A wind-cooled silent digital generator device

Abstract

This utility model discloses a wind-cooled silent digital generator device, including a main housing. A control panel and a left air inlet are located on the lower half of the left inner wall of the main housing. A vertical partition, connected in a front-to-back direction, is fixedly installed in the middle of the lower half of the main housing. The left air inlet is located adjacent to the lower end of the control panel. An air guide shroud extends to the right from the upper inner side of the left air inlet. An air passage is provided between the right end of the air guide shroud and the vertical partition. The output control component is shaped like a vertical plate arranged in a front-to-back direction and is installed on the upper left side of the air passage, forming an upward airflow channel between the output control component and the vertical partition. This utility model enables targeted cooling of the output control component, improving the overall heat dissipation efficiency and service life of the main housing, while also facilitating the assembly and production of the output control component.

Description

Technical Field

[0001] This utility model relates to the field of general-purpose cooling technology, specifically to a silent digital generator device based on air cooling. Background Technology

[0002] A general-purpose machine refers to a machine equipped with an engine, which provides power to perform various functions. For example, it can be fitted with a water pump to draw water or a generator to generate electricity. A general-purpose generator is a small, portable generator with a generator set installed at the output of the engine, typically for household use.

[0003] A silent digital generator is a common type of general-purpose generator, and its structure is generally as follows (see...). Figure 1 The system includes a general-purpose rectangular housing 1. An oil tank 2 is located in the upper left corner inside the housing 1. A control panel 3 (control box) is located on the inner left wall of the housing. An output control component 4 is located below the oil tank inside the control panel 3. When the system is an AC generator, the output control component is an inverter; when the system is a DC generator (i.e.,...), the output control component is an inverter. Figure 1 In the case of (condition), the output control component 4 is a controller and a rectifier bridge. A horizontally arranged engine is set on the right side of the output control component 4. A generator assembly is installed on the main shaft of the engine. An engine housing 5 is installed around the engine. A hand-operated pull plate assembly 6 is also set on the main shaft at the left end of the engine. The hand-operated pull plate assembly 6 includes a hand-operated pull plate and a hand-operated pull plate fan installed coaxially and side by side. A carburetor 7 is set at the upper left end of the engine housing, and an air filter 8 is set at the lower left end. An engine cylinder head 9 is set at the upper middle part of the engine housing. A muffler 10 is connected to the upper right end of the engine housing.

[0004] This type of silent digital generator typically uses air cooling, and includes both single-duct and dual-duct structural designs. For the dual-duct design, please refer to [link to documentation]. Figure 1In this structure, left-side air inlets are located on the left side wall of the main casing, at the top and bottom of the control panel. These inlets rely on a hand-operated fan to draw air in, which passes through the control panel, output control components, and into the engine housing. After cooling the engine, the air flows out through the right-side outlet of the muffler, forming the first airflow path. In the dual-airflow configuration, the generator assembly 11 is mounted on the right end of the engine spindle. The generator assembly includes a motor fan, motor rotor, and motor stator mounted on the engine spindle. A generator housing covers the motor fan, motor rotor, and motor stator. The left end of the generator housing connects to the right end of the engine housing, and the right end of the generator housing connects to the right-side air inlet of the right end of the main casing via a guide sleeve. Thus, air from the right-side air inlet of the right end of the main casing forms a second airflow path, which merges with the first airflow within the engine housing before exiting through the muffler outlet.

[0005] The single-airflow silent digital generator eliminates the right-side air intake and the second airflow path, mounting the generator assembly on the left end of the engine's main shaft, resulting in relatively poorer cooling. Therefore, dual-airflow generator structures are more common. However, both single-airflow and dual-airflow silent digital generators suffer from low overall cooling efficiency, particularly affecting the cooling of engine components such as the carburetor and cylinder head, thus hindering the improvement of overall cooling efficiency.

[0006] To improve heat dissipation efficiency, the applicant modified the cooling structure of the fan, as shown in the following figure. Figure 2 As shown, a vertical baffle 12 is installed downwards below the stepped area in the middle of the lower surface of the fuel tank. The vertical baffle 12 isolates the output control components on the left and forms a relatively low-temperature area. An air vent is installed above the baffle and between it and the fuel tank. The airflow from the left side is guided through the baffle and first concentrated on cooling the carburetor and cylinder head before entering the engine housing to cool the engine. This greatly improves the cooling effect on the carburetor and cylinder head, and relatively improves the cooling efficiency of the generator.

