A structure that uses waste heat from generator exhaust to heat the oil filter inlet

Abstract

This utility model discloses a structure that utilizes the waste heat of generator exhaust to heat the oil filter intake. The generator's main body houses an engine unit and a control box. The engine unit includes a fuel filter and an oil filter, connected to an exhaust manifold. A drain pipe is installed on the exhaust manifold, with its inlet and outlet ends spaced apart and both connected to the interior of the exhaust manifold to form a branch structure. The drain pipe extends to the fuel filter and oil filter, respectively contacting their surfaces to form a heat exchange structure. This allows the exhaust gas to preheat fuel and oil, eliminating the need for additional preheating plugs or heaters, reducing component costs, and fully utilizing the high temperature of the exhaust gas to save energy required for preheating.

Description

Technical Field

[0001] This utility model relates to the field of generator set technology, and in particular to a generator system capable of preheating fuel, engine oil, etc. Background Technology

[0002] Generator sets are commonly used in infrastructure construction, communication sites, and disaster relief, but existing generators encounter several problems when operating in low-temperature environments. For example, diesel fuel viscosity increases and its flowability decreases at low temperatures, leading to poor fuel supply to the fuel system; engine oil thickens, resulting in poor lubrication and increased engine wear. Traditional solutions typically involve installing glow plugs or external heaters, but these solutions have several drawbacks: first, glow plugs only heat the combustion chamber and cannot address the low-temperature issues in fuel lines and engine oil; second, external heaters require additional power, making them unusable in remote areas without external power and significantly complicating the structure; and third, they are complex to operate, requiring manual pre-activation, resulting in a poor user experience. Furthermore, the direct emission of exhaust heat (exhaust temperatures typically reach 300-600℃) wastes energy, and poor fuel flow during cold starts affects combustion efficiency, requiring a long waiting time for the fuel to warm up under load, which also wastes energy. Utility Model Content

[0003] This utility model addresses the shortcomings of existing technologies by providing a structure that utilizes the waste heat of generator exhaust to heat the oil filter inlet, which is simpler in structure, more rational in design, requires no external preheating plug or external heater, and has a better preheating effect.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a structure that uses the waste heat of generator exhaust to heat the oil filter intake port, wherein an engine unit and a control box are provided in the main body of the generator, the engine unit includes a fuel filter and an oil filter and is connected to an exhaust pipe; a drain pipe is provided on the exhaust pipe, the inlet end and the outlet end of the drain pipe are separated by a distance and are both connected to the interior of the exhaust pipe to form a branch structure; the drain pipe extends to the position of the fuel filter and the oil filter and contacts the surface of the fuel filter and the oil filter respectively to form a heat exchange structure.

[0005] Furthermore, the drain tube is spirally wound around the surfaces of the fuel filter and the oil filter to form a spiral segment.

[0006] Furthermore, a smoke outlet connector and a smoke return connector are installed on the wall of the main exhaust pipe. The inlet end of the drain pipe is connected and fixed to the smoke outlet connector, and the outlet end is connected and fixed to the smoke return connector.

[0007] Furthermore, the smoke outlet connector is located on the exhaust pipe near the engine unit, and the smoke return connector is located on the exhaust pipe near the exhaust pipe outlet.

[0008] Furthermore, both the smoke outlet and the smoke return connector are equipped with high-temperature gas resistant solenoid valves as control switches. The diversion pipe is connected to the smoke outlet and the smoke return connector through the solenoid valves, and the solenoid valves are connected to the control box through control lines.

[0009] Furthermore, an insulation bag is installed at the location where the drainage tube has a spiral section, and the insulation bag covers the spiral section of the drainage tube.

[0010] Preferably, the drainage tube is made of copper and wrapped with asbestos insulating tape, which has good toughness.

[0011] The engine unit can also be connected to an air conditioning filter, with the drain pipe extending to the air intake of the air conditioning filter and spiraling into a disc-shaped structure at the air intake of the air conditioning filter.

[0012] Furthermore, after the drain pipe is connected from the smoke outlet connector, it first winds around the fuel filter to form a spiral section, then winds around the oil filter to form a spiral section, and finally connects to the return connector.

[0013] This invention connects a guide pipe to the main exhaust pipe, which then winds around preheating devices such as fuel filters and oil filters. This allows the exhaust gases to preheat the fuel and oil. This eliminates the need for additional glow plugs or heaters, reducing component costs, and fully utilizes the high temperature of the exhaust gases, saving energy required for preheating. Furthermore, the exhaust gases lower their own temperature while preheating the fuel and oil, thus also reducing the overall exhaust gas temperature to some extent. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a partial schematic diagram of the main body of the present utility model.

[0016] In the diagram, 1 is the main body, 2 is the engine unit, 21 is the fuel filter, 22 is the oil filter, 3 is the exhaust pipe, 31 is the exhaust connector, 32 is the return connector, 4 is the solenoid valve, 5 is the drain pipe, 51 is the spiral section, 6 is the control box, and 7 is the control line. Detailed Implementation

[0017] In this embodiment, refer to Figure 1 and Figure 2The structure that uses the waste heat of generator exhaust to heat the oil filter intake port includes an engine unit 2 and a control box 6 installed in the main body 1 of the generator. The engine unit 2 includes a fuel filter 21 (such as a diesel filter) and an oil filter 22 and is connected to an exhaust pipe 3. A drain pipe 5 is installed on the exhaust pipe 3. The inlet end and outlet end of the drain pipe 5 are separated by a distance and are both connected to the interior of the exhaust pipe 3 to form a branch structure. The drain pipe 5 extends to the positions of the fuel filter 21 and the oil filter 22 and contacts the surfaces of the fuel filter 21 and the oil filter 22 respectively to form a heat exchange structure.

