WO2012139284A1 - 双排风式同步发电机及风冷超静音发电机组 - Google Patents

双排风式同步发电机及风冷超静音发电机组 Download PDF

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Publication number
WO2012139284A1
WO2012139284A1 PCT/CN2011/072706 CN2011072706W WO2012139284A1 WO 2012139284 A1 WO2012139284 A1 WO 2012139284A1 CN 2011072706 W CN2011072706 W CN 2011072706W WO 2012139284 A1 WO2012139284 A1 WO 2012139284A1
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WO
WIPO (PCT)
Prior art keywords
fan
air
exhaust
shaft
casing
Prior art date
Application number
PCT/CN2011/072706
Other languages
English (en)
French (fr)
Inventor
陈可庚
Original Assignee
双悦(福建)动力机械有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 双悦(福建)动力机械有限公司 filed Critical 双悦(福建)动力机械有限公司
Priority to PCT/CN2011/072706 priority Critical patent/WO2012139284A1/zh
Publication of WO2012139284A1 publication Critical patent/WO2012139284A1/zh

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K9/00Arrangements for cooling or ventilating
    • H02K9/02Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/207Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807Rotary generators
    • H02K7/1815Rotary generators structurally associated with reciprocating piston engines

Definitions

  • the present invention relates to a generator and a generator set, and more particularly to a generator and a generator set with a ventilation cooling system.
  • Medium and small diesel and gasoline generator sets mainly used in homes, hospitals, shops, schools, banks, military units, office buildings, communication devices, marine aquaculture, field operations, border posts, disaster relief, etc., for emergency and backup purposes.
  • Power supply versatile.
  • medium and small generator sets have not been effectively solved due to three major problems of temperature rise, noise and emissions.
  • Only open-type structural units have large noise, poor emissions, unsatisfactory results, and are inconvenient to meet customers.
  • Yiyi has high demand for unit quality. Due to the high operating temperature of the generator set, high noise, flammable and explosive fuel, high temperature vaporization and other factors, it restricts the technical upgrading and development of the product. So far, there is no high-quality, reliable, safe and practical ultra-quiet, low-efficiency generator set put on the market and recognized by customers.
  • the technical problem to be solved by the present invention is to provide a double exhaust type synchronous generator and an air-cooled ultra-quiet generator set which have low noise, effectively control temperature rise, and maintain original power.
  • the double exhaust type synchronous generator of the present invention comprises a casing, a stator, a rotor and a center shaft, the stator is fixedly mounted in the casing, the rotor is fixedly mounted on the central shaft, and the front end of the central shaft is used for the engine
  • the output shafts are connected, and the rear end of the central shaft is mounted on the rear of the outer casing through a bearing housing and a bearing disposed in the outer casing, wherein a front fan is fixedly mounted on the outer side of the front end of the central shaft, and the front fan has at least two pieces of front centrifugal a fan blade, a front exhaust vent corresponding to the front centrifugal fan blade is disposed on the front side wall of the outer casing, a rear air inlet is disposed on the rear side wall of the outer casing, and a wind is fixedly mounted on the rear end of the outer casing a casing, a plurality of air guiding holes are formed on a front side wall of the fan casing,
  • the double exhaust type synchronous generator of the present invention wherein the fan casing is provided with a plurality of mufflers, the muffler plate is installed in parallel between the air inlet hole and the rear fan, and the muffler plate is provided with a plurality of dislocations. hole.
  • the double exhaust type synchronous generator of the present invention wherein the rear fan comprises at least two rear centrifugal blades, and the rear side wall of the fan casing is provided with a rear exhaust corresponding to the position of the rear centrifugal vane mouth.
  • the double exhaust type homogenous generator of the present invention wherein the rear fan comprises at least two rear axial flow type blades, and the rear wall of the fan case is provided with a rear row corresponding to the rear axial flow type vane tuyere.
  • the double exhaust type coaxial generator of the present invention wherein the outer casing comprises a front cover and a stator outer cover which are arranged in order from front to back, a front cover and a rear hood, wherein the front cover and the rear cover are connected by a plurality of front and rear cover fastening bolts located outside the stator cover, and the front end of the front cover is provided with a front through hole adapted for the engine output shaft to pass through.
  • the front exhaust vent is located on the side wall of the front cover, and the opening is downward.
  • the rear end of the rear hood is provided with a rear through hole adapted for the rear fan shaft to pass through, and the rear air inlet is located on the side wall of the rear hood. , and the opening is downward.
  • the double exhaust type synchronous generator of the present invention wherein the central shaft is provided with a fastening long bolt for a central shaft coaxial with the central shaft, and the central shaft is fastened with a long bolt to connect the engine output shaft, the central shaft and the rear fan shaft The three are axially fixed together.
  • the front end of the center shaft is axially opened with a tapered shaft hole, and the tapered shaft hole is matched with the tapered shaft head of the engine output shaft.
  • the double exhaust type synchronous generator of the present invention wherein the front end of the rear fan shaft is provided with an externally threaded portion or an internally threaded portion, and the rear end of the central shaft is provided with an internal threaded portion or an externally threaded portion corresponding thereto, The externally threaded portion is mated with the internally threaded portion.
  • the double exhaust type synchronous generator of the present invention wherein the rear end of the central shaft is inserted into and tightly engaged with the front end of the rear fan shaft, and the front end of the rear fan shaft is radially provided with a pair of pins, the inside of the pin The end is located in a slot or hole in the outer surface of the central shaft.
  • the double exhaust type synchronous generator of the present invention wherein the frequency of the generator is 50 Hz or 60 Hz, the voltage is single phase 110V, 220 V, 230V or 240V, three-phase 380V, 400V, 416V or 440V, and the rated power is 2KVA ⁇ 25KVA.
  • the front double exhaust type synchronous generator of the present invention comprises an outer casing, a stator, a rotor and a central shaft, wherein the stator is fixedly mounted in the outer casing, and the rotor is fixedly mounted on the central shaft, and the front end of the central shaft is used for An output shaft of the engine is connected, and a rear end of the central shaft is mounted on a rear portion of the outer casing through a bearing housing and a bearing disposed in the outer casing, wherein a front fan and a rear fan are fixedly mounted outside the front end of the central shaft, and the front fan has At least two front centrifugal blades, the front side wall of the outer casing is provided with a front exhaust vent corresponding to the front centrifugal fan blade, and the front end cover of the outer casing is provided with a plurality of air guiding holes, and the rear fan has At least two rear centrifugal blades, the front side wall of the outer casing is provided with a rear exhaust vent corresponding to the rear centrifug
  • the front double exhaust type synchronous generator of the present invention wherein the outer casing comprises a front cover, a stator outer cover, a rear cover and a rear air cover which are arranged in order from front to rear, and the front cover and the rear cover pass between the outer cover of the stator cover a plurality of front and rear cover fastening bolts are connected, and a front through hole is formed at a front end of the front cover for the engine output shaft to pass through, and the front exhaust air outlet and the rear exhaust air outlet are located on the front cover side wall, and the opening is Next, the rear air inlet is located on the side wall of the rear hood, and the opening is downward.
  • the front double exhaust type synchronous generator of the present invention wherein the partition plate is fixedly connected to the central shaft, and the outer edge of the partition plate is slightly larger than the front centrifugal fan blade and the rear centrifugal fan blade, and the outer edge and the outer casing of the partition plate There is a gap between the inner walls.
  • the front double exhaust type synchronous generator of the present invention wherein the central shaft is provided with a fastening long bolt for a central shaft coaxial with the central shaft, and the central shaft is fastened with a long bolt to connect the engine output shaft and the central shaft shaft Fix together.
  • the front end of the central shaft has a tapered shaft hole in an open axial direction, and the tapered shaft hole is matched with a tapered shaft head of the engine output shaft.
  • the front double exhaust type synchronous generator of the invention wherein the frequency of the generator is 50 Hz or 60 Hz, the voltage single phase is 110V, 220V, 230V or 240V, the three phase is 380V, 400V, 416V or 440V, and the rated power is 2KVA ⁇ 25KVA.
  • the air-cooled ultra-quiet generator set of the present invention includes an engine and a generator, and further includes an inner box body and an outer box body, wherein the top cover of the outer box body is fixedly provided with a fuel tank, and the inner box body comprises a top board and a bottom board, a left partition plate and a right partition plate, the top plate is horizontally fixed under the oil tank, the bottom plate is horizontally fixed at a lower portion of the outer box body, and the left partition plate and the right partition plate are vertically fixed between the top plate and the bottom plate,
  • the space on the right side of the right partition communicates with the space above the top plate to form a main intake chamber A
  • the outer tank is provided with a main air inlet communicating with the main intake chamber A
  • the inner casing is internally configured.
  • the main working chamber B connects the main working chamber B with the main intake chamber A, and the space on the left side of the left partition plate constitutes the muffler exhaust chamber C, the outer box body
  • the lower part is provided with a main exhaust port communicating with the muffler exhaust chamber C,
  • the engine is an air-cooled engine, the engine is installed in the main working chamber B near the right partition, the cooling fan on the engine faces the main intake chamber A, and the generator is installed in the main working chamber B near the left partition.
  • the outside of the front exhaust vent on the generator is provided with a lower exhaust passage, and the lower exhaust passage communicates with the lower exhaust vent on the outer casing through the bottom plate, and the outside of the rear air inlet of the generator is provided with a lower air inlet, the lower air inlet is communicated with the lower air inlet on the outer box through the bottom plate, and the rear part of the fan shell of the generator passes through the through hole on the left partition and the sound absorbing exhaust
  • the cavity C is in communication, and the air guiding hole on the fan casing is in communication with the main working cavity B,
  • An upper exhaust passage is installed in the main working chamber B, one end of the upper exhaust passage corresponds to a fin portion on the cylinder block of the engine, and the other end of the upper exhaust passage is fixed to the left partition plate.
  • a through hole communicates with the muffler exhaust chamber C, and the exhaust pipe of the engine communicates with the exhaust pipe port at the lower portion of the outer casing through the upper exhaust passage and the muffler exhaust chamber C.
  • the air-cooled ultra-quiet generator set of the present invention wherein the fan casing is provided with a plurality of muffler partitions, the muffler baffles are installed in parallel between the air guiding holes and the rear fan, and the muffler partitions are provided with a plurality of misaligned holes. .
  • the air-cooled ultra-quiet generator set of the present invention wherein the rear fan comprises at least two rear centrifugal blades or rear axial blades.
  • the air-cooled ultra-quiet generator set of the present invention wherein the outer casing of the generator comprises a front cover, a stator outer cover, a rear cover and a rear air cover which are arranged in order from front to rear, and the front cover and the rear cover pass between the outer cover of the stator cover a plurality of front and rear cover fastening bolts are connected, the front end of the front cover is provided with a front through hole adapted for the engine output shaft to pass through, the front exhaust air outlet is located on the front cover side wall, and the opening is downward, the rear The rear end of the wind hood is provided with a rear through hole adapted to pass through the rear fan shaft, and the rear air inlet is located on the side wall of the rear hood, and the opening is downward.
  • the air-cooled ultra-quiet generator set of the present invention wherein the central shaft of the generator is provided with a fastening long bolt for a central shaft coaxial with the shaft, and the central shaft is fastened with a long bolt to the engine output shaft, the central shaft and the rear The fan shaft is axially fixed in one Start.
  • the front end of the central shaft is axially opened with a tapered shaft hole, and the tapered shaft hole is matched with the tapered shaft head of the engine output shaft.
  • the air-cooled ultra-quiet genset of the present invention wherein the front end of the rear fan shaft is provided with an externally threaded portion or an internally threaded portion, and the rear end of the central shaft is provided with an internal threaded portion or an externally threaded portion corresponding thereto, The threaded portion is mated with the internally threaded portion;
  • the air-cooled ultra-quiet generator set of the present invention wherein the rear end of the central shaft is inserted into and tightly engaged with the front end of the rear fan shaft, and the front end of the rear fan shaft is radially provided with a pair of pins, and the inner end of the pin is located The groove or hole in the outer surface of the center shaft.
  • the air-cooled ultra-quiet generator set of the present invention wherein the engine is a single-cylinder air-cooled engine.
  • the air-cooled ultra-quiet generator set of the present invention wherein the exhaust pipe is located on the pipe body in the upper exhaust passage, and the anti-vibration bellows is connected in series, and the exhaust pipe is located in the pipe body in the muffler exhaust cavity c, and a first-stage silencer is connected in series Secondary silencer.
  • the air-cooled ultra-quiet generator set of the present invention wherein the engine is a two-cylinder air-cooled engine.
  • the air-cooled ultra-quiet generator set of the present invention wherein the upper exhaust ducts are two, respectively corresponding to the fin portions on the two cylinders of the engine, and the two exhaust pipes of the engine pass through the two The inside of the exhaust passage and the muffler exhaust chamber c communicates with the exhaust pipe port at the lower portion of the outer casing.
  • the air-cooled ultra-quiet generator set of the present invention wherein the two exhaust pipes are respectively arranged in a tube body in two upper exhaust passages with an anti-vibration bellows in series, and the two exhaust pipes are located in the tube in the muffler exhaust chamber c
  • the body is equipped with a first-stage silencer and two secondary silencers.
  • the two exhaust pipes are oppositely mounted on the two air inlets of the first-stage silencer, and the two secondary silencers are respectively installed on the first-stage silencer. On the two air outlets of the device.
  • the air-cooled ultra-quiet generator set of the present invention wherein the main air inlet comprises a plurality of air inlet holes, wherein a part of the air inlet holes are located on the side wall of the top cover above the sound-absorbing exhaust chamber C, and the remaining part of the air inlet holes are located around the main entrance
  • the air-cooled ultra-quiet generator set of the present invention wherein the top cover is mounted on a side wall of the outer box body by a hinge, and an air ejector rod is installed between the bottom of the oil tank and the top plate.
  • the air-cooled ultra-quiet generator set of the present invention wherein the engine is a gasoline engine.
  • the air-cooled ultra-quiet generator set of the present invention wherein the engine is a diesel engine.
  • the air-cooled ultra-quiet generator set of the present invention wherein the generator and the engine are supported on the bottom plate by a vibration-proof rubber pad at the bottom.
