Tail gas waste heat exchange device of diesel heating machine

Abstract

The utility model discloses a tail gas waste heat exchange device of a diesel heating machine, which comprises the diesel heating machine, a heat exchanger is arranged on the diesel heating machine, a tail gas exhaust pipe of the diesel heating machine is connected with the heat exchanger, two sides of the heat exchanger are connected with circulating water pipes, and the circulating water pipes are connected with a water pump and are connected with an inlet and an outlet of the heat exchanger to form a closed loop. The closed loop is further provided with a circulating water pump and a battery pack heating disc, after a vehicle enters the vehicle in cold winter, the diesel heating machine and the water pump are started firstly, the diesel heating machine works to generate heat, the temperature in a cabin of the vehicle rises, the defrosting effect and the like are achieved, tail gas waste heat generated when the diesel heating machine works is guided into the heat exchanger, and the heat exchange effect is achieved. And the circulating water is heated by the heat exchanger, and when the circulating water passes through the battery pack heating disc, the low-temperature battery pack is heated, so that the waste heat of the firewood heating machine is recycled.

Description

Technical Field

[0001] This utility model relates to the automotive field, specifically a waste heat exchange device for diesel engine exhaust gas. Background Technology

[0002] New energy vehicles are becoming increasingly popular and entering more and more people's daily lives. Currently, there are two common types of battery packs used in new energy vehicles: ternary lithium batteries and lithium iron phosphate batteries. They share a common characteristic: their energy release is affected by the weather temperature. The lower the temperature, the lower the energy release. In winter, when the driver's cab of a new energy vehicle needs to be heated by an electric heat pump, the heat pump consumes a lot of electricity, causing the battery pack to drain very quickly and resulting in a significant reduction in range. Therefore, in addition to relying on its own battery for heating, parking heaters are increasingly being used for heating.

[0003] Parking heaters are vehicle-mounted heating devices independent of the vehicle's own power source. They have their own fuel lines, electrical circuits, combustion heating devices, and control devices. Using parking heaters to provide heating in new energy vehicles eliminates the need to consume battery power, ensuring the vehicle's range. Diesel engines are one of the most commonly used parking heaters. However, when a diesel engine is working, the exhaust air carries away a significant portion of the waste heat, resulting in waste. Therefore, a waste heat exchange device for diesel engine exhaust gas is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a waste heat exchange device for diesel engine exhaust gas to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A waste heat exchange device for diesel engine exhaust includes a diesel engine installed in the cabin of a car. The diesel engine is equipped with a heat exchanger. The exhaust pipe of the diesel engine is connected to the heat exchanger. Circulating water pipes are connected to both sides of the heat exchanger. The circulating water pipes are connected to a water pump and to the inlet and outlet of the heat exchanger to form a closed loop. A water tank is also connected in the closed loop. The closed loop is also equipped with a battery heating plate.

[0007] As a further embodiment of this utility model: the diesel heater is connected to the fuel tank via a fuel pipeline, the fuel tank is installed in the front engine compartment of the vehicle, and the circuit and control device of the diesel heater are installed in the passenger compartment of the vehicle.

[0008] As a further improvement of this utility model: the battery heating plate is provided with a folded circulating water pipe, and the battery heating plate is located at the vehicle battery.

[0009] As a further improvement of this utility model: the water tank is also connected to an antifreeze tank, which is filled with antifreeze.

[0010] As a further improvement of this utility model: the circulating water pipe passes through a branch pipe to the seat cushion or backrest, and the branch pipe is equipped with a solenoid valve for control.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] Upon entering the vehicle in cold weather, the diesel heater and water pump are turned on first. The diesel heater generates heat, raising the temperature inside the rider's cabin and also serving a defrosting function. The exhaust gas produced by the diesel heater can reach a temperature of about 300℃ when it passes through the exhaust port. This exhaust gas is then guided into the heat exchanger, which heats the circulating water. As the circulating water passes through the battery heating plate, it preheats the low-temperature battery, thus utilizing the waste heat from the diesel heater. This allows the vehicle's battery temperature to be maintained between 15-30℃, effectively solving the problem of new energy vehicles not being able to fully utilize their power in cold weather, and maximizing the range of new energy vehicles in low-temperature environments. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the waste heat exchange device for diesel engine exhaust gas.