[0007] Since the cooling effect of a generator greatly affects its overall power generation efficiency and service life, improving cooling efficiency is a perpetual pursuit in generator design. The above... Figure 2The silent digital generator with the structure shown improves the cooling effect on components such as the carburetor and cylinder head. However, during use, it was found that the airflow path between the air inlet above the control panel and the upper part of the partition is short, causing airflow to concentrate at this location. This results in less airflow to the output control components below. Furthermore, these output control components, including the inverter and rectifier bridge, are heat-generating components, and their proximity to the partition exposes them to heat radiation from the high-temperature area on the right side of the partition. This leads to poor cooling of the output control components, which in turn affects the safety of motor control and the overall cooling efficiency of the generator.

[0008] In addition, in existing silent digital generators, the output control components are all mounted and fixed at the bottom of the main unit casing using mounting brackets, which is inconvenient for installation. Utility Model Content

[0009] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to provide a wind-cooled silent digital generator device that can achieve targeted cooling of the output control components to improve the overall heat dissipation efficiency and service life of the generator.

[0010] To solve the above-mentioned technical problems, the present invention adopts the following technical solution, in which the direction is described with the side where the generator control panel is located as left.

[0011] A wind-cooled silent digital generator includes a generally rectangular housing. An oil tank is located in the upper left corner of the housing's inner cavity. A control panel (control box) and a left air inlet are located on the lower half of the left inner wall of the housing. An output control component is located below the oil tank inside the control panel. A horizontally arranged engine is located to the right of the output control component. A generator assembly is mounted on the engine's main shaft. An engine housing with an opening at the left end is fitted around the engine. A hand-operated crank assembly is also located on the main shaft at the left end of the engine. The hand-operated crank assembly includes a coaxially mounted hand-operated crank and a hand-operated crank fan. A carburetor is located at the upper left end of the engine housing. An engine cylinder head is located at the upper middle part of the engine housing. The upper right end of the engine housing is connected to the lower side of the muffler's tail. The output control... The lower half of the through-hole housing between the control component and the engine housing is also fixedly provided with a vertical partition that is connected in the front-to-back direction to form a partition. An air guide port facing the carburetor area is provided between the upper end of the vertical partition and the fuel tank. The characteristic is that the left air inlet is located adjacent to the lower end of the control panel. An air guide shroud is also provided extending to the right from the upper part of the inner side of the left air inlet. The air guide shroud has an upward semi-enclosed structure with both ends facing downward and covering the bottom surface of the inner cavity of the through-hole housing. The left end of the air guide shroud is connected to the left inner wall of the through-hole housing, and an air passage is provided between the right end and the vertical partition. The output control component is a vertical plate that is set in the front-to-back direction and is installed on the upper left side of the air passage, so that an upward air guide channel is formed between the output control component and the vertical partition. The output control component has a heat dissipation side facing the air guide channel.

[0012] In this way, when the device is in use, the hand-operated fan generates airflow, which enters from the left air inlet below the control panel. The airflow passes under the air guide shroud and then rises through the air passage to cool the output control components. The air then flows to the right from the upper part of the vertical partition, cooling the carburetor and engine cylinder block before entering the engine housing to cool the engine. Finally, the air exits from the muffler. This design allows for more targeted cooling of the self-heating output control components, improving their cooling efficiency. Components such as the control panel and fuel tank, being close to the main unit casing, can dissipate heat naturally through the casing, requiring less cooling. Therefore, the cooling structure described above significantly improves the overall cooling efficiency of the main unit and extends its service life.

[0013] Furthermore, the lower end of the vertical partition is snapped and fixed in a slot at the bottom of the inner cavity of the machine housing, and a guide strip is vertically fixed at both the front and rear ends of the left side of the vertical partition, and the front and rear sides of the output control component are installed and fixed on the guide strip.

[0014] In this way, the air guide strips better form an upward airflow channel between the vertical partition and the output control components, preventing airflow leakage from both sides. Simultaneously, this structure allows for the pre-installation and fixation of the vertical partition and output control components during generator assembly, followed by inserting the lower end of the vertical partition into the fixing slot. This significantly reduces the installation difficulty of the output control components.

[0015] Alternatively, the output control component is an inverter. This inverter is suitable for applications involving AC generators in operation.

[0016] Alternatively, the output control component is a controller, and a rectifier bridge is installed in the air duct between the controller and the vertical partition. This is suitable for applications where the main unit is a DC generator.