  • the air-cooled ultra-quiet generator set of the present invention wherein the outer wall of the outer box is affixed with a 20 mm flame-retardant sponge; the upper surface of the top plate is attached with a flame-retardant sponge of 6 mm, and the lower surface is attached with 8 mm in turn.
  • the air-cooled ultra-quiet generator set of the invention has two large rubber wheels and two universal wheels with brakes installed at the bottom of the outer box body.
  • the air-cooled ultra-quiet generator set of the present invention wherein the outer side wall of the outer box body is provided with a pusher.
  • the air-cooled ultra-quiet generator set of the present invention wherein the side wall of the outer box body is provided with three openable side doors, and a lock and a sealing strip are installed between the side door and the top cover and the outer box body.
  • the air-cooled ultra-quiet generator set of the present invention wherein an emergency stop switch and an indicator light are mounted on an outer side wall of the outer box body.
  • the double exhaust type synchronous generator of the present invention is different from the prior art in that the double exhaust type synchronous generator of the present invention is respectively provided with a front fan and a rear fan at both ends of the central shaft, and a front exhaust port on the outer casing, The rear air inlet and the front fan form a cooling air duct in the generator casing.
  • the tuyere enters the outer casing, the cold air passes through the stator and the rotor from the back to the front, and then exits the outer casing from the front exhaust vent.
  • the fan casing and the rear fan constitute a cooling air duct outside the generator casing. Since the generator is in normal working, the outer surface of the casing also radiates heat outward, in order to make the generator have a good mute effect, it is required It is installed in a closed box, so the heat generated on the surface of the outer casing also needs to be discharged to the outside.
  • the rear fan also works with the central axis when the generator is working.
  • the air outside the generator casing enters the fan casing from the air inlet hole on the fan casing, and then is discharged outward from the rear of the fan casing.
  • the temperature rise outside the casing is also effectively controlled. Since the temperature rise is effectively controlled, the generator can also maintain a high power.
  • the front double exhaust type synchronous generator of the present invention is different from the prior art in that the front double exhaust type synchronous generator of the present invention is respectively provided with a front fan and a rear fan at the front end of the central shaft, and the rear of the outer casing
  • the exhaust vent, the rear air inlet and the rear fan constitute a cooling air duct in the generator casing.
  • the front fan, the air inlet and the front air outlet form a cooling air duct outside the generator casing. Since the generator is in normal operation, the outer surface of the outer casing also radiates heat outward, in order to make The generator has a good mute effect and needs to be installed in a closed box, so the heat generated on the surface of the outer casing also needs to be discharged outward.
  • the front fan When the front fan is working on the generator It also rotates with the rotation of the central shaft. Under the suction of the front fan, the air outside the generator casing enters the casing from the bow I through the front end cover of the casing, and then acts from the front exhaust port under the action of the front fan. It is discharged outward and the temperature rise outside the generator casing is also effectively controlled. Since the temperature rise is effectively controlled, the generator can also Maintain high power.
  • the air-cooled ultra-quiet generator set of the present invention divides the generator set into a main intake chamber A, a main working chamber B and a muffler exhaust chamber C by using an inner box and an outer box, and the engine and the generator are installed in the main working chamber B,
  • the cold air outside the outer casing enters the main intake cavity A from the main intake port on the casing, and the cooling fan on the engine draws a small portion of the cold air in the main intake cavity A into the cylinder of the engine.
  • the body portion is cooled, and the cooled air enters the muffler exhaust chamber C from the upper exhaust duct, and then the outer box body is discharged from the main exhaust port;
  • the generator has front and rear fans respectively mounted on both ends of the central shaft, and the outer casing
  • the upper exhaust vent, the rear air inlet and the front fan constitute a cooling air duct in the generator casing.
  • the cold air passes through the stator and the rotor from the back to the front, and then exits the outer casing through the front exhaust port.
  • the lower exhaust duct is discharged from the lower exhaust port at the lower part of the outer casing, and the continuous rise of the cold air in the generator casing enables the internal temperature rise of the generator to be effectively controlled; meanwhile, the fan casing and the rear fan constitute
  • the cooling air duct outside the generator casing because the outer surface of the outer casing is also radiating heat when the generator is in normal operation, the temperature of the main working chamber B is also increased, and the rear fan is working when the generator is working. It also rotates with the rotation of the central shaft.
  • a part of the intake holes of the main air inlet of the air-cooled ultra-quiet generator set of the present invention is located on the side wall of the top cover above the muffler exhaust chamber C.
  • a part of the cold air is taken from the air intake of the side wall of the top cover.
  • the hole enters and enters the main intake chamber A and the main working chamber B through a cavity between the lower tank and the top plate, thereby cooling the oil tank and suppressing high-temperature vaporization of the gasoline in the oil tank.
  • Figure 1 is a front cross-sectional view showing a double exhaust type homogenizing generator of the present invention
  • Figure 2 is a partial enlarged view of the portion I in Figure 1;
  • 3a is a first embodiment of a method for connecting a rear fan shaft and a central shaft of a generator in a double exhaust type synchronous generator according to the present invention
  • Figure 3b is a second embodiment of the connection mode between the rear fan shaft and the central shaft of the generator in the double exhaust type synchronous generator of the present invention
  • Figure 3c is a third embodiment of the connection mode between the rear fan shaft and the central shaft of the generator in the double exhaust type synchronous generator of the present invention
  • Figure 4 is a front cross-sectional view of the front double exhaust type homoelectric generator of the present invention.
  • Figure 5 is a front cross-sectional view showing the first embodiment of the air-cooled ultra-quiet generator set of the present invention
  • Figure 6 is a front cross-sectional view of the generator in the first embodiment of the air-cooled ultra-quiet generator set of the present invention
  • Figure 7 is a left side cross-sectional view (without wheels) of the first embodiment of the air-cooled ultra-quiet generator set of the present invention
  • Figure 8 is a rear view (without wheels) of the first embodiment of the air-cooled ultra-quiet generator set of the present invention ;
  • Figure 9 is a front view of the first embodiment of the air-cooled ultra-quiet generator set of the present invention (open top cover);
  • Figure 10 is a front cross-sectional view showing a second embodiment of the air-cooled ultra-quiet generator set of the present invention.
  • Figure 11 is a front cross-sectional view showing the generator of the second embodiment of the air-cooled ultra-quiet generator set of the present invention.
  • Figure 12 is a left side cross-sectional view (without wheels) of the second embodiment of the air-cooled ultra-quiet generator set of the present invention
  • Figure 13 is a right side view of the second embodiment of the air-cooled ultra-quiet generator set of the present invention (without wheels) ;
  • Figure 14 is a front elevational view (open top cover) of a second embodiment of the air-cooled ultra-quiet generator set of the present invention. detailed description
  • the double exhaust type synchronous generator of the present invention comprises a casing 1, a stator 2, a rotor 3 and a center shaft 4, and the casing 1 includes a front cover 19, a stator outer cover 20, and a rear cover 21 which are disposed in order from front to rear. And the rear hood 22, the front cover 19 and the rear cover 21 are connected by a plurality of front and rear cover fastening bolts 23 located outside the stator cover 20, and the front end of the front cover 19 is provided with a front through hole for the engine output shaft to pass through.
  • the stator 2 is fixedly mounted in the outer casing 1
  • the rotor 3 is fixedly mounted on the central shaft 4
  • the front end of the central shaft 4 is axially opened with a tapered shaft hole 27, the tapered shaft hole 27 and the tapered shaft head of the engine output shaft Matching, used to connect to the output shaft of the engine.
  • the rear end of the center shaft 4 is mounted on the rear of the casing 1 through a bearing housing 5 and a bearing 6 provided on the rear cover 21.
  • a front fan 7 is fixedly mounted outside the front end of the center shaft 4, and the front fan 7 has four front centrifugal winds.
  • the front side air outlet 9 corresponding to the front centrifugal fan blade 8 is disposed on the side wall of the front cover 19, and the opening is downward, and the rear air inlet port 10 is disposed on the side wall of the rear air hood 22, and the opening is under.
  • the fan casing 11 is fixed on the rear end of the rear hood 22 by bolts.
  • the front side wall of the fan casing 11 is provided with a plurality of air guiding holes 12, and the fan casing 11 is provided with a rear fan 13 and a rear fan 13
  • the front end of the rear fan shaft 14 is fixedly connected to the rear end of the center shaft 4 through the casing wall of the fan casing 11 and the rear hood 22.
  • the rear fan shaft 14 is coupled to the central shaft 4 as shown in FIG. 3a.
  • the front end of the rear fan shaft 14 is provided with an externally threaded portion, and the rear end of the central shaft 4 is provided with an internal thread portion and an externally threaded portion. Cooperating with the internal threaded part.
  • the central shaft 4 is provided with a fastening bolt 26 for the central shaft coaxial therewith, and the central shaft is inserted from the rear end of the central shaft 4 by fastening bolts 26, which are the engine output shaft, the central shaft 4 and the rear fan shaft 14
  • fastening bolts 26 which are the engine output shaft, the central shaft 4 and the rear fan shaft 14
  • the axes are fixed together.
  • the sound-damping partition 15 is provided with a plurality of misalignment holes 16 therein. These misaligned holes 16 allow the airflow to pass through and provide a certain blocking effect on the sound waves.
  • the rear fan 13 includes four rear centrifugal blades 17, and a rear exhaust port 18 corresponding to the position of the rear centrifugal blades 17 is disposed on the rear side wall of the fan casing 11.
  • the front fan 7 rotates together, and under the suction of the front fan 7, cold air enters the outer casing 1 from the rear air inlet 10, and the cold air passes from the rear to the front.
  • the outer casing is discharged from the front exhaust port 9, and as the cold air is continuously circulated in the generator casing 1, the temperature rise inside the generator is effectively controlled.
  • the fan casing 11 and the rear fan 13 constitute a cooling air duct outside the generator casing 1. Since the generator is in normal operation, the outer surface of the casing 1 also radiates heat outward, in order to make the generator better.
  • the mute effect needs to be installed in a closed box, so the heat generated on the surface of the outer casing 1 also needs to be discharged outward.
  • the rear fan 13 also rotates with the rotation of the central shaft 4 when the generator is in operation, after Under the suction of the fan 13, the air outside the generator casing 1 enters the fan casing 11 from the air guiding hole 12 on the fan casing 11, and then is discharged outward from the rear of the fan casing 11, to the generator casing. 1
  • the external temperature rise is also effectively controlled.
  • the rear fan may include four rear axial flow vanes, and the rear wall of the fan casing is provided with a rear exhaust port corresponding to the rear axial flow vane .
  • the rear fan shaft 14 and the central shaft 4 can be connected in another manner. As shown in FIG. 3b, the front end of the rear fan shaft 14 is provided with an internal thread portion, and the rear end of the central shaft 4 is provided with a male thread portion. The threaded portion is mated with the internally threaded portion. As shown in Fig.
  • the rear end of the center shaft 4 is inserted into and tightly fitted into the front end of the rear fan shaft 14, and the front end of the rear fan shaft 14 is radially provided with a pair of pins 28, and the inner end of the pin 28 is located on the outer surface of the center shaft 4. In the slot 29.
  • the frequency of the double exhaust type synchronous generator of the invention is 50 Hz or 60 Hz, the voltage single phase 110 ⁇ , 220 ⁇ , 230 ⁇ or 240 ⁇ , three-phase 380 V, 400 V, 416 V or 440 V, rated power 2 KVA ⁇ 25 KVA.
  • the front double exhaust synchronous generator of the present invention comprises a casing ⁇ , a stator 2', a rotor 3' and a central shaft 4', and the casing ⁇ includes a front cover 19' and a stator arranged in order from front to rear.
  • the outer cover 20', the rear cover 21' and the rear hood 22' are connected between the front cover 19' and the rear cover 21' by a plurality of front and rear cover fastening bolts 23' located outside the stator cover 20', the front cover 19'
  • the front end is provided with a front through hole 24' adapted to pass through the output shaft of the engine
  • the stator 2' is fixedly mounted in the outer casing
  • the rotor 3' is fixedly mounted on the central shaft 4'
  • the front end of the central shaft 4' is axially opened with a cone
  • the shaft hole 27', the tapered shaft hole 27' is matched with the tapered shaft head of the engine output shaft for connection with the output shaft of the engine.
  • the rear end of the center shaft 4' is mounted on the rear of the casing by a bearing housing 5' and a bearing 6' provided on the rear cover 21', and a front fan 7' and a rear fan 13' are fixedly mounted outside the front end of the center shaft 4'.
  • the front fan 7' has four front centrifugal blades 8', and the front cover 19' is provided with a front exhaust vent 9' corresponding to the front centrifugal fan blade 8', and the opening is downward, front
  • the top wall of the cover 19' is provided with a plurality of air guiding holes 12'.
  • the rear fan 13' has four rear centrifugal blades 17', and the front side wall of the front cover 19' is provided with a rear centrifugal fan blade 17'.
  • the rear hood 22' is provided with a rear air inlet 10' on its side wall, and the opening is downward.
  • a partition 15' is disposed between the front fan 7' and the rear fan 13', and the partition 15' is fixedly coupled to the central shaft 4'.
  • the outer edge of the partition 15' is slightly larger than the front centrifugal vane 8' and post-centrifuged.
  • the blade 17' has a gap between the outer edge of the partition 15' and the inner wall of the outer casing.
  • the partition 15' divides the outer casing into two cavities so that the flowing air driven by the front fan 7' and the rear fan 13' does not affect each other.
  • the central shaft 4' is provided with a central shaft fastening bolt 26' coaxial therewith, and the center shaft is inserted from the rear end of the central shaft 4' with a fastening bolt 26', which is an engine output shaft and a central shaft 4' shaft. Fix together.
  • the rear fan 13' rotates together, and under the suction of the rear fan 13', cold air enters the casing from the rear air inlet 10', and the cold air
  • the stator 2' and the rotor 3' are passed from the rear to the front, and the outer casing is discharged from the rear exhaust port 18'.
  • the front fan 7', the air inlet 12' and the front air outlet 9' constitute a cooling air duct outside the generator casing. Since the generator is in normal operation, the outer surface of the casing is also radiated outward.
  • the front fan 7' also works with the generator. Rotating work of the central shaft 4', under the suction of the front fan 7', the air outside the generator casing ⁇ enters the casing ⁇ from the plenum 12', and then the front vent 9' Exhaust, the temperature rise outside the generator casing is also effectively controlled.
