New energy special vehicle environmental protection emission reduction purification box

Abstract

The utility model relates to new energy special vehicle technical field, and disclose new energy special vehicle environmental protection emission reduction purification box, including hybrid power engine and emission reduction box body, and hybrid power engine surface is fixed with a plurality of radiating fins, and the emission reduction box body includes expansion water tank, the utility model discloses through the heat exchange element to the radiating fin of hybrid power engine carries out heat conduction, makes the cooling liquid enter the heat exchange element with the heat that takes out through the water inlet pipe, then leaves and enters the expansion water tank by the water outlet pipe, and the expansion water tank prevents the influence that cooling liquid heated volume expansion causes to the pipeline, and the cooling liquid of heating -up simultaneously exchanges with the heat water tank, makes the cooling liquid in the heat water tank heat -up, and even the heat is transmitted to the cooling liquid in the heat exchange water tank, and the heat exchange water tank supplies into the vehicle heating path again, forms heat exchange and heat recovery through water cooling, greatly reduces the waste of heat, thereby reduces the consumption of new energy, improves the endurance of new energy special vehicle, realizes energy -conserving and emission reduction and environmental purification.

Description

Technical Field

[0001] This utility model belongs to the technical field of new energy special vehicles, and specifically relates to the environmental protection and emission reduction purification box for new energy special vehicles. Background Technology

[0002] New energy special-purpose vehicles refer to vehicles that use new energy sources as their power source and are designed specifically for particular operating scenarios. Their power forms cover a variety of types, including hybrid power systems, which are hybrid engines formed by combining a traditional internal combustion engine with an electric motor and a power battery. This power form can utilize the internal combustion engine to ensure range while using the electric motor to assist in reducing energy consumption and emissions, making it suitable for special-purpose vehicle scenarios such as logistics, sanitation, and engineering that have dual requirements for range and power.

[0003] Currently, Chinese utility model patent CN219947832U discloses a waste heat exchanger for a new energy bus. It includes a housing installed inside the vehicle body. The housing has an inner cavity and symmetrically arranged mounting slots. The mounting slots are located on the left side of the inner cavity and are interconnected. The heat exchanger body is connected inside the inner cavity, and a cooling fan unit is installed inside the mounting slot. A top cover is connected to the upper end of the housing. This utility model allows hot air to be introduced into the heat exchanger body through the cooling fan unit, converting the hot air for heating inside the bus, thereby reducing the consumption of new energy sources, improving the bus's range, and achieving energy conservation and emission reduction.

[0004] In the above-disclosed structure, hot air is introduced into the heat exchanger through a cooling fan unit, and the hot air is used for heating inside the bus after conversion. However, this method of conducting hot air to the heat exchanger can convert very little heat. Most of the heat is distributed when the hot air comes into contact with the air, which greatly reduces the amount of heat that can be converted, resulting in a large amount of internal energy being wasted and insufficient heating.

[0005] Furthermore, in summer, the heat generated by the hybrid engine is difficult to dissipate, resulting in a higher failure rate and reducing the service life of new energy special vehicles. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an environmentally friendly emission reduction and purification box for new energy special vehicles.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: an environmental protection and emission reduction purification box for new energy special vehicles, comprising a hybrid power engine and an emission reduction box body. Multiple heat sinks are fixed to the surface of the hybrid power engine. The emission reduction box body includes an expansion tank. A uniform heat exchange tank is fixed to one side of the expansion tank, and a heat exchanger tank is fixed to one side of the uniform heat exchange tank. An inlet pipe and an outlet pipe are fixed to the other side of the expansion tank and one side of the heat exchanger tank, respectively. A heat exchanger is fixed to one end of the inlet pipe of the expansion tank, and one end of the heat exchanger is fixed to one end of the outlet pipe of the expansion tank. The inlet pipe and outlet pipe of the heat exchanger tank are connected to the vehicle's heating system.

[0008] Preferably, the inner wall of the heat exchanger is provided with Z-shaped water channels, the width and height of which are greater than the inner diameter of the inlet pipe and the outlet pipe.

[0009] Preferably, the bends in the inner wall of the Z-shaped waterway are all configured as guide arc surfaces.

[0010] Preferably, the heat exchanger has a bonding groove on its surface, and the inner wall of the bonding groove is bonded to the surface of the heat sink; multiple heat exchangers are fixed at the heat sink of the hybrid power engine.

[0011] Preferably, both ends of the heat exchanger are fixed with fixed ends, and the plurality of fixed ends are respectively fixed to the inlet pipe and outlet pipe of the expansion tank; the fixed ends are configured as hollow frustum shapes, and the maximum diameter of the fixed ends is larger than the inner diameter of the inlet pipe and the heat exchanger, and the inlet pipe and the heat exchanger are fixed with clamps at the fixed ends.