[0017] Furthermore, the air vent is formed by a notch or through hole opened at the upper end of the vertical partition.

[0018] This facilitates the formation of air vents.

[0019] Furthermore, a gap is provided between the left and upper sides of the fuel tank and the engine casing to form an airflow channel, a gap is provided between the upper side of the muffler and the engine casing to form an airflow channel, and an engine casing bracket is provided at the lower end of the engine casing, so that the gap between the lower surface of the engine casing and the engine casing forms an airflow channel.

[0020] In this way, the airflow entering from the left air intake reaches the upper part of the vertical partition. Part of the airflow passes through the air vent at the upper part of the vertical partition to the right, while the other part of the airflow passes through the left side of the fuel tank, the left side and the top, then passes through the upper and right ends of the muffler, and then downwards through the right end of the engine housing. Finally, it flows around the bottom of the engine housing and returns to the left end of the engine housing for intake. This improves the overall cooling effect of the engine.

[0021] Furthermore, the lower surface of the fuel tank has an upward-facing recessed step structure located to the right of the vertical partition.

[0022] This design allows the airflow to pass through the air inlet, with a portion of it flowing upwards to cool the carburetor and engine cylinder head before merging with the airflow from the top of the fuel tank. This airflow then bypasses the right and lower sides of the engine casing before entering the left inlet of the engine housing, forming a circular flow around the engine housing. This significantly improves the overall cooling effect of the engine.

[0023] Furthermore, the generator assembly is located at the right end of the engine. The generator assembly includes a motor fan, a motor rotor, and a motor stator mounted on the engine main shaft. The motor fan, motor rotor, and motor stator are covered by a generator housing. The left end of the generator housing is connected to the right end of the engine housing. The right end of the generator housing is connected to the right air inlet of the right end of the engine housing through a wind guide sleeve.

[0024] This design utilizes the motor fan to draw air in from the right-side air inlet at the right end of the main unit casing, creating a second airflow path. This second airflow then merges with the first airflow within the engine housing before exiting through the muffler outlet. This allows for better individual cooling of the generator components and improves the overall cooling efficiency of the main unit.

[0025] In practice, among other implementation options, the generator assembly can also be installed on the left side of the engine, but this results in relatively low overall cooling efficiency.

[0026] Furthermore, a handle is provided on the upper part of the casing for easy carrying.

[0027] Furthermore, a reflective layer is attached to the right side of the vertical partition.

[0028] In this way, the reflective layer can better reflect the heat radiation emitted by the engine and generator in the high-temperature area on the right, preventing heat radiation from being dissipated into the low-temperature area on the left, and better ensuring the cooling effect of the low-temperature area on the left.

[0029] Furthermore, the reflective layer is a tin-platinum material layer.

[0030] This ensures better heat reflection and insulation.

[0031] In summary, this invention enables targeted cooling of the output control components, improving the overall heat dissipation efficiency and service life of the machine, while also facilitating the assembly and production of the output control components. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a common general-purpose generator described in the background art of this utility model. The arrows in the diagram indicate the direction of cooling airflow.

[0033] Figure 2 The background technology described in this utility model Figure 1 Based on the existing structure, a structural diagram showing the addition of vertical partitions is provided.

[0034] Figure 3 This is a schematic diagram of the structure of this utility model.

[0035] Figure 4 for Figure 3AA sectional view. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to specific embodiments.

[0037] For specific implementation: see [link / reference] Figure 3-4 The arrows in the diagram indicate the direction of cooling airflow. A wind-cooled, silent digital generator includes a generally rectangular housing 1. An oil tank 2 is located at the upper left corner of the housing's inner cavity. A control panel 3 (control box) and a left air inlet 13 are located on the lower half of the left inner wall of the housing. An output control component 4 is located below the oil tank inside the control panel. A horizontally arranged engine is located to the right of the output control component 4. A generator assembly 11 is mounted on the engine's main shaft. An engine housing 5, open at the left end, is fitted around the engine. A hand-operated crank assembly 6 is also located on the main shaft at the left end of the engine. The hand-operated crank assembly 6 includes a coaxially mounted hand-operated crank and a hand-operated crank fan. A carburetor 7 is located at the upper left end of the engine housing, and an air filter 8 is located at the lower left end. An engine cylinder head 9 is located at the upper middle part of the engine housing. The upper right end of the engine housing 5 is connected to the lower rear end of a muffler 10. A vertical partition 12, which forms a partition along the front-to-back direction, is fixedly installed on the lower half of the through-hole housing between the output control component and the engine housing. An air guide port facing the carburetor area is provided between the upper end of the vertical partition 12 and the fuel tank. The left air inlet 13 is located adjacent to the lower end of the control panel. An air guide shroud 14 extends to the right from the upper inner side of the left air inlet. The air guide shroud 14 has an upward semi-enclosed structure with both ends facing downward and covering the bottom surface of the inner cavity of the through-hole housing 1. The left end of the air guide shroud 14 is connected to the left inner wall of the through-hole housing, and an air passage is provided between the right end and the vertical partition 12. The output control component 4 is a vertical plate-shaped component arranged along the front-to-back direction and is installed on the upper left side of the air passage, so that an upward air guide channel is formed between the output control component 4 and the vertical partition 12. The output control component 4 has a heat dissipation side facing the air guide channel.