  • a rear inlet duct 14' corresponding to the rear air inlet 10' is provided between the outer casing and the casing, and the front air outlet 9' Corresponding front exhaust duct 16', rear exhaust duct 25' corresponding to rear exhaust duct 18'.
  • the frequency of the front double exhaust synchronous generator of the invention is 50 Hz or 60 Hz
  • the voltage is single phase 110V, 220V, 230V or 240V
  • the rated power is 2KVA ⁇ 25KVA.
  • the air-cooled ultra-quiet generator set of the present invention includes an engine 30, a generator 31, an inner box 32 and an outer box 33, and a tank 34 is fixedly disposed in the top cover 60 of the outer box 33.
  • the inner box 32 includes a top plate 35, a bottom plate 36, a left partition plate 37 and a right partition plate 38.
  • the top plate 35 is horizontally fixed below the oil tank 34, and the bottom plate 36 is horizontally fixed to the lower portion of the outer casing 33, and the left partition plate 37 and the right partition plate 38 is vertically fixed between the top plate 35 and the bottom plate 36, and the space on the right side of the right partition plate 38 communicates with the space above the top plate 35 to form a main intake chamber A, and the outer box body 33 is open to be connected to the main intake chamber A.
  • Main air inlet 39 is provided to be connected to the main intake chamber A.
  • the inner casing 32 constitutes a main working chamber B, and the through hole formed in the right partition 38 connects the main working chamber B with the main intake chamber A, and the space on the left side of the left partition 37 constitutes a muffler exhaust chamber C, A main exhaust port 40 communicating with the muffler exhaust chamber C is opened at a lower portion of the casing 33.
  • the main intake port 39 includes a plurality of intake holes, wherein a portion of the intake holes are located on the side wall of the top cover 60 above the muffler exhaust chamber C, and the remaining portion of the intake holes are located on the side wall of the outer case 33 surrounding the main intake chamber A. Or on the bottom wall.
  • the generator 31 and the engine 30 are supported on the bottom plate 36 by the anti-vibration pad 53 at the bottom.
  • the anti-vibration pad 53 can reduce the vibration and noise of the main engine.
  • the engine 30 is a single-cylinder air-cooled gasoline engine, and the engine 30 is mounted close to the right partition 38.
  • the cooling fan on the engine 30 faces the main intake chamber A, and the generator 31 is installed in the main working chamber B near the left partition 37.
  • the generator 31 includes a casing 1, a stator 2, a rotor 3, and a center shaft 4, and the casing 1 includes a front cover 19, a stator outer cover 20, a rear cover 21, and a rear air hood 22 which are disposed in order from front to rear.
  • the front cover 19 and the rear cover 21 are connected by a plurality of front and rear cover fastening bolts 23 located outside the stator cover 20, and the front end of the front cover 19 is provided with a front through hole 24 adapted for the passage of the engine output shaft, and the stator 2 is fixedly mounted.
  • the rotor 3 is fixedly mounted on the central shaft 4, and the front end of the central shaft 4 is axially opened with a tapered shaft hole 27, and the tapered shaft hole 27 is matched with the tapered shaft head of the engine output shaft for The output shaft of the engine is connected.
  • the rear end of the center shaft 4 is mounted on the rear of the casing 1 through a bearing housing 5 and a bearing 6 provided on the rear cover 21.
  • a front fan 7 is fixedly mounted on the outer side of the front end of the center shaft 4, and the front fan 7 has four front centrifugal winds.
  • the front side of the front cover 19 is provided with a front exhaust vent 9 corresponding to the front centrifugal vane 8, and the outer side of the front exhaust vent 9 is provided with a lower exhaust passage 41 through which the lower exhaust passage 41 passes.
  • the bottom plate 36 communicates with the lower exhaust vent 42 on the outer casing 33, and the lower vent 42 is located on the bottom wall of the outer casing 33.
  • a rear air inlet 10 is disposed on a side wall of the rear air hood 22, and a lower air inlet 43 is disposed outside the rear air inlet 10, and the lower air inlet 43 communicates with the lower air inlet 44 of the outer casing 33 through the bottom plate 36.
  • the lower air inlet 44 is located on the side wall of the outer casing 33 below the bottom plate 36.
  • the fan casing 11 is fixedly fixed on the rear end of the rear hood 22 by bolts, and the rear portion of the fan casing 11 communicates with the muffler exhaust chamber C through the through hole on the left baffle plate 37, and the front of the fan casing 11
  • a plurality of air guiding holes 12 communicating with the main working chamber B are disposed on the side wall of the main portion
  • a rear fan 13 is disposed in the fan casing 11, and the rear fan 13 includes four rear axial flow blades 17 and the fan blade 17 adopts an ADC12. Cast aluminum fan blades or fiberglass plus nylon 66 injection fan blades.
  • the front end of the rear fan shaft 14 of the rear fan 13 is fixedly connected to the rear end of the center shaft 4 through the casing wall of the wind turbine casing 11 and the rear hood 22.
  • the rear fan shaft 14 is coupled to the central shaft 4 as shown in FIG. 3a.
  • the front end of the rear fan shaft 14 is provided with an externally threaded portion
  • the rear end of the central shaft 4 is provided with an internal thread portion and an externally threaded portion. Cooperating with the internal threaded part.
  • the central shaft 4 is provided with a fastening bolt 26 for the central shaft coaxial therewith, and the central shaft is inserted from the rear end of the central shaft 4 by fastening bolts 26, which are the engine output shaft, the central shaft 4 and the rear fan shaft 14
  • fastening bolts 26 which are the engine output shaft, the central shaft 4 and the rear fan shaft 14
  • the axes are fixed together.
  • the sound-damping partition 15 is provided with a plurality of misalignment holes 16 therein. These misaligned holes 16 allow the airflow to pass through and provide a certain blocking effect on the sound waves.
  • An upper exhaust passage 45 is installed in the main working chamber B.
  • One end of the upper exhaust passage 45 corresponds to a fin portion on the cylinder of the engine 30, and the other end of the upper exhaust passage 45 is fixed to the left partition plate 37.
  • the other through hole is in communication with the muffler exhaust chamber C.
  • the exhaust pipe 46 of the engine 30 communicates with the exhaust pipe port 47 at the lower portion of the outer casing 33 through the upper exhaust passage 45 and the muffler exhaust chamber C, and the exhaust pipe 46 is located at the upper exhaust passage.
  • An anti-vibration bellows 48 is connected in series with the tube body in 45, and a first-stage silencer 49 and a secondary silencer 50 are connected in series on the tube body of the exhaust pipe 46 in the muffler exhaust chamber C, and the surface of the muffler is coated with 600°.
  • the top cover 60 is mounted on the side wall of the outer box 33 via a hinge 51, and an air ejector rod 52 is mounted between the bottom of the oil tank 34 and the top plate 35, and the top cover 60 can be opened when needed.
  • the jack 52 supports the top cover 60.
  • Outside Two large rubber wheels 54 and two universal wheels 55 with brakes are mounted on the bottom of the casing 33.
  • the outer side wall of the outer casing 33 is provided with a pusher 56 for moving the entire generator set and parking it in a suitable Location.
  • Three openable side doors 57 are mounted on the side wall of the outer casing 33, and a lock is mounted between the side door 57 and the top cover 60 and the outer casing 33, at the joint surface of the side door 57 and the top cover 60 and the outer casing 33.
  • a 2mm thick sealing strip is installed, and the generator set can be maintained by opening the side door 57 or the top cover 60.
  • An emergency stop switch 58 and an indicator light 59 are mounted on the outer side wall of the outer casing 33.
  • a 20 mm flame-retardant sponge is attached to the inner wall of the outer casing 33; the upper surface of the top plate 35 is attached with a flame-retardant sponge of 6 mm, and the lower surface is sequentially 8mm glass fiber, 0.2mm aluminum platinum and 6mm flame retardant sponge are attached; 6mm flame retardant sponge is attached to the left and right surfaces of the right partition 38; left and right surfaces of the left partition 37 8 mm of glass fiber, 0.2 mm of aluminum platinum, and 6 mm of flame retardant sponge were attached from the inside to the outside.
  • the exhaust air volume of the rear fan 13 is greater than the heat dissipation amount and the heat exhaust capacity of the main engine 31, and the maximum intake air amount of the main air inlet 39 is greater than that of the engine 30.
  • the sum of the exhaust air volumes of the rear fan 13 is such that the entire generator set cabinet is thermally balanced.
  • the air-cooled ultra-quiet generator set of the present invention divides the generator set into a main intake chamber A, a main working chamber B and a muffler exhaust chamber C by using an inner box and an outer box, and the engine and the generator are installed in the main working chamber B,
  • the cold air outside the outer casing enters the main intake cavity A from the main intake port on the casing, and the cooling fan on the engine draws a small portion of the cold air in the main intake cavity A into the cylinder of the engine.
  • the body portion is cooled, and the cooled air enters the muffler exhaust chamber C from the upper exhaust duct, and then the outer box body is discharged from the main exhaust port;
  • the generator has front and rear fans respectively mounted on both ends of the central shaft, and the outer casing
  • the upper exhaust vent, the rear air inlet and the front fan constitute a cooling air duct in the generator casing.
  • the cold air passes through the stator and the rotor from the back to the front, and then exits the outer casing from the front exhaust port.
  • Air duct The lower exhaust port of the lower part of the outer casing is discharged, and the temperature rise inside the generator is effectively controlled as the cold air is continuously circulated in the generator casing; at the same time, the fan casing and the rear fan constitute the exterior of the generator casing.
  • the cooling air duct because the outer surface of the outer casing also radiates heat when the generator is working normally, the temperature of the main working chamber B also increases, and the rear fan also follows the central axis when the generator is working.
  • the rear fan can include four rear centrifugal blades, and the rear side wall of the fan casing is provided with a rear exhaust port corresponding to the rear centrifugal blade. .
  • the rear fan shaft 14 and the central shaft 4 can be connected in another manner. As shown in FIG.
  • the front end of the rear fan shaft 14 is provided with an internal thread portion, and the rear end of the central shaft 4 is provided with a male thread portion.
  • the threaded portion is mated with the internally threaded portion.
  • the rear end of the center shaft 4 is inserted into and tightly fitted into the front end of the rear fan shaft 14, and the front end of the rear fan shaft 14 is radially provided with a pair of pins 28, and the inner end of the pin 28 is located on the outer surface of the center shaft 4. In the slot 29.
  • the output frequency of the air-cooled ultra-quiet generator set of the invention is 50Hz or 60Hz
  • the voltage is single phase 110V, 220V, 230V or 240V, three-phase 380V, 400V, 416V or 440V
  • the rated power is 2KVA ⁇ 6KVA.
  • this generator set in addition to using gasoline as a fuel, natural gas, liquefied gas or a mixed fuel can also be used.
  • the air-cooled ultra-quiet generator set of the present invention comprises an engine 30, a generator 31, an inner casing 32 and an outer casing 33, and a fuel tank 34 is fixedly disposed in the top cover 60 of the outer casing 33.
  • the inner box 32 includes a top plate 35, a bottom plate 36, a left partition plate 37 and a right partition plate 38.
  • the top plate 35 is horizontally fixed below the oil tank 34, and the bottom plate 36 is horizontally fixed to the lower portion of the outer casing 33, and the left partition plate 37 and the right partition plate 38 is vertically fixed between the top plate 35 and the bottom plate 36, and the space on the right side of the right partition plate 38 communicates with the space above the top plate 35 to form a main intake chamber A, and the outer box body 33 is open to be connected to the main intake chamber A.
  • Main air inlet 39 is provided to be connected to the main intake chamber A.
  • the inner casing 32 constitutes a main working chamber B, and the through hole formed in the right partition 38 connects the main working chamber B with the main intake chamber A, and the space on the left side of the left partition 37 constitutes a muffler exhaust chamber C, A main exhaust port 40 communicating with the muffler exhaust chamber C is opened at a lower portion of the casing 33.
  • the main intake port 39 includes a plurality of intake holes, wherein a portion of the intake holes are located on the side wall of the top cover 60 above the muffler exhaust chamber C, and the remaining portion of the intake holes are located on the side wall of the outer case 33 surrounding the main intake chamber A. Or on the bottom wall.
  • the generator 31 and the engine 30 are supported on the bottom plate 36 through the anti-vibration pad 53 at the bottom.
  • the anti-vibration pad 53 can reduce the vibration and noise of the main engine.
  • the engine 30 is a two-cylinder air-cooled diesel engine, and the engine 30 is mounted close to the right partition 38.
  • the cooling fan on the engine 30 faces the main intake chamber A, and the generator 31 is installed in the main working chamber B near the left partition 37.
  • the generator 31 includes a casing 1, a stator 2, a rotor 3, and a center shaft 4, and the casing 1 includes a front cover 19, a stator outer cover 20, a rear cover 21, and a rear air hood 22 which are disposed in order from front to rear.
  • the front cover 19 and the rear cover 21 are connected by a plurality of front and rear cover fastening bolts 23 located outside the stator cover 20, and the front end of the front cover 19 is provided with a front through hole 24 adapted for the passage of the engine output shaft, and the stator 2 is fixedly mounted.
  • the rotor 3 is fixedly mounted on the central shaft 4, and the front end of the central shaft 4 is axially opened with a tapered shaft hole 27, and the tapered shaft hole 27 is matched with the tapered shaft head of the engine output shaft for The output shaft of the engine is connected.
  • the rear end of the center shaft 4 is mounted on the rear of the casing 1 through a bearing housing 5 and a bearing 6 provided on the rear cover 21.
  • a front fan 7 is fixedly mounted on the outer side of the front end of the center shaft 4, and the front fan 7 has four front centrifugal winds.
  • the front side of the front cover 19 is provided with a front exhaust vent 9 corresponding to the front centrifugal vane 8, and the outer side of the front exhaust vent 9 is provided with a lower exhaust passage 41 through which the lower exhaust passage 41 passes.
  • the bottom plate 36 communicates with the lower exhaust vent 42 on the outer casing 33, and the lower vent 42 is located on the bottom wall of the outer casing 33.
  • the rear hood 22 is provided with a rear air inlet 10 on the side wall thereof, and the rear air inlet 10 is provided with a lower entrance.
  • the air passage 43, the lower air inlet 43 communicates with the lower air inlet 44 on the outer casing 33 through the bottom plate 36, and the lower air inlet 44 is located on the side wall of the outer casing 33 below the bottom plate 36.
