WO2017016343A1

WO2017016343A1 - High-efficiency generator set having dual cooling airway

Info

Publication number: WO2017016343A1
Application number: PCT/CN2016/086558
Authority: WO
Inventors: 谢安源; 秦尚勇
Original assignee: 重庆安来动力机械有限公司
Priority date: 2015-07-28
Filing date: 2016-06-21
Publication date: 2017-02-02
Also published as: CN105003336B; CN105003336A

Abstract

A generator set having dual cooling airways comprises a generator set housing (12) and an engine-generator. The engine-generator comprises an engine cooling airway (a) and a generator cooling airway (b). An air inlet of the engine cooling airway (a) is disposed at a starter reel (4a), and an air outlet thereof is disposed at a muffler air venting rubber cover (7). A cylinder head (1) and a muffler (2) are disposed in a sealed channel formed between the air inlet and air outlet of the engine cooling airway (a). Air inlets of the generator cooling airway (b) are disposed at a top portion, side portion and bottom portion of an engine case cover (8), and an air outlet thereof is disposed at a generator end cover (11). A cooling fan (9) and a generator (3) are disposed in a sealed channel between the air inlets and air outlet of the generator cooling airway (b). A blade of the cooling fan (9) has a curved cover structure. The two cooling airways of the generator set are independent from each other, thus simplifying air channels, optimizing the arrangement of the air channels and reducing a component number.

Description

Efficient dual cooling duct generator set

Technical field

The utility model relates to the technical field of generator sets, in particular to the structure of cooling air ducts in an engine type generator set.

Background technique

The engine generator generates electricity by running the motor through the engine, and an engine cooling air duct and a motor cooling air duct are arranged inside the engine generator. The engine cooling air duct cools the cylinder head and the muffler of the engine, and the motor cooling air duct is a motor. Cool down.

Among the existing engine-type generators, there are mainly two types of structures: one is to cool the cylinder head and the motor by two cooling airs, and then to cool the muffler together after converging, this structure ensures smooth flow of cooling air, cooling wind The structure of the road is complicated, the number of parts constituting the cooling air duct is large, and the installation precision is very high. The other is to first cool the cylinder head and then divide it into two separate cooling muffler and motor, but the cooling air cooling effect after diversion is not ideal. .

Summary of the invention

The invention aims to provide a generator set with double cold air ducts, one cooling air is used for cooling the cylinder head and the muffler, and the other cooling air is used for cooling the motor, and the two cooling air passages are independent, simplifying the air passage and optimizing the wind. The layout of the road reduces the number of parts and ensures the cooling effect. At the same time, it provides a new structure of the motor cooling fan blade, which increases the amount of air exhausted by the cooling fan and improves the cooling effect of the motor.

To this end, the technical solution adopted by the present invention is: a generator set with high efficiency double cooling air duct, package The unit casing includes an engine generator disposed in the casing of the unit, the engine generator including an engine cooling air passage having cooling air for cooling the cylinder head and the muffler, and motor cooling having cooling air for cooling the motor The wind tunnel is characterized by:

The air inlet of the engine cooling air duct is disposed on the starter pull plate, and the air outlet is disposed on the muffler air outlet rubber sleeve, and the cylinder head and the muffler are disposed in a tight seal formed between the air inlet and the air outlet of the engine cooling air duct In the channel, the air inlets of the motor cooling air duct are respectively disposed at the top, the side and the bottom of the engine cover, the air outlet is disposed on the motor end cover, and the cooling fan and the motor are placed at the air inlet and the air outlet of the motor cooling air duct. The closed air passage formed between the unit is provided with an air inlet of the engine cooling air duct, an air outlet of the engine cooling air passage, an air inlet of the motor cooling air duct, and an air outlet position of the motor cooling air duct. Into the style grid;

The cooling fan comprises a plate-shaped main body and a blade, and the two are integrally formed. The plate-shaped main body is provided with a plurality of circumferentially distributed wind passage holes, and the blades are arranged on the front surface of the plate-shaped main body and correspond to the ventilation holes. The cross-section of the blade is arched, and the arched height gradually decreases along the air inlet direction of the cooling fan until it is integrated with the edge of the wind tunnel, thereby forming an arc-shaped cover structure with an air inlet, and a curved cover The corresponding over-air hole is completely covered. When the cooling fan rotates, the wind enters the blade from the air inlet, rotates through the arc-shaped cover at a certain angle, and then is discharged through the air-passing hole.

Preferably, as described above, the starter, the cooling fan, and the motor are disposed in a lower layer of the engine generator, and the air filter, the cylinder head, and the muffler are disposed on an upper layer of the engine generator, the engine cooling air passage The closed passage between the air inlet and the air outlet is surrounded by a starter air hood, a cylinder head air hood, a muffler cover and a muffler air outlet rubber sleeve, and the closed passage between the air inlet and the air outlet of the motor cooling air duct is The engine cover is enclosed with the motor cover. Optimize the structural arrangement to make the overall structure more compact and reasonable, and reduce the occupied area.

