Mute digital generator set mechanism

Abstract

The utility model discloses a mute digital generator set mechanism, and relates to the technical field of generators. Comprising a machine shell, a variable-frequency generator, an engine, a fan, an engine oil cooler, an inverter and a silencer, the engine is located between the variable-frequency generator and the fan, the variable-frequency generator and the fan are directly connected with the engine, and an electric speed control oil pump is arranged on the top of the engine. When the variable-frequency generator, the engine, the inverter and the engine oil cooler work, the power flywheel of the engine drives the fan to rotate to achieve air induction of the fan, external air enters the cabinet through the air inlet window plate, the bottom air inlet and the side window plate, and heat dissipation of the variable-frequency generator, the engine, the inverter and the engine oil cooler in the cabinet is achieved. And the hot air finally enters the fan through the left side air duct, the right side air duct and the cabinet, then is introduced into the silencer chamber through the air guide piece, cools the silencer, and finally is exhausted through the air outlet window plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to generator technical field, concretely is a kind of mute digital generator set mechanism. BACKGROUND

[0002] Digital generator set applies control module technology to generator set, compared with traditional generator, it is more light and handy, power clean, and emission is lower, it is especially suitable for field operation or camping.

[0003] The cooling of the frequency converter and the generator of the conventional frequency conversion generator, there are two common cooling methods: the first cooling method is that the fan fixed on the crankshaft is directly driven by the rotation of the crankshaft to cool the stator and rotor of the generator; the airflow after cooling the stator and rotor of the generator is guided to the radiator of the frequency converter, thereby cooling the frequency converter, such as the cooling method of the product described in patent No. 200920268232.x. The second cooling method is that the stator and rotor of the generator and the frequency converter each have their own cooling fan.

[0004] Both of the above two cooling methods have certain disadvantages. The disadvantage of the first cooling method is that the temperature of the airflow after cooling the stator and rotor of the generator is usually around 50C, and it is difficult to meet the cooling requirements of the frequency converter. The disadvantage of the second cooling method is that on the one hand, the number of cooling fans and their accessories increases, thereby increasing the manufacturing and maintenance costs of the unit; on the other hand, the increase in the number of parts also inevitably increases the size of the unit, thereby increasing the storage and transportation costs. SUMMARY

[0005] The utility model aims at providing a mute digital generator set mechanism to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a mute digital generator set mechanism, comprising a cabinet, a frequency conversion generator, an engine, a fan, an oil cooler, an inverter and a silencer, the engine is located between the frequency conversion generator and the fan, and the frequency conversion generator and the fan are directly connected to the engine, the top of the engine is provided with an electrically controlled oil pump, the bottom of the cabinet is fixed with a first support plate and a second support plate, the two sides of the cabinet are respectively formed with a first side plate and a second side plate, the first side plate, the second side plate, the cabinet, the first support plate and the second support plate are connected to each other to form a cabinet;

[0007] The side of the fan is fixed with a vertical plate, the silencer is located in the silencer chamber formed by the vertical plate and the second side plate, the air outlet side of the fan is fixed with a wind guide connected to the silencer chamber, and the side of the second side plate is connected with an air outlet window plate;

[0008] The variable frequency generator is externally provided with an inverter, and an air inlet window plate is fixed on the plate body of the first side plate and located at the outer side of the inverter.

[0009] A baffle is fixed on the inner wall of the shell close to the first side plate, and a machine oil cooler heat dissipation cavity is formed between the baffle and the shell, and a side window plate is fixed on the outer side of the shell and communicates with the machine oil cooler heat dissipation cavity.

[0010] A bottom cavity is formed between the first support plate and the second support plate, a first partition plate is fixed between the first support plate and the second support plate, the first partition plate separates the bottom cavity into a left side air duct and a right side air duct, and the right side air duct communicates with the machine oil cooler heat dissipation cavity.

[0011] A notch is formed in the bottom of the shell of the variable frequency generator, and the notch communicates with the left side air duct.

[0012] The shell of the fan communicates with the left side air duct and the right side air duct.

[0013] Preferably, a bottom air inlet is formed in the bottom of the cabinet and close to the inverter.

[0014] Preferably, a speed regulating assembly is arranged on the top of the electrically regulated oil pump, and the electrically regulated oil pump is electronically regulated through the speed regulating assembly.