  • the fan casing 11 is fixedly fixed on the rear end of the rear hood 22 by bolts, and the rear portion of the fan casing 11 communicates with the muffler exhaust chamber C through the through hole on the left baffle plate 37, and the front of the fan casing 11
  • a plurality of air guiding holes 12 communicating with the main working chamber B are disposed on the side wall of the main portion
  • a rear fan 13 is disposed in the fan casing 11, and the rear fan 13 includes four rear axial flow blades 17 and the fan blade 17 adopts an ADC12. Cast aluminum fan blades or fiberglass plus nylon 66 injection fan blades.
  • the front end of the rear fan shaft 14 of the rear fan 13 is fixedly connected to the rear end of the center shaft 4 through the casing wall of the wind turbine casing 11 and the rear hood 22.
  • the rear fan shaft 14 is coupled to the central shaft 4 as shown in FIG. 3a.
  • the front end of the rear fan shaft 14 is provided with an externally threaded portion
  • the rear end of the central shaft 4 is provided with an internal thread portion and an externally threaded portion. Cooperating with the internal threaded part.
  • the central shaft 4 is provided with a fastening bolt 26 for the central shaft coaxial therewith, and the central shaft is inserted from the rear end of the central shaft 4 by fastening bolts 26, which are the engine output shaft, the central shaft 4 and the rear fan shaft 14
  • fastening bolts 26 which are the engine output shaft, the central shaft 4 and the rear fan shaft 14
  • the axes are fixed together.
  • the sound-damping partition 15 is provided with a plurality of misalignment holes 16 therein. These misaligned holes 16 allow the airflow to pass through and provide a certain blocking effect on the sound waves.
  • Two upper exhaust passages 45 are installed in the main working chamber B, and one ends of the two upper exhaust passages 45 respectively correspond to the fin portions on the two cylinders of the engine 30, and the other two upper exhaust passages 45 One end is respectively fixed to the other two through holes on the left partition plate 37, and communicates with the muffler exhaust chamber C.
  • the two exhaust pipes 46 of the engine 30 are respectively communicated with the exhaust pipe ports 47 at the lower portion of the outer casing 33 through the two upper exhaust passages 45 and the muffler exhaust chamber C, respectively.
  • the tube 46 is disposed in a line on the two upper exhaust passages 45 respectively with an anti-vibration bellows 48.
  • the two exhaust tubes 46 are disposed on the tube body in the muffler exhaust chamber C and are provided with a primary silencer 49'. And two secondary silencers 50', two exhaust pipes 46 are oppositely mounted on the two air inlets of the primary silencer 49', and two secondary silencers 50' are respectively connected to the primary silencer 49' On the two air outlets, the surface of the silencer is coated with a heat-resistant high-temperature paint of 600 ° C, in which a catalytic converter can be installed in the silencer according to the requirements of the discharge standard.
  • the top cover 60 is mounted on the side wall of the outer box 33 via a hinge 51, and an air ejector rod 52 is mounted between the bottom of the oil tank 34 and the top plate 35, and the top cover 60 can be opened when needed.
  • the jack 52 supports the top cover 60.
  • the bottom of the outer casing 33 is provided with two large rubber wheels 54 and two universal wheels 55 with brakes.
  • the outer side wall of the outer casing 33 is provided with a pusher 56 for moving the entire generator set and parking it in a suitable environment. The location.
  • Three openable side doors 57 are mounted on the side wall of the outer casing 33, and a lock is mounted between the side door 57 and the top cover 60 and the outer casing 33, at the joint surface of the side door 57 and the top cover 60 and the outer casing 33.
  • a 2mm thick sealing strip is installed, and the generator set can be maintained by opening the side door 57 or the top cover 60.
  • An emergency stop switch 58 and an indicator light 59 are mounted on the outer side wall of the outer casing 33.
  • a 20 mm flame-retardant sponge is attached to the inner wall of the outer casing 33; the upper surface of the top plate 35 is attached with a flame-retardant sponge of 6 mm, and the lower surface is sequentially Attached with 8mm glass Glass fiber, 0.2mm aluminum platinum and 6mm flame retardant sponge; 6mm flame retardant sponge is attached to the left and right surfaces of the right partition plate 38; the left and right surfaces of the left partition plate 37 are respectively inwardly and outwardly 8mm glass fiber, 0.2mm aluminum platinum and 6mm flame retardant sponge are attached.
  • the exhaust air volume of the rear fan 13 is greater than the heat dissipation amount and the heat exhaust capacity of the main engine 31, and the maximum intake air amount of the main air inlet 39 is greater than that of the engine 30.
  • the sum of the exhaust air volumes of the rear fan 13 is such that the entire generator set cabinet is thermally balanced.
  • the air-cooled ultra-quiet generator set of the present invention divides the generator set into a main intake chamber A, a main working chamber B and a muffler exhaust chamber C by using an inner box and an outer box, and the engine and the generator are installed in the main working chamber B,
  • the cold air outside the outer casing enters the main intake cavity A from the main intake port on the casing, and the cooling fan on the engine draws a small portion of the cold air in the main intake cavity A into the cylinder of the engine.
  • the body portion is cooled, and the cooled air enters the muffler exhaust chamber C from the upper exhaust duct, and then the outer box body is discharged from the main exhaust port;
  • the generator has front and rear fans respectively mounted on both ends of the central shaft, and the outer casing
  • the upper exhaust vent, the rear air inlet and the front fan constitute a cooling air duct in the generator casing.
  • the cold air passes through the stator and the rotor from the back to the front, and then exits the outer casing from the front exhaust port.
  • the exhaust duct is discharged from the lower exhaust port at the lower part of the outer casing, and the temperature rise inside the generator is effectively controlled as the cold air circulates continuously in the generator casing; at the same time, the fan casing and the rear fan constitute
