CN102192005B - Medium-sized double-cylinder air cooling super-silent gasoline generator set - Google Patents

Medium-sized double-cylinder air cooling super-silent gasoline generator set Download PDF

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Publication number
CN102192005B
CN102192005B CN2011100943331A CN201110094333A CN102192005B CN 102192005 B CN102192005 B CN 102192005B CN 2011100943331 A CN2011100943331 A CN 2011100943331A CN 201110094333 A CN201110094333 A CN 201110094333A CN 102192005 B CN102192005 B CN 102192005B
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CN
China
Prior art keywords
fan
outer casing
central shaft
shell
medium
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Expired - Fee Related
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CN2011100943331A
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Chinese (zh)
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CN102192005A (en
Inventor
陈可庚
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FUJIAN RUNDA POWER MACHINERY CO., LTD.
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Twin Yue (fujian) Power Machinery Co Ltd
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Priority to CN2011100943331A priority Critical patent/CN102192005B/en
Publication of CN102192005A publication Critical patent/CN102192005A/en
Application granted granted Critical
Publication of CN102192005B publication Critical patent/CN102192005B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention discloses a medium-sized double-cylinder air cooling super-silent gasoline generator set, relates to a generator set, and aims to provide a medium-sized double-cylinder air cooling super-silent gasoline generator set which has low noise, controls temperature rise effectively and maintains the original power. The medium-sized double-cylinder air cooling super-silent gasoline generator set comprises an engine, a generator, an inner box body and an outer box body, wherein the inner box body comprises a top plate, a bottom plate, a left partition plate and a right partition plate; space on the right side of the right partition plate is communicated with space above the top plate to form a main air inlet cavity (A); a main operating cavity (B) is formed inside the inner box body and is communicated with the main air inlet cavity (A); space on the left side of the left partition plate forms a noise reduction exhaust cavity (C); the generator comprises a shell, a stator, a rotor and a central shaft; a front fan is fixedly arranged on the outer side of the front end of the central shaft; a front air outlet is formed on the shell; a fan shell is fixedly arranged at the rear end of the shell; a plurality of induced air holes communicated with the main operating cavity (B) are formed on the fan shell; and a rear fan is arranged in the fan shell.

Description

The medium-sized gasoline engine generator group of double cylinder wind cooling
Technical field
The present invention relates to a kind of generator set, particularly relate to a kind of generator set that has ventilation cooling system.
Background technique
Medium and small diesel oil, gasoline engine generator group; Mainly be used in places such as family, hospital, shop, school, bank, army, office building, communication device, sea farming, field work, frontier sentry, rescue and relief work; As emergent, standby power supply, of many uses.On the existing market, medium and small generator set is because of temperature rise, noise, discharging three big problems fail effectively to solve; Has only the unenclosed construction unit; Noise is big, discharging is poor, using effect is undesirable, and inconvenience fails to satisfy the client day by day to the high demand of unit quality.Because of the generator set operating temperature is high, noise is big, fuel is inflammable and explosive, and the combined influence of factors such as high-temperature evaporation has restricted the technology upgrading and the development of this product.Do not have a kind of high-quality, reliable, safe, practical super-silent so far, the generator set of good cooling results is put on market and by customer approval.
Summary of the invention
It is little that the technical problem that the present invention will solve provides a kind of noise, effectively controls temperature rise, keeps the medium-sized gasoline engine generator group of double cylinder wind cooling of original power.
The medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention comprises motor and generator, also comprises internal box and outer casing; The top cover internal fixation of said outer casing is provided with fuel tank; Said internal box comprises top board, base plate, left clapboard and right clapboard, and said top board is horizontally fixed on the below of fuel tank, and said floor level is fixed on the bottom of outer casing; Said left clapboard and right clapboard vertically are fixed between top board and the base plate; The space on said right clapboard right side is connected with the space of top board top and constitutes main air-inlet cavity A, offers the primary air inlet that is connected with main air-inlet cavity A on the said outer casing, the main active chamber B of the inner formation of said internal box; The through hole of offering on the said right clapboard makes main active chamber B be connected with main air-inlet cavity A; The space in said left clapboard left side constitutes noise reduction exhaust cavity C, and said outer casing bottom offers the main vent that is connected with noise reduction exhaust cavity C
Said motor is the double cylinder wind cooling petrol engine, and motor is installed in the main active chamber B near right clapboard, and the cooling fan on the motor is towards main air-inlet cavity A; Said generator is installed in the main active chamber B near left clapboard, and generator comprises shell, stator, rotor and central shaft, and said stator fixed installation in the enclosure; Said rotor is fixedly mounted on the central shaft, and the front end of said central shaft is connected with the output shaft of motor, and the rear end of central shaft is through being provided with in the enclosure bearing support and Bearing Installation at the shell rear portion; The front end outside of said central shaft is installed with front fan; Said front fan has at least two preceding centrifugal fans, and the anterior sidewall of said shell is provided with and the corresponding preceding exhaust port of preceding centrifugal fan, and the outer installment of said preceding exhaust port has following air outlet flue; Said down air outlet flue passes base plate and is connected with following exhaust port on the outer casing; Said shell rear sidewall is provided with rear air inlet, and the outer installment of said rear air inlet has following intake duct, and said down intake duct passes base plate and is connected with following intake grill on the outer casing; Be installed with Fan casing on the rear end of shell; The through hole that the rear portion of said Fan casing is passed on the left clapboard is connected with noise reduction exhaust cavity C, offers the some air inducing hole that is connected with main active chamber B on the anterior sidewall of Fan casing, is provided with aft-fan in the Fan casing; The shell wall that the front end of the aft-fan axle of said aft-fan passes Fan casing and shell is fixedly connected with the rear end of central shaft
Be equipped with two in the said main active chamber B and go up air outlet flue; Said two ends of going up air outlet flues respectively with two cylinder bodies of motor on fin section corresponding; Two the other ends of going up air outlet flue are separately fixed on two other through hole on the left clapboard; C is connected with the noise reduction exhaust cavity, and two outlet pipes of said motor go up air outlet flue through two respectively and noise reduction exhaust cavity C inside is connected with the exhaust pipe mouth of outer casing bottom.
The medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention is provided with some silencing boards in the wherein said Fan casing, said silencing board is installed in parallel between air inducing hole and the aft-fan, offers some dislocation hole on the silencing board.
The medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention, centrifugal fan or back shaft flow blade after wherein said aft-fan comprises at least two.
The medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention; Wherein said shell comprises protecgulum, stator outer housing, bonnet and the back fan housing that sets gradually from front to back; Be connected through the some front and rear covers clamping bolts that are positioned at the stator outer housing outside between protecgulum and the bonnet, the front end of said protecgulum offers and is suitable for the preceding through hole that engine output shaft passes, said before exhaust port be positioned on the protecgulum sidewall; And Open Side Down; The rear end of said back fan housing offers and is suitable for the back through hole that the aft-fan axle passes, and said rear air inlet is positioned on the fan housing sidewall of back, and Open Side Down.
The medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention is provided with the central shaft coaxial with it and uses fastening stay bolt in the wherein said central shaft, said central shaft is in the same place engine output shaft, central shaft and aft-fan axle three axial restraint with fastening stay bolt.
The medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention, the front end of wherein said central shaft axially offers the taper axis hole, and the taper spindle nose of said taper axis hole and engine output shaft is complementary.
The medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention; The front end of wherein said aft-fan axle is provided with male thread portion or female thread portion; The rear end of said central shaft is provided with female thread portion corresponding with it or male thread portion, and said male thread portion matches with female thread portion and is connected;
Perhaps the rear end of said central shaft insert in the front end of aft-fan axle and with its drive fit, the front end of said aft-fan axle radially is provided with a pair of pin, the inner of said pin is arranged in the groove or the hole of central shaft outer surface.
The medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention; On being positioned at two, wherein said two outlet pipes are in series with a shockproof bellows respectively on the body of air outlet flues; Two outlet pipes are positioned on the body of noise reduction exhaust cavity C an one-level baffler and two secondary bafflers are installed; Said two outlet pipes are installed on two suction ports of one-level baffler relatively, and two secondary bafflers are installed in respectively on two air outlets of one-level baffler.
The medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention; Wherein said primary air inlet comprises some inlet holes; Wherein the part inlet hole is positioned on the top cover sidewall of noise reduction exhaust cavity C top, and the remaining part inlet hole is positioned on the outer casing sidewall or diapire around main air-inlet cavity A; Said exhaust port down is positioned on the diapire of outer casing; Said down intake grill is positioned on the sidewall of outer casing of floor below.
The medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention, wherein said top cover are installed in through hinge on the sidewall of outer casing, between said fuel tank bottom and the top board pneumatic jack bar are installed;
Said generator and motor are supported on the base plate through the anti-vibration rubber pad of bottom;
Be pasted with the flame-retardant sponge of 20mm on the inwall of said outer casing; The upper surface of said top board is pasted with the flame-retardant sponge of 6mm, and lower surface is pasted with the glass fibre of 8mm, the aluminium platinum of 0.2mm and the flame-retardant sponge of 6mm successively; Be pasted with the flame-retardant sponge of 6mm on the left and right surfaces of said right clapboard respectively; Be pasted with the glass fibre of 8mm, the aluminium platinum of 0.2mm and the flame-retardant sponge of 6mm on the left and right surfaces of said left clapboard respectively from inside to outside successively;
The universal wheels that two big rubber tires and two strap brakes are installed of said outer casing bottom;
On the outer side wall of said outer casing pushing hands is installed;
Three openable side doors are installed on the sidewall of said outer casing, lock and Stamping Steel Ribbon are installed between said side door and top cover and the outer casing;
Emergency stop switch and tutorial light are installed on the outer side wall of said outer casing.
The medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention utilizes internal box and outer casing that generator set is separated into main air-inlet cavity A, main active chamber B and noise reduction exhaust cavity C; Motor and generator are installed in the main active chamber B; Cool air beyond the outer casing gets in the main air-inlet cavity A from the primary air inlet on the casing; Cooling fan on the motor cools off the cylinder part to motor in the sub-fraction cool air suction motor in the main air-inlet cavity A; Cooled air gets into noise reduction exhaust cavity C from last air exhaust channel, discharges outer casing from main vent then; Generator is separately installed with front fan and aft-fan at the two ends of central shaft; Preceding exhaust port, rear air inlet and front fan on the shell constituted the cooling duct in the generator casing, and when rotating the drive of central shaft at engine output shaft under, front fan is rotary work together thereupon; Under the pumping action of front fan; Cool air gets into air inlet duct down from the following suction port of outer casing bottom, gets in the shell from rear air inlet then, and cool air is extremely preceding through stator and rotor by the back; Exhaust port is discharged shell in the past again; Process air exhaust channel is down discharged from the following relief opening of outer casing bottom, along with the continuous circulation of cool air in generator casing, the inner temperature rise of generator is controlled effectively; Simultaneously, Fan casing and aft-fan have constituted the outside cooling duct of generator casing, because generator is when proper functioning; The outer surface of its shell is also at outside distribute heat; The temperature of main active chamber B also can increase, and aft-fan also rotary work along with the rotation of central shaft when generator is worked is under the pumping action of aft-fan; Most of cool air in the main air-inlet cavity A gets in the main active chamber B; Motor and generator surface are cooled off, and cooled air gets in the Fan casing from the air inducing hole on the Fan casing, and the rear portion from Fan casing enters in the noise reduction exhaust cavity C then; Discharge outer casing from main vent again, effective control has also been carried out in the temperature rise that generator casing is outside.Owing to adopt the above-mentioned air-cooled type of cooling in branch chamber, the each several part of generator set can both effectively be cooled off, because motor and generator are installed in two layer box bodies, make the noise of motor and generator obtain effective control again.
The partial-air admission hole of primary air inlet is positioned on the top cover sidewall of noise reduction exhaust cavity C top in the medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention; When generator set is worked; Part cool air gets into from the inlet hole on the top cover sidewall; Cavity through between fuel tank below and the top board gets in main air-inlet cavity A and the main active chamber B, thereby fuel tank is also cooled off, and suppresses the gasoline high-temperature evaporation in the fuel tank.
Below in conjunction with accompanying drawing the medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention is described further.
Description of drawings
Fig. 1 looks sectional view for the master of the medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention;
Fig. 2 looks sectional view for the master of generator in the medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention;
Fig. 3 looks sectional view (not being with wheel) for the left side of the medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention;
Fig. 4 is the right elevation (not being with wheel) of the medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention;
Fig. 5 is the plan view (opening top cover) of the medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention;
Fig. 6 is the partial enlarged drawing at I place among Fig. 2;
Fig. 7 a is the aft-fan axle of generator in the medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention and first kind of embodiment of central shaft Placement;
Fig. 7 b is the aft-fan axle of generator in the medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention and second kind of embodiment of central shaft Placement;
Fig. 7 c is the aft-fan axle of generator in the medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention and the third embodiment of central shaft Placement.