[0015] Preferably, the speed regulating assembly comprises a support fixed on the top of the engine, a rotating shaft movably connected to the side of the support, and a stepping motor fixed on the side of the support, and the output end of the stepping motor is fixed to the end of the rotating shaft.

[0016] An oil pump end speed regulating rod is fixed on the pull rod of the electrically regulated oil pump, a motor end speed regulating rod is fixed on the end of the rotating shaft, first and second connecting shafts are fixed on the rod bodies of the oil pump end speed regulating rod and the motor end speed regulating rod, and a hinged rod is arranged between the first and second connecting shafts and movably connected to the first and second connecting shafts.

[0017] Preferably, the top of the shell is provided with openable first and second maintenance covers.

[0018] Preferably, the air guide member comprises a heat dissipation cover, and an arc-shaped plate is fixed on the side of the heat dissipation cover, the fan exhaust air is blown to the silencer chamber at a right angle through the arc-shaped plate of the heat dissipation cover, and finally discharged from the air outlet window plate.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The mute digital generator set mechanism, when working, the power flywheel of the engine drives the fan to rotate to realize the air induction of the fan, the outside air enters into the cabinet through the air inlet window plate, the bottom air inlet and the side window plate, heat dissipation of the frequency conversion generator, the engine, the inverter and the oil cooler in the cabinet is realized, the hot air finally enters into the fan through the left air duct, the right air duct and the cabinet, then is introduced into the silencer chamber through the air guide piece, the silencer is cooled, and finally is discharged through the air outlet window plate, in the mechanism, the inverter and the oil cooler are cooled through the independent air duct, the set heat dissipation effect can be reached, in addition, the device only induces air through the fan, the structure is simple, and the overall volume of the mute digital generator set is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the left side view of the utility model;

[0022] Figure 2 It is the right side view of the utility model;

[0023] Figure 3 It is the bottom view of the utility model;

[0024] Figure 4 It is the bottom view of the utility model after removing the shell;

[0025] Figure 5 It is the side view of the utility model after removing the shell and the silencer;

[0026] Figure 6 It is Figure 5 the enlarged view of the partial view;

[0027] Figure 7 It is the other side view of the utility model after removing the shell;

[0028] Figure 8 It is the detail view of the air guide piece of the utility model;

[0029] Figure 9 It is the half cut view of the utility model.

[0030] In the diagram: 101. Housing; 102. Air inlet sill; 103. Air outlet sill; 104. Side sill; 105. First inspection cover; 106. Second inspection cover; 107. Bottom air inlet; 2. Engine; 3. Variable frequency generator; 301. Housing; 4. Fan; 501. Bracket; 502. Stepper motor; 503. Motor end speed control lever; 504. Oil pump end speed control lever; 505. First connecting shaft; 506. Hinge rod; 6. Electrically adjustable oil pump; 8. Muffler; 801. Vertical plate; 9. Air guide; 901. Radiator cover; 902. Arc plate; 10. Oil cooler; 11. Inverter; 121. Enclosure; 122. Oil cooler cooling chamber; 123. Partition one; 124. Right side air duct; 125. Left side air duct. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] like Figures 1-9 As shown, this utility model provides a technical solution: a silent digital generator set mechanism, including a housing 101, a frequency converter 3, an engine 2, a fan 4, an oil cooler 10, an inverter 11, and a muffler 8, as shown. Figure 7 As shown, the muffler 8 is configured as a two-stage muffler, namely a primary muffler 8 and a secondary muffler 8. The primary muffler 8 is connected to the engine 2, and the secondary muffler 8 is connected to the primary muffler 8 through a pipe. The secondary muffler 8 is connected to a long resistive muffler pipe, and the exhaust gas after noise reduction is discharged through the secondary muffler 8. A filter (not shown in the figure) is also installed on the top of the engine 2. The engine 2 is located between the variable frequency generator 3 and the fan 4, and the variable frequency generator 3 and the fan 4 are directly connected to the engine 2. An electronically adjustable oil pump 6 is installed on the top of the engine 2, and a speed regulating component is installed on the top of the electronically adjustable oil pump 6. The speed regulating component is used to electronically regulate the speed of the electronically adjustable oil pump 6.