  • the cooling air duct outside the generator casing because the outer surface of the outer casing also radiates heat when the generator is in normal operation, the temperature of the main working chamber B also rises, and the rear fan also works when the generator is working.
  • the central shaft rotates and rotates, most of the cold air in the main intake chamber A enters the main working chamber B under the suction of the rear fan, cooling the engine and the generator surface, and cooling the air. From the air inlet hole on the fan casing, enter the fan casing, then discharge into the muffler exhaust cavity C from the rear of the fan casing, and then discharge the outer casing from the main exhaust port to the outside of the generator casing.
  • the liter is also effectively controlled, and the measured temperature can be controlled within 45 ⁇ 50 °C.
  • the rear fan can include four rear centrifugal blades, and the rear side wall of the fan casing is provided with a rear exhaust port corresponding to the rear centrifugal blade.
  • the rear fan shaft 14 and the central shaft 4 can be connected in another manner. As shown in FIG. 3b, the front end of the rear fan shaft 14 is provided with an internal thread portion, and the rear end of the central shaft 4 is provided with a male thread portion. The threaded portion is mated with the internally threaded portion. As shown in Fig.
  • the rear end of the center shaft 4 is inserted into and tightly fitted into the front end of the rear fan shaft 14, and the front end of the rear fan shaft 14 is radially provided with a pair of pins 28, and the inner end of the pin 28 is located on the outer surface of the center shaft 4. In the slot 29.
  • the output frequency of the air-cooled ultra-quiet generator set of the invention is 50Hz or 60Hz, and the voltage single-phase 110V, 220V, 230V Or 240V, three-phase 380V, 400V 416V or 440V, rated power 8KVA ⁇ 25KVA.
  • the double exhaust type synchronous generator, the front double exhaust type synchronous generator and the air-cooled ultra-quiet generator set of the invention can simultaneously solve the problem of high temperature rise and high noise of the existing generator set, and therefore have great market prospects. And very strong industrial applicability.

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Description

双排风式同歩发电机及风冷超静音发电机组 技术领域
本发明涉及一种发电机及一种发电机组, 特别是涉及一种带有通风冷却系统的发电机及 发电机组。
背景技术
中、 小型的柴油、 汽油发电机组, 主要使用于家庭、 医院、 商店、 学校、 银行、 部队、 办公楼、 通讯装置、 海洋养殖、 野外作业、 边防哨所、 抢险救灾等场所, 用作应急、 备用电 源, 用途广泛。 现有市场上, 中、 小型发电机组, 因温升、 噪音、 排放三大问题未能有效解 决, 只有敞开式结构机组, 噪音大、 排放差、 使用效果不理想, 不方便, 未能满足客户曰益 对机组品质的高需求。 因发电机组工作温度高、 噪音大, 燃料易燃易爆, 高温汽化等因素的 综合影响, 制约了该产品的技术升级和发展。 目前为止没有一种优质、 可靠、 安全、 实用的 超静音, 冷却效果好的发电机组投放市场和被客户认可。
发明内容
本发明要解决的技术问题是提供一种噪音小, 有效控制温升, 保持原有功率的双排风式 同步发电机及风冷超静音发电机组。
本发明双排风式同步发电机, 包括外壳、 定子、 转子和中心轴, 所述定子固定安装在外 壳内, 所述转子固定安装在中心轴上, 所述中心轴的前端用于与发动机的输出轴相连接, 中 心轴的后端通过设置在外壳内的轴承座和轴承安装在外壳后部, 其中所述中心轴的前端外侧 固定安装有前风扇, 所述前风扇具有至少两片前离心式风叶, 所述外壳前部侧壁上设置有与 前离心式风叶相对应的前排风口, 所述外壳后部侧壁上设置有后进风口, 外壳的后端上固定 安装有风机壳, 所述风机壳的前部侧壁上开设有若干引风孔, 风机壳内设置有后风扇, 所述 后风扇的后风扇轴的前端穿过风机壳和外壳的壳壁与中心轴的后端固定连接。
本发明双排风式同步发电机, 其中所述风机壳内设置有若干块消音隔板, 所述消音隔板 平行安装在引风孔与后风扇之间, 消音隔板上开设有若干错位孔。
本发明双排风式同步发电机, 其中所述后风扇包括至少两片后离心式风叶, 所述风机壳 后部侧壁上设置有与后离心式风叶位置相对应的后排风口。
本发明双排风式同歩发电机, 其中所述后风扇包括至少两片后轴流式风叶, 所述风机壳 的后壁上设置有与后轴流式风叶相对应的后排风口。
本发明双排风式同歩发电机, 其中所述外壳包括由前至后依次设置的前盖、 定子外罩、 后盖和后风罩, 前盖与后盖之间通过位于定子外罩外侧的若干前后盖紧固螺栓相连接, 所述 前盖的前端开设有适于发动机输出轴穿过的前通孔, 所述前排风口位于前盖侧壁上, 且开口 向下, 所述后风罩的后端开设有适于后风扇轴穿过的后通孔, 所述后进风口位于后风罩侧壁 上, 且开口向下。
本发明双排风式同步发电机,其中所述中心轴内设置有与其同轴的中心轴用紧固长螺栓, 所述中心轴用紧固长螺栓将发动机输出轴、 中心轴和后风扇轴三者轴向固定在一起。
本发明双排风式同步发电机, 其中所述中心轴的前端轴向开设有锥形轴孔, 所述锥形轴 孔与发动机输出轴的锥形轴头相匹配。
本发明双排风式同步发电机,其中所述后风扇轴的前端设置有外螺纹部分或内螺纹部分, 所述中心轴的后端设置有与其对应的内螺纹部分或外螺纹部分, 所述外螺纹部分与内螺纹部 分相配合连接。
本发明双排风式同歩发电机, 其中所述中心轴的后端插入后风扇轴的前端内并与其紧配 合, 所述后风扇轴的前端径向设置有一对销钉, 所述销钉的内端位于中心轴外表面的槽或孔 中。
本发明双排风式同步发电机, 其中所述发电机的频率为 50Hz或 60Hz, 电压单相 110V、 220 V, 230V或 240V, 三相 380V、 400V、 416V或 440V, 额定功率 2KVA~25KVA。
本发明前置双排风式同步发电机, 包括外壳、 定子、 转子和中心轴, 所述定子固定安装 在外壳内,所述转子固定安装在中心轴上,所述中心轴的前端用于与发动机的输出轴相连接, 中心轴的后端通过设置在外壳内的轴承座和轴承安装在外壳后部, 其中所述中心轴的前端外 侧固定安装有前风扇和后风扇, 所述前风扇具有至少两片前离心式风叶, 所述外壳前部侧壁 上设置有与前离心式风叶相对应的前排风口, 外壳的前端盖上开设有若干引风孔, 所述后风 扇具有至少两片后离心式风叶, 所述外壳前部侧壁上设置有与后离心式风叶相对应的后排风 口, 所述外壳后部侧壁上设置有后进风口, 所述前风扇与后风扇之间设置有隔板。
本发明前置双排风式同步发电机, 其中所述外壳包括由前至后依次设置的前盖、 定子外 罩、 后盖和后风罩, 前盖与后盖之间通过位于定子外罩外侧的若干前后盖紧固螺栓相连接, 所述前盖的前端开设有适于发动机输出轴穿过的前通孔, 所述前排风口和后排风口位于前盖 侧壁上, 且开口向下, 所述后进风口位于后风罩侧壁上, 且开口向下。
本发明前置双排风式同步发电机, 其中所述隔板固定连接在中心轴上, 隔板的外缘略大 于前离心式风叶和后离心式风叶, 隔板的外缘与外壳的内壁之间留有间隙。
本发明前置双排风式同歩发电机, 其中所述中心轴内设置有与其同轴的中心轴用紧固长 螺栓, 所述中心轴用紧固长螺栓将发动机输出轴和中心轴轴向固定在一起。 本发明前置双排风式同步发电机, 其中所述中心轴的前端开轴向设有锥形轴孔, 所述锥 形轴孔与发动机输出轴的锥形轴头相匹配。
本发明前置双排风式同歩发电机, 其中所述发电机的频率为 50Hz或 60Hz, 电压单相 110V、 220V、 230V或 240V, 三相 380V、 400V、 416V或 440V, 额定功率 2KVA~25KVA。
本发明风冷超静音发电机组, 包括发动机和发电机, 其中还包括内箱体和外箱体, 所述 外箱体的顶盖内固定设置有油箱, 所述内箱体包括顶板、 底板、 左隔板和右隔板, 所述顶板 水平固定在油箱的下方, 所述底板水平固定在外箱体的下部, 所述左隔板与右隔板竖直固定 在顶板与底板之间, 所述右隔板右侧的空间与顶板上方的空间相连通构成主进气腔 A, 所述 外箱体上开设有与主进气腔 A相连通的主进气口, 所述内箱体内部构成主工作腔 B, 所述右 隔板上开设的通孔使主工作腔 B与主进气腔 A相连通,所述左隔板左侧的空间构成消音排气 腔 C, 所述外箱体下部开设有与消音排气腔 C相连通的主排气口,
所述发动机为风冷发动机, 发动机靠近右隔板安装在主工作腔 B内, 发动机上的冷却风 扇朝向主进气腔 A, 所述发电机靠近左隔板安装在主工作腔 B内, 所述发电机上的前排风口 的外部设置有下排气道, 所述下排气道穿过底板与外箱体上的下排风口相连通, 所述发电机 上的后进风口的外部设置有下进气道,所述下进气道穿过底板与外箱体上的下进风口相连通, 所述发电机的风机壳的后部穿过左隔板上的通孔与消音排气腔 C相连通, 所述风机壳上的引 风孔与主工作腔 B相连通,
所述主工作腔 B内安装有上排气道, 所述上排气道的一端与发动机的缸体上的散热片部 分相对应, 上排气道的另一端固定在左隔板上的另一通孔上, 与消音排气腔 C相连通, 所述 发动机的排气管通过上排气道和消音排气腔 C内部与外箱体下部的排气管口相连通。
本发明风冷超静音发电机组, 其中所述风机壳内设置有若干块消音隔板, 所述消音隔板 平行安装在引风孔与后风扇之间, 消音隔板上开设有若干错位孔。
本发明风冷超静音发电机组, 其中所述后风扇包括至少两片后离心式风叶或后轴流式风 叶。
本发明风冷超静音发电机组, 其中所述发电机的外壳包括由前至后依次设置的前盖、 定 子外罩、 后盖和后风罩, 前盖与后盖之间通过位于定子外罩外侧的若干前后盖紧固螺栓相连 接,所述前盖的前端开设有适于发动机输出轴穿过的前通孔,所述前排风口位于前盖侧壁上, 且开口向下, 所述后风罩的后端开设有适于后风扇轴穿过的后通孔, 所述后进风口位于后风 罩侧壁上, 且开口向下。
本发明风冷超静音发电机组, 其中所述发电机的中心轴内设置有与其同轴的中心轴用紧 固长螺栓, 所述中心轴用紧固长螺栓将发动机输出轴、 中心轴和后风扇轴三者轴向固定在一 起。
本发明风冷超静音发电机组, 其中所述中心轴的前端轴向开设有锥形轴孔, 所述锥形轴 孔与发动机输出轴的锥形轴头相匹配。
本发明风冷超静音发电机组,其中所述后风扇轴的前端设置有外螺纹部分或内螺纹部分, 所述中心轴的后端设置有与其对应的内螺纹部分或外螺纹部分, 所述外螺纹部分与内螺纹部 分相配合连接;
本发明风冷超静音发电机组, 其中所述中心轴的后端插入后风扇轴的前端内并与其紧配 合, 所述后风扇轴的前端径向设置有一对销钉, 所述销钉的内端位于中心轴外表面的槽或孔 中。
本发明风冷超静音发电机组, 其中所述发动机为单缸风冷发动机。
本发明风冷超静音发电机组, 其中所述排气管位于上排气道内的管体上串联有防震波纹 管, 排气管位于消音排气腔 c内的管体上串联有一级消音器和二级消音器。
本发明风冷超静音发电机组, 其中所述发动机为双缸风冷发动机。
本发明风冷超静音发电机组, 其中所述上排风道为两个, 分别与发动机的两个缸体上的 散热片部分相对应, 所述发动机的两个排气管分别通过两个上排气道和消音排气腔 c内部与 外箱体下部的排气管口相连通。
本发明风冷超静音发电机组, 其中所述两个排气管位于两个上排气道内的管体上分别串 联有一个防震波纹管, 两个排气管位于消音排气腔 c内的管体上安装有一个一级消音器和两 个二级消音器, 所述两个排气管相对安装在一级消音器的两个进气口上, 两个二级消音器分 别安装在一级消音器的两个出气口上。
本发明风冷超静音发电机组, 其中所述主进气口包括若干进气孔, 其中部分进气孔位于 消音排气腔 C上方的顶盖侧壁上,其余部分进气孔位于环绕主进气腔 A的外箱体侧壁或底壁 上; 所述下排风口位于外箱体的底壁上; 所述下进风口位于底板下方的外箱体的侧壁上。
本发明风冷超静音发电机组, 其中所述顶盖通过铰链安装在外箱体的侧壁上, 所述油箱 底部与顶板之间安装有气顶杆。
本发明风冷超静音发电机组, 其中所述发动机为汽油发动机。
本发明风冷超静音发电机组, 其中所述发动机为柴油发动机。
本发明风冷超静音发电机组, 其中所述发电机和发动机通过底部的防振胶垫支撑在底板 上。
本发明风冷超静音发电机组, 其中所述外箱体的内壁上贴附有 20mm的阻燃海绵; 所述 顶板的上表面贴附有 6mm的阻燃海绵, 下表面依次贴附有 8mm的玻璃纤维、 0.2mm的铝铂 和 6mm的阻燃海绵; 所述右隔板的左、 右表面上分别贴附有 6mm的阻燃海绵; 所述左隔板 的左、 右表面上分别由内向外依次贴附有 8mm的玻璃纤维、 0.2mm的铝铂和 6mm的阻燃海 绵。
