Inverter generator series air inlet and exhaust cooling structure

Abstract

The utility model discloses a series-connection air inlet and exhaust cooling structure of an inverter generator, which comprises a casing, a working chamber is formed in the casing, and a negative pressure area is formed in the working chamber; the air conditioner further comprises a machine frame, the machine frame is installed in the negative pressure area in the machine shell, and an inverter, a variable frequency generator, an engine and a draught fan are installed on the machine frame, so that a same-direction cooling and heat dissipation series air channel is formed. By optimizing the design of the cooling channel, heat collaborative management among the engine, the inverter and the motor is realized, the overall cooling efficiency is improved, the operation cost of equipment is reduced, and the overall stability and reliability of the system are enhanced.

Description

Technical Field

[0001] The utility model relates to the field of inverter engines, in particular to an inverter generator series-connected air intake and exhaust cooling structure. Background Art

[0002] As the demand for stable and reliable power supply in industrial and commercial applications continues to grow, inverter generators are playing an increasingly important role in providing emergency backup power and main power. During the operation of traditional inverter generators, their internal components, such as engines, motors, and inverters, will generate a lot of heat. If this heat cannot be effectively discharged, it will cause the equipment to overheat, affect power generation efficiency, and even cause equipment damage.

[0003] In the prior art, inverter generator sets usually use independent cooling systems to cool each component. Although this method can reduce the temperature of the equipment to a certain extent, it has many shortcomings. First, multiple independent cooling systems increase the size and cost of the equipment; second, the cooling efficiency between independent systems is different, making it difficult to balance the temperature of each component, which can easily cause local overheating; finally, this cooling method has high energy consumption and does not conform to the current development trend of energy conservation and emission reduction.

[0004] In order to solve the above problems, a new cooling structure is needed, which can effectively and uniformly export the heat generated inside the generator set, ensure the stable operation of the equipment at high efficiency, while reducing energy consumption and maintenance costs. Summary of the invention

[0005] In order to solve the above problems, the utility model provides an inverter generator series air intake and exhaust cooling structure, which can effectively solve the deficiencies in the prior art.

[0006] The utility model is realized by the following technical scheme: an inverter generator series air intake and exhaust cooling structure, comprising a casing, a working chamber is formed inside the casing, and a negative pressure zone is formed in the working chamber;

[0007] It also includes a frame, which is installed in the negative pressure area inside the casing, and an inverter, a variable frequency generator, an engine and a fan are installed on the frame respectively, so as to form a same-direction cooling and heat dissipation series air duct;

[0008] One side of the housing is provided with a muffler chamber, and the housing outside the muffler chamber is provided with a cold air inlet and a heat dissipation window of the unit;

[0009] An inverter is installed on one side of the cold air inlet, and a variable frequency generator is installed on the other side of the inverter;

[0010] The bottom air outlet of the variable frequency generator is provided with a heat dissipation outlet, an engine is installed on the other side of the variable frequency generator, a fan is installed on the other end of the engine, an engine air guide cover is provided between the engine and the fan, and the engine and the inside of the fan are connected through the engine air guide cover;

[0011] A bottom heat dissipation channel is formed at the bottom of the engine, the heat dissipation exhaust port is communicated with the bottom heat dissipation channel, a heat dissipation air inlet is arranged at the other end of the bottom heat dissipation channel, the heat dissipation air inlet is communicated with the interior of the square fan, and the fan is used to discharge the hot air entering the interior of the fan into the muffler chamber, and discharge it to the outside through the heat dissipation window of the unit.

[0012] As a preferred technical solution, a motor fan is installed in the variable frequency generator, the outside of the motor fan is a motor cover, the output end of the motor fan is provided with a generating stator and a rotor, the other end of the motor fan forms a generator air inlet surface, and the cold air entering through the cold air inlet passes through the generator air inlet surface into the variable frequency generator, and is then discharged from the heat dissipation exhaust port at the bottom of the variable frequency generator.

[0013] As a preferred technical solution, a motor chassis air outlet cover is provided at the bottom of the casing, and a bottom partition is provided at the bottom of the engine, and the bottom heat dissipation channel is formed by the bottom partition and the motor chassis air outlet cover.