[0033] A first support plate and a second support plate are fixed at the bottom of the housing 101. A first side plate and a second side plate are formed on both sides of the housing 101. The first side plate, the second side plate, the housing 101, the first support plate and the second support plate are connected to each other to form a cabinet. The variable frequency generator 3, the engine 2, the fan 4, the oil cooler 10, the inverter 11 and the muffler 8 are all located inside the cabinet.

[0034] The vertical plate 801 is fixed on the side of the fan 4, and a silencer chamber is formed between the vertical plate 801 and the second support plate. The silencer 8 is located in the silencer chamber. The fan 4 is fixed with a guide 9 which is connected with the silencer chamber on the air outlet side. The side of the second side plate is connected with the air outlet window plate 103.

[0035] As shown in Figure 7 and Figure 8 , the guide 9 comprises a heat sink 901, and the heat sink 901 is fixed with an arc plate 902 on the side. The air discharged by the fan 4 is blown to the silencer chamber at a right angle through the arc plate 902 of the heat sink 901, and finally discharged from the air outlet window plate 103.

[0036] The inverter 11 is arranged on the outside of the variable frequency generator 3. The air inlet window plate 102 is fixed on the plate body of the first side plate, and the air inlet window plate 102 is located on the outside of the inverter 11. The surrounding plate 121 is fixed on the inner wall of the cabinet 101 close to the first side plate. The oil cooler heat dissipation cavity 122 is formed between the surrounding plate 121 and the cabinet 101. The oil cooler 10 is located in the oil cooler heat dissipation cavity 122. The side window plate 104 is fixed on the outside of the cabinet 101 and is connected with the oil cooler heat dissipation cavity 122. In this way, the outside air can pass through the side window plate 104, so as to cool the oil cooler 10.

[0037] The bottom cavity is formed between the first support plate and the second support plate. The first support plate and the second support plate are fixed with the partition plate 123. The partition plate 123 divides the bottom cavity into the left air duct 125 and the right air duct 124. The right air duct 124 is connected with the oil cooler heat dissipation cavity 122. The slot is arranged on the bottom of the shell 301 of the variable frequency generator 3, and the slot is connected with the left air duct 125. In addition, the shell of the fan 4 is connected with the left air duct 125, the right air duct 124 and the inside of the cabinet. In this way, after the fan 4 draws air, the air in the left air duct 125, the right air duct 124 and the cabinet can be discharged into the silencer chamber, and finally discharged from the air outlet window plate 103.

[0038] In addition, in order to improve the air intake and prevent the small air intake from affecting the heat dissipation effect, the bottom air inlet 107 is arranged on the bottom of the cabinet, and the bottom air inlet 107 is close to the side of the inverter 11. It should be understood that the bottom air inlet 107 is arranged close to the side of the inverter 11 because the electronic elements such as voltage stabilizer are generally arranged on the side of the inverter 11 in the generator set structure. The arrangement of the bottom air inlet 107 can increase the heat dissipation effect of the digital generator set.

[0039] As shown in Figure 5 and Figure 6As shown, the speed control assembly includes a bracket 501 fixed to the top of the engine 2. A rotating shaft is movably connected to the side of the bracket 501. A stepper motor 502 is fixed to the side of the bracket 501. The output end of the stepper motor 502 is fixed to the end of the rotating shaft. An oil pump end speed control rod 504 is fixed to the pull rod of the electronically controlled oil pump 6. A motor end speed control rod 503 is fixed to the end of the rotating shaft. A first connecting shaft 505 and a second connecting shaft are fixed to the rods of the oil pump end speed control rod 504 and the motor end speed control rod 503. A hinge rod 506 is provided between the first connecting shaft 505 and the second connecting shaft, and both sides of the hinge rod 506 are movably connected to the first connecting shaft 505 and the second connecting shaft, respectively. Thus, when the speed of the electronically controlled oil pump 6 needs to be adjusted, the controller controls the stepper motor 502 to start. When the stepper motor 502 rotates, it drives the motor end speed control rod 503 to move, thereby realizing the rotation of the oil pump end speed control rod 504 through the linkage of the hinge rod 506.

[0040] In addition, such as Figure 1 As shown, a first inspection cover 105 and a second inspection cover 106 that can be opened are provided on the top of the housing 101. After opening the first inspection cover 105 and the second inspection cover 106, the engine 2 and the air filter inside the cabinet can be inspected and maintained.