本发明风冷超静音发电机组, 其中所述外箱体底部的安装有两个大胶轮和两个带刹车的 万向轮。
本发明风冷超静音发电机组, 其中所述外箱体的外侧壁上安装有推手。
本发明风冷超静音发电机组, 其中所述外箱体的侧壁上安装有三个可打开的边门, 所述 边门和顶盖与外箱体之间安装有锁和密封条。
本发明风冷超静音发电机组, 其中所述外箱体的外侧壁上安装有急停开关和指示灯。 本发明双排风式同歩发电机与现有技术不同之处在于本发明双排风式同步发电机在中心 轴的两端分别安装有前风扇和后风扇, 外壳上的前排风口、 后进风口和前风扇构成了发电机 外壳内的冷却风道, 当中心轴在发动机输出轴的带动下旋转时, 前风扇随之一起旋转工作, 在前风扇的抽吸作用下, 冷空气从后进风口进入外壳内, 冷空气由后至前通过定子和转子, 再从前排风口排出外壳, 随着冷空气在发电机外壳内的不断循环, 使发电机内部的温升得到 有效的控制; 同时, 风机壳和后风扇构成了发电机外壳外部的冷却风道, 由于发电机在正常 工作时, 其外壳的外表面也在向外散发热量, 为了使发电机具有较好的静音效果, 需要将其 安装在密闭的箱体内, 因此其外壳表面产生的热量也需要向外排放, 后风扇在发电机工作时 也随着中心轴的转动而旋转工作, 在后风扇的抽吸作用下, 发电机外壳外部的空气从风机壳 上的引风孔进入风机壳内, 然后从风机壳的后部向外排出, 对发电机外壳外部的温升也进行 了有效的控制。 由于温升得到了有效的控制, 发电机也能够保持较高的功率。
本发明前置双排风式同歩发电机与现有技术不同之处在于本发明前置双排风式同歩发电 机在中心轴的前端分别安装有前风扇和后风扇, 外壳上的后排风口、 后进风口和后风扇构成 了发电机外壳内的冷却风道, 当中心轴在发动机输出轴的带动下旋转时, 后风扇随之一起旋 转工作, 在后风扇的抽吸作用下, 冷空气从后进风口进入外壳内, 冷空气由后至前通过定子 和转子, 再从后排风口排出外壳, 随着冷空气在发电机外壳内的不断循环, 使发电机内部的 温升得到有效的控制; 同时, 前风扇、 引风孔和前排风口构成了发电机外壳外部的冷却风道, 由于发电机在正常工作时, 其外壳的外表面也在向外散发热量, 为了使发电机具有较好的静 音效果, 需要将其安装在密闭的箱体内, 因此其外壳表面产生的热量也需要向外排放, 前风 扇在发电机工作时也随着中心轴的转动而旋转工作, 在前风扇的抽吸作用下, 发电机外壳外 部的空气从外壳前端盖上的弓 I风孔进入外壳内, 然后在前风扇作用下从前排风口向外排出, 对发电机外壳外部的温升也进行了有效的控制。 由于温升得到了有效的控制, 发电机也能够 保持较高的功率。
本发明风冷超静音发电机组利用内箱体和外箱体将发电机组分隔成主进气腔 A、 主工作 腔 B和消音排气腔 C, 发动机和发电机安装在主工作腔 B内, 外箱体以外的冷空气从箱体上 的主进气口进入主进气腔 A内,发动机上的冷却风扇将主进气腔 A内的一小部分冷空气抽入 发动机内对发动机的缸体部分进行冷却, 冷却后的空气从上排风道进入消音排气腔 C, 然后 从主排气口排出外箱体; 发电机在中心轴的两端分别安装有前风扇和后风扇, 外壳上的前排 风口、 后进风口和前风扇构成了发电机外壳内的冷却风道, 当中心轴在发动机输出轴的带动 下旋转时, 前风扇随之一起旋转工作, 在前风扇的抽吸作用下, 冷空气从外箱体下部的下进 气口进入下进风道, 然后从后进风口进入外壳内, 冷空气由后至前通过定子和转子, 再从前 排风口排出外壳, 经过下排风道从外箱体下部的下排气口排出, 随着冷空气在发电机外壳内 的不断循环, 使发电机内部的温升得到有效的控制; 同时, 风机壳和后风扇构成了发电机外 壳外部的冷却风道, 由于发电机在正常工作时, 其外壳的外表面也在向外散发热量, 主工作 腔 B的温度也会随之升高, 后风扇在发电机工作时也随着中心轴的转动而旋转工作, 在后风 扇的抽吸作用下, 主进气腔 A内的大部分冷空气进入主工作腔 B内, 对发动机和发电机表面 进行冷却, 冷却后的空气从风机壳上的引风孔进入风机壳内, 然后从风机壳的后部排入消音 排气腔 C内, 再从主排气口排出外箱体, 对发电机外壳外部的温升也进行了有效的控制。 由 于采用上述的分腔风冷的冷却方式, 使发电机组的各部分都能得到有效的冷却, 又由于将发 动机和发电机安装在两层箱体内, 使发动机和发电机的噪音得到了有效的控制。
本发明风冷超静音发电机组中主进气口的部分进气孔位于消音排气腔 C上方的顶盖侧壁 上, 当发电机组工作时, 一部分冷空气从顶盖侧壁上的进气孔进入, 通过油箱下方和顶板之 间的空腔进入主进气腔 A和主工作腔 B内, 从而对油箱也进行了冷却, 抑制油箱内的汽油高温 汽化。
下面结合附图对本发明的双排风式同步发电机、 前置双排风式同步发电机和风冷超静音 发电机组作进一步说明。
附图说明
图 1为本发明双排风式同歩发电机的主视剖视图;
图 2为图 1中 I处的局部放大图;
图 3a为本发明双排风式同步发电机中发电机的后风扇轴与中心轴连接方式的第一种实 施例;
图 3b 为本发明双排风式同步发电机中发电机的后风扇轴与中心轴连接方式的第二种实 施例; 图 3c为本发明双排风式同步发电机中发电机的后风扇轴与中心轴连接方式的第三种实 施例;
图 4为本发明前置双排风式同歩发电机的主视剖视图;
图 5为本发明风冷超静音发电机组第一种实施方式的主视剖视图;
图 6为本发明风冷超静音发电机组第一种实施方式中发电机的主视剖视图;
图 7为本发明风冷超静音发电机组第一种实施方式的左视剖视图 (不带车轮); 图 8为本发明风冷超静音发电机组第一种实施方式的后视图 (不带车轮);
图 9为本发明风冷超静音发电机组第一种实施方式的主视图 (打开顶盖);
图 10为本发明风冷超静音发电机组第二种实施方式的主视剖视图;
图 11为本发明风冷超静音发电机组第二种实施方式中发电机的主视剖视图;
图 12为本发明风冷超静音发电机组第二种实施方式的左视剖视图 (不带车轮); 图 13为本发明风冷超静音发电机组第二种实施方式的右视图 (不带车轮);
图 14为本发明风冷超静音发电机组第二种实施方式的主视图 (打开顶盖)。 具体实施方式
如图 1所示, 本发明双排风式同步发电机包括外壳 1、 定子 2、 转子 3和中心轴 4, 外壳 1包括由前至后依次设置的前盖 19、 定子外罩 20、 后盖 21和后风罩 22, 前盖 19与后盖 21 之间通过位于定子外罩 20外侧的若干前后盖紧固螺栓 23相连接,前盖 19的前端开设有适于 发动机输出轴穿过的前通孔 24,定子 2固定安装在外壳 1内,转子 3固定安装在中心轴 4上, 中心轴 4的前端轴向开设有锥形轴孔 27, 锥形轴孔 27与发动机输出轴的锥形轴头相匹配, 用于与发动机的输出轴相连接。中心轴 4的后端通过设置在后盖 21上的轴承座 5和轴承 6安 装在外壳 1后部, 中心轴 4的前端外侧固定安装有前风扇 7, 前风扇 7具有四片前离心式风 叶 8, 前盖 19的侧壁上设置有与前离心式风叶 8相对应的前排风口 9, 且开口向下, 后风罩 22的侧壁上设置有后进风口 10, 且开口向下。
后风罩 22的后端上通过螺栓固定安装有风机壳 11, 风机壳 11的前部侧壁上开设有若干 引风孔 12, 风机壳 11内设置有后风扇 13, 后风扇 13的后风扇轴 14的前端穿过风机壳 11和 后风罩 22的壳壁与中心轴 4的后端固定连接。 在本实施方式中, 后风扇轴 14与中心轴 4的 连接方式如图 3a所示, 后风扇轴 14的前端设置有外螺纹部分, 中心轴 4的后端设置有内螺 纹部分, 外螺纹部分与内螺纹部分相配合连接。 中心轴 4内设置有与其同轴的中心轴用紧固 长螺栓 26, 中心轴用紧固长螺栓 26从中心轴 4的后端插入, 将发动机输出轴、 中心轴 4和 后风扇轴 14三者轴向固定在一起。 风机壳 11内设置有 3块消音隔板 15, 消音隔板 15平行安装在引风孔 12与后风扇 13之 间, 结合图 2所示, 消音隔板 15上开设有若干错位孔 16, 这些错位孔 16使气流能够通过, 而对声波起到一定的阻挡作用。 后风扇 13包括四片后离心式风叶 17, 风机壳 11后部侧壁上 设置有与后离心式风叶 17位置相对应的后排风口 18。
当中心轴 4在发动机输出轴的带动下旋转时, 前风扇 7随之一起旋转工作, 在前风扇 7 的抽吸作用下, 冷空气从后进风口 10进入外壳 1内, 冷空气由后至前通过定子 2和转子 3, 再从前排风口 9排出外壳, 随着冷空气在发电机外壳 1内的不断循环, 使发电机内部的温升 得到有效的控制。 同时, 风机壳 11和后风扇 13构成了发电机外壳 1外部的冷却风道, 由于 发电机在正常工作时, 其外壳 1的外表面也在向外散发热量, 为了使发电机具有较好的静音 效果, 需要将其安装在密闭的箱体内, 因此其外壳 1表面产生的热量也需要向外排放, 后风 扇 13在发电机工作时也随着中心轴 4的转动而旋转工作, 在后风扇 13的抽吸作用下, 发电 机外壳 1外部的空气从风机壳 11上的引风孔 12进入风机壳 11内, 然后从风机壳 11的后部 向外排出, 对发电机外壳 1外部的温升也进行了有效的控制。
在上述实施方式的基础上可以进行适当变形,例如: 后风扇可以包括四片后轴流式风叶, 风机壳的后壁上设置有与后轴流式风叶相对应的后排风口。后风扇轴 14与中心轴 4的连接方 式还可以采用另外两种方式, 如图 3b所示, 后风扇轴 14的前端设置有内螺纹部分, 中心轴 4的后端设置有外螺纹部分, 外螺纹部分与内螺纹部分相配合连接。 如图 3c所示, 中心轴 4 的后端插入后风扇轴 14的前端内并与其紧配合,后风扇轴 14的前端径向设置有一对销钉 28, 销钉 28的内端位于中心轴 4外表面的槽 29中。
本发明双排风式同步发电机的频率为 50Hz或 60Hz,电压单相 110¥、220¥、230¥或240¥, 三相 380V、 400V、 416V或 440V, 额定功率 2KVA~25KVA。
如图 4所示,本发明前置双排风式同步发电机包括外壳 Γ、定子 2'、转子 3 '和中心轴 4', 外壳 Γ包括由前至后依次设置的前盖 19'、 定子外罩 20'、 后盖 21 '和后风罩 22', 前盖 19'与 后盖 21 '之间通过位于定子外罩 20'外侧的若干前后盖紧固螺栓 23'相连接,前盖 19'的前端开 设有适于发动机输出轴穿过的前通孔 24', 定子 2'固定安装在外壳 Γ内, 转子 3'固定安装在 中心轴 4'上, 中心轴 4'的前端轴向开设有锥形轴孔 27', 锥形轴孔 27'与发动机输出轴的锥形 轴头相匹配, 用于与发动机的输出轴相连接。 中心轴 4'的后端通过设置在后盖 21 '上的轴承 座 5'和轴承 6'安装在外壳 Γ后部, 中心轴 4'的前端外侧固定安装有前风扇 7'和后风扇 13', 前风扇 7'具有四片前离心式风叶 8', 前盖 19'的侧壁上设置有与前离心式风叶 8'相对应的前 排风口 9', 且开口向下, 前盖 19'的顶壁上设置有若干引风孔 12'。
后风扇 13'具有四片后离心式风叶 17', 前盖 19'前部侧壁上设置有与后离心式风叶 17' 相对应的后排风口 18', 后风罩 22'的侧壁上设置有后进风口 10', 且开口向下。 前风扇 7'与 后风扇 13'之间设置有隔板 15', 隔板 15'固定连接在中心轴 4'上, 隔板 15'的外缘略大于前离 心式风叶 8'和后离心式风叶 17', 隔板 15'的外缘与外壳 Γ的内壁之间留有间隙。 隔板 15'将 外壳 Γ分隔成两个腔体, 使前风扇 7'和后风扇 13'驱动的流动空气不会相互影响。
中心轴 4'内设置有与其同轴的中心轴用紧固长螺栓 26', 中心轴用紧固长螺栓 26'从中心 轴 4'的后端插入, 将发动机输出轴和中心轴 4'轴向固定在一起。
当中心轴 4'在发动机输出轴的带动下旋转时, 后风扇 13'随之一起旋转工作, 在后风扇 13'的抽吸作用下, 冷空气从后进风口 10'进入外壳 Γ内, 冷空气由后至前通过定子 2'和转子 3', 再从后排风口 18'排出外壳, 随着冷空气在发电机外壳 Γ内的不断循环, 使发电机内部的 温升得到有效的控制。 同时, 前风扇 7'、 引风孔 12'和前排风口 9'构成了发电机外壳 Γ外部 的冷却风道, 由于发电机在正常工作时, 其外壳 Γ的外表面也在向外散发热量, 为了使发电 机具有较好的静音效果, 需要将其安装在密闭的箱体内, 因此其外壳 Γ表面产生的热量也需 要向箱体外排放, 前风扇 7'在发电机工作时也随着中心轴 4'的转动而旋转工作, 在前风扇 7' 的抽吸作用下, 发电机外壳 Γ外部的空气从引风孔 12'进入外壳 Γ内, 然后前排风口 9'的向 外排出, 对发电机外壳 Γ外部的温升也进行了有效的控制。 为了使冷空气便于进入外壳 1', 热空气便于排出箱体, 还要在外壳 Γ与箱体之间设置与后进风口 10'相对应的后进风道 14', 与前排风口 9'相对应的前排风道 16', 与后排风口 18'相对应的后排风道 25'。
本发明前置双排风式同步发电机的频率为 50Hz或 60Hz, 电压单相 110V、 220V、 230V 或 240V, 三相 380V、 400V 416V或 440V, 额定功率 2KVA~25KVA。
如图 5所示, 本发明风冷超静音发电机组包括发动机 30、 发电机 31、 内箱体 32和外箱 体 33, 外箱体 33的顶盖 60内固定设置有油箱 34。 内箱体 32包括顶板 35、底板 36、 左隔板 37和右隔板 38, 顶板 35水平固定在油箱 34的下方, 底板 36水平固定在外箱体 33的下部, 左隔板 37与右隔板 38竖直固定在顶板 35与底板 36之间, 右隔板 38右侧的空间与顶板 35 上方的空间相连通构成主进气腔 A,外箱体 33上开设有与主进气腔 A相连通的主进气口 39。 内箱体 32内部构成主工作腔 B,右隔板 38上开设的通孔使主工作腔 B与主进气腔 A相连通, 左隔板 37左侧的空间构成消音排气腔 C, 外箱体 33下部开设有与消音排气腔 C相连通的主 排气口 40。 主进气口 39包括若干进气孔, 其中部分进气孔位于消音排气腔 C上方的顶盖 60 侧壁上, 其余部分进气孔位于环绕主进气腔 A的外箱体 33侧壁或底壁上。 发电机 31和发动 机 30通过底部的防振胶垫 53支撑在底板 36上, 防振胶垫 53可以减少主机振动和噪音, 发 动机 30为单缸风冷汽油发动机, 发动机 30靠近右隔板 38安装在主工作腔 B内, 发动机 30 上的冷却风扇朝向主进气腔 A, 发电机 31靠近左隔板 37安装在主工作腔 B内。 结合图 6所示, 发电机 31包括外壳 1、 定子 2、 转子 3和中心轴 4, 外壳 1包括由前至 后依次设置的前盖 19、 定子外罩 20、 后盖 21和后风罩 22, 前盖 19与后盖 21之间通过位于 定子外罩 20外侧的若干前后盖紧固螺栓 23相连接,前盖 19的前端开设有适于发动机输出轴 穿过的前通孔 24, 定子 2固定安装在外壳 1内, 转子 3固定安装在中心轴 4上, 中心轴 4的 前端轴向开设有锥形轴孔 27, 锥形轴孔 27与发动机输出轴的锥形轴头相匹配, 用于与发动 机的输出轴相连接。 中心轴 4的后端通过设置在后盖 21上的轴承座 5和轴承 6安装在外壳 1 后部, 中心轴 4的前端外侧固定安装有前风扇 7, 前风扇 7具有四片前离心式风叶 8, 前盖 19的侧壁上设置有与前离心式风叶 8相对应的前排风口 9, 前排风口 9的外部设置有下排气 道 41, 下排气道 41穿过底板 36与外箱体 33上的下排风口 42相连通, 下排风口 42位于外 箱体 33的底壁上。 后风罩 22的侧壁上设置有后进风口 10, 后进风口 10的外部设置有下进 气道 43, 下进气道 43穿过底板 36与外箱体 33上的下进风口 44相连通, 下进风口 44位于 底板 36下方的外箱体 33的侧壁上。