Embodiment
As shown in Figure 1, the medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention comprises motor 30, generator 31, internal box 32 and outer casing 33, and top cover 60 internal fixation of outer casing 33 are provided with fuel tank 34.Internal box 32 comprises top board 35, base plate 36, left clapboard 37 and right clapboard 38; Top board 35 is horizontally fixed on the below of fuel tank 34; Base plate 36 is horizontally fixed on the bottom of outer casing 33; Left clapboard 37 and right clapboard 38 vertically are fixed between top board 35 and the base plate 36, and the space on right clapboard 38 right sides is connected with the space of top board 35 tops and constitutes main air-inlet cavity A, offers the primary air inlet 39 that is connected with main air-inlet cavity A on the outer casing 33.The main active chamber B of internal box 32 inner formations; The through hole of offering on the right clapboard 38 makes main active chamber B be connected with main air-inlet cavity A; The space in left clapboard 37 left sides constitutes noise reduction exhaust cavity C, and outer casing 33 bottoms offer the main vent 40 that is connected with noise reduction exhaust cavity C.Primary air inlet 39 comprises some inlet holes, and wherein the part inlet hole is positioned on top cover 60 sidewalls of noise reduction exhaust cavity C top, and the remaining part inlet hole is positioned on outer casing 33 sidewalls or diapire around main air-inlet cavity A.Generator 31 is supported on the base plate 36 with the vibrationproof rubber cushion 53 of motor 30 through the bottom; Vibrationproof rubber cushion 53 can reduce main frame vibration and noise; Motor 30 is the double cylinder wind cooling petrol engine; Motor 30 is installed in the main active chamber B near right clapboard 38, and the cooling fan on the motor 30 is towards main air-inlet cavity A, and generator 31 is installed in the main active chamber B near left clapboard 37.
In conjunction with shown in Figure 2; Generator 31 comprises shell 1, stator 2, rotor 3 and central shaft 4, and shell 1 comprises the protecgulum 19 that sets gradually from front to back, stator outer housing 20, bonnet 21 and back fan housing 22, is connected through the some front and rear covers clamping bolts 23 that are positioned at stator outer housing 20 outsides between protecgulum 19 and the bonnet 21; The front end of protecgulum 19 offers and is suitable for the preceding through hole 24 that engine output shaft passes; Stator 2 is fixedly mounted in the shell 1, and rotor 3 is fixedly mounted on the central shaft 4, and the front end of central shaft 4 axially offers taper axis hole 27; Taper axis hole 27 is complementary with the taper spindle nose of engine output shaft, is used for being connected with the output shaft of motor.The rear end of central shaft 4 is installed in shell 1 rear portion through the bearing support 5 that is arranged on the bonnet 21 with bearing 6; The front end outside of central shaft 4 is installed with front fan 7; Front fan 7 has four preceding centrifugal fans 8, and the sidewall of protecgulum 19 is provided with and preceding centrifugal fan 8 corresponding preceding exhaust ports 9, and the outer installment of preceding exhaust port 9 has following air outlet flue 41; Following air outlet flue 41 passes base plate 36 and is connected with following exhaust port 42 on the outer casing 33, and following exhaust port 42 is positioned on the diapire of outer casing 33.The sidewall of back fan housing 22 is provided with rear air inlet 10; The outer installment of rear air inlet 10 has following intake duct 43; Following intake duct 43 passes base plate 36 and is connected with following intake grill 44 on the outer casing 33, and following intake grill 44 is positioned on the sidewall of outer casing 33 of base plate 36 belows.
Through bolt Fan casing 11 is installed on the rear end of back fan housing 22; The through hole that the rear portion of Fan casing 11 is passed on the left clapboard 37 is connected with noise reduction exhaust cavity C; Offer the air inducing hole 12 that some and main active chamber B is connected on the anterior sidewall of Fan casing 11; Be provided with aft-fan 13 in the Fan casing 11, shaft flow blade 17 after aft-fan 13 comprises four, fan blade 17 adopts ADC12 cast aluminium fan blade or glass fibre to add nylon 66 injection moulding fan blades.The shell wall that the front end of the aft-fan axle 14 of aft-fan 13 passes Fan casing 11 and back fan housing 22 is fixedly connected with the rear end of central shaft 4.In this mode of execution, the Placement of aft-fan axle 14 and central shaft 4 is shown in Fig. 7 a, and the front end of aft-fan axle 14 is provided with male thread portion, and the rear end of central shaft 4 is provided with female thread portion, and male thread portion matches with female thread portion and is connected.Be provided with the central shaft coaxial with it in the central shaft 4 with fastening stay bolt 26, central shaft inserts from the rear end of central shaft 4 with fastening stay bolt 26, and engine output shaft, central shaft 4 and aft-fan axle 14 three's axial restraints are in the same place.Be provided with 3 silencing boards 15 in the Fan casing 11; Silencing board 15 is installed in parallel between air inducing hole 12 and the aft-fan 13, in conjunction with shown in Figure 6, offers some dislocation hole 16 on the silencing board 15; These dislocation holes 16 can be passed through air-flow, and sound wave is played certain barrier effect.