[0018] The drain pipe 5 is spirally wound around the surfaces of the fuel filter 21 and the oil filter 22 to form a spiral segment 51.

[0019] A smoke outlet connector 31 and a smoke return connector 32 are provided on the pipe wall of the main smoke exhaust pipe 3. The inlet end of the drainage pipe 5 is connected and fixed to the smoke outlet connector 31, and the outlet end is connected and fixed to the smoke return connector 32.

[0020] The exhaust port 31 is located on the main exhaust pipe 3 near the engine unit 2, and the return port 32 is located on the main exhaust pipe 3 near its outlet. The exhaust gas from the engine unit 2 flows through the exhaust port 31 and into the guide pipe 5, continuing along it. As it flows through the fuel filter 21 and oil filter 22, it is heated, thus preheating the fuel and oil. Finally, the exhaust gas in the guide pipe 5 flows back into the main exhaust pipe 3 through the return port 32.

[0021] Both the smoke outlet connector 31 and the smoke return connector 32 are equipped with high-temperature gas resistant solenoid valves 4 as control switches. The diversion pipe 5 is connected to the smoke outlet connector 31 and the smoke return connector 32 through the solenoid valves 4. The solenoid valves 4 are connected to the control box 6 through the control line 7.

[0022] A heat-insulating bag (not shown) is placed at the location where the spiral section 51 of the drainage tube 5 is located. The heating speed can be improved by covering the spiral section 51 of the drainage tube 5 with the heat-insulating bag.

[0023] The drainage tube 5 is made of copper and wrapped with asbestos insulation material, which has good toughness.

[0024] The engine unit 2 can also be connected to an air conditioning filter. The drain pipe 5 extends to the air inlet of the air conditioning filter and forms a spiral disc structure at the air inlet of the air conditioning filter, similar to a disc-shaped mosquito coil.

[0025] The drain pipe 5 is connected from the smoke outlet connector 31 and first winds around the fuel filter 21 to form a spiral section 51, then winds around the oil filter 22 to form a spiral section 51, and finally connects to the return connector.

[0026] The solenoid valve 4 is powered by the generator's internal starting battery (DC). The control principle involves adding a relay to the control box 6 via a redundant switch output port. When the generator controller detects that the water temperature of engine assembly 2 has reached 60℃ (the water temperature can be adjusted accordingly), the controller disconnects the relay (this switch is normally closed) via a switch output to close solenoid valve 4, preventing overheating. Upon subsequent startup, if the controller detects a water temperature below 60℃, both inlet and outlet solenoid valves 4 will remain open.

[0027] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. A structure for heating the air inlet of an oil filter using the exhaust heat of a generator, wherein an engine unit including fuel and oil filters and connected to an exhaust main pipe, and a control box are provided in a main body of the generator, characterized in that: A drain pipe is installed on the exhaust pipe. The inlet and outlet ends of the drain pipe are separated by a distance and are connected to the interior of the exhaust pipe to form a branch structure. The drain pipe extends to the positions of the fuel filter and the oil filter and contacts the surfaces of the fuel filter and the oil filter respectively to form a heat exchange structure.

2. The structure for heating the air inlet of an oil filter by using the exhaust heat of a generator according to claim 1, characterized in that: The drain tubes are spirally wound around the surfaces of the fuel filter and the oil filter to form spiral segments.

3. The structure for heating the air inlet of an oil filter by using the exhaust heat of a generator according to claim 1, characterized in that: The main exhaust pipe is equipped with an exhaust pipe connector and a return pipe connector. The inlet end of the drain pipe is fixedly connected to the exhaust pipe connector, and the outlet end is fixedly connected to the return pipe connector.

4. The structure for heating the air inlet of an oil filter by using the exhaust heat of a generator according to claim 3, characterized in that: The smoke outlet connector is located on the main exhaust pipe near the engine unit, and the smoke return connector is located on the main exhaust pipe near the exhaust pipe outlet.

5. The structure for heating the air inlet of an oil filter by using the exhaust heat of a generator according to claim 3, characterized in that: Both the smoke outlet and the smoke return connector are equipped with high-temperature gas resistant solenoid valves as control switches. The diversion pipe is connected to the smoke outlet and the smoke return connector through the solenoid valves, and the solenoid valves are connected to the control box through control lines.

6. The structure for heating the air inlet of an oil filter using the exhaust heat of a generator according to claim 2, characterized in that: An insulation bag is placed at the location where the drainage tube has a spiral section, and the insulation bag covers the spiral section of the drainage tube.

7. The structure for heating the oil filter inlet using waste heat from generator exhaust gas according to claim 1, characterized in that: The drainage tube is made of copper and wrapped with asbestos insulation tape.

8. The structure for heating the air inlet of an oil filter using the exhaust heat of a generator according to claim 1, characterized in that: The engine unit is also connected to an air conditioning filter, with the drain pipe extending to the air intake of the air conditioning filter and spiraling into a disc-shaped structure at the air intake of the air conditioning filter.

9. The structure for heating the air inlet of an oil filter using the exhaust heat of a generator according to claim 3, characterized in that: The drain pipe extends from the smoke outlet connector, first winding around the fuel filter to form a spiral section, then winding around the oil filter to form a spiral section, and finally connecting to the return connector.

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