[0014] The components include: 1. Diesel engine; 2. Heat exchanger; 3. Exhaust pipe; 4. Exhaust port; 5. Water tank; 6. Water pump; 7. Circulating water pipe; 8. Battery heating plate; 9. Exhaust control valve. Detailed Implementation

[0015] Please see Figure 1 In this embodiment of the utility model, a waste heat exchange device for diesel engine exhaust includes a diesel engine 1 installed in the cabin of a car. The diesel engine 1 is connected to a fuel tank 4 through a fuel line 3. The fuel tank 4 is installed in the front engine compartment of the car. The circuit, control device, etc. of the diesel engine 1 are all installed in the cabin of the car. The fuel tank is filled with diesel fuel required for the operation.

[0016] The diesel heater 1 is equipped with a heat exchanger 2. The exhaust pipe 3 of the diesel heater 1 is connected to the heat exchanger 2. The heat exchanger 2 is connected to both sides by circulating water pipes 7. The circulating water pipes are connected to a water pump 6 and to the inlet and outlet of the heat exchanger 2 to form a closed loop. The closed loop is also connected to a water tank 5. The closed loop is also equipped with a battery heating plate 8. The battery heating plate 8 is equipped with folded circulating water pipes 7. The battery heating plate 8 is located at the vehicle battery. The vehicle battery pack is heated through the battery heating plate 8. The heat exchanger 2 is also equipped with several exhaust ports 4. Each exhaust port is equipped with an exhaust control valve 9.

[0017] The water tank 5 is also connected to an antifreeze tank, which is filled with antifreeze. After entering the circuit, the antifreeze prevents freezing, boiling, corrosion, and scale buildup, ensuring the effectiveness of the circulation pipeline.

[0018] The water pump 6, water tank 5, and antifreeze tank are all installed in the front engine compartment of the vehicle. The controller for the water pump, which is connected to the circuit, is located in the cabin. Preferably, it is installed near the control device of the diesel engine 1 for easy operation.

[0019] In addition, the circulating water pipe 7 can also pass through the seat cushion or backrest via a branch pipe. The branch pipe is equipped with a solenoid valve for control, so that when the temperature is low, the hot water can be passed through the branch by opening the branch solenoid valve to heat the seat cushion or backrest, thereby improving its functionality.

[0020] The working principle of this utility model is as follows:

[0021] Upon entering the vehicle in cold weather, the diesel heater 1 and water pump 6 are turned on first. The diesel heater 1 generates heat, raising the temperature inside the car cabin and performing defrosting functions. The exhaust gas produced by the diesel heater 1 reaches a temperature of about 300℃ at the exhaust outlet. This exhaust gas is then guided into the heat exchanger 2, which heats the circulating water. When the circulating water 7 passes through the battery pack heating plate 8, it preheats the low-temperature battery, thus utilizing the waste heat of the diesel heater 1. This allows the vehicle battery temperature to be maintained between 15-30℃, effectively solving the problem of new energy vehicles being unable to release heat in cold weather and maximizing the range of new energy vehicles in low-temperature environments.

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "vertical," and "horizontal," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for heat exchange of exhaust gas waste heat of a diesel heater, comprising a diesel heater (1) installed in a vehicle cabin, characterized in that, The heat exchanger (2) is arranged on the diesel heater (1), the tail gas exhaust pipe (3) of the diesel heater (1) is connected with the heat exchanger (2), the heat exchanger (2) is connected with the circulating water pipe (7) on both sides, the circulating water pipe is connected with the water pump (6) and the inlet and outlet of the heat exchanger (2) to form a closed loop circuit, the closed loop circuit is further connected with the water tank (5), and the closed loop circuit is further provided with the battery heating disc (8).

2. The device according to claim 1, wherein, The diesel heater (1) is connected with the fuel tank through the fuel pipeline, the fuel tank is installed in the front cabin of the automobile, and the circuit and the control device of the diesel heater (1) are installed in the automobile cabin.

3. The device according to claim 1, wherein, The battery heating disc (8) is provided with the folded circulating water pipe (7), and the battery heating disc (8) is located at the vehicle battery.

4. The device according to claim 1, wherein, The water tank (5) is further connected with the anti-freezing liquid tank, and the anti-freezing liquid is injected into the anti-freezing liquid tank.

5. The device according to claim 1, wherein The circulating water pipe (7) passes through the seat cushion or backrest through the branch pipe, and the electromagnetic valve for control is arranged on the branch pipe.

Images