[0014] As a preferred technical solution, a volute is installed inside the fan, and a turbine is installed inside the volute. The turbine generates negative pressure when it works, and the heat is converged into the volute and then discharged.

[0015] As a preferred technical solution, the inverter is mounted on the frame via a shock-absorbing frame.

[0016] As a preferred technical solution, the top of the engine is the engine cylinder head, on which a body heat sink is arranged, and a cooling air inlet is arranged on the engine cylinder head in the middle of the body heat sink, facing the cold air inlet end. The cold air entering from the cold air inlet takes away the heat on the body heat sink and enters the interior of the engine, and then the hot air passes through the engine air guide cover and enters the fan for discharge.

[0017] As a preferred technical solution, a gear chamber cover is further provided on the contact surface between the engine and the variable frequency generator.

[0018] As a preferred technical solution, the cold air inlet includes an upper air inlet and a lower air inlet, and a sound-absorbing baffle is arranged at the air inlet end of the upper air inlet and the lower air inlet, and the upper and lower ends of the sound-absorbing baffle form openings for outputting cooling airflow.

[0019] The beneficial effects of the utility model are as follows: the utility model forms a same-direction cooling and heat dissipation series air duct by installing the inverter, the variable frequency generator, the engine and the fan on the same frame, which not only simplifies the structure of the cooling system, but also effectively makes the temperature in the zone close to the atmospheric temperature through the formation of a negative pressure zone, thereby reducing the influence of the internal temperature rise on the unit efficiency;

[0020] By optimizing the design of the cooling channel, the heat between the engine, inverter and motor can be coordinated and managed, thus improving the overall cooling efficiency, reducing the equipment operating cost and enhancing the overall stability and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the utility model after removing the chassis Figure 1 ;

[0025] Figure 4 This is a schematic diagram of the structure of the utility model after removing the chassis Figure 2 ;

[0026] Figure 5 The bottom structure of the utility model is shown in FIG. Figure 1 ;

[0027] Figure 6 The bottom structure of the utility model is shown in FIG. Figure 2 ;

[0028] Description of reference numerals:

[0029] 100. Chassis; 1. Engine air duct; 2. Working chamber; 3. Engine cylinder head; 4. Engine body heat sink; 5. Gear chamber cover; 7. Unit heat dissipation window; 8. Variable frequency generator; 9. Inverter; 10. Upper air inlet; 12. Lower air inlet; 13. Frame; 15. Motor cover; 16. Cooling exhaust vent; 17. Bottom partition; 18. Motor chassis air outlet cover; 20. Fan; 21. Engine; 24. Cooling air inlet; 101. Generator air inlet surface. DETAILED DESCRIPTION

[0030] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0031] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0032] like Figure 1-Figure 6 As shown, an inverter generator series air intake and exhaust cooling structure of the utility model comprises a casing, a working chamber 2 is formed inside the casing, and a negative pressure zone is formed inside the working chamber 2;

[0033] It also includes a frame 13, which is installed in the negative pressure area inside the casing, and the inverter 9, the variable frequency generator 8, the engine 21 and the fan 20 are respectively installed on the frame 13 to form a same-direction cooling and heat dissipation series air duct;

[0034] Among them, there is a muffler chamber on one side of the casing, and a cold air inlet and a unit heat dissipation window 7 are arranged on the casing outside the muffler chamber. Through the muffler chamber, the incoming cold air can reduce noise, thereby reducing the intake noise of the entire device;

[0035] An inverter 9 is installed on one side of the cold air inlet, and a variable frequency generator 8 is installed on the other side of the inverter 9;

[0036] The bottom air outlet of the variable frequency generator 8 is provided with a heat dissipation outlet 16, an engine 21 is installed on the other side of the variable frequency generator 8, a fan 20 is installed on the other end of the engine 21, an engine air duct 1 is provided between the engine 21 and the fan 20, and the engine 21 and the fan 20 are connected to each other through the engine air duct 1;

[0037] A bottom heat dissipation channel is formed at the bottom of the engine 21, the heat dissipation exhaust port 16 is communicated with the bottom heat dissipation channel, a heat dissipation air inlet 24 is arranged at the other end of the bottom heat dissipation channel, the heat dissipation air inlet 24 is communicated with the interior of the square fan 20, and the fan 20 is used to discharge the hot air entering the interior of the fan 20 into the muffler room, and discharge it to the outside through the heat dissipation window 7 of the unit.

