Air cooling structure for inverter of digital variable frequency generator

Abstract

The utility model discloses an air cooling structure for an inverter of a digital frequency conversion generator, and relates to the technical field of air cooling structures. The generator air cooling structure comprises an auxiliary air supply mechanism, an inverter independent air cooling channel, a generator air inlet fan and an inverter. Power provided by the air inlet fan of the generator is obtained through the auxiliary air supply mechanism, air is absorbed to enter the air cooling channel of the inverter, cooling air is quickly blown out through the blowing nozzle in the air cooling channel of the inverter, and the cooling effect is improved. Meanwhile, the structure is simple and easy to change, and external cooling can be carried out on any local heating area of the generator. The device has a good use prospect and is suitable for popularization and use.

Description

Technical Field

[0001] The utility model relates to the technical field of air-cooling structures of inverters, in particular to an air-cooling structure of an inverter of a digital variable-frequency generator. Background Art

[0002] Digital variable-frequency generators have many advantages such as low noise, small size, stable output, and high power generation efficiency. Therefore, a variety of variable-frequency generator products have been launched on the market. However, compared with traditional generators, variable-frequency generators have an additional inverter controller module. When the inverter controller module is working, it generates a large amount of heat and the temperature will rise. If the temperature of the inverter in the module is too high, it will directly affect the normal operation of the equipment. The heat dissipation of variable-frequency generators has become a major problem in product development.

[0003] The forced air-cooling method is widely used by developers of digital variable-frequency generators. However, most of them only adopt a single air duct method in which a cooling fan is connected to the crankshaft. Although the structure is simple in this way, not only is the cooling effect limited, but the generated air flow will be very uneven in the internal air duct of the generator, which is extremely likely to cause the danger of excessive local temperature of the generator. Summary of the Utility Model

[0004] In order to solve the above problems, the purpose of the utility model is to provide an air-cooling structure of an inverter of a digital variable-frequency generator, which can generate wind to cool the local heat-generating area of the generator externally without using an additional motor.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An air-cooling structure of an inverter of a digital variable-frequency generator, comprising an auxiliary air supply mechanism, an independent air-cooling channel for the inverter, an air intake fan of the generator, and an inverter:

[0007] The air intake fan of the generator is located at the front end of the generator;

[0008] The independent air-cooling channel for the inverter comprises a collecting pipe, an independent branch pipe, and a blowing nozzle; the collecting pipe is installed at the front end of the air intake fan of the generator; one end of the independent branch pipe is obliquely inserted into the collecting pipe; the blowing nozzle is installed at the other end of the independent branch pipe; a cavity is provided at the front end of the collecting pipe and is not communicated with the rear end; cavities that are communicated at the front and rear ends are provided in the independent branch pipe and the blowing nozzle; the cavities in the collecting pipe, the independent branch pipe, and the blowing nozzle are sequentially communicated;

[0009] The auxiliary air supply mechanism comprises a driven shaft and a driven fan; one end of the driven shaft is fixedly installed on the rotating shaft of the air intake fan of the generator, and the other end of the driven shaft is fixedly installed with the driven fan;

[0010] The inverter is located at the outlet of the blowing nozzle.

[0011] Furthermore, the independent air-cooling channel of the inverter further includes a fixator; the fixator sleeves the gas collecting pipe; the independent branch pipe passes through the fixator; first and second fixing brackets are respectively arranged at two ends of the fixator; the first fixing bracket fixes the front end of the fixator and the gas collecting pipe; the second fixing bracket fixes the rear end of the fixator and the gas collecting pipe.

[0012] Furthermore, the intake fan of the generator is arranged in the intake pipe; the intake pipe is fixedly connected with the fixator.

[0013] Furthermore, an intake grille is arranged at the front end of the intake pipe; a round hole is arranged in the center of the intake grille, and the driven shaft passes through the round hole and is fixedly connected with the intake fan of the generator.