Be equipped with two in the main active chamber B and go up air outlet flue 45; Two ends of going up air outlet flues 45 respectively with two cylinder bodies of motor 30 on fin section corresponding; Two the other ends of going up air outlet flue 45 are separately fixed on two other through hole on the left clapboard 37, and C is connected with the noise reduction exhaust cavity.In conjunction with shown in Figure 3; Two outlet pipes 46 of motor 30 are gone up air outlet flue 45 through two respectively and are connected with the exhaust pipe mouth 47 of outer casing 33 bottoms with noise reduction exhaust cavity C is inner; On being positioned at two, two outlet pipes 46 are in series with a shockproof bellows 48 respectively on the body of air outlet flues 45; Two outlet pipes 46 are positioned on the body of noise reduction exhaust cavity C an one-level baffler 49 and two secondary bafflers 50 are installed; Two outlet pipes 46 are installed on two suction ports of one-level baffler 49 relatively; Two secondary bafflers 50 are connected on two air outlets of one-level baffler 49, and the surfaces coated of baffler is covered with 600 ℃ heat-resisting high temperature lacquer, wherein can catalyst converter be installed according to the requirement of emission standard in baffler.
Like Fig. 4 and shown in Figure 5, top cover 60 is installed in through hinge 51 on the sidewall of outer casing 33, between fuel tank 34 bottoms and the top board 35 pneumatic jack bar 52 is installed, and can open top cover 60 when needing, and with pneumatic jack bar 52 top cover 60 is supported.The universal wheels 55 that two big rubber tires 54 and two strap brakes are installed of outer casing 33 bottoms is equipped with pushing hands 56 on the outer side wall of outer casing 33, be convenient to move the whole generating unit, and it is parked in suitable position.Three openable side doors 57 are installed on the sidewall of outer casing 33; Between side door 57 and top cover 60 and the outer casing 33 lock is installed; Junction plane place in side door 57 and top cover 60 and outer casing 33 is equipped with the thick Stamping Steel Ribbon of 2mm, can safeguard through opening 60 pairs of generator set of side door 57 or top cover.Emergency stop switch 58 and tutorial light 59 are installed on the outer side wall of outer casing 33.
In order to improve quiet effect, and the cooling effect of each cooling chamber is not influenced each other, be pasted with the flame-retardant sponge of 20mm on the inwall of outer casing 33; The upper surface of top board 35 is pasted with the flame-retardant sponge of 6mm, and lower surface is pasted with the glass fibre of 8mm, the aluminium platinum of 0.2mm and the flame-retardant sponge of 6mm successively; Be pasted with the flame-retardant sponge of 6mm on the left and right surfaces of right clapboard 38 respectively; Be pasted with the glass fibre of 8mm, the aluminium platinum of 0.2mm and the flame-retardant sponge of 6mm on the left and right surfaces of left clapboard 37 respectively from inside to outside successively.
Main frame heat dissipating capacity and heat exhaust when the exhaust air rate of aft-fan 13 is greater than generator 31 rated power in the medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention; The full admission amount of primary air inlet 39 is greater than the exhaust air rate sum of cooling fans and aft-fan 13 in the motor 30, so just can make in the casing of whole generating unit to reach thermal equilibrium state.
The medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention utilizes internal box and outer casing that generator set is separated into main air-inlet cavity A, main active chamber B and noise reduction exhaust cavity C; Motor and generator are installed in the main active chamber B; Cool air beyond the outer casing gets in the main air-inlet cavity A from the primary air inlet on the casing; Cooling fan on the motor cools off the cylinder part to motor in the sub-fraction cool air suction motor in the main air-inlet cavity A; Cooled air gets into noise reduction exhaust cavity C from last air exhaust channel, discharges outer casing from main vent then; Generator is separately installed with front fan and aft-fan at the two ends of central shaft; Preceding exhaust port, rear air inlet and front fan on the shell constituted the cooling duct in the generator casing, and when rotating the drive of central shaft at engine output shaft under, front fan is rotary work together thereupon; Under the pumping action of front fan; Cool air gets into air inlet duct down from the following suction port of outer casing bottom, gets in the shell from rear air inlet then, and cool air is extremely preceding through stator and rotor by the back; Exhaust port is discharged shell in the past again; Process air exhaust channel is down discharged from the following relief opening of outer casing bottom, along with the continuous circulation of cool air in generator casing, the inner temperature rise of generator is controlled effectively; Simultaneously, Fan casing and aft-fan have constituted the outside cooling duct of generator casing, because generator is when proper functioning; The outer surface of its shell is also at outside distribute heat, and the temperature of main active chamber B also can increase, aft-fan also rotary work along with the rotation of central shaft when generator is worked; Under the pumping action of aft-fan; Most of cool air in the main air-inlet cavity A gets in the main active chamber B, and motor and generator surface are cooled off, and cooled air gets in the Fan casing from the air inducing hole on the Fan casing; Rear portion from Fan casing enters in the noise reduction exhaust cavity C then; Discharge outer casing from main vent again, effective control has also been carried out in the temperature rise that generator casing is outside, observed temperature can be controlled in 45 ~ 50 ℃.Owing to adopt the above-mentioned air-cooled type of cooling in branch chamber; The each several part of generator set can both effectively be cooled off; Because motor and generator are installed in two layer box bodies, make the noise of motor and generator obtain effective control again, survey 7 meters and have only 60 ~ 65 decibels.
On the basis of above-mentioned mode of execution, can suitably be out of shape, for example: centrifugal fan after aft-fan can comprise four, the rear sidewall of Fan casing are provided with and the corresponding back of centrifugal fan, back exhaust port.Aft-fan axle 14 can also adopt other dual mode with the Placement of central shaft 4; Shown in Fig. 7 b; The front end of aft-fan axle 14 is provided with female thread portion, and the rear end of central shaft 4 is provided with male thread portion, and male thread portion matches with female thread portion and is connected.Shown in Fig. 7 c, the rear end of central shaft 4 insert in the front end of aft-fan axle 14 and with its drive fit, the front end of aft-fan axle 14 radially is provided with a pair of pin 28, the inner of pin 28 is arranged in the groove 29 of central shaft 4 outer surfaces.
The output frequency of the medium-sized gasoline engine generator group of double cylinder wind cooling of the present invention is 50Hz or 60Hz, the single-phase 110V of voltage, 220V, 230V or 240V, three-phase 380V, 400V, 416V or 440V, rated power 8KVA ~ 25KVA.In this generator set, except use gasoline acts as a fuel, can also use natural gas, liquid gas or fuel combination.
Above-described embodiment describes preferred implementation of the present invention; Be not that scope of the present invention is limited; Design under the prerequisite of spirit not breaking away from the present invention; Various distortion and improvement that those of ordinary skills make technological scheme of the present invention all should fall in the definite protection domain of claims of the present invention.

Claims (10)

1. medium-sized gasoline engine generator group of double cylinder wind cooling; Comprise motor (30) and generator (31); It is characterized in that: also comprise internal box (32) and outer casing (33); Top cover (60) internal fixation of said outer casing (33) is provided with fuel tank (34); Said internal box (32) comprises top board (35), base plate (36), left clapboard (37) and right clapboard (38), and said top board (35) is horizontally fixed on the below of fuel tank (34), and said base plate (36) is horizontally fixed on the bottom of outer casing (33); Said left clapboard (37) and right clapboard (38) vertically are fixed between top board (35) and the base plate (36); The space on said right clapboard (38) right side is connected with the space of top board (35) top and constitutes main air-inlet cavity (A), offers the primary air inlet (39) that is connected with main air-inlet cavity (A) on the said outer casing (33), the inner formation of said internal box (32) main active chamber (B); The through hole of offering on the said right clapboard (38) makes main active chamber (B) be connected with main air-inlet cavity (A); The space in said left clapboard (37) left side constitutes noise reduction exhaust cavity (C), and said outer casing (33) bottom offers the main vent (40) that is connected with noise reduction exhaust cavity (C)