[0012] Preferably, a copper sheet is fixedly attached to the contact surface between the expansion tank and the equalization tank, and a copper sheet is fixedly attached to the contact surface between the equalization tank and the exchange tank.

[0013] Preferably, the top of the hot water tank is fixed with multiple opening and closing valves, the top of the opening and closing valves is fixed with water distribution components, the inner wall of the water distribution components is connected with multiple connecting pipes, and the periphery of the connecting pipes is fixed with heat dissipation components.

[0014] Preferably, a water pump is provided on the inner wall of the water distribution component, one end of the water pump is fixed to one of the opening and closing valves, the other end of the water pump is fixed to a connecting pipe, and the other end of the connecting pipe is fixed to another opening and closing valve.

[0015] In summary, this utility model has the following beneficial effects:

[0016] 1. This utility model uses a heat exchanger to conduct heat to the heat sink of a hybrid engine, allowing the coolant to enter the heat exchanger through the inlet pipe, carrying away heat. The coolant then exits through the outlet pipe and enters the expansion tank, which prevents the coolant from expanding due to heat and affecting the piping. Simultaneously, the heated coolant exchanges heat with the heat exchange tank, raising the temperature of the coolant in the heat exchange tank and uniformly transferring heat to the coolant in the heat exchange tank. The heat exchange tank then supplies the vehicle's heating system, achieving heat exchange and recovery through water cooling. This significantly reduces heat waste, thereby reducing the consumption of new energy sources, improving the range of new energy vehicles, and achieving energy conservation, emission reduction, and environmental purification.

[0017] 2. This utility model significantly increases the contact area between water flow and inner wall within a limited space through the tortuous path of the Z-shaped water channel, thereby improving heat exchange efficiency. Compared with straight channels, the Z-shaped structure can more fully absorb the heat of the heat sink, so that the hybrid power engine always maintains a good operating temperature and improves the stability of equipment use.

[0018] 3. This utility model uses a controllable opening and closing valve, so that when the weather is hot and both the hybrid engine and the passenger compartment need to dissipate heat, the operator can open the valve to allow the coolant in the equalization hot water tank to receive heat from the expansion tank and the heat exchange tank. The coolant then enters the water distribution component and the connecting pipe. The multi-stage heat dissipation layer and the cooling fan of the heat dissipation component quickly cool the coolant in the connecting pipe and return it to the equalization hot water tank to continue to remove heat. This allows the hybrid engine to cool down while the passenger compartment cools down, thus improving the applicability of the equipment. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the heat exchanger of this utility model;

[0021] Figure 3 This is a sectional view of the fixed end of this utility model;

[0022] Figure 4 This is a schematic diagram of the opening and closing valve of this utility model.

[0023] Figure label:

[0024] 1. Hybrid power engine; 101. Radiator;

[0025] 2. Emission Reduction Tank; 201. Expansion Tank; 202. Hot Water Tank; 203. Hot Water Exchanger Tank; 204. Inlet Pipe; 205. Heat Exchanger Components; 206. Outlet Pipe;

[0026] 3. Z-shaped waterway;

[0027] 4. Guide arc surface;

[0028] 5. Fitting groove;

[0029] 6. Fix the end;

[0030] 7. Opening and closing valve; 701. Water distribution component; 702. Heat dissipation component. Detailed Implementation

[0031] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0032] The specific embodiments of this utility model are described below with reference to the accompanying drawings: Example

[0033] refer to Figures 1-4 The new energy special vehicle environmental protection emission reduction and purification box includes a hybrid power engine 1 and an emission reduction box 2. The surface of the hybrid power engine 1 is fixed with multiple heat sinks 101. The emission reduction box 2 includes an expansion tank 201. A heat equalization tank 202 is fixed to one side of the expansion tank 201. A heat exchange tank 203 is fixed to one side of the heat equalization tank 202. An inlet pipe 204 and an outlet pipe 206 are fixed to the other side of the expansion tank 201 and the side of the heat exchange tank 203, respectively. A heat exchange component 205 is fixed to one end of the inlet pipe 204 of the expansion tank 201. One end of the heat exchange component 205 is fixed to one end of the outlet pipe 206 of the expansion tank 201. The inlet pipe 204 and the outlet pipe 206 of the heat exchange tank 203 are connected to the vehicle's heating system.