[0014] Furthermore, the air outlet end of the air nozzle is long and flat.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model is adapted to any generator with a built-in air-cooling fan, and uses the fan of the generator to drive the driven shaft to provide a power source for the auxiliary air supply mechanism;

[0017] 2. The independent air-cooling channel of the inverter of the utility model is highly independent, and theoretically can transmit the cool air at the air inlet to any local heating area outside the generator, which is suitable for point cooling;

[0018] 3. The air outlet end of the utility model is long and flat, which can make the cooling air speed fast and optimize its cooling capacity;

[0019] 4. The utility model has a simple structure, is easy to assemble, and has a low cost, and is suitable for popularization. Description of the Drawings

[0020] Figure 1 is a three-dimensional schematic diagram of the utility model;

[0021] Figure 2 is a sectional view of the utility model;

[0022] Figure 3 is a front view of the utility model;

[0023] Figure 4 is a three-dimensional schematic diagram of the combination of the auxiliary air supply mechanism and the independent air-cooling channel of the inverter of the utility model from a first perspective;

[0024] Figure 5 is a three-dimensional schematic diagram of the combination of the auxiliary air supply mechanism and the independent air-cooling channel of the inverter of the utility model from a second perspective;

[0025] Figure 6This is a three-dimensional schematic diagram of the intake fan part of the generator of the present utility model;

[0026] Figure 7 This is a side view schematic diagram of the installation position of the present utility model.

[0027] Explanation of reference numerals:

[0028] 1. Auxiliary air supply mechanism; 11. Driven shaft; 12. Driven fan; 2. Inverter independent air cooling channel; 21. Collector pipe; 22. Independent branch pipe; 23. Nozzle; 24. Fixator; 241. First fixing bracket; 242. Second fixing bracket; 100. Generator intake fan; 101. Intake pipe; 102. Intake grille; 103. Round hole; 200. Inverter. Specific embodiments

[0029] The following further describes the present utility model in detail with reference to the accompanying drawings and specific embodiments:

[0030] See Figures 1-6 As shown, a digital variable frequency generator inverter air cooling structure includes an auxiliary air supply mechanism 1, an inverter independent air cooling channel 2, a generator intake fan 100, and an inverter 200:

[0031] The generator intake fan 100 is located at the front end of the generator (not marked in the figure); the generator intake fan 100 is arranged in the intake pipe 101; the intake pipe 101 is fixedly connected to the fixator 24; the front end of the intake pipe 101 is provided with an intake grille 102; a round hole 103 is provided in the center of the intake grille 102, and the driven shaft 11 passes through the round hole 103 and is fixedly connected to the generator intake fan 100;

[0032] The inverter independent air cooling channel 2 includes a collector pipe 21, an independent branch pipe 22, a nozzle 23, and a fixator 24; the collector pipe 21 is installed at the front end of the generator intake fan 100; one end of the independent branch pipe 22 is obliquely inserted into the collector pipe 21; the nozzle 23 is installed at the other end of the independent branch pipe 22; the front end of the collector pipe 21 is provided with a cavity and is not communicated with the rear end; the independent branch pipe 22 and the nozzle 23 are provided with cavities that are communicated at the front and rear ends; the cavities in the collector pipe 21, the independent branch pipe 22, and the nozzle 23 are sequentially communicated; the fixator 24 is sleeved on the collector pipe 21; the independent branch pipe 22 passes through the fixator 24; the two ends of the fixator 24 are respectively provided with a first fixing bracket 241 and a second fixing bracket 242; the first fixing bracket 241 fixes the fixator 24 and the front end of the collector pipe 21; the second fixing bracket 242 fixes the fixator 24 and the rear end of the collector pipe 21; the outlet end shape of the nozzle 23 is long and flat;

[0033] The auxiliary air supply mechanism 1 includes a driven shaft 11 and a driven fan 12; one end of the driven shaft 11 is fixedly installed on the rotating shaft of the generator intake fan 100, and the other end of the driven shaft 11 is fixedly installed with the driven fan 12;

[0034] The inverter 200 is located at the outlet of the nozzle 23.