Said motor (30) is the double cylinder wind cooling petrol engine; Motor (30) is installed in the main active chamber (B) near right clapboard (38); Cooling fan on the motor (30) is towards main air-inlet cavity (A); Said generator (31) is installed in the main active chamber (B) near left clapboard (37); Generator (31) comprises shell (1), stator (2), rotor (3) and central shaft (4), and said stator (2) is fixedly mounted in the shell (1), and said rotor (3) is fixedly mounted on the central shaft (4); The front end of said central shaft (4) is connected with the output shaft of motor (30); The rear end of central shaft (4) is installed in shell (1) rear portion through bearing support (5) and the bearing (6) that is arranged in the shell (1), and the front end outside of said central shaft (4) is installed with front fan (7), and said front fan (7) has at least two preceding centrifugal fans (8); The anterior sidewall of said shell (1) is provided with and the corresponding preceding exhaust port (9) of preceding centrifugal fan (8); The outer installment of exhaust port (9) has following air outlet flue (41) before said, and said time air outlet flue (41) passes base plate (36) and be connected with following exhaust port (42) on the outer casing (33), and said shell (1) rear sidewall is provided with rear air inlet (10); The outer installment of said rear air inlet (10) has following intake duct (43); Said down intake duct (43) passes base plate (36) and is connected with following intake grill (44) on the outer casing (33), is installed with Fan casing (11) on the rear end of shell (1), and the through hole that the rear portion of said Fan casing (11) is passed on the left clapboard (37) is connected with noise reduction exhaust cavity (C); Offer the some air inducing hole (12) that is connected with main active chamber (B) on the anterior sidewall of Fan casing (11); Be provided with aft-fan (13) in the Fan casing (11), the shell wall that the front end of the aft-fan axle (14) of said aft-fan (13) passes Fan casing (11) and shell (1) is fixedly connected with the rear end of central shaft (4)
Be equipped with two in the said main active chamber (B) and go up air outlet flue (45); Said two ends of going up air outlet flues (45) respectively with two cylinder bodies of motor (30) on fin section corresponding; Two the other ends of going up air outlet flue (45) are fixed on two other through hole on the left clapboard (37); (C) is connected with the noise reduction exhaust cavity, and two outlet pipes (46) of said motor (30) go up air outlet flue (45) through two respectively and noise reduction exhaust cavity (C) inside is connected with the exhaust pipe mouth (47) of outer casing (33) bottom.
2. the medium-sized gasoline engine generator group of double cylinder wind cooling according to claim 1; It is characterized in that: be provided with some silencing boards (15) in the said Fan casing (11); Said silencing board (15) is installed in parallel between air inducing hole (12) and the aft-fan (13), offers some dislocation hole (16) on the silencing board (15).
3. the medium-sized gasoline engine generator group of double cylinder wind cooling according to claim 2 is characterized in that: centrifugal fan or back shaft flow blade (17) after said aft-fan (13) comprises at least two.
4. according to claim 2 or the medium-sized gasoline engine generator group of 3 described double cylinder wind coolings; It is characterized in that: said shell (1) comprises protecgulum (19), stator outer housing (20), bonnet (21) and the back fan housing (22) that sets gradually from front to back; Be connected through the some front and rear covers clamping bolts (23) that are positioned at stator outer housing (20) outside between protecgulum (19) and the bonnet (21); The front end of said protecgulum (19) offers and is suitable for the preceding through hole (24) that engine output shaft passes; Exhaust port (9) is positioned on protecgulum (19) sidewall before said, and Open Side Down, and the rear end of said back fan housing (22) offers and is suitable for the back through hole (25) that aft-fan axle (14) passes; Said rear air inlet (10) is positioned on fan housing (22) sidewall of back, and Open Side Down.
5. the medium-sized gasoline engine generator group of double cylinder wind cooling according to claim 4; It is characterized in that: be provided with the central shaft coaxial with it in the said central shaft (4) with fastening stay bolt (26), said central shaft with fastening stay bolt (26) with engine output shaft, central shaft (4) and aft-fan axle (14) three's axial restraint together.
6. the medium-sized gasoline engine generator group of double cylinder wind cooling according to claim 5 is characterized in that: the front end of said central shaft (4) axially offers taper axis hole (27), and said taper axis hole (27) is complementary with the taper spindle nose of engine output shaft.
7. the medium-sized gasoline engine generator group of double cylinder wind cooling according to claim 6; It is characterized in that: the front end of said aft-fan axle (14) is provided with male thread portion or female thread portion; The rear end of said central shaft (4) is provided with female thread portion corresponding with it or male thread portion, and said male thread portion matches with female thread portion and is connected;
The rear end of perhaps said central shaft (4) insert in the front end of aft-fan axle (14) and with its drive fit; The front end of said aft-fan axle (14) radially is provided with a pair of pin (28), and the inner of said pin (28) is arranged in groove or hole (29) of central shaft (4) outer surface.
