effectively reduce; The small generator size, and make the cuboid that is shaped as of micro-machine.

Air inlet/supply of fuel mechanism to motor fuel supplying (being air-fuel mixture) comprises:

The fuel tank 1-8 that is used for fuel reservoir; Be arranged at the air filter 8 on cylinder cap 12-1 top; Be arranged at the fuel mixer 9 of cylinder head 12-2 sidepiece; This fuel mixer 9 is used for mixing from fuel tank 1-8 supplied fuel with from air filter 8 air supplied, is supplied to motor 12 thereby synthetic fuel is mixed gas.

Engine-driving bent axle 12-4 makes its rotation, and bent axle 12-4 rotation is passed to the generator amature 5-1 and the one the second cooling fan fan 4-3 and the 6-3, generator amature 5-1 revolution outside stator 5-2; Make stator coil produce electric energy, the one the second cooling fan fan rotations drive the rotation of fan ambient air, make cooling air because of centrifugal force produces outer high in the pressure reduction at the end; Produce negative pressure at the cooling fan middle part; Make the air that gets in the housing 2 flow into negative pressuren zone, the cooling air in the zone of high pressure passes through

air channel

4,6 and 7, flows through motor 12 surfaces and takes away heat energy; Reduce motor 12 bulk temperatures; The baffler 11 of flowing through is again taken away heat energy, reduces baffler 11 temperature, and last cooling air is discharged housing 1 through the elasticity air guide sleeve.

Further say; With the cooling air that gets into housing 1, through centrifugal cutter 4-3 effect, the wind scooper 4-2 of first cooling fan, left side covering 7-4, under the guiding in air channel of covering 7-2 and cylinder head covering 7-3 formation; Wherein a curb 15-3 arrow direction flows; With the left side of its guiding baffler 11, behind the cooling baffler,, cooling air is discharged housing 1 through elasticity air guide sleeve 7-5; Another curb 15-4 arrow direction flows, with its guiding engine cylinder-body 12-3-1, cylinder head 12-2, behind cooling cylinder body 12-3-1, cylinder head 12-2, along 15-5 arrow direction; Join with 16-5, with the cooling air that gets into housing 1, through air channel 7-2, base plate 3-1 guiding, along 16-1,16-2,16-3 arrow direction; The flow through table wall of casing 12-3 is behind the cooling casing, along the 16-4 arrow direction generator limit lid radiating fin 6-1-1 that flows through, behind the lid 6-1 of cooling limit; Flow to centrifugal cutter 6-3, in the effect of centrifugal cutter 6-3, and under the guiding in the air channel that its wind scooper, cover plate 6-4 and right side covering 7-1 constitute; Flow along the 16-5 direction, after 15-5 joins, the right side of the baffler of flowing through; Behind the cooling baffler,, cooling air is discharged housing 1 through elasticity air guide sleeve 7-5.

The one cooling fan 4-3 and the second cooling fan 6-3 lay respectively at the engine crankcase both sides, and 12-4 is connected with engine output shaft, by the engine output shaft driven rotary.

Said cooling fan 6-3 concrete structure is as shown in Figure 6; Comprise a ring matrix 6-3-1 and evenly be arranged at the arc shaped blade 6-3-2 of matrix border; Directly matrix 6-3-1 inner ring sleeve being fixed on when mounted makes it rotate with bent axle 12-4 on the bent axle 12-4; Fan 6-3 rotation drives the rotation of fan ambient air, makes the pressure reduction of cooling air because of the end in high outside the centrifugal force generation.

Said elasticity air guide sleeve 7-5 is as shown in Figure 2; Has higher elasticity; The vibration and the housing 1 of motor 12 are isolated; Simultaneously elasticity air guide sleeve 7-5 isolates motor ducting outlet (hot-zone) with housing 1 internal negative pressure district (cold-zone), stops the high temperature cooling air behind flow through motor 12 and the baffler 11 to reflux, and hot-zone and cold-zone are separated from each other.

Said electronic inverter 13, the electric energy with generator unit stator 5-2 sends guides to the electronic inverter 13 that is fixed on the chassis 2 through lead; Handle through electronic inverter 13,, be transformed to all very stable electric energy of performance such as frequency, waveform, voltage the midfrequent ac electric energy; Defeated through lead at last, because electronic inverter 13 can produce heat energy when work, influence proper functioning; When air gets into housing 1, some gas will flow through electronic inverter 13, and its heat energy is taken away.

When the user started small generator, 1-7 rotated to enable position with enable switch, and left hand is held handle 1-3, and the right hand firmly pulling starts handle 1-2; Bent axle 12-4 is rotated because of pulling force, and bent axle 12-4 is passed to the piston (not shown) with rotating force, makes piston do back and forth movement, and sucks the mixed gas of carrying fuel; When mixed gas is compressed to the summit, under the effect of igniter 10, light mixed gas, promote piston; Make its acting, the merit of making is through bent axle 12-4 output, and a part of kinetic energy is by generator amature 5-1 storage, when ensuing cycle period; Generator amature 5-1 discharges kinetic energy, to promote crankshaft rotating, driven plunger; Waste gas is discharged, and suck the mixed gas of carrying fuel, mixed gas is compressed; Through igniter 10 mixed gas is lighted, in continuous circulation, motor just constantly converts chemical energy to the kinetic energy of rotation again.

Whole this layout makes small generator be the cuboid profile, has very high mobility and portability; The user can be through catching the handle 1-3 of cover top portion; Mention small generator is unsettled, be carried to desired locations easily, because very high mobility and portability; Increased attraction force, thereby improved the competitiveness of product in market the user.

Claims

1. small generator; This small generator comprises: generator (5), be used for the electronic inverter (13) of power conversion, and be used to drive the motor (12) of said generator (5); The cooling duct (4), (6), (7) that are used for cooled engine (12); The fuel oil blender that links to each other with engine air inlet tube (9) is used for the empty filter (8) of filtered air dust, the igniter that is used to light a fire (10); The baffler (11) that links to each other with the engine exhaust emission pipe; Support the base plate (3) of said motor (12), hold the housing (1) of above-mentioned generator (5), motor (12), baffler (11), base plate (3), support the chassis (2) of said base plate (3), housing (1); It is characterized in that: said motor is that cylinder centerline (14-1) is settled with the diagonal-cylinder type that horizontal line (14-2) is angle; Said baffler (11) is arranged between engine cylinder head (12-2) below and the base plate (3) in the holding space, makes small generator be rectangular shape;

This small generator comprises: first cooling structure: through first cooling fan (4-3) that is installed in the engine output shaft left end suck from the cool air of intake grill at wind scooper (4-2), the left side covering (7-4) of first cooling fan, go up under the guiding in the air channel that covering (7-2), cylinder head covering (7-3) and base plate constitute; Form the two-way cooling duct, the one tunnel directly guides to baffler (11) left side cools off baffler; Cool off the end face of generator unit stator (5-2), generator casing (12-3), cylinder head (12-2) and baffler (11) successively on another road; Second cooling structure: will get into covering (7-2) cool air through second cooling fan (6-3) that is installed in the engine output shaft right-hand member and suck; Under the guiding in the air channel that its wind scooper, cover plate (6-4) and right side covering (7-1) constitute, cool off on the right side of subtend baffler (11); Each road cooling air all compiles at the baffler place and discharges housing (1) through elasticity air guide sleeve (7-5).