Ventilation system for small electric generator

Abstract

The utility model relates to the technical field of generator, disclose a small -size generator ventilation system, including casing, engine, generator and cooling fan, the casing includes air inlet and air outlet, its characterized in that, the air inlet intercommunication engine, the engine intercommunication air outlet, the air inlet, engine inside and air outlet constitute heat dissipation channel no.

Description

Technical Field

[0001] This utility model relates to the field of generator technology, specifically to a ventilation system for a small generator. Background Technology

[0002] During operation, both the engine and generator produce a significant amount of heat. If this heat cannot be dissipated in time, it will lead to excessive temperature rise, affecting the equipment's efficiency, operational stability, and lifespan. Therefore, a ventilation and cooling system is an indispensable and crucial part of generator design. Its function is to remove internal heat through forced or natural airflow, maintaining the generator within a suitable temperature range. Especially for small generators, achieving efficient heat dissipation within limited space while maintaining a compact structure and small size is a key technical challenge that needs to be addressed during the design process.

[0003] Chinese patent document CN213711183U discloses a residential and commercial silent gas generator set, including a housing. An electrical control box, a generator, an engine, a cooling fan, and a cooling water tank are arranged sequentially along the length of the housing. The housing has air inlets at the positions corresponding to the electrical control box and the generator, and an air outlet at the end near the cooling water tank. The cooling fan can attract external airflow into the housing through the air inlet, flow through the corresponding electrical control box and / or generator, then through the engine and the cooling water tank, and finally be discharged outside the housing through the air outlet.

[0004] The existing technology has the following shortcomings: Currently, generators mainly dissipate heat through three-sided air intake and one-sided air exhaust. A hot air fan draws air into the casing through the intake and exhausts it through the exhaust. However, for small generators, the internal space is compact, and the traditional multi-sided air intake cooling layout is often difficult to apply directly, and it can easily lead to an increase in the overall size of the generator. Therefore, how to achieve efficient heat dissipation within a limited space while maintaining the miniaturization of the entire unit is a technical problem that needs to be solved. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this utility model provides a small generator ventilation system, including a housing, an engine, a generator, and a cooling fan. The housing includes an air inlet and an air outlet. The air inlet is connected to the engine, and the engine is connected to the air outlet. The air inlet, the interior of the engine, and the air outlet form a first heat dissipation channel. The bottom of the housing is provided with a lower air inlet, which is connected to the generator. The lower air inlet, the interior of the generator, and the air outlet form a second heat dissipation channel.

[0006] To enhance heat dissipation within a limited space, a ventilation gap is provided at the connection between the engine and the generator, and the ventilation gap connects to the air outlet.

[0007] Preferably, the cooling fan is positioned between the generator and the air outlet to facilitate rapid heat dissipation.

[0008] To ensure proper support while facilitating airflow, the bottom of the housing is equipped with two support bases. Above these bases is a support plate, on which the lower air inlet is located. The support plate is suspended below to allow for airflow and heat dissipation from the bottom of the housing.

[0009] To facilitate noise reduction, the engine is connected to a muffler located at the air outlet.

[0010] To facilitate the installation of the muffler and cooling fan, a mounting bracket is provided at the air outlet, and a lower ventilation hole is provided at the bottom of the mounting bracket for ventilation of the cooling fan.

[0011] To facilitate heat dissipation, the muffler is located above the cooling fan, and the upper part of the mounting bracket is provided with an upper ventilation hole that connects to the ventilation gap.

[0012] This utility model has the following beneficial effects: 1. This utility model adopts a dual heat dissipation channel structure. The generator and engine dissipate heat through independent heat dissipation channels. The air inlet, engine, muffler and air outlet constitute heat dissipation channel one, and the lower air inlet, generator and air outlet constitute heat dissipation channel two. While ensuring the heat dissipation effect, the size of the generator is reduced. There is no need to expand the size of the casing. The heat dissipation is met by using the internal space of the generator and engine to meet the basic heat dissipation requirements of the small generator.