后风罩 22的后端上通过螺栓固定安装有风机壳 11, 风机壳 11的后部穿过左隔板 37上 的通孔与消音排气腔 C相连通, 风机壳 11的前部侧壁上开设有若干与主工作腔 B相连通的 引风孔 12, 风机壳 11内设置有后风扇 13, 后风扇 13包括四片后轴流式风叶 17, 风叶 17采 用 ADC12铸铝风叶或玻璃纤维加尼龙 66注塑风叶。 后风扇 13的后风扇轴 14的前端穿过风 机壳 11和后风罩 22的壳壁与中心轴 4的后端固定连接。在本实施方式中, 后风扇轴 14与中 心轴 4的连接方式如图 3a所示, 后风扇轴 14的前端设置有外螺纹部分, 中心轴 4的后端设 置有内螺纹部分, 外螺纹部分与内螺纹部分相配合连接。 中心轴 4内设置有与其同轴的中心 轴用紧固长螺栓 26, 中心轴用紧固长螺栓 26从中心轴 4的后端插入, 将发动机输出轴、 中 心轴 4和后风扇轴 14三者轴向固定在一起。 风机壳 11内设置有 3块消音隔板 15, 消音隔板 15平行安装在引风孔 12与后风扇 13之间, 结合图 2所示, 消音隔板 15上开设有若干错位 孔 16, 这些错位孔 16使气流能够通过, 而对声波起到一定的阻挡作用。
主工作腔 B内安装有上排气道 45,上排气道 45的一端与发动机 30的缸体上的散热片部 分相对应,上排气道 45的另一端固定在左隔板 37上的另一通孔上,与消音排气腔 C相连通。 结合图 7所示, 发动机 30的排气管 46通过上排气道 45和消音排气腔 C内部与外箱体 33下 部的排气管口 47相连通, 排气管 46位于上排气道 45内的管体上串联有防震波纹管 48, 排 气管 46位于消音排气腔 C内的管体上串联有一级消音器 49和二级消音器 50,消音器的表面 涂覆有 600°C的耐热高温漆, 其中可以根据排放标准的要求在消音器内安装催化器。
如图 8和图 9所示, 顶盖 60通过铰链 51安装在外箱体 33的侧壁上, 油箱 34底部与顶 板 35之间安装有气顶杆 52, 需要时可以打开顶盖 60, 用气顶杆 52将顶盖 60支撑起来。 外 箱体 33底部的安装有两个大胶轮 54和两个带刹车的万向轮 55, 外箱体 33的外侧壁上安装 有推手 56, 便于移动整个发电机组, 并将其停放在适合的位置处。 外箱体 33的侧壁上安装 有三个可打开的边门 57,边门 57和顶盖 60与外箱体 33之间安装有锁,在边门 57和顶盖 60 与外箱体 33的结合面处安装有 2mm厚的密封条, 可以通过打开边门 57或顶盖 60对发电机 组进行维护。 外箱体 33的外侧壁上安装有急停开关 58和指示灯 59。
为了提高静音效果, 并且使各冷却腔的冷却效果不相互影响, 外箱体 33的内壁上贴附有 20mm的阻燃海绵; 顶板 35的上表面贴附有 6mm的阻燃海绵, 下表面依次贴附有 8mm的玻 璃纤维、 0.2mm的铝铂和 6mm的阻燃海绵; 右隔板 38的左、 右表面上分别贴附有 6mm的 阻燃海绵; 左隔板 37的左、 右表面上分别由内向外依次贴附有 8mm的玻璃纤维、 0.2mm的 铝铂和 6mm的阻燃海绵。
本发明风冷超静音发电机组中后风扇 13的排风量要大于发电机 31额定功率时的主机散 热量和排热量,主进气口 39的最大进气量要大于发动机 30内冷却风扇和后风扇 13的排风量 之和, 这样才能使整个发电机组的箱体内达到热平衡状态。
本发明风冷超静音发电机组利用内箱体和外箱体将发电机组分隔成主进气腔 A、 主工作 腔 B和消音排气腔 C, 发动机和发电机安装在主工作腔 B内, 外箱体以外的冷空气从箱体上 的主进气口进入主进气腔 A内,发动机上的冷却风扇将主进气腔 A内的一小部分冷空气抽入 发动机内对发动机的缸体部分进行冷却, 冷却后的空气从上排风道进入消音排气腔 C, 然后 从主排气口排出外箱体; 发电机在中心轴的两端分别安装有前风扇和后风扇, 外壳上的前排 风口、 后进风口和前风扇构成了发电机外壳内的冷却风道, 当中心轴在发动机输出轴的带动 下旋转时, 前风扇随之一起旋转工作, 在前风扇的抽吸作用下, 冷空气从外箱体下部的下进 气口进入下进风道, 然后从后进风口进入外壳内, 冷空气由后至前通过定子和转子, 再从前 排风口排出外壳, 经过下排风道从外箱体下部的下排气口排出, 随着冷空气在发电机外壳内 的不断循环, 使发电机内部的温升得到有效的控制; 同时, 风机壳和后风扇构成了发电机外 壳外部的冷却风道, 由于发电机在正常工作时, 其外壳的外表面也在向外散发热量, 主工作 腔 B的温度也会随之升高, 后风扇在发电机工作时也随着中心轴的转动而旋转工作, 在后风 扇的抽吸作用下, 主进气腔 A内的大部分冷空气进入主工作腔 B内, 对发动机和发电机表面 进行冷却, 冷却后的空气从风机壳上的引风孔进入风机壳内, 然后从风机壳的后部排入消音 排气腔 C内, 再从主排气口排出外箱体, 对发电机外壳外部的温升也进行了有效的控制, 实 测温度能够控制在 45~50°C以内。 由于釆用上述的分腔风冷的冷却方式, 使发电机组的各部 分都能得到有效的冷却, 又由于将发动机和发电机安装在两层箱体内, 使发动机和发电机的 噪音得到了有效的控制, 实测 Ί米处只有 60〜65分贝。 在上述实施方式的基础上可以进行适当变形,例如: 后风扇可以包括四片后离心式风叶, 风机壳的后部侧壁上设置有与后离心式风叶相对应的后排风口。后风扇轴 14与中心轴 4的连 接方式还可以采用另外两种方式, 如图 3b所示, 后风扇轴 14的前端设置有内螺纹部分, 中 心轴 4的后端设置有外螺纹部分, 外螺纹部分与内螺纹部分相配合连接。如图 3c所示, 中心 轴 4的后端插入后风扇轴 14的前端内并与其紧配合, 后风扇轴 14的前端径向设置有一对销 钉 28, 销钉 28的内端位于中心轴 4外表面的槽 29中。
本发明风冷超静音发电机组的输出频率为 50Hz或 60Hz, 电压单相 110V、 220V、 230V 或 240V, 三相 380V、 400V, 416V或 440V, 额定功率 2KVA~6KVA。 在该发电机组中, 除 了使用汽油作为燃料之外, 还可以使用天燃气、 液化气或者混合燃料。
如图 10所示, 本发明风冷超静音发电机组包括发动机 30、发电机 31、 内箱体 32和外箱 体 33, 外箱体 33的顶盖 60内固定设置有油箱 34。 内箱体 32包括顶板 35、底板 36、 左隔板 37和右隔板 38, 顶板 35水平固定在油箱 34的下方, 底板 36水平固定在外箱体 33的下部, 左隔板 37与右隔板 38竖直固定在顶板 35与底板 36之间, 右隔板 38右侧的空间与顶板 35 上方的空间相连通构成主进气腔 A,外箱体 33上开设有与主进气腔 A相连通的主进气口 39。 内箱体 32内部构成主工作腔 B,右隔板 38上开设的通孔使主工作腔 B与主进气腔 A相连通, 左隔板 37左侧的空间构成消音排气腔 C, 外箱体 33下部开设有与消音排气腔 C相连通的主 排气口 40。 主进气口 39包括若干进气孔, 其中部分进气孔位于消音排气腔 C上方的顶盖 60 侧壁上, 其余部分进气孔位于环绕主进气腔 A的外箱体 33侧壁或底壁上。 发电机 31和发动 机 30通过底部的防振胶垫 53支撑在底板 36上, 防振胶垫 53可以减少主机振动和噪音, 发 动机 30为双缸风冷柴油发动机, 发动机 30靠近右隔板 38安装在主工作腔 B内, 发动机 30 上的冷却风扇朝向主进气腔 A, 发电机 31靠近左隔板 37安装在主工作腔 B内。
结合图 11所示, 发电机 31包括外壳 1、 定子 2、 转子 3和中心轴 4, 外壳 1包括由前至 后依次设置的前盖 19、 定子外罩 20、 后盖 21和后风罩 22, 前盖 19与后盖 21之间通过位于 定子外罩 20外侧的若干前后盖紧固螺栓 23相连接,前盖 19的前端开设有适于发动机输出轴 穿过的前通孔 24, 定子 2固定安装在外壳 1内, 转子 3固定安装在中心轴 4上, 中心轴 4的 前端轴向开设有锥形轴孔 27, 锥形轴孔 27与发动机输出轴的锥形轴头相匹配, 用于与发动 机的输出轴相连接。 中心轴 4的后端通过设置在后盖 21上的轴承座 5和轴承 6安装在外壳 1 后部, 中心轴 4的前端外侧固定安装有前风扇 7, 前风扇 7具有四片前离心式风叶 8, 前盖 19的侧壁上设置有与前离心式风叶 8相对应的前排风口 9, 前排风口 9的外部设置有下排气 道 41, 下排气道 41穿过底板 36与外箱体 33上的下排风口 42相连通, 下排风口 42位于外 箱体 33的底壁上。 后风罩 22的侧壁上设置有后进风口 10, 后进风口 10的外部设置有下进 气道 43, 下进气道 43穿过底板 36与外箱体 33上的下进风口 44相连通, 下进风口 44位于 底板 36下方的外箱体 33的侧壁上。
后风罩 22的后端上通过螺栓固定安装有风机壳 11, 风机壳 11的后部穿过左隔板 37上 的通孔与消音排气腔 C相连通, 风机壳 11的前部侧壁上开设有若干与主工作腔 B相连通的 引风孔 12, 风机壳 11内设置有后风扇 13, 后风扇 13包括四片后轴流式风叶 17, 风叶 17采 用 ADC12铸铝风叶或玻璃纤维加尼龙 66注塑风叶。 后风扇 13的后风扇轴 14的前端穿过风 机壳 11和后风罩 22的壳壁与中心轴 4的后端固定连接。在本实施方式中, 后风扇轴 14与中 心轴 4的连接方式如图 3a所示, 后风扇轴 14的前端设置有外螺纹部分, 中心轴 4的后端设 置有内螺纹部分, 外螺纹部分与内螺纹部分相配合连接。 中心轴 4内设置有与其同轴的中心 轴用紧固长螺栓 26, 中心轴用紧固长螺栓 26从中心轴 4的后端插入, 将发动机输出轴、 中 心轴 4和后风扇轴 14三者轴向固定在一起。 风机壳 11内设置有 3块消音隔板 15, 消音隔板 15平行安装在引风孔 12与后风扇 13之间, 结合图 2所示, 消音隔板 15上开设有若干错位 孔 16, 这些错位孔 16使气流能够通过, 而对声波起到一定的阻挡作用。
主工作腔 B内安装有两个上排气道 45,两个上排气道 45的一端分别与发动机 30的两个 缸体上的散热片部分相对应, 两个上排气道 45的另一端分别固定在左隔板 37上的另外两个 通孔上, 与消音排气腔 C相连通。 结合图 12所示, 发动机 30的两个排气管 46分别通过两 个上排气道 45和消音排气腔 C内部与外箱体 33下部的排气管口 47相连通, 两个排气管 46 位于两个上排气道 45内的管体上分别串联有一个防震波纹管 48, 两个排气管 46位于消音排 气腔 C内的管体上安装有一个一级消音器 49'和两个二级消音器 50', 两个排气管 46相对安 装在一级消音器 49'的两个进气口上, 两个二级消音器 50'分别连接在一级消音器 49'的两个 出气口上, 消音器的表面涂覆有 600°C的耐热高温漆, 其中可以根据排放标准的要求在消音 器内安装催化器。
如图 13和图 14所示, 顶盖 60通过铰链 51安装在外箱体 33的侧壁上, 油箱 34底部与 顶板 35之间安装有气顶杆 52, 需要时可以打开顶盖 60, 用气顶杆 52将顶盖 60支撑起来。 外箱体 33底部的安装有两个大胶轮 54和两个带刹车的万向轮 55, 外箱体 33的外侧壁上安 装有推手 56, 便于移动整个发电机组, 并将其停放在适合的位置处。 外箱体 33 的侧壁上安 装有三个可打开的边门 57, 边门 57和顶盖 60与外箱体 33之间安装有锁, 在边门 57和顶盖 60与外箱体 33的结合面处安装有 2mm厚的密封条, 可以通过打开边门 57或顶盖 60对发电 机组进行维护。 外箱体 33的外侧壁上安装有急停开关 58和指示灯 59。
为了提高静音效果, 并且使各冷却腔的冷却效果不相互影响, 外箱体 33的内壁上贴附有 20mm的阻燃海绵; 顶板 35的上表面贴附有 6mm的阻燃海绵, 下表面依次贴附有 8mm的玻 璃纤维、 0.2mm的铝铂和 6mm的阻燃海绵; 右隔板 38的左、 右表面上分别贴附有 6mm的 阻燃海绵; 左隔板 37的左、 右表面上分别由内向外依次贴附有 8mm的玻璃纤维、 0.2mm的 铝铂和 6mm的阻燃海绵。
本发明风冷超静音发电机组中后风扇 13的排风量要大于发电机 31额定功率时的主机散 热量和排热量,主进气口 39的最大进气量要大于发动机 30内冷却风扇和后风扇 13的排风量 之和, 这样才能使整个发电机组的箱体内达到热平衡状态。
本发明风冷超静音发电机组利用内箱体和外箱体将发电机组分隔成主进气腔 A、 主工作 腔 B和消音排气腔 C, 发动机和发电机安装在主工作腔 B内, 外箱体以外的冷空气从箱体上 的主进气口进入主进气腔 A内,发动机上的冷却风扇将主进气腔 A内的一小部分冷空气抽入 发动机内对发动机的缸体部分进行冷却, 冷却后的空气从上排风道进入消音排气腔 C, 然后 从主排气口排出外箱体; 发电机在中心轴的两端分别安装有前风扇和后风扇, 外壳上的前排 风口、 后进风口和前风扇构成了发电机外壳内的冷却风道, 当中心轴在发动机输出轴的带动 下旋转时, 前风扇随之一起旋转工作, 在前风扇的抽吸作用下, 冷空气从外箱体下部的下进 气口进入下进风道, 然后从后进风口进入外壳内, 冷空气由后至前通过定子和转子, 再从前 排风口排出外壳, 经过下排风道从外箱体下部的下排气口排出, 随着冷空气在发电机外壳内 的不断循环, 使发电机内部的温升得到有效的控制; 同时, 风机壳和后风扇构成了发电机外 壳外部的冷却风道, 由于发电机在正常工作时, 其外壳的外表面也在向外散发热量, 主工作 腔 B的温度也会随之升高, 后风扇在发电机工作时也随着中心轴的转动而旋转工作, 在后风 扇的抽吸作用下, 主进气腔 A内的大部分冷空气进入主工作腔 B内, 对发动机和发电机表面 进行冷却, 冷却后的空气从风机壳上的引风孔进入风机壳内, 然后从风机壳的后部排入消音 排气腔 C内, 再从主排气口排出外箱体, 对发电机外壳外部的温升也进行了有效的控制, 实 测温度能够控制在 45〜50°C以内。 由于采用上述的分腔风冷的冷却方式, 使发电机组的各部 分都能得到有效的冷却, 又由于将发动机和发电机安装在两层箱体内, 使发动机和发电机的 噪音得到了有效的控制, 实测 7米处只有 60~65分贝。
在上述实施方式的基础上可以进行适当变形,例如: 后风扇可以包括四片后离心式风叶, 风机壳的后部侧壁上设置有与后离心式风叶相对应的后排风口。后风扇轴 14与中心轴 4的连 接方式还可以采用另外两种方式, 如图 3b所示, 后风扇轴 14的前端设置有内螺纹部分, 中 心轴 4的后端设置有外螺纹部分, 外螺纹部分与内螺纹部分相配合连接。如图 3c所示, 中心 轴 4的后端插入后风扇轴 14的前端内并与其紧配合, 后风扇轴 14的前端径向设置有一对销 钉 28, 销钉 28的内端位于中心轴 4外表面的槽 29中。
本发明风冷超静音发电机组的输出频率为 50Hz或 60Hz, 电压单相 110V、 220V、 230V 或 240V, 三相 380V、 400V 416V或 440V, 额定功率 8KVA~25KVA。
以上所述的实施例仅仅是对本发明的优选实施方式进行描述, 并非对本发明的范围进行 限定, 在不脱离本发明设计精神的前提下, 本领域普通技术人员对本发明的技术方案作出的 各种变形和改进, 均应落入本发明权利要求书确定的保护范围内。