[0038] Among them, a motor fan is installed in the variable frequency generator 8, the outside of the motor fan is a motor cover 15, the output end of the motor fan is provided with a generating stator and a rotor, and the other end of the motor fan forms a generator air inlet surface 101. The cold air entering through the cold air inlet passes through the generator air inlet surface 101 and enters the variable frequency generator 8, and then is discharged from the heat dissipation exhaust port 16 at the bottom of the variable frequency generator 8.

[0039] Among them, a motor chassis air outlet cover 18 is set at the bottom of the casing, and a bottom partition 17 is set at the bottom of the engine 21. The bottom heat dissipation channel is formed by the bottom partition 17 and the motor chassis air outlet cover 18, and the air passing through the variable frequency generator 8 is discharged from the heat dissipation exhaust port 16 and enters the bottom heat dissipation channel.

[0040] like Figure 2 and Figure 3 As shown, a volute is installed inside the fan 20, and a turbine is installed in the volute. The turbine generates negative pressure when it works, and the heat is converged into the volute and then discharged. An air outlet is provided on the volute to discharge the collected hot air.

[0041] The inverter 9 is mounted on the frame 13 via a shock-absorbing frame. The shock-absorbing frame can be any support structure with shock-absorbing capability. The shock-absorbing capability of the entire inverter 9 is increased by setting the shock-absorbing frame, thereby increasing the stability in use.

[0042] Among them, the top of the engine 21 is the engine cylinder head 3, and the engine cylinder head 3 is provided with a body heat sink 4. A cooling air inlet is provided on the engine cylinder head 3 in the middle of the body heat sink 4, facing the cold air inlet end. The cold air entering from the cold air inlet takes away the heat on the body heat sink 4 and enters the interior of the engine 21, and then the hot air passes through the engine air guide cover 1 and enters the fan 20 for discharge.

[0043] The contact surface between the engine 21 and the variable frequency generator 8 is also provided with a gear chamber cover 5 .

[0044] like Figure 1 and Figure 2 As shown, the cold air inlet includes an upper air inlet 10 and a lower air inlet 12. A sound-absorbing baffle is arranged at the air inlet end of the upper air inlet 10 and the lower air inlet 12. The upper and lower ends of the sound-absorbing baffle form openings for outputting cooling airflow.

[0045] The working project is as follows:

[0046] The cold air first enters the casing through the cold air inlet on the side of the device. A sound-absorbing baffle is designed at the air inlet to effectively reduce the noise during air intake. The incoming cold air flows to the inverter 9, is initially cooled by the heat sink of the inverter 9, and then flows to the variable frequency generator 8;

[0047] The shock absorber frame on the inverter 9 not only fixes the inverter 9, but also reduces the impact of vibration on the inverter 9 and improves stability. The cold air after the inverter 9 dissipates heat enters the variable frequency generator 8. The variable frequency generator 8 is equipped with a motor fan to help push the air to flow through the motor's power generation stator and rotor for cooling, and finally discharged through the heat dissipation exhaust port 16 at the bottom of the variable frequency generator 8;

[0048] The exhausted hot air enters the bottom heat dissipation channel formed at the bottom of the engine 21 to cool the components below the engine 21. The engine 21 cylinder head 3 at the top of the engine 21 is provided with a cooling air intake, so that the cold air can directly cool the engine 21 cylinder head 3 and the body heat sink 4, and take away the heat generated by the engine 21;

[0049] A fan 20 is installed on the other side of the engine 21, and the fan 20 is connected to the inside of the engine 21 through the engine air guide hood 1; the volute and turbine inside the fan 20 generate negative pressure, sucking in the hot air after the heat is dissipated by the engine 21, and exhausting the hot air through the muffler chamber at the rear of the equipment. The design of the fan 20 is to efficiently exhaust the hot air of the entire system and reduce the exhaust noise through the muffler chamber;

[0050] The design of the entire cooling system allows cold air to enter from the air inlet, pass through various heat-generating components, take away heat, and finally be efficiently discharged through the fan 20. This series airflow design not only improves the cooling efficiency, but also reduces noise and energy consumption due to the smooth flow of air.