[0034] Specifically, the heat exchanger 205 conducts heat to the radiator 101 of the hybrid engine 1, allowing the coolant to enter the heat exchanger 205 through the inlet pipe 204 and carry away heat. The coolant then leaves through the outlet pipe 206 and enters the expansion tank 201, which prevents the coolant from expanding due to heat and affecting the piping. Simultaneously, the heated coolant exchanges heat with the heat exchanger 202, raising the temperature of the coolant in the heat exchanger 202 and uniformly transferring heat to the coolant in the heat exchanger 203. The heat exchanger 203 then supplies the coolant into the vehicle's heating system. Through water cooling, heat exchange and heat recovery are achieved, significantly reducing heat waste, thereby reducing the consumption of new energy sources, improving the range of new energy vehicles, and achieving energy conservation, emission reduction, and environmental purification.

[0035] The heat equalization tank 202 balances the heat in the expansion tank 201, preventing a significant increase in the coolant temperature in the expansion tank 201 when the vehicle starts or climbs a hill, thus keeping the heat change in the heat exchange tank 203 within an acceptable range.

[0036] The heat exchanger 205 has a Z-shaped water channel 3 on its inner wall. The width and height of the Z-shaped water channel 3 are greater than the inner diameter of the inlet pipe 204 and the outlet pipe 206. The bends in the inner wall of the Z-shaped water channel 3 are all set as guide arc surfaces 4.

[0037] Specifically, the tortuous path of the Z-shaped water channel 3 significantly increases the contact area between the water flow and the inner wall within a limited space, thereby improving heat exchange efficiency. Compared to straight channels, the Z-shaped structure can more fully absorb the heat from the heat sink, ensuring that the hybrid power engine 1 maintains a good operating temperature and improving equipment stability. The water flow in the Z-shaped water channel 3 frequently changes direction, easily forming turbulent flow rather than steady laminar flow, effectively disrupting the boundary layer and accelerating heat transfer from the solid wall to the fluid, thus increasing the heat transfer coefficient. Furthermore, the Z-shaped water channel 3 can cover a wider area, allowing the coolant to flow evenly through all parts of the heat sink, reducing localized high-temperature areas caused by differences in flow velocity or improper channel layout, and ensuring overall heat dissipation uniformity. Simultaneously, within the same volume of heat sink, the Z-shaped water channel 3 can achieve a longer flow distance through its folded path, making it particularly suitable for space-constrained scenarios without requiring additional component dimensions. The guide arc surface 4 prevents sharp edges from being worn down by the coolant over time, thus reducing strength changes. The guide arc surface 4 also guides the water flow at the edges, preventing dead spots and improving heat exchange efficiency.

[0038] The surface of the heat exchanger 205 is provided with a fitting groove 5, and the inner wall of the fitting groove 5 is fitted with the surface of the heat sink 101; multiple heat exchangers 205 are fixed at the heat sink 101 of the hybrid power engine 1.

[0039] Specifically, by using the bonding groove 5, the heat exchanger 205 and the heat sink 101 are tightly bonded, while maximizing the contact area between the heat exchanger 205 and the heat sink 101, thereby greatly increasing the heat exchange effect of the aluminum or copper heat exchanger 205.

[0040] Both ends of the heat exchanger 205 are fixed with fixed ends 6. Multiple fixed ends 6 are fixed to the inlet pipe 204 and outlet pipe 206 of the expansion tank 201, respectively. The fixed ends 6 are hollow frustum-shaped. The maximum diameter of the fixed ends 6 is larger than the inner diameter of the inlet pipe 204 and the heat exchanger 205. The inlet pipe 204 and the heat exchanger 205 are fixed with clamps at the fixed ends 6.

[0041] Specifically, by fixing the end 6, the connecting pipes such as the inlet pipe 204 or outlet pipe 206 are deformed, which greatly increases the pressure between the connecting pipe and the fixed end 6, thereby improving the fixing effect. Furthermore, the connecting pipes are fixed by clamps to prevent them from detaching and to extend the service life of the equipment.

[0042] A copper sheet is fixedly attached to the contact surface between the expansion tank 201 and the hot water equalization tank 202, and a copper sheet is fixedly attached to the contact surface between the hot water equalization tank 202 and the hot water exchange tank 203.

[0043] Specifically, the better thermal conductivity of copper sheets increases the heat exchange efficiency between the expansion tank 201, the equalization tank 202, and the heat exchange tank 203, preventing heat accumulation.