The inner end of the arcuate cross section of the blade is inclined rearward with respect to the outer end in the air inlet direction; the top of the air inlet is inclined rearward with respect to the root in the air inlet direction. In order to further optimize the air intake route, the wind entering the arc-shaped hood is smoother, and the cooling effect on the motor is better.

The invention has the beneficial effects that the engine cooling air passage for cooling the cylinder head and the muffler is separately arranged from the motor cooling air passage for cooling the motor, the two cooling air passages are independent, and the cooling air of the engine cooling air passage is controlled by the starter The fan is sucked in, and the cooling air of the motor cooling air duct is sucked by the cooling fan, which ensures sufficient air intake of the two air passages, smooth air intake, and good cooling effect; the air passage is simplified because the two cooling air ducts are independently provided. The structure and air duct layout reduce the number of parts and reduce the manufacturing cost; the blades of the motor cooling fan adopt a curved cover structure, which is matched with three motor cooling air duct inlets provided at the top, side and bottom of the engine cover, thereby increasing The amount of air exhausted by the large cooling fan further improves the cooling effect of the motor.

DRAWINGS

Figure 1 is a schematic view of the structure of the invention.

Figure 2 is a left side view of Figure 1.

Figure 3 is a right side view of Figure 1.

4 is a schematic structural view of an engine generator.

Figure 5 is a left side view of Figure 4.

Fig. 6 is a cross-sectional view taken along line A-A of Fig. 5;

Figure 7 is a perspective view of an engine generator.

Figure 8 is a schematic view showing the incomplete decomposition of Figure 7.

Fig. 9 is a schematic structural view of a cooling fan.

Figure 10 is a perspective view 1 of the cooling fan.

Figure 11 is a perspective view 2 of the cooling fan.

detailed description

The present invention will be further described below by way of embodiments with reference to the accompanying drawings:

The genset shown in Fig. 1 includes a unit casing 12, an engine generator disposed in the unit casing 12, and an inverter disposed in the unit casing 12 in addition thereto.

The engine generator shown in FIG. 4 to FIG. 8 is mainly composed of a cylinder head 1, a muffler 2, a motor 3, a starter 4 (including a starter puller 4a and a starter air hood 4b), and a cylinder head air hood. 5. The muffler cover 6, the muffler outlet rubber sleeve 7, the engine cover 8, the cooling fan 9, the air filter 10, the motor end cover 11 and the like.

Two cooling air ducts are provided in the engine generator, one is an engine cooling air duct a for cooling air passing through the cooling cylinder head 1 and the muffler 2, and one is for cooling air passing through the cooling motor 3 The motor cools the air duct b.

The air inlet of the engine cooling air duct a is disposed on the starter pull plate 4a. The starter pull plate 4a is provided with a fan, and the air outlet is disposed on the muffler air outlet rubber sleeve 7. The cylinder head 1 and the muffler 2 are disposed in the engine cooling air passage. a closed passage formed between the air inlet and the air outlet of the a; the air inlets of the motor cooling air duct b are respectively disposed at the top, the side and the bottom of the engine box cover 8, and the air outlet is disposed on the motor end cover 11, the cooling fan 9 And the motor 3 is placed in a closed passage formed between the air inlet and the air outlet of the motor cooling air duct b. The cylinder head 1 is part of the engine. The engine casing is composed of an engine casing and an engine casing cover 8, the engine casing being located on the side close to the starter 4, and the engine casing cover 8 being located on the side remote from the starter 4.

As shown in FIG. 2 and FIG. 3, the unit casing 12 is provided with an air inlet of the engine cooling air duct a, an air outlet of the engine cooling air duct a, an air inlet of the motor cooling air duct b, and a motor cooling air duct. The position of the air outlet of b corresponds to the entrance grill 12a. The top of the unit casing 12 is provided with a handle 12b for easy carrying.

Preferably, the starter 4, the cooling fan 9 and the motor 3 are disposed on the lower layer of the engine generator, and the air filter 10, the cylinder head 1 and the muffler 2 are disposed on the upper layer of the engine generator, and the engine cooling duct a closed passage between the air inlet and the air outlet is surrounded by the starter air hood 4b, the cylinder head air hood 5, the muffler cover 6 and the muffler air outlet rubber sleeve 7, and the motor cooling air duct b is between the air inlet and the air outlet The closed passage is surrounded by the engine cover 8 and the motor end cover 11. The cooling air for cooling the engine enters from the air inlet on the starter puller 4a, and in turn passes through a seal surrounded by the starter air deflector 4b, the cylinder head air duct 5, the muffler cover 6, and the muffler air outlet rubber sleeve 7. The passage is cooled by the cylinder head 1 and the muffler 2, and finally discharged by the air outlet on the muffler outlet rubber sleeve 7. The cooling air for cooling the motor enters from the air inlets at the top, side and bottom of the engine box cover 8, and is cooled by the cooling fan 9 to cool the motor 3, and then discharged from the air outlet on the motor end cover 11. The muffler cover 6 is preferably formed by fastening the left and right parts of the cover.

