A noise reduction diesel generator with fuel mixing adjusting structure
By combining the design of coolant storage tank, infusion pipe, ring pipe and double-layer structure, the problems of low heat dissipation efficiency and noise pollution of diesel generators are solved, realizing full-area cooling and noise reduction, and improving the operational stability and environmental adaptability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN WAETA POWER CO LTD
- Filing Date
- 2025-10-15
- Publication Date
- 2026-07-21
AI Technical Summary
Existing diesel generators have inefficient cooling methods, leading to excessive main body temperature and component failures, as well as severe noise pollution, which limits their application.
The system employs a combination design of coolant storage tank, infusion pipe, water pump, ring pipe, and double-layer structure to achieve full-area cooling and noise reduction. The ring pipe circulates coolant to absorb heat, while the double-layer structure isolates vibration and noise. Combined with the exhaust fan and intake fan, it forms a directional airflow channel to reduce airflow disturbance noise.
It improves the heat dissipation efficiency and stability of diesel generators, reduces noise pollution, and expands the scope of application.
Smart Images
Figure CN224532832U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of diesel generator technology, and in particular to a noise-reducing diesel generator with a fuel mixture regulation structure. Background Technology
[0002] As a core piece of equipment for emergency power supply and field operations, the operating efficiency, environmental friendliness, and stability of diesel generators directly affect the user experience and adaptability to various scenarios. When a diesel generator is running, the high-speed rotation of the generator body and the combustion of fuel generate a large amount of heat. Existing cooling methods mostly rely on a single fan blowing directly or simple water cooling: direct fan blowing is greatly affected by ambient temperature, and in high summer temperatures or in enclosed spaces, the heat exchange efficiency drops sharply, and the heat accumulation inside the chamber is difficult to dissipate, which can easily cause the generator body temperature to exceed the standard, leading to component failure and shortening its lifespan; traditional water cooling pipes are scattered and can only cool localized areas, leaving core components at risk of overheating, affecting the stability of power generation; at the same time, when a diesel generator is working, engine vibration, fan operation, and airflow disturbances generate high-frequency noise. Existing equipment relies on a simple single-layer outer chamber for sound insulation and does not have a special structure designed for noise propagation: the sound insulation capacity of a single-layer outer chamber is limited, solid-borne sound can easily propagate through the shell, and airflow noise spreads from the intake and exhaust ports. In sensitive scenarios such as residential areas and office areas, this not only disturbs people's rest and communication but may also cause noise complaints, significantly limiting its scope of use; therefore, improvements are needed to address the above problems. Utility Model Content
[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a noise-reducing diesel generator with a fuel mixture regulation structure.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a noise-reducing diesel generator with a fuel mixing regulation structure, comprising a coolant storage tank, an outer compartment fixedly connected to the top surface of the coolant storage tank, a liquid delivery pipe fixedly connected between the outer compartment and the coolant storage tank, a water pump installed on the liquid delivery pipe, an exhaust gas filter chamber installed on one side of the upper end of the outer wall of the outer compartment, an inner compartment provided inside the outer compartment, a generator body provided inside the inner compartment, a mixing component installed on the top surface of the generator body, and an open end of the exhaust gas filter chamber with a cover plate snapped on.
[0005] Preferably, the outer wall of the inner compartment is spirally wound with an annular tube, one end of which is connected to the infusion tube, and the other end of which is connected to the return tube installed on the outer compartment. One end of the return tube is connected and fixed to the coolant storage tank. The top surface of the outer compartment is symmetrically provided with an exhaust fan and an intake fan.
[0006] Preferably, an exhaust pipe is provided on the top surface of the generator body, the exhaust pipe passes through the inner chamber and the outer wall of the outer chamber in sequence, and is connected and fixed to the top surface of the exhaust gas filter chamber. An exhaust pipe is provided on the bottom surface of the exhaust gas filter chamber. Insert blocks are symmetrically provided at the upper and lower ends of the cover plate and the opposite surface of the exhaust gas filter chamber. Slots corresponding to the insert blocks are opened on the exhaust gas filter chamber.