[0038] In this way, when the device is in use, the hand-operated fan generates airflow, which enters from the left air inlet below the control panel. The airflow passes under the air guide shroud and then rises through the air passage to cool the output control components. The air then flows to the right from the upper part of the vertical partition, cooling the carburetor and engine cylinder block before entering the engine housing to cool the engine. Finally, the air exits from the muffler. This design allows for more targeted cooling of the self-heating output control components, improving their cooling efficiency. Components such as the control panel and fuel tank, being close to the main unit casing, can dissipate heat naturally through the casing, requiring less cooling. Therefore, the cooling structure described above significantly improves the overall cooling efficiency of the main unit and extends its service life.

[0039] The lower end of the vertical partition 12 is snapped into the slot 15 at the bottom of the inner cavity of the machine housing. A guide strip 16 is vertically fixed at both the front and rear ends of the left side of the vertical partition 12. The front and rear sides of the output control component 4 are installed and fixed on the guide strip 16.

[0040] In this way, the air guide strips better form an upward airflow channel between the vertical partition and the output control components, preventing airflow leakage from both sides. Simultaneously, this structure allows for the pre-installation and fixation of the vertical partition and output control components during generator assembly, followed by inserting the lower end of the vertical partition into the fixing slot. This significantly reduces the installation difficulty of the output control components.

[0041] In this embodiment, the output control component 4 is an inverter. This inverter is suitable for applications involving AC generators in operation positions.

[0042] As another possible implementation, the output control component is a controller, and a rectifier bridge is also installed in the air guide channel between the controller and the vertical partition. This is suitable for applications where the main unit is a DC generator.

[0043] In this embodiment, the air guide is formed by a notch or through hole opened at the upper end of the vertical partition 12.

[0044] This facilitates the formation of air vents.

[0045] The oil tank 2 has a gap between its left and upper sides and the engine casing 1, forming an airflow channel. The muffler 10 has a gap between its upper side and the engine casing 1, forming an airflow channel. The engine housing 5 has an engine housing bracket 17 at its lower end, so that the gap between the lower surface of the engine housing 5 and the engine casing 1 forms an airflow channel.

[0046] In this way, the airflow entering from the left air intake reaches the upper part of the vertical partition. Part of the airflow passes through the air vent at the upper part of the vertical partition to the right, while the other part of the airflow passes through the left side of the fuel tank, the left side and the top, then passes through the upper and right ends of the muffler, and then downwards through the right end of the engine housing. Finally, it flows around the bottom of the engine housing and returns to the left end of the engine housing for intake. This improves the overall cooling effect of the engine.

[0047] The lower surface of the oil tank 2 has an upward-facing recessed step structure located to the right of the vertical partition 12.

[0048] This design allows the airflow to pass through the air inlet, with a portion of it flowing upwards to cool the carburetor and engine cylinder head before merging with the airflow from the top of the fuel tank. This airflow then bypasses the right and lower sides of the engine casing before entering the left inlet of the engine housing, forming a circular flow around the engine housing. This significantly improves the overall cooling effect of the engine.

[0049] The generator assembly 11 is located at the right end of the engine. The generator assembly 11 includes a motor fan, a motor rotor, and a motor stator mounted on the main shaft of the engine. The motor fan, motor rotor, and motor stator are covered by a generator housing. The left end of the generator housing is connected to the right end of the engine housing. The right end of the generator housing is connected to the right air inlet of the right end of the engine housing through a wind guide sleeve.