As shown in Figs. 9 to 11, the cooling fan 9 is mainly composed of a plate-like main body 9a and a vane 9b, and the two are integrally formed. The plate-like main body 9a is provided with a plurality of circumferentially evenly distributed wind passage holes 9c, and the vanes 9b are provided on the front surface of the plate-like main body 9a and correspond one-to-one with the wind passage holes 9c. The cross section of the blade 9b is arched, and the arched height gradually decreases along the air inlet direction of the cooling fan 9 until it is integrated with the edge of the wind tunnel 9c, thereby forming a curved cover structure with an air inlet 9d, and is curved. The cover completely covers the corresponding through hole 9c. When the cooling fan 9 rotates, the wind enters the blade 9b from the air inlet 9d, is rotated by a certain angle along the curved cover, and is then discharged by the wind passage 9c.

Preferably, the inner end of the arcuate cross section of the blade 9b is inclined rearward in the air inlet direction with respect to the outer end, and the top of the air inlet 9d is inclined rearward in the air inlet direction with respect to the root.

The engine-type generator set adds the unit casing and the inverter to the engine generator. If the structure is applied to the 2KW engine-type generator set, it is verified by experiments that the temperature of the inverter is reduced by 10 °C due to the improvement of the air duct. The efficiency of the inverter is better; the air inlet temperature of the air filter is reduced by 10 ° C, the combustion efficiency of the engine cylinder head is better, and the power can be increased by about 100 W.

Claims

A high efficiency dual cooling air duct generator set includes a unit casing (12), an engine generator disposed in the unit casing (12), the engine type generator including a cooling cylinder head (1) and a muffler ( 2) an engine cooling air passage (a) through which the cooling air passes and a motor cooling air passage (b) having a cooling air through which the cooling motor (3) passes, characterized in that:

The air inlet of the engine cooling air duct (a) is disposed on the starter puller (4a), and the air outlet is disposed on the muffler air outlet rubber sleeve (7), and the cylinder head (1) and the muffler (2) are disposed at a closed passage formed between the air inlet and the air outlet of the engine cooling air duct (a); the air inlets of the motor cooling air duct (b) are respectively disposed at the top, the side and the bottom of the engine box cover (8), The tuyere is disposed on the motor end cover (11), and the cooling fan (9) and the motor (3) are disposed in a closed passage formed between the air inlet and the air outlet of the motor cooling air duct (b); the unit casing (12) The air inlet of the engine cooling air duct (a), the air outlet of the engine cooling air duct (a), the air inlet of the motor cooling air duct (b), and the air outlet position of the motor cooling air duct (b) are respectively provided. Corresponding entry style grid (12a);

The cooling fan (9) includes a plate-shaped body (9a) and a blade (9b) integrally formed, and the plate-shaped body (9a) is provided with a plurality of circumferentially uniformly distributed wind holes (9c), the blades (9b) is disposed on the front surface of the plate-like body (9a) and corresponds one-to-one with the wind tunnel (9b), the blade (9b) having an arch shape in cross section, arched along the air inlet direction of the cooling fan (9) The height is gradually lowered until it is integrated with the edge of the air passage hole (9c), thereby forming a curved cover structure with an air inlet (9d), and the curved cover completely covers the corresponding air passage hole (9c), when When the cooling fan (9) rotates, the wind enters the blade (9b) from the air inlet (9d), rotates through a certain angle at the arc cover, and then is discharged through the air passage (9c).
A high efficiency dual cooling duct generator set according to claim 1 wherein: The starter (4), the cooling fan (9) and the motor (3) are arranged on the next layer of the engine generator, and the air filter (10), the cylinder head (1) and the muffler (2) are arranged in the engine generator The upper layer, the engine cooling air duct (a) the closed passage between the air inlet and the air outlet is composed of a starter air hood (4b), a cylinder head air hood (5), a muffler cover (6) and a muffler The air outlet rubber sleeve (7) is enclosed, and the closed passage between the air inlet and the air outlet of the motor cooling air duct (b) is enclosed by the engine cover (8) and the motor end cover (11).
A generator set according to claim 1 or 2, characterized in that the muffler cover (6) is formed by fastening the left and right parts of the cover.
A high-efficiency dual cooling air duct generator set according to claim 1, wherein said inner end of said arcuate cross section of said blade (9b) is inclined rearward relative to the outer end in the air inlet direction; said air inlet The top of the (9d) is inclined to the rear in the air inlet direction with respect to the root.