[0007] Preferably, two spring boxes are symmetrically arranged at the upper and lower ends of the outer wall of the exhaust gas filter chamber. A connecting rod is passed through the spring box, and a spring located inside the spring box is sleeved on the connecting rod. A slot is opened on the opposite side of the insert block. A corresponding locking block is fixed to one end of the connecting rod, and a limiting block located on the outer wall of the spring box is fixed to the other end of the connecting rod. An activated carbon filter screen is placed inside the exhaust gas filter chamber.
[0008] Preferably, the mixing assembly includes two raw fluid tanks and a mixing tank installed inside the generator body. A mixing regulating chamber is installed at an angle in the middle of the top surface of the generator body. Two connecting pipes are symmetrically arranged on both sides of one end of the mixing regulating chamber, which are respectively connected to the two raw fluid tanks. A regulating valve is installed on the flange in the middle section of the connecting pipe. A fuel outlet pipe connected to the mixing tank is provided at the other end of the mixing regulating chamber.
[0009] Preferably, a rotating shaft is rotatably provided inside the mixing and regulating chamber, and multiple rotating blades are provided around one end of the rotating shaft. One end of each of the two connecting pipes is located on both sides of the rotating blades. Multiple spiral fan blades are provided around one end of the rotating shaft near the rotating blades, and through holes are evenly opened on the surface of the spiral fan blades.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through the cooperation of a coolant storage tank, a delivery pipe, a water pump, and a ring pipe, allows the water pump to drive the coolant through the delivery pipe into the ring pipe. The ring pipe spirally wraps around the outer wall of the inner chamber, forming a complete enclosure, facilitating the comprehensive absorption of heat generated by the generator body, improving heat exchange efficiency, and thus achieving a full-area cooling function for the generator body. Furthermore, through the cooperation of the ring pipe, the return pipe, and the coolant storage tank, the coolant, after absorbing heat, flows back to the coolant storage tank through the return pipe to complete the circulation, facilitating the continuous and stable removal of heat, improving the continuity and stability of heat dissipation, and thus achieving a constant temperature control function during long-term operation. Simultaneously, the double-layer structure of the outer and inner chambers... The inner compartment isolates the mechanical vibration of the generator body, while the outer compartment further blocks noise transmission, facilitating the reduction of solid-borne sound and airflow noise diffusion, thus improving sound insulation and achieving a combined noise reduction function. Furthermore, the exhaust fan and intake fan on the outer compartment work together to form a directional airflow channel, which facilitates heat dissipation while reducing noise generated by airflow disturbance, improving the stability of airflow, and thus achieving a synergistic function of heat dissipation and noise reduction. Ultimately, this solves the problems of excessive main body temperature, component failure and shortened lifespan caused by the inefficient heat dissipation of existing diesel generators, as well as noise pollution and limited application range caused by insufficient sound insulation of the single-layer outer compartment, improving the stability, durability and environmental adaptability of diesel generator operation. Attached Figure Description
[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a first-view schematic diagram of the overall structure proposed in this utility model; Figure 2 This is a first-view schematic diagram of the overall cross-sectional structure proposed in this utility model; Figure 3 This is a schematic cross-sectional view of the mixing and regulating chamber proposed in this utility model; Figure 4 This is a schematic cross-sectional view of the exhaust gas filtration chamber proposed in this utility model.