8. the medium-sized gasoline engine generator group of double cylinder wind cooling according to claim 1; It is characterized in that: be in series with a shockproof bellows (48) respectively on the body of air outlet flues (45) on said two outlet pipes (46) are positioned at two; Two outlet pipes (46) are positioned on the body of noise reduction exhaust cavity (C) an one-level baffler (49) and two secondary bafflers (50) are installed; Said two outlet pipes (46) are installed on two suction ports of one-level baffler (49) relatively, and two secondary bafflers (50) are installed in respectively on two air outlets of one-level baffler (49).
9. the medium-sized gasoline engine generator group of double cylinder wind cooling according to claim 1; It is characterized in that: said primary air inlet (39) comprises some inlet holes; Wherein the part inlet hole is positioned on top cover (60) sidewall of noise reduction exhaust cavity (C) top, and the remaining part inlet hole is positioned at around on the outer casing of main air-inlet cavity (A) (33) sidewall or the diapire; Said exhaust port (42) down is positioned on the diapire of outer casing (33); Said intake grill (44) down is positioned on the sidewall of the outer casing (33) below the base plate (36).
10. the medium-sized gasoline engine generator group of double cylinder wind cooling according to claim 1; It is characterized in that: said top cover (60) is installed on the sidewall of outer casing (33) through hinge (51), between said fuel tank (34) bottom and the top board (35) pneumatic jack bar (52) is installed;
Said generator (31) and motor (30) are supported on the base plate (36) through the vibrationproof rubber cushion (53) of bottom;
Be pasted with the flame-retardant sponge of 20mm on the inwall of said outer casing (33); The upper surface of said top board (35) is pasted with the flame-retardant sponge of 6mm, and lower surface is pasted with the glass fibre of 8mm, the aluminium platinum of 0.2mm and the flame-retardant sponge of 6mm successively; Be pasted with the flame-retardant sponge of 6mm on the left and right surfaces of said right clapboard (38) respectively; Be pasted with the glass fibre of 8mm, the aluminium platinum of 0.2mm and the flame-retardant sponge of 6mm on the left and right surfaces of said left clapboard (37) respectively from inside to outside successively;
The universal wheels (55) that two big rubber tires (54) and two strap brakes are installed of said outer casing (33) bottom;
Pushing hands (56) is installed on the outer side wall of said outer casing (33);
Three openable side doors (57) are installed on the sidewall of said outer casing (33), lock and Stamping Steel Ribbon are installed between said side door (57) and top cover (60) and the outer casing (33);
Emergency stop switch (58) and tutorial light (59) are installed on the outer side wall of said outer casing (33).
CN2011100943331A 2011-04-13 2011-04-13 Medium-sized double-cylinder air cooling super-silent gasoline generator set Expired - Fee Related CN102192005B (en)

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CN102852621B (en) * 2012-10-12 2015-09-09 苏州晨浩动力设备有限公司 For air-cooled single cylinder gasoline, the diesel engine of low-noise generator group
CN102852620B (en) * 2012-10-12 2015-07-15 苏州晨浩动力设备有限公司 Air cooling double-cylinder gasoline and diesel engine for low noise generator set
CN102877938B (en) * 2012-10-12 2015-02-11 苏州晨浩动力设备有限公司 Air cooling, double-cylinder, dipolar and low-noise gasoline generating set
CN102852636B (en) * 2012-10-12 2015-02-11 苏州晨浩动力设备有限公司 Air-cooled single-cylinder dipolar low-noise petrol generating set
CN102877939B (en) * 2012-10-12 2015-02-11 苏州晨浩动力设备有限公司 Air-cooled double-cylinder two-pole low-noise diesel generating set
CN102852635B (en) * 2012-10-12 2015-05-13 苏州晨浩动力设备有限公司 Air-cooled single-cylinder (dipolar) low-noise diesel generating set
CN103939206A (en) * 2014-03-14 2014-07-23 江苏苏美达机电产业有限公司 Double-cylinder air-cooled mute gasoline engine generator unit

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CN202039946U (en) * 2011-04-13 2011-11-16 双悦(福建)动力机械有限公司 Double-cylinder air cooling medium-sized ultra silent gasoline generator set

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