[0044] Multiple opening and closing valves 7 are fixed to the top of the hot water tank 202. A water distribution component 701 is fixed to the top of the opening and closing valves 7. Multiple connecting pipes are connected to the inner wall of the water distribution component 701. Heat dissipation components 702 are fixed to the periphery of the connecting pipes. A water pump is installed on the inner wall of the water distribution component 701. One end of the water pump is fixed to one opening and closing valve 7, the other end of the water pump is fixed to the connecting pipe, and the other end of the connecting pipe is fixed to another opening and closing valve 7.

[0045] Specifically, through the controllable opening and closing valve 7, when the weather is hot and both the hybrid engine 1 and the passenger compartment need to dissipate heat, the operator opens the valve 7 so that the coolant in the equalization hot water tank 202 receives heat from the expansion tank 201 and the heat exchange tank 203. The coolant then enters the water distribution component 701 and the connecting pipe. The multi-stage heat dissipation layer and cooling fan of the heat dissipation component 702 quickly cool the coolant in the connecting pipe and return it to the equalization hot water tank 202 to continue to remove heat. This allows the hybrid engine 1 to cool down while the passenger compartment also cools down, thus improving the applicability of the equipment. Example

[0046] refer to Figures 1-4 The staff implemented the structure disclosed in this utility model on the Yutong ZK6126CHEVNPG4 hybrid bus;

[0047] A bus company operates this type of bus in the frigid North China region, where winter temperatures reach -20°C. The buses operate for 18 hours daily, covering 320 kilometers. The traditional electric heating system resulted in a 30% reduction in battery range. After installing an environmentally friendly, emission-reducing purification box, the system utilizes waste heat from the Yuchai YC6J200-52 hybrid engine (peak power 147kW) for heating. Four sets of custom-made aluminum alloy heat exchangers (material 6082-T6) are installed at the pre-cast heat sinks (50mm×180mm×6mm, 10mm spacing) in the engine block. The internal Z-shaped water channels have a cross-section of 15mm×18mm and a length of 400mm. R4 guide arc surfaces are machined at bends, and the fitting grooves are ground (tolerance ±0.08mm) and filled with Henkel Loctite 5860 thermally conductive adhesive (thermal conductivity 1.1W / m·K).

[0048] The emission reduction tank adopts a three-stage series structure: the Weibak VPE-15 expansion tank (engineering plastic shell, 15L capacity, 0.2MPa pressure resistance) is connected to the stainless steel heat exchange tank (316L material, 12L capacity) through a 1.0mm thick T2 copper plate. The heat exchange tank is then connected to the plate heat exchanger tank (GEA BL25 type, heat exchange area 1.2m²). The outlet pipe of the heat exchanger tank is connected to the Jingchuang ECL-1200 bus roof-mounted duct heating system.

[0049] The piping system uses Gates PowerGrip HTD hoses (inner diameter Φ20mm), secured with Mahle KL-238 clamps using brass H65 tapered fixing ends (large end Φ28mm). Three SMC VX222 solenoid valves are installed on the top of the hot water tank. The water distribution fittings use stainless steel tees (DN25), connected to parallel aluminum heat dissipation flat tubes (25mm×3mm×1200mm) and integrated with Mitsubishi MF25B fan units (24V / 4.8A×3 units). When starting the vehicle in the freezing cold morning, the -40℃ ethylene glycol coolant flows through the Z-shaped water channel to absorb the engine heat (measured to rise from -15℃ to 62℃ within 75 seconds). After being pressure-stabilized by the expansion tank, it enters the heat exchange tank to equalize the temperature difference (fluctuation ≤2.5℃). The heat exchange tank continuously outputs 65℃ hot liquid to drive the roof-mounted heating system, keeping the 35-seat cabin above 16℃, reducing energy consumption by 9.6kWh per 100 kilometers compared to pure electric heating.

[0050] When the engine compartment temperature exceeds 105℃ in the afternoon during summer, the opening and closing valve is opened to start the Wilo MHI803 water pump (flow rate 22L / min). The 68℃ high-temperature coolant is diverted to the roof cooling flat pipe, and the Mitsubishi fan assembly provides forced cooling with an air volume of 13500m³ / h. The coolant temperature drops to 43℃ within 30 seconds and then flows back, stabilizing the engine compartment temperature at 98±3℃.

[0051] Actual measurements show that the recovered heat in winter conditions is equivalent to 41.7 kWh of electricity per day, which is equivalent to extending the driving range by 37 kilometers. The cooling mode reduces air conditioning power consumption by 18%, resulting in a reduction of 1120 liters of diesel consumption and 2.96 tons of CO2 emissions per vehicle per year. This solution achieves a high reliability operation with a failure rate of 0.5 times per 10,000 kilometers in environments ranging from -25℃ to 42℃ and under continuous slope conditions.