[0012] The following are the components listed in the diagram: 1. Coolant storage tank; 2. Water pump; 3. Exhaust gas filter chamber; 4. Exhaust fan; 5. Return pipe; 6. Infusion pipe; 7. Ring pipe; 8. Generator body; 9. Exhaust gas pipe; 10. Outer chamber; 11. Inner chamber; 12. Insert block; 13. Regulating valve; 14. Rotating vane; 15. Mixing regulating chamber; 16. Fuel outlet pipe; 17. Activated carbon filter. Detailed Implementation
[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0014] Example: See Figures 1 to 4 This utility model discloses a noise-reducing diesel generator with a fuel mixing regulation structure, comprising a coolant storage tank 1, an outer compartment 10 fixedly connected to the top surface of the coolant storage tank 1, a liquid delivery pipe 6 connected and fixedly connected between the outer compartment 10 and the coolant storage tank 1, a water pump 2 installed on the liquid delivery pipe 6, an exhaust gas filter compartment 3 installed on one side of the upper outer wall of the outer compartment 10, an inner compartment 11 inside the outer compartment 10, a generator body 8 inside the inner compartment 11, a mixing component installed on the top surface of the generator body 8, and an exhaust gas filter compartment 3 with one end open and secured with a cover plate; the coolant storage tank 1 is made of Q235 carbon steel, has a large storage capacity and is corrosion-resistant, and can stably store coolant; the outer compartment 10 and the inner compartment 11... All components are constructed using double-layer galvanized steel sheets, with centrifugal glass wool filling the middle, combining structural strength and sound insulation performance. Water pump 2 is an ISG50-160 pipeline centrifugal pump, featuring high head and stable flow, efficiently driving coolant circulation. These components together form the basic framework of the device, providing a stable platform for heat dissipation, noise reduction, and fuel mixture regulation, ensuring overall equipment reliability. The outer wall of the inner chamber 11 is spirally wound with an annular pipe 7. One end of the annular pipe 7 connects to the inlet pipe 6, and the other end connects to the return pipe 5 installed on the outer chamber 10. One end of the return pipe 5 is connected and fixed to the coolant storage tank 1. Exhaust fans are symmetrically installed on the top surface of the outer chamber 10. 4. The air intake fan and the ring pipe 7 are made of 304 stainless steel, which can fully wrap the inner chamber 11 to maximize the heat exchange area. The return pipe 5 is made of the same stainless steel with a smooth inner wall to reduce the flow resistance of the coolant. Both the exhaust fan 4 and the air intake fan are FA-40 axial flow fans with matching air volume and speed to form a directional airflow channel. Through the above, the coolant absorbs heat throughout the ring pipe 7, and with the airflow of the fan assisting in heat dissipation, the heat dissipation efficiency is greatly improved, and the temperature of the generator body 8 is prevented from exceeding the standard. The generator body 8 has an exhaust pipe 9 on the top surface, which passes through the inner chamber 11 and the outer wall of the outer chamber 10, and is connected to the top surface of the exhaust filter chamber 3. Next, the bottom surface of the exhaust gas filter chamber 3 is equipped with an exhaust pipe, and the cover plate and the exhaust gas filter chamber 3 are symmetrically equipped with inserts 12 at both ends. The exhaust gas filter chamber 3 has slots corresponding to the inserts 12. The exhaust gas pipe 9 is made of Q235 carbon steel, and the outer wall is wrapped with aluminum silicate insulation cotton to reduce the heat transfer of exhaust gas to the outer chamber 10. The inserts 12 are made of ABS engineering plastic, which has high hardness and strong wear resistance, and fits tightly with the slots to ensure that the cover plate is securely attached. The exhaust gas filter chamber 3 is made of 304 stainless steel, which is corrosion-resistant and easy to clean. Through the above, the exhaust gas pipe 9 can stably export exhaust gas to the filter chamber, and the cover plate can be easily attached to facilitate the subsequent replacement of filter components, improving the convenience of exhaust gas treatment.
