Silencer compartment heat dissipation structure and frequency converter

Abstract

This invention relates to a muffler compartment heat dissipation structure and a frequency converter. The muffler compartment heat dissipation structure includes a compartment body with outward-facing heat dissipation vents. A partition is installed inside the compartment, dividing the compartment body into a first compartment and a second compartment, and simultaneously dividing the heat dissipation vents into a first heat dissipation vent for the first compartment and a second heat dissipation vent for the second compartment. A muffler is installed in the first compartment, and an air inlet is also provided on the compartment body. The heat dissipation vent of the turbine radiator communicates with the inner cavity of the second compartment through the air inlet. Compared to existing technologies, the muffler compartment heat dissipation structure of this invention has a noise reduction effect on the turbine radiator, which is beneficial to the user experience. Simultaneously, when the gas discharged from the generator flows through the second compartment, it can absorb some of the heat from the muffler compartment, cooling it and preventing overheating. The frequency converter has the aforementioned muffler compartment heat dissipation structure and achieves the same technical effects.

Description

Technical Field

[0001] This invention relates to the field of variable frequency generator technology, specifically to a muffler compartment heat dissipation structure and a variable frequency motor. Background Technology

[0002] In existing technology, the inverter contains an engine to drive the crankshaft, which in turn drives a generator to produce electricity. The inverter also contains a muffler compartment, through which air from the engine cylinder head connects. After being silenced by the muffler, the air is exhausted to the outside through a heat dissipation vent on the side of the inverter housing, thus cooling the engine. Inside the inverter, there is also a turbine radiator. The fan's rotation draws in hot air from the generator through the intake port, through the volute duct, and out through the heat dissipation vent. The turbine radiator's outlet is located on the side of the inverter housing, allowing the hot air to be directly exhausted to the outside. The muffler compartment and the turbine radiator are arranged independently, each fulfilling its function. However, the high-speed rotation of the turbine radiator fan, the high-speed airflow, and the vibration of the volute all generate noise. In existing turbine radiator structures, internal noise propagates directly to the outside through the outlet, resulting in significant noise from the entire inverter generator and negatively impacting the user experience. Summary of the Invention

[0003] The first objective of this invention is to provide a muffler compartment heat dissipation structure to address the problem of excessive noise from the turbine-type radiator inside the variable frequency generator in the prior art; the second objective of this invention is to provide a variable frequency drive.

[0004] To achieve the aforementioned first objective, the technical solution adopted by the present invention is as follows:

[0005] A muffler compartment heat dissipation structure includes a compartment body with outward-facing heat dissipation vents. A partition is provided inside the compartment body, dividing the compartment body into a first compartment and a second compartment, and also dividing the heat dissipation vents into a first heat dissipation vent for the first compartment and a second heat dissipation vent for the second compartment. A muffler is provided in the first compartment, and an air inlet is also provided on the compartment body. The air outlet of the turbine radiator is connected to the inner cavity of the second compartment through the air inlet.

[0006] The present invention, employing the aforementioned technical solution, divides the chamber into a first compartment and a second compartment by setting a partition inside the chamber. It also eliminates the direct exhaust from the turbine radiator outlet in the prior art, connecting the turbine radiator outlet to the inner cavity of the second compartment. Gas exhaust from the turbine radiator first enters the second compartment and then exits through the second vent. This arrangement allows the inner wall of the second compartment to block noise from the turbine radiator, preventing noise from directly propagating to the outside through the outlet, thereby reducing noise. Compared to the problem of high noise levels in turbine radiators inside variable frequency generators in the prior art, the silencer compartment heat dissipation structure of the present invention has a noise reduction effect on the turbine radiator, which is beneficial to the user experience.

[0007] Furthermore, the partition is arranged horizontally within the cabin, dividing the cabin into an upper first cabin and a lower second cabin, and the muffler is located in the first cabin; the engine and generator are arranged vertically, and are respectively close to the vertically arranged first and second cabins, simplifying the connection structure and making the arrangement more reasonable.

[0008] Furthermore, the turbine radiator is located at the bottom of the cabin, the air inlet is opened on the bottom plate of the cabin, and the inner end of the partition is connected to the bottom plate, so that the inner end of the second cavity is closed; this ensures that all the gas discharged from the turbine radiator is discharged from the second heat dissipation port, avoiding the possibility that some gas may leak into the inverter from the inner end of the second cavity, resulting in good exhaust effect.

[0009] Furthermore, the base plate is a bent plate, making the air inlet L-shaped; the turbine radiator has a large cross-sectional area for the exhaust gas to diffuse outward.

[0010] Furthermore, along the direction from the inside out, the partition gradually tilts away from the base plate; in this configuration, the partition can guide the gas flowing in from the air inlet to the second heat dissipation port.

[0011] Furthermore, the muffler includes a buffer box and a porous muffler pipe. The outer end of the buffer box has a mounting hole, and the porous muffler pipe is inserted into the mounting hole. The inner end of the buffer box is connected to the air outlet pipe of the engine cylinder head. This structure of the muffler has a better noise reduction effect on the gas.

[0012] Furthermore, a grille is installed on the heat dissipation vent to protect the internal parts of the muffler compartment.

[0013] To achieve the second objective, the present invention adopts the following technical solution:

[0014] A frequency converter includes the aforementioned muffler compartment heat dissipation structure.