[0050] This design utilizes the motor fan to draw air in from the right-side air inlet at the right end of the main unit casing, creating a second airflow path. This second airflow then merges with the first airflow within the engine housing before exiting through the muffler outlet. This allows for better individual cooling of the generator components and improves the overall cooling efficiency of the main unit.

[0051] In practice, among other implementation options, the generator assembly can also be installed on the left side of the engine, but this results in relatively low overall cooling efficiency.

[0052] The outer casing 1 is also equipped with a handle 18 at the top for easy carrying.

[0053] A reflective layer is attached to the right side of the vertical partition 12.

[0054] In this way, the reflective layer can better reflect the heat radiation emitted by the engine and generator in the high-temperature area on the right, preventing heat radiation from being dissipated into the low-temperature area on the left, and better ensuring the cooling effect of the low-temperature area on the left.

[0055] The reflective layer is a tin-platinum material layer.

[0056] This ensures better heat reflection and insulation.

Claims

1. A wind-cooled silent digital generator device, comprising a general rectangular housing, an oil tank located at the upper left corner of the housing's inner cavity, a control panel and a left air inlet located on the lower half of the left inner wall of the housing, an output control component located below the oil tank inside the control panel, a horizontally arranged engine located to the right of the output control component, a generator assembly mounted on the engine's main shaft, an engine housing with an opening at the left end fitted around the engine, a hand-operated crank assembly located on the left end of the engine's main shaft, the hand-operated crank assembly including a coaxially mounted hand-operated crank and a hand-operated crank fan, a carburetor located at the upper left end of the engine housing, an engine cylinder head located at the upper middle part of the engine housing, a connection between the upper right end of the engine housing and the lower side of the muffler's tail, a vertical partition fixedly installed in the lower half of the housing between the output control component and the engine housing, forming a partition along the front-to-back direction, an air guide port facing the carburetor area located between the upper end of the vertical partition and the oil tank, characterized in that... The left air inlet is located adjacent to the lower end of the control panel. An air guide shroud extends to the right from the upper inner side of the left air inlet. The air guide shroud has an upward semi-enclosed structure with both ends facing downwards and covering the bottom surface of the inner cavity of the main body. The left end of the air guide shroud is connected to the left inner wall of the main body, and the right end is provided with an air passage between it and the vertical partition. The output control component is a vertical plate-shaped component arranged in the front-back direction and is installed on the upper left side of the air passage, so that an upward air guide channel is formed between the output control component and the vertical partition. The output control component has a heat dissipation side facing the air guide channel.

2. The air-cooled silent digital generator device as described in claim 1, characterized in that, The lower end of the vertical partition is snapped and fixed in the slot at the bottom of the inner cavity of the machine housing. A guide strip is vertically fixed at both the front and rear ends of the left side of the vertical partition. The front and rear sides of the output control component are installed and fixed on the guide strips.

3. The air-cooled silent digital generator device as described in claim 1, characterized in that, The output control component is an inverter.

4. The air-cooled silent digital generator device as described in claim 1, characterized in that, The output control component is a controller, and a rectifier bridge is also installed in the air guide channel between the controller and the vertical partition.

5. The air-cooled silent digital generator device as described in claim 1, characterized in that, The air vent is formed by a notch or through hole at the upper end of the vertical partition.

6. The air-cooled silent digital generator device as described in claim 1, characterized in that, The left and upper sides of the fuel tank are separated from the engine casing to form an airflow channel. The upper side of the muffler is separated from the engine casing to form an airflow channel. An engine casing bracket is provided at the lower end of the engine casing, so that the gap between the lower surface of the engine casing and the engine casing forms an airflow channel.

7. The air-cooled silent digital generator device as described in claim 6, characterized in that, The lower surface of the fuel tank has an upward-facing recessed step structure located to the right of the vertical partition.

8. The air-cooled silent digital generator device as described in claim 1, characterized in that, The generator assembly is located at the right end of the engine. The generator assembly includes a motor fan, a motor rotor, and a motor stator mounted on the engine main shaft. The motor fan, motor rotor, and motor stator are covered by a generator housing. The left end of the generator housing is connected to the right end of the engine housing. The right end of the generator housing is connected to the right air inlet of the right end of the engine housing through a wind guide sleeve.

9. The air-cooled silent digital generator device as described in claim 1, characterized in that, A handle is also provided on the upper part of the casing.

10. The air-cooled silent digital generator device as described in claim 1, characterized in that, A reflective layer is attached to the right side of the vertical partition. The reflective layer is a tin-platinum material layer.

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