[0013] 2. By setting a ventilation gap at the connection between the engine and the generator and connecting it to the air outlet, some airflow can pass through the gap to assist in cooling the casing of the engine and generator, which improves the flexibility of the heat dissipation path and the overall heat dissipation uniformity, and further enhances the heat dissipation effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an embodiment of the small generator ventilation system of this utility model; Figure 2 This is a schematic diagram of the interior of the casing; Figure 3 This is a schematic diagram of the air outlet; Figure 4 for Figure 1 A diagram at the bottom; Figure 5 for Figure 1 Side view; Figure 6 This is an exploded view of an embodiment of the small generator ventilation system of this utility model. Detailed Implementation

[0015] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: housing 1, air inlet 101, air outlet 102, engine 2, engine air inlet 201, generator 3, air vent 301, cooling fan 4, ventilation gap 5, support base 6, support air inlet 601, air inlet channel 602, support plate 7, lower air inlet 8, mounting bracket 9, lower ventilation hole 10, upper ventilation hole 11, muffler 12, electronic control system 13, gas system 14, battery 15, air intake control system 16.

[0016] Example 1

[0017] like Figure 1-6 As shown, a small generator ventilation system includes a housing 1 (not fully shown in the figure), an engine 2, a generator 3, and a cooling fan 4. One side of the housing 1 is an air inlet 101, and the other side is an air outlet 102. The air inlet 101 is connected to the interior of the engine 2 through the engine air inlet 201, and the exhaust port of the engine 2 is connected to the air outlet 102 through a muffler 12. The air inlet 101, the interior of the engine 2, and the air outlet 102 form a heat dissipation channel one. The bottom of the housing 1 is provided with a lower air inlet 8, which is connected to the generator 3 through an air outlet 301 at the bottom of the generator 3. The lower air inlet 8, the interior of the generator 3, and the air outlet 102 form a heat dissipation channel two.

[0018] Near the air inlet 101, there is also an electronic control system 13, a gas system 14, a battery 15, and an air intake control system 16. This is existing technology and will not be described in detail here.

[0019] The connection between the engine 2 and the generator 3 is a ventilation gap 5. The ventilation gap 5 connects the air outlet 102 and the inside of the engine 2 housing. Some of the air inside the engine 2 can dissipate heat from the engine 2 and the generator 3 housing through the ventilation gap 5 and then be discharged through the air outlet 102.

[0020] The cooling fan 4 is positioned between the generator 3 and the air outlet 102 to facilitate rapid heat dissipation.

[0021] The bottom of the housing 1 is provided with two support seats 6, and a support plate 7 is above the support seats 6. The lower air inlet 8 is provided on the support plate 7. The support plate 7 is suspended below to facilitate air intake and heat dissipation at the bottom of the housing 1. The support seat 6 near the air inlet 101 is provided with a support air inlet 601 and an air intake channel 602. The support air inlet 601 is connected to the air intake channel 602. The air inlet 101 supplies air to the lower air inlet 8 through the support air inlet 601 and the air intake channel 602.

[0022] The engine 2 is connected to the muffler 12, which is located at the air outlet 102.

[0023] The air outlet 102 is provided with a mounting bracket 9, and the lower part of the mounting bracket 9 is provided with a lower ventilation hole 10 for ventilation of the cooling fan 4.

[0024] The muffler 12 is located above the cooling fan 4, and the upper part of the mounting bracket 9 is provided with an upper ventilation hole 11 that connects to the ventilation gap 5.

[0025] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A small generator ventilation system, comprising a housing, an engine, a generator, and a cooling fan, wherein the housing includes an air inlet and an air outlet, characterized in that, The air inlet is connected to the engine, and the engine is connected to the air outlet. The air inlet, the engine interior, and the air outlet form a heat dissipation channel one. The bottom of the housing is provided with a lower air inlet, which is connected to the generator. The lower air inlet, the generator interior, and the air outlet form a heat dissipation channel two.

2. The small generator ventilation system according to claim 1, characterized in that: The connection between the engine and the generator is a ventilation gap, which is connected to the air outlet.

3. The small generator ventilation system according to claim 2, characterized in that: The cooling fan is positioned between the generator and the air outlet.

4. The small generator ventilation system according to claim 3, characterized in that: The bottom of the housing is provided with two support bases, and above the support bases is a support plate, on which the lower air inlet is provided.

5. The small generator ventilation system according to claim 4, characterized in that: The engine is connected to a muffler, which is located at the air outlet.

6. The small generator ventilation system according to claim 5, characterized in that: The air outlet is provided with a mounting bracket, and the lower part of the mounting bracket is provided with a lower ventilation hole for ventilation of the cooling fan.

7. The small generator ventilation system according to claim 6, characterized in that: The silencer is located above the cooling fan, and the upper part of the mounting bracket is provided with an upper ventilation hole that connects to the ventilation gap.

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