[0015] In this utility model, two spring boxes are symmetrically arranged at the upper and lower ends of the outer wall of the exhaust gas filter chamber 3. A connecting rod passes through the spring box, and a spring is sleeved on the connecting rod inside the spring box. A slot is opened on the opposite side of the insert block 12. A corresponding slot is fixed to one end of the connecting rod, and a limiting block is fixed to the other end of the connecting rod at the outer wall of the spring box. An activated carbon filter screen 17 is placed inside the exhaust gas filter chamber 3. The spring box and the connecting rod are both made of 45# steel, and the spring is made of 65Mn spring steel with a stable elastic coefficient, which can ensure that the slot is tightly inserted into the slot and prevent the cover from loosening. The slot and the limiting block are made of the same steel material and are galvanized for rust prevention. The activated carbon filter screen 17 uses columnar activated carbon with high iodine value and high adsorption efficiency, effectively filtering harmful gases and particulate matter in exhaust gas. Through the above, the spring and locking block work together to quickly fix and remove the cover plate. The activated carbon filter 17 improves the exhaust gas filtration effect, meeting environmental protection requirements. The mixing assembly includes two raw liquid tanks and one mixing tank installed inside the generator body 8. A mixing regulating chamber 15 is installed obliquely in the middle of the top surface of the generator body 8. Two connecting pipes are symmetrically arranged on both sides of one end of the mixing regulating chamber 15, each corresponding to one of the two raw liquid tanks. A regulating valve 13 is installed on the flange in the middle section of the connecting pipe. The other end of the mixing regulating chamber 15 is connected to the mixing tank. The fuel outlet pipe 16; the original fluid tank and mixing tank are made of 304 stainless steel, with good sealing performance to prevent original fluid leakage; the mixing regulating chamber 15 is made of aluminum alloy, which is lightweight and has good thermal conductivity, facilitating subsequent heat dissipation; the regulating valve 13 is a ZJHP electronic regulating valve, which has high control precision and can accurately adjust the original fluid flow rate; the fuel outlet pipe 16 is made of copper alloy with a smooth inner wall to reduce fuel flow resistance; through the above, the regulating valve 13 can control the original fluid mixing ratio in real time, adapt to different load requirements, and improve fuel combustion efficiency; a rotating shaft is installed inside the mixing regulating chamber 15, and multiple rotating parts are arranged around one end of the shaft. The rotating plate 14 has two connecting pipes located at one end on each side. A rotating shaft is located at one end of the rotating plate 14 and has multiple spiral fan blades around its periphery. The blades of the spiral fan blades have evenly spaced through holes. Both the rotating shaft and the rotating plate 14 are made of 40Cr material, heat-treated for wear resistance and deformation resistance. The spiral fan blades are made of the same steel, enhancing the uniformity of the raw liquid mixing. The bearings at both ends of the rotating shaft are 6205 deep groove ball bearings, offering low rotational resistance and long service life. Through the above, the rotating plate 14 and the spiral fan blades work together to achieve thorough mixing of the raw liquid. The through holes accelerate the convection of the raw liquid, preventing uneven mixing and incomplete combustion, thus further improving power generation efficiency.
[0016] Working Principle: When using this utility model, firstly, before running the diesel generator, ensure that the coolant storage tank 1 contains sufficient coolant. Turn on the exhaust fan 4 and intake fan symmetrically arranged on the top of the outer compartment 10 to form a directional airflow channel, laying the foundation for subsequent heat dissipation and noise reduction. Start the generator body 8, which runs at high speed and provides power through fuel combustion. At the same time, the water pump 2 on the liquid delivery pipe 6 is started. The water pump 2 pressurizes the coolant in the coolant storage tank 1 and delivers it through the liquid delivery pipe 6 to the spirally wound annular pipe 7 on the outer wall of the inner compartment 11. The annular pipe 7, due to its spiral layout, can completely enclose the coolant. The inner chamber 11 quickly absorbs the heat generated by the operation of the generator body 8 and fuel combustion, initially completing heat collection. Then, it enters the heat dissipation circulation stage. The coolant, after absorbing heat, flows along the annular pipe 7 and finally returns to the coolant storage tank 1 through the return pipe 5 connected to the annular pipe 7, forming a closed-loop circulation. During this process, the exhaust fan 4 and intake fan on the outer chamber 10 operate continuously. The exhaust fan 4 expels the hot air generated by heat conduction inside the outer chamber 10, while the intake fan draws in cool outside air. The cool air flows through the gap between the outer chamber 10 and the inner chamber 11, further assisting the annular pipe 7 in cooling down and improving heat exchange. To improve efficiency, the generator body 8 is kept within a suitable temperature range to prevent overheating of core components. Simultaneously, a noise reduction structure works in tandem: the double-layer structure formed by the outer chamber 10 and inner chamber 11 effectively isolates solid-borne sound generated by mechanical vibrations of the generator body 8. The inner chamber 11 prevents vibrations from being directly transmitted to the outer chamber 10, while the outer chamber 10 further reduces noise diffusion. The directional airflow channel formed by the exhaust fan 4 and the intake fan reduces additional noise caused by airflow turbulence, ensuring smooth airflow in and out of the outer chamber 10 and preventing traditional cooling fans from exacerbating noise pollution due to airflow disturbances. If it is necessary to adjust the fuel mixture ratio... To adapt to load changes, the amount of raw liquid delivered through the regulating valve 13 of the mixing component can be controlled. After the raw liquid enters the mixing regulating chamber 15, it is initially mixed by the rotating blade 14 on the rotating shaft, and then the fuel and combustion improver are uniformly mixed by the stirring of the spiral fan blades and the flow diversion through the through holes on the blade surface. The mixed fuel is then delivered to the mixing box through the fuel outlet pipe 16 to provide stable power to the generator body 8. After the generator stops running, the generator body 8 is turned off first. After the temperature drops to a safe range, the water pump 2, exhaust fan 4 and intake fan are turned off in sequence to complete one operating cycle. At this point, the device is in use.