[0041] As a supplement to this solution, during operation, the power flywheel of engine 2 drives the fan 4 to rotate, thereby drawing air from the fan 4. Outside air enters the cabinet through the air intake vent 102, the bottom air intake 107, and the side window 104, thereby cooling the inverter generator 3, engine 2, inverter 11, and oil cooler inside the cabinet. The hot air finally enters the fan 4 through the left air duct 125, the right air duct 124, and the cabinet, and is then introduced into the silencer chamber through the air guide 9. After cooling the silencer 8, the air is finally discharged through the air outlet vent 103.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A silent digital generator set mechanism, comprising a housing (101), a variable frequency generator (3), an engine (2), a fan (4), an oil cooler (10), an inverter (11), and a muffler (8), wherein the engine (2) is located between the variable frequency generator (3) and the fan (4), and the variable frequency generator (3) and the fan (4) are directly connected to the engine (2), and an electrically adjustable oil pump (6) is provided on the top of the engine (2), characterized in that: The bottom of the housing (101) is fixed with a first support plate and a second support plate. The two sides of the housing (101) are respectively formed with a first side plate and a second side plate. The first side plate, the second side plate, the housing (101), the first support plate and the second support plate are connected to each other to form a cabinet. A vertical plate (801) is fixed on the side of the fan (4), and a silencer (8) is located in the silencer chamber formed by the vertical plate (801) and the second side plate. A guide (9) connected to the silencer chamber is fixed on the air outlet side of the fan (4), and an air outlet window (103) is connected to the side of the second side plate. An inverter (11) is installed on the outside of the variable frequency generator (3), and an air intake window (102) is fixed on the plate of the first side plate. The air intake window (102) is located on the outside of the inverter (11). A partition plate (121) is fixed to the inner wall of the housing (101) near the first side plate. An oil cooler heat dissipation cavity (122) is formed between the partition plate (121) and the housing (101). A side window plate (104) connected to the oil cooler heat dissipation cavity (122) is fixed to the outer side of the housing (101). A bottom cavity is formed between the first support plate and the second support plate. A partition plate (123) is fixed between the first support plate and the second support plate. The partition plate (123) divides the bottom cavity into a left air duct (125) and a right air duct (124). The right air duct (124) is connected to the oil cooler heat dissipation cavity (122). The bottom of the casing (301) of the variable frequency generator (3) is provided with a slot, which is connected to the left air duct (125); The casing of the fan (4) is connected to the left air duct (125) and the right air duct (124).

2. The silent digital generator set mechanism according to claim 1, characterized in that: The cabinet has a bottom air inlet (107) at the bottom, which is close to the inverter (11).

3. The silent digital generator set mechanism according to claim 1, characterized in that: The top of the electrically adjustable oil pump (6) is equipped with a speed regulating component, which is used to electronically regulate the speed of the electrically adjustable oil pump (6).

4. The silent digital generator set mechanism according to claim 3, characterized in that: The speed control assembly includes a bracket (501) fixed on the top of the engine (2), a rotating shaft is movably connected to the side of the bracket (501), and a stepper motor (502) is fixed to the side of the bracket (501). The output end of the stepper motor (502) is fixed to the end of the rotating shaft. An oil pump end speed control rod (504) is fixed on the pull rod of the electric oil pump (6), and a motor end speed control rod (503) is fixed on the end of the rotating shaft. A first connecting shaft (505) and a second connecting shaft are fixed on the rods of the oil pump end speed control rod (504) and the motor end speed control rod (503). A hinge rod (506) is provided between the first connecting shaft (505) and the second connecting shaft. The two sides of the hinge rod (506) are movably connected to the first connecting shaft (505) and the second connecting shaft, respectively.

5. The silent digital generator set mechanism according to claim 1, characterized in that: The top of the housing (101) is provided with an openable first inspection cover (105) and a second inspection cover (106).

6. The silent digital generator set mechanism according to claim 1, characterized in that: The air guide (9) includes a heat sink (901), and an arc plate (902) is fixed on the side of the heat sink (901). The exhaust air from the fan (4) is blown at a right angle through the arc plate (902) of the heat sink (901) to the silencer chamber, and finally discharged from the air outlet window (103).

Images