[0052] The working principle of this utility model is as follows: The heat generated by the hybrid engine 1 during operation is conducted through the heat sink 101 to the heat exchanger 205 in the fitting groove 5. The coolant flows from the inlet pipe 204 of the expansion tank 201 into the Z-shaped water channel 3 of the heat exchanger 205. A guide arc surface 4 is provided at the bend to reduce flow resistance. After fully absorbing heat in the tortuous path, the coolant returns to the expansion tank 201 through the outlet pipe 206. The expansion tank 201 transfers heat to the equalization water tank 202 through the copper sheet on the contact surface for temperature equalization. Then, the heat is conducted through the copper sheet to the heat exchange water tank 203, ultimately providing a heat source for the vehicle heating system.

[0053] When heat dissipation is needed in summer, the opening and closing valve 7 on the top of the heat equalization tank 202 is opened, and the water pump drives the high-temperature coolant into the connecting pipe distributed by the water distribution component 701. After being forcibly cooled by the heat dissipation component 702, it flows back to the heat equalization tank 202 to achieve circulating cooling. The fixed end 6 ensures the pipe connection is sealed by the frustum structure and clamps. The expansion tank 201 buffers the thermal expansion pressure of the coolant. The three-stage water tanks work together to achieve waste heat recovery and on-demand heat dissipation.

[0054] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An environmental protection and emission reduction purification box for new energy special vehicles, comprising a hybrid power engine (1) and an emission reduction box body (2), wherein multiple heat sinks (101) are fixed on the surface of the hybrid power engine (1), characterized in that: The emission reduction tank (2) includes an expansion tank (201), a uniform heat tank (202) is fixed on one side of the expansion tank (201), a hot water exchange tank (203) is fixed on one side of the uniform heat tank (202), and an inlet pipe (204) and an outlet pipe (206) are fixed on the other side of the expansion tank (201) and the hot water exchange tank (203). A heat exchanger (205) is fixed to one end of the water inlet pipe (204) of the expansion tank (201), and one end of the heat exchanger (205) is fixed to one end of the water outlet pipe (206) of the expansion tank (201). The inlet pipe (204) and outlet pipe (206) of the hot water tank (203) are connected to the vehicle heating system.

2. The environmental protection and emission reduction purification box for new energy special vehicles according to claim 1, characterized in that: The heat exchanger (205) has a Z-shaped water channel (3) on its inner wall. The width and height of the Z-shaped water channel (3) are greater than the inner diameter of the inlet pipe (204) and the outlet pipe (206).

3. The environmental protection and emission reduction purification box for new energy special vehicles according to claim 2, characterized in that: The inner wall bends of the Z-shaped waterway (3) are all designed with guide arc surfaces (4).

4. The environmental protection and emission reduction purification box for new energy special vehicles according to claim 1, characterized in that: The heat exchanger (205) has a bonding groove (5) on its surface, and the inner wall of the bonding groove (5) is bonded to the surface of the heat sink (101); The hybrid power engine (1) has a plurality of heat exchange components (205) fixed at the heat sink (101).

5. The environmental protection and emission reduction purification box for new energy special vehicles according to claim 1, characterized in that: The heat exchanger (205) has fixed ends (6) at both ends, and the multiple fixed ends (6) are respectively fixed to the inlet pipe (204) and outlet pipe (206) of the expansion tank (201); The fixed end (6) is set as a hollow frustum shape. The maximum diameter of the fixed end (6) is greater than the inner diameter of the water inlet pipe (204) and the heat exchanger (205). The water inlet pipe (204) and the heat exchanger (205) are fixed with clamps at the fixed end (6).

6. The environmental protection and emission reduction purification box for new energy special vehicles according to claim 1, characterized in that: A copper sheet is fixedly attached to the contact surface between the expansion tank (201) and the equalization tank (202), and a copper sheet is fixedly attached to the contact surface between the equalization tank (202) and the exchange tank (203).

7. The environmental protection and emission reduction purification box for new energy special vehicles according to claim 1, characterized in that: The top of the hot water tank (202) is fixed with multiple opening and closing valves (7), the top of the opening and closing valves (7) is fixed with water distribution components (701), the inner wall of the water distribution components (701) is connected with multiple connecting pipes, and the periphery of the connecting pipes is fixed with heat dissipation components (702).

8. The environmental protection and emission reduction purification box for new energy special vehicles according to claim 7, characterized in that: A water pump is provided on the inner wall of the water distribution component (701). One end of the water pump is fixed to one of the opening and closing valves (7), the other end of the water pump is fixed to the connecting pipe, and the other end of the connecting pipe is fixed to another opening and closing valve (7).

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