[0017] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A noise-reducing diesel generator with a fuel mixture regulation structure, comprising a coolant storage tank (1), characterized in that: The coolant storage tank (1) has an outer chamber (10) fixedly connected to its top surface. A liquid delivery pipe (6) is fixedly connected between the outer chamber (10) and the coolant storage tank (1). A water pump (2) is installed on the liquid delivery pipe (6). An exhaust gas filter chamber (3) is installed on one side of the upper end of the outer wall of the outer chamber (10). An inner chamber (11) is provided inside the outer chamber (10). A generator body (8) is provided inside the inner chamber (11). A mixing component is installed on the top surface of the generator body (8). One end of the exhaust gas filter chamber (3) is open and is secured with a cover plate.
2. A noise-reducing diesel generator with a fuel mixture regulation structure according to claim 1, characterized in that: The outer wall of the inner chamber (11) is spirally wound with an annular tube (7). One end of the annular tube (7) is connected to the infusion tube (6), and the other end of the annular tube (7) is connected to the return pipe (5) installed on the outer chamber (10). One end of the return pipe (5) is connected to the coolant storage tank (1). The top surface of the outer chamber (10) is symmetrically equipped with an exhaust fan (4) and an intake fan.
3. A noise-reducing diesel generator with a fuel mixture regulation structure according to claim 2, characterized in that: The generator body (8) has an exhaust pipe (9) on its top surface. The exhaust pipe (9) passes through the inner chamber (11) and the outer wall of the outer chamber (10) in sequence and is connected to the top surface of the exhaust gas filter chamber (3). The exhaust gas filter chamber (3) has an exhaust pipe on its bottom surface. The cover plate and the exhaust gas filter chamber (3) have symmetrical inserts (12) on their upper and lower ends. The exhaust gas filter chamber (3) has slots corresponding to the inserts (12).
4. A noise-reducing diesel generator with a fuel mixture regulation structure according to claim 3, characterized in that: Two spring boxes are symmetrically arranged at the upper and lower ends of the outer wall of the exhaust gas filter chamber (3). A connecting rod is passed through the spring box. A spring is sleeved on the connecting rod and located inside the spring box. A slot is opened on the opposite side of the insert block (12). A corresponding slot is fixed to one end of the connecting rod. A limiting block is fixed to the other end of the connecting rod and located on the outer wall of the spring box. An activated carbon filter screen (17) is placed inside the exhaust gas filter chamber (3).
5. A noise-reducing diesel generator with a fuel mixture regulation structure according to claim 4, characterized in that: The mixing assembly includes two raw material tanks and a mixing tank installed inside the generator body (8). A mixing regulating chamber (15) is installed at an angle in the middle of the top surface of the generator body (8). Two connecting pipes are symmetrically arranged on both sides of one end of the mixing regulating chamber (15) and are respectively connected to the two raw material tanks. A regulating valve (13) is installed on the flange in the middle section of the connecting pipe. A fuel outlet pipe (16) connected to the mixing tank is provided at the other end of the mixing regulating chamber (15).
6. A noise-reducing diesel generator with a fuel mixture regulation structure according to claim 5, characterized in that: The mixing and regulating chamber (15) is equipped with a rotating shaft. Multiple rotating blades (14) are provided around one end of the rotating shaft. One end of each of the two connecting pipes is located on both sides of the rotating blade (14). Multiple spiral fan blades are provided around one end of the rotating shaft (14). Through holes are evenly opened on the surface of the spiral fan blades.