工业实用性
本发明双排风式同步发电机、 前置双排风式同步发电机和风冷超静音发电机组能够同时 解决现有发电机组中温升高和噪音大的问题,因此具有很大的市场前景和很强的工业实用性。

Claims

1、 一种双排风式同步发电机, 包括外壳 (1)、 定子 (2)、 转子 (3)和中心轴 (4), 所 述定子 (2) 固定安装在外壳 (1) 内, 所述转子 (3) 固定安装在中心轴 (4) 上, 所述中心 轴 (4) 的前端用于与发动机的输出轴相连接, 中心轴 (4) 的后端通过设置在外壳(1) 内的 轴承座 (5) 和轴承 (6) 安装在外壳 (1)后部, 其特征在于: 所述中心轴 (4) 的前端外侧 固定安装有前风扇 (7), 所述前风扇 (7) 具有至少两片前离心式风叶 (8), 所述外壳 (1) 前部侧壁上设置有与前离心式风叶 (8) 相对应的前排风口 (9), 所述外壳 (1) 后部侧壁上 设置有后进风口 (10), 外壳(1) 的后端上固定安装有风机壳(11), 所述风机壳(11) 的前 部侧壁上开设有若干引风孔 (12), 风机壳 (11) 内设置有后风扇 (13), 所述后风扇 (13) 的后风扇轴 (14) 的前端穿过风机壳 (11)和外壳 (1) 的壳壁与中心轴 (4) 的后端固定连 接。
2、 根据权利要求 1所述的双排风式同步发电机, 其特征在于: 所述风机壳(11) 内设置 有若干块消音隔板(15), 所述消音隔板(15)平行安装在引风孔(12)与后风扇(13)之间, 消音隔板 (15) 上开设有若干错位孔 (16)。
3、 根据权利要求 2所述的双排风式同步发电机, 其特征在于: 所述后风扇 (13)包括至 少两片后离心式风叶(17), 所述风机壳(11)后部侧壁上设置有与后离心式风叶(17)位置 相对应的后排风口 (18)。
4、 根据权利要求 2所述的双排风式同步发电机, 其特征在于: 所述后风扇 (13)包括至 少两片后轴流式风叶, 所述风机壳(11)的后壁上设置有与后轴流式风叶相对应的后排风口。
5、 根据权利要求 3或 4所述的双排风式同步发电机, 其特征在于: 所述外壳 (1)包括 由前至后依次设置的前盖(19)、 定子外罩(20)、 后盖(21)和后风罩(22), 前盖(19) 与 后盖 (21)之间通过位于定子外罩 (20) 外侧的若干前后盖紧固螺栓 (23) 相连接, 所述前 盖 (19) 的前端开设有适于发动机输出轴穿过的前通孔 (24), 所述前排风口 (9)位于前盖
(19)侧壁上, 且开口向下, 所述后风罩 (22) 的后端开设有适于后风扇轴 (14) 穿过的后 通孔 (25), 所述后进风口 (10)位于后风罩 (22)侧壁上, 且开口向下。
6、 根据权利要求 5所述的双排风式同步发电机, 其特征在于: 所述中心轴 (4) 内设置 有与其同轴的中心轴用紧固长螺栓 (26), 所述中心轴用紧固长螺栓 (26)将发动机输出轴、 中心轴 (4) 和后风扇轴 (14) 三者轴向固定在一起。
7、 根据权利要求 6所述的双排风式同步发电机, 其特征在于: 所述中心轴 (4) 的前端 轴向开设有锥形轴孔 (27), 所述锥形轴孔 (27) 与发动机输出轴的锥形轴头相匹配。
8、 根据权利要求 7所述的双排风式同步发电机, 其特征在于: 所述后风扇轴(14) 的前 端设置有外螺纹部分或内螺纹部分, 所述中心轴(4)的后端设置有与其对应的内螺纹部分或 外螺纹部分, 所述外螺纹部分与内螺纹部分相配合连接。
9、 根据权利要求 7所述的双排风式同步发电机, 其特征在于: 所述中心轴 (4) 的后端 插入后风扇轴 (14) 的前端内并与其紧配合, 所述后风扇轴 (14) 的前端径向设置有一对销 钉 (28), 所述销钉 (28) 的内端位于中心轴 (4) 外表面的槽或孔 (29) 中。
10、 根据权利要求 8或 9所述的双排风式同步发电机, 其特征在于: 所述发电机的频率 为 50Hz或 60Hz, 电压单相 110V、 220V、 230V或 240V, 三相 380V、 400V 416V或 440V, 额定功率 2KVA~25KVA。
11、一种前置双排风式同步发电机,包括外壳(Γ)、定子(2')、转子(3')和中心轴(4'), 所述定子 (2') 固定安装在外壳 (Γ) 内, 所述转子 (3') 固定安装在中心轴 (4,)上, 所述 中心轴(4')的前端用于与发动机的输出轴相连接, 中心轴(4')的后端通过设置在外壳(Γ) 内的轴承座 (5')和轴承 (6') 安装在外壳 (Γ)后部, 其特征在于: 所述中心轴 (4') 的前 端外侧固定安装有前风扇 (7')和后风扇 (13'), 所述前风扇 (7')具有至少两片前离心式风 叶 (8'), 所述外壳 (1') 前部侧壁上设置有与前离心式风叶 (8')相对应的前排风口 (9'), 外壳 (Γ) 的前端盖上开设有若干引风孔 (12'), 所述后风扇 (13') 具有至少两片后离心式 风叶 ( 17,),所述外壳 (1')前部侧壁上设置有与后离心式风叶 ( 17')相对应的后排风口( 18,), 所述外壳 (Γ) 后部侧壁上设置有后进风口 (10'), 所述前风扇 (7') 与后风扇 (13') 之间 设置有隔板 (15')。
12、 根据权利要求 11所述的前置双排风式同歩发电机, 其特征在于: 所述外壳(Γ)包 括由前至后依次设置的前盖(19')、定子外罩(20')、后盖(2Γ)和后风罩(22'), 前盖(19') 与后盖 (2Γ) 之间通过位于定子外罩 (20') 外侧的若干前后盖紧固螺栓 (23') 相连接, 所 述前盖 (19') 的前端开设有适于发动机输出轴穿过的前通孔 (24' ), 所述前排风口 (9') 和 后排风口(18')位于前盖(19')侧壁上,且开口向下,所述后进风口(10')位于后风罩(22' ) 侧壁上, 且开口向下。
13、 根据权利要求 11所述的前置双排风式同步发电机, 其特征在于: 所述隔板 (15') 固定连接在中心轴 (4') 上, 隔板 (15') 的外缘略大于前离心式风叶 (8') 和后离心式风叶
(17'), 隔板 (15') 的外缘与外壳 (Γ) 的内壁之间留有间隙。
14、 根据权利要求 11至 13所述之一的前置双排风式同歩发电机, 其特征在于: 所述中 心轴(4') 内设置有与其同轴的中心轴用紧固长螺栓(26'), 所述中心轴用紧固长螺栓(26') 将发动机输出轴和中心轴 (4')轴向固定在一起。
15、 根据权利要求 14所述的前置双排风式同步发电机, 其特征在于: 所述中心轴 (4') 的前端开轴向设有锥形轴孔(27' ), 所述锥形轴孔(27' )与发动机输出轴的锥形轴头相匹配。
16、根据权利要求 15所述的前置双排风式同歩发电机, 其特征在于: 所述发电机的频率 为 50Hz或 60Hz, 电压单相 110V、 220V、 230V或 240V, 三相 380V、 400V、 416V或 440V, 额定功率 2KVA~25KVA。
17、 一种风冷超静音发电机组, 包括发动机 (30) 和如权利要求 1所述的发电机 (31), 其特征在于: 还包括内箱体(32)和外箱体(33), 所述外箱体(33) 的顶盖(60) 内固定设 置有油箱(34), 所述内箱体(32)包括顶板(35)、底板(36)、左隔板(37)和右隔板(38), 所述顶板 (35) 水平固定在油箱 (34) 的下方, 所述底板 (36)水平固定在外箱体 (33) 的 下部, 所述左隔板 (37) 与右隔板 (38) 竖直固定在顶板 (35) 与底板 (36)之间, 所述右 隔板 (38)右侧的空间与顶板 (35) 上方的空间相连通构成主进气腔 A, 所述外箱体 (33) 上开设有与主进气腔 A相连通的主进气口 (39), 所述内箱体(32) 内部构成主工作腔 B, 所 述右隔板(38)上开设的通孔使主工作腔 B与主进气腔 A相连通, 所述左隔板(37)左侧的 空间构成消音排气腔 C,所述外箱体 (33)下部开设有与消音排气腔 C相连通的主排气口(40), 所述发动机(30)为风冷发动机, 发动机(30)靠近右隔板(38)安装在主工作腔 B内, 发动机 (30) 上的冷却风扇朝向主进气腔 A, 所述发电机 (31)靠近左隔板 (37) 安装在主 工作腔 B内, 所述发电机 (31) 上的前排风口 (9) 的外部设置有下排气道 (41), 所述下排 气道 (41) 穿过底板 (36) 与外箱体 (33) 上的下排风口 (42)相连通, 所述发电机 (31) 上的后进风口 (10) 的外部设置有下进气道(43), 所述下进气道(43) 穿过底板(36)与外 箱体 (33) 上的下进风口 (44) 相连通, 所述发电机 (31) 的风机壳 (11) 的后部穿过左隔 板 (37) 上的通孔与消音排气腔 C相连通, 所述风机壳 (11) 上的引风孔 (12) 与主工作腔 B相连通,
所述主工作腔 B 内安装有上排气道 (45), 所述上排气道 (45) 的一端与发动机 (30) 的缸体上的散热片部分相对应, 上排气道 (45) 的另一端固定在左隔板 (37) 上的另一通孔 上, 与消音排气腔 C相连通, 所述发动机 (30) 的排气管 (46)通过上排气道 (45) 和消音 排气腔 C内部与外箱体 (33) 下部的排气管口 (47) 相连通。
18、 根据权利要求 17所述的风冷超静音发电机组, 其特征在于: 所述风机壳(11) 内设 置有若干块消音隔板(15), 所述消音隔板(15)平行安装在引风孔(12) 与后风扇 (13)之 间, 消音隔板 (15) 上开设有若干错位孔 (16)。
19、 根据权利要求 18所述的风冷超静音发电机组, 其特征在于: 所述后风扇 (13)包括 至少两片后离心式风叶或后轴流式风叶 (17)。
20、 根据权利要求 18或 19所述的风冷超静音发电机组, 其特征在于: 所述发电机(31 ) 的外壳(1 )包括由前至后依次设置的前盖(19)、定子外罩(20)、后盖(21 )和后风罩(22), 前盖 (19) 与后盖 (21 )之间通过位于定子外罩 (20)外侧的若干前后盖紧固螺栓 (23 ) 相 连接,所述前盖(19)的前端开设有适于发动机输出轴穿过的前通孔(24),所述前排风口(9) 位于前盖 (19) 侧壁上, 且开口向下, 所述后风罩 (22) 的后端开设有适于后风扇轴 (14) 穿过的后通孔 (25), 所述后进风口 (10)位于后风罩 (22)侧壁上, 且开口向下。
21、 根据权利要求 20所述的风冷超静音发电机组, 其特征在于: 所述发电机(31 ) 的中 心轴 (4) 内设置有与其同轴的中心轴用紧固长螺栓 (26), 所述中心轴用紧固长螺栓 (26) 将发动机输出轴、 中心轴 (4) 和后风扇轴 (14) 三者轴向固定在一起。
22、 根据权利要求 21所述的风冷超静音发电机组, 其特征在于: 所述中心轴 (4) 的前 端轴向开设有锥形轴孔 (27), 所述锥形轴孔 (27) 与发动机输出轴的锥形轴头相匹配。
23、 根据权利要求 22所述的风冷超静音发电机组, 其特征在于: 所述后风扇轴 (14) 的 前端设置有外螺纹部分或内螺纹部分, 所述中心轴(4)的后端设置有与其对应的内螺纹部分 或外螺纹部分, 所述外螺纹部分与内螺纹部分相配合连接;
24、 根据权利要求 22所述的风冷超静音发电机组, 其特征在于: 所述中心轴 (4) 的后 端插入后风扇轴 (14) 的前端内并与其紧配合, 所述后风扇轴 (14) 的前端径向设置有一对 销钉 (28), 所述销钉 (28 ) 的内端位于中心轴 (4)外表面的槽或孔 (29) 中。
25、 根据权利要求 17所述的风冷超静音发电机组, 其特征在于: 所述发动机(30)为单 缸风冷发动机。
26、 根据权利要求 25所述的风冷超静音发电机组, 其特征在于: 所述排气管(46)位于 上排气道 (45 ) 内的管体上串联有防震波纹管 (48), 排气管 (46) 位于消音排气腔 C 内的 管体上串联有一级消音器 (49) 和二级消音器 (50)。
27、 根据权利要求 17所述的风冷超静音发电机组, 其特征在于: 所述发动机(30)为双 缸风冷发动机。
28、 根据权利要求 27所述的风冷超静音发电机组, 其特征在于: 所述上排风道(45 )为 两个, 分别与发动机 (30) 的两个缸体上的散热片部分相对应, 所述发动机 (30) 的两个排 气管 (46) 分别通过两个上排气道 (45 ) 和消音排气腔 C内部与外箱体 (33 ) 下部的排气管 口 (47) 相连通。
29、 根据权利要求 28所述的风冷超静音发电机组, 其特征在于: 所述两个排气管 (46) 位于两个上排气道(45 ) 内的管体上分别串联有一个防震波纹管(48), 两个排气管(46)位 于消音排气腔 C内的管体上安装有一个一级消音器(49' )和两个二级消音器(50' ), 所述两 个排气管 (46) 相对安装在一级消音器 (49' ) 的两个进气口上, 两个二级消音器 (50' ) 分 别安装在一级消音器 (49' ) 的两个出气口上。
30、 根据权利要求 17所述的风冷超静音发电机组, 其特征在于: 所述主进气口 (39)包 括若干进气孔, 其中部分进气孔位于消音排气腔 C上方的顶盖 (60)侧壁上, 其余部分进气 孔位于环绕主进气腔 A的外箱体(33 )侧壁或底壁上; 所述下排风口 (42)位于外箱体(33 ) 的底壁上; 所述下进风口 (44) 位于底板 (36) 下方的外箱体 (33 ) 的侧壁上。
31、 根据权利要求 17所述的风冷超静音发电机组, 其特征在于: 所述顶盖(60)通过铰 链 (51 ) 安装在外箱体 (33 ) 的侧壁上, 所述油箱 (34) 底部与顶板 (35 ) 之间安装有气顶 杆 (52)。
32、 根据权利要求 17所述的风冷超静音发电机组, 其特征在于: 所述发动机(30)为汽 油发动机。
33、 根据权利要求 17所述的风冷超静音发电机组, 其特征在于: 所述发动机(30)为柴 油发动机。
34、 根据权利要求 17所述的风冷超静音发电机组, 其特征在于: 所述发电机(31 )和发 动机 (30)通过底部的防振胶垫 (53 )支撑在底板 (36) 上。
35、 根据权利要求 17所述的风冷超静音发电机组, 其特征在于: 所述外箱体(33 ) 的内 壁上贴附有 20mm的阻燃海绵; 所述顶板(35 )的上表面贴附有 6mm的阻燃海绵, 下表面依 次贴附有 8mm的玻璃纤维、 0.2mm的铝铂和 6mm的阻燃海绵; 所述右隔板 (38) 的左、 右 表面上分别贴附有 6mm的阻燃海绵; 所述左隔板(37)的左、右表面上分别由内向外依次贴 附有 8mm的玻璃纤维、 0.2mm的铝铂和 6mm的阻燃海绵。
36、 根据权利要求 17所述的风冷超静音发电机组, 其特征在于: 所述外箱体(33 )底部 的安装有两个大胶轮 (54) 和两个带刹车的万向轮 (55)。
37、 根据权利要求 17所述的风冷超静音发电机组, 其特征在于: 所述外箱体(33 ) 的外 侧壁上安装有推手 (56)。
38、 根据权利要求 17所述的风冷超静音发电机组, 其特征在于: 所述外箱体(33 ) 的侧 壁上安装有三个可打开的边门 (57), 所述边门 (57)和顶盖(60)与外箱体(33 )之间安装 有锁和密封条。
39、 根据权利要求 17所述的风冷超静音发电机组, 其特征在于: 所述外箱体(33 ) 的外 侧壁上安装有急停开关 (58)和指示灯 (59)。
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