[0035] The working principle of the present utility model is as follows:

[0036] Embodiment: As Figures 1-6 shown (the arrow in the figure indicates the cooling air flow direction):

[0037] At the front end of the generator (not marked in the figure), a generator intake fan 100 is provided; on the side of the generator (not marked in the figure), an inverter 200 is provided.

[0038] Start the generator (not marked in the figure), and the generator intake fan 100 starts to work. Since the driven shaft 11 is fixedly installed on the rotating shaft of the generator intake fan 100, the driven shaft 11 also starts to rotate as the generator intake fan 100 rotates. At the other end of the driven shaft 11, a driven fan 12 is fixedly installed. The driven fan 12 rotates with the driven shaft 11 and sucks air into the collector pipe 21. Since one end of the collector pipe 21 close to the generator intake fan 100 is not ventilated, the air can only change direction and enter the independent branch pipe 22, and then enter the nozzle 23 through the independent branch pipe 22. Since the outlet end of the nozzle 23 is long and flat, the air outlet speed is fast and powerful, and it can better cool the inverter 200 located at the outlet end of the nozzle 23.

[0039] As Figure 7 shown:

[0040] The digital variable frequency generator unit M is arranged in a generator housing (the housing is not drawn completely in the figure); the inverter 200 of the digital variable frequency generator unit M is located on its side; the inverter air cooling structure is installed in front of the digital variable frequency generator unit M, and the fixer 24 is matched with the intake pipe 101 of the digital variable frequency generator unit M in position, and the nozzle 23 is matched with the inverter 200 in position.

[0041] The above are only the specific embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A digital variable frequency generator inverter air cooling structure, comprising an auxiliary air supply mechanism (1), an inverter independent air cooling channel (2), a generator air intake fan (100) and an inverter (200), characterized in that: The generator air intake fan (100) is located at the front end of the generator; The inverter independent air cooling channel (2) comprises an air collecting pipe (21), an independent branch pipe (22) and a blowing nozzle (23); the air collecting pipe (21) is installed at the front end of the generator air intake fan (100); one end of the independent branch pipe (22) is obliquely inserted into the air collecting pipe (21); the blowing nozzle (23) is installed at the other end of the independent branch pipe (22); a cavity is provided at the front end of the air collecting pipe (21) and is not connected to the rear end; a cavity is provided in the independent branch pipe (22) and the blowing nozzle (23) and the front and rear ends are connected; the cavities in the air collecting pipe (21), the independent branch pipe (22) and the blowing nozzle (23) are connected in sequence; The auxiliary air supply mechanism (1) comprises a driven shaft (11) and a driven fan (12); one end of the driven shaft (11) is fixedly mounted on a rotating shaft of a generator air intake fan (100), and the other end of the driven shaft (11) is fixedly mounted on the driven fan (12); The inverter (200) is located at the outlet of the blowing nozzle (23).

2. The air-cooling structure of a digital variable frequency generator inverter according to claim 1 is characterized in that: The inverter independent air cooling channel (2) further comprises a fixer (24); the fixer (24) is sleeved with the air collecting pipe (21); the independent branch pipe (22) passes through the fixer (24); a first fixing bracket (241) and a second fixing bracket (242) are respectively provided at two ends of the fixer (24); the first fixing bracket (241) fixes the fixer (24) and the front end of the air collecting pipe (21); and the second fixing bracket (242) fixes the fixer (24) and the rear end of the air collecting pipe (21).

3. The air cooling structure of a digital variable frequency generator inverter according to claim 2 is characterized in that: The generator air intake fan (100) is arranged in an air intake pipe (101); the air intake pipe (101) is fixedly connected to the fixer (24).

4. The air cooling structure of a digital variable frequency generator inverter according to claim 3 is characterized in that: An air intake grille (102) is provided at the front end of the air intake pipe (101); a circular hole (103) is provided in the center of the air intake grille (102); the driven shaft (11) passes through the circular hole (103) and is fixedly connected to the generator air intake fan (100).

5. A digital variable frequency generator inverter air cooling structure according to any one of claims 1 to 4, characterized in that: The air outlet end of the blowing nozzle (23) is long and flat.

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