[0015] Compared with the prior art, the beneficial effects of the present invention are: it has a noise reduction effect on the turbine radiator, which is beneficial to the user experience; at the same time, when the gas discharged from the generator flows through the second compartment, it can absorb part of the heat of the muffler compartment, cool it down, and prevent it from overheating; the frequency converter has the same technical effect as the aforementioned muffler compartment heat dissipation structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention after the grating plate has been removed;

[0018] Figure 3This is a diagram showing the connection structure between the present invention and the turbine radiator;

[0019] Figure 4 for Figure 3 Exploded view of the structure;

[0020] Figure 5 for Figure 3 Another perspective diagram of the structure;

[0021] Figure 6 for Figure 3 Structural sectional view.

[0022] The markings in the diagram are: 1-hull, 2-turbine radiator, 3-heat vent, 4-partition, 5-buffer box, 6-air inlet, 7-air outlet, 8-perforated silencer pipe, 9-grille, 10-fan, 11-first compartment, 12-second compartment. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings.

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] Example 1: This example provides a muffler compartment heat dissipation structure, including a compartment 1, with an outward-facing heat dissipation vent 3 on the compartment 1. A partition 4 is provided inside the compartment 1, dividing the compartment 1 into a first compartment 11 and a second compartment 12, and at the same time dividing the heat dissipation vent 3 into a first heat dissipation vent in the first compartment 11 and a second heat dissipation vent in the second compartment 12. A muffler is provided inside the first compartment 11, and an air inlet 6 is also provided on the compartment 1. The air outlet of the turbine radiator 2 is connected to the inner cavity of the second compartment 12 through the air inlet vent 6.

[0026] The partition 4 is horizontally arranged inside the cabin 1, dividing the cabin 1 into the upper first cabin 11 and the lower second cabin 12. The silencer is located inside the first cabin 11.

[0027] The turbine radiator 2 is located at the bottom of the compartment 1, the air inlet 6 is opened on the bottom plate of the compartment 1, and the inner end of the partition 4 is connected to the bottom plate, so that the inner end of the second cavity 12 is closed.

[0028] The base plate is a bent plate, which makes the air intake 6 L-shaped;

[0029] Along the direction from the inside out, partition 4 gradually tilts away from the bottom plate;

[0030] The muffler includes a buffer box 5 and a perforated muffler pipe 8. The outer end of the buffer box 5 has a mounting hole, and the perforated muffler pipe 8 is inserted into the mounting hole. The inner end of the buffer box 5 is connected to the air outlet pipe 7 of the engine cylinder head. The outer end of the perforated muffler pipe 8 is open and the inner end is closed. Several muffler holes are opened on the part of the pipe wall that is inserted into the buffer box 5. The gas discharged from the air outlet pipe 7 enters the buffer box 5, then enters the perforated muffler pipe 8 through the muffler holes, and flows out from its outer end opening.

[0031] A grille plate 9 is installed on the heat dissipation vent 3.

[0032] The present invention, employing the aforementioned technical solution, divides the chamber 1 into a first chamber 11 and a second chamber 12 by setting a partition 4 inside the chamber 1. It also eliminates the direct exhaust from the turbine radiator outlet in the prior art, connecting the turbine radiator outlet 2 to the inner cavity of the second chamber 12. Gas discharged from the turbine radiator 12 first enters the second chamber 12 and then exits through the second heat dissipation outlet. This arrangement provides some noise reduction by blocking noise from the turbine radiator 2 from directly transmitting it to the outside through the outlet. Compared to the problem of excessive noise from the turbine radiator inside the variable frequency generator in the prior art, the muffler chamber heat dissipation structure of the present invention reduces noise from the turbine radiator, improving user experience. Simultaneously, when the gas discharged from the generator flows through the second chamber 12, it absorbs some of the heat from the muffler chamber, cooling it and preventing overheating.

[0033] Example 2: A frequency converter, which includes the above-mentioned muffler compartment heat dissipation structure.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A muffler compartment heat dissipation structure, comprising a compartment (1), wherein the compartment (1) is provided with an outward-facing heat dissipation vent (3), characterized in that: The cabin (1) is provided with a partition (4), which divides the cabin (1) into a first cabin (11) and a second cabin (12), and at the same time divides the heat dissipation vent (3) into a first heat dissipation vent of the first cabin (11) and a second heat dissipation vent of the second cabin (12); the first cabin (11) is provided with a silencer, and the cabin (1) is also provided with an air inlet (6), and the air outlet of the turbine radiator (2) is connected to the inner cavity of the second cabin (12) through the air inlet (6); The partition (4) is arranged horizontally inside the cabin (1), dividing the cabin (1) into the upper first cabin (11) and the lower second cabin (12), and the silencer is located inside the first cabin (11); The turbine radiator (2) is located at the bottom of the compartment (1), the air inlet (6) is opened on the bottom plate of the compartment (1), and the inner end of the partition (4) is connected to the bottom plate, so that the inner end of the second compartment (12) is closed. Along the direction from the inside out, the partition (4) gradually tilts away from the bottom plate.

2. The muffler compartment heat dissipation structure according to claim 1, characterized in that: The base plate is a bent plate, which makes the air inlet (6) L-shaped.

3. The muffler compartment heat dissipation structure according to claim 1, characterized in that: The muffler includes a buffer box (5) and a perforated muffler pipe (8). The outer end of the buffer box (5) is provided with an installation hole, and the perforated muffler pipe (8) is inserted into the installation hole. The inner end of the buffer box (5) is connected to the air outlet pipe (7) of the engine cylinder head.

4. The muffler compartment heat dissipation structure according to claim 1, characterized in that: A grille (9) is installed on the heat dissipation port (3).

5. A frequency converter, characterized in that: The muffler compartment heat dissipation structure includes any one of claims 1-4.

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