[0051] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. An inverter generator series air intake and exhaust cooling structure, characterized in that: It comprises a casing, a working chamber (2) is formed inside the casing, and a negative pressure zone is formed inside the working chamber (2); The invention also comprises a frame (13), wherein the frame (13) is installed in the negative pressure area inside the casing, and an inverter (9), a variable frequency generator (8), an engine (21) and a fan (20) are respectively installed on the frame (13), thereby forming a same-direction cooling and heat dissipation series air duct; One side of the casing is provided with a muffler chamber, and the casing outside the muffler chamber is provided with a cold air inlet and a unit heat dissipation window (7); An inverter (9) is installed on one side of the cold air inlet, and a variable frequency generator (8) is installed on the other side of the inverter (9); The bottom air outlet of the variable frequency generator (8) is provided with a heat dissipation outlet (16); an engine (21) is installed on the other side of the variable frequency generator (8); a fan (20) is installed on the other end of the engine (21); an engine air duct (1) is provided between the engine (21) and the fan (20); the engine (21) and the fan (20) are connected to each other through the engine air duct (1); A bottom heat dissipation channel is formed at the bottom of the engine (21); the heat dissipation outlet (16) is in communication with the bottom heat dissipation channel; a heat dissipation inlet (24) is provided at the other end of the bottom heat dissipation channel; the heat dissipation inlet (24) is in communication with the interior of the fan (20); the fan (20) is used to discharge hot air entering the interior of the fan (20) into the muffler chamber, and discharge the hot air to the outside through the heat dissipation window (7) of the unit.

2. The inverter generator series air intake and exhaust cooling structure according to claim 1 is characterized in that: A motor fan is installed in the variable frequency generator (8), the outside of the motor fan is a motor cover (15), the output end of the motor fan is provided with a generator stator and a rotor, the other end of the motor fan forms a generator air inlet surface (101), the cold air entering through the cold air inlet passes through the generator air inlet surface (101) into the variable frequency generator (8), and then discharged through the heat dissipation exhaust port (16) at the bottom of the variable frequency generator (8).

3. The inverter generator series air intake and exhaust cooling structure according to claim 1, characterized in that: A motor chassis air outlet cover (18) is arranged at the bottom of the casing, and a bottom partition plate (17) is arranged at the bottom of the engine (21), and the bottom heat dissipation channel is formed by the bottom partition plate (17) and the motor chassis air outlet cover (18).

4. The inverter generator series air intake and exhaust cooling structure according to claim 1, characterized in that: The fan (20) is internally provided with a volute, and a turbine is installed in the volute. When the turbine is in operation, negative pressure is generated, and heat is converged into the volute and then discharged.

5. The inverter generator series air intake and exhaust cooling structure according to claim 1, characterized in that: The inverter (9) is mounted on the frame (13) via a shock-absorbing frame.

6. The inverter generator series air intake and exhaust cooling structure according to claim 1, characterized in that: The top of the engine (21) is an engine cylinder head (3), on which a body heat sink (4) is arranged, and a cooling air inlet is arranged on the engine cylinder head (3) in the middle of the body heat sink (4) and directly opposite to the cold air inlet end, and the cold air entering from the cold air inlet takes away the heat on the body heat sink (4) and enters the interior of the engine (21), and then the hot air passes through the engine air guide cover (1) and enters the fan (20) for discharge.

7. The inverter generator series air intake and exhaust cooling structure according to claim 1, characterized in that: The contact surface between the engine (21) and the variable frequency generator (8) is also provided with a gear chamber cover (5).

8. The inverter generator series air intake and exhaust cooling structure according to claim 1, characterized in that: The cold air inlet comprises an upper air inlet (10) and a lower air inlet (12), and a sound-absorbing baffle is arranged at the air inlet end of the upper air inlet (10) and the lower air inlet (12), and the upper and lower ends of the sound-absorbing baffle form openings for outputting cooling airflow.

Images