余热回收系统
By designing a waste heat recovery system and using temperature monitoring and controllers to dynamically adjust the gas and water circuits, the problem of solid precipitation and water temperature mismatch in the heat recovery system was solved, thereby improving heat exchange efficiency and the normal use of the water circuit.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GAC TOYOTA MOTOR
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-17
AI Technical Summary
Existing heat recovery systems are difficult to dynamically adjust the water and gas paths, resulting in solids precipitating and adhering to the pipe walls when the exhaust gas temperature is low, and failing to meet usage requirements when the water temperature is too high, thus affecting heat exchange efficiency and the normal use of the water path.
A waste heat recovery system was designed, including a heat exchanger, a gas pipeline network, a water pipeline network, and a controller. The system monitors the waste gas temperature, water temperature, and water tank temperature in real time through a temperature monitor, and controls the opening and closing of valves to achieve dynamic adjustment, thereby preventing the precipitation of solids and maintaining the water temperature within a suitable range.
It enables dynamic adjustment of the gas and water circuits, preventing solid precipitation, ensuring that the water temperature meets usage requirements, and reducing the frequency of gas circuit cleaning and maintenance costs.
Smart Images
Figure CN224517519U_ABST
Abstract
Claims
1. A waste heat recovery system, characterized by, include: Heat exchanger; The gas pipeline network includes an exhaust pipe and parallel intake pipes and bypass pipes. Both the intake pipe and the bypass pipe are connected to the exhaust pipe. The intake pipe includes an intake section and an outlet section, which are connected through the heat exchanger. A main valve is installed in the intake section, a secondary valve is installed in the bypass pipe, and a first temperature monitor is installed in the exhaust pipe. The water pipeline network includes an inlet pipe and a return pipe, which are connected through the heat exchanger. A second temperature monitor is installed on the return pipe. A thermal storage unit includes a water tank and an outlet pipe and an inlet pipe respectively connected to the water tank. The outlet pipe is connected to the inlet pipe, and the inlet pipe is connected to the return pipe. The outlet pipe is equipped with an outlet valve, and the inlet pipe is equipped with an inlet valve. A third temperature monitor is installed inside the water tank. The controller is communicatively connected to the main valve, the secondary valve, the first temperature monitor, the second temperature monitor, the outlet valve, the inlet valve, and the third temperature monitor.
2. The waste heat recovery system of claim 1, wherein, The gas pipeline network also includes a shut-off valve that is communicatively connected to the controller. The shut-off valve is installed in the gas outlet section and opens and closes synchronously with the main valve.
3. The waste heat recovery system of claim 2, wherein, The water pipeline network also includes a flow switch installed on the return water pipe. The flow switch includes a flow sensor and a flow valve. The flow sensor is communicatively connected to the controller and can control the opening and closing of the flow valve. The flow valve opens and closes synchronously with the shut-off valve.
4. The waste heat recovery system of claim 1, wherein, The water pipeline network also includes a pressure control component that is communicatively connected to the controller. The pressure control component includes a pressure detector and a pressure relief valve, which are installed at one end of the return water pipe near the heat exchanger.
5. The waste heat recovery system of claim 4, wherein, The second temperature monitor includes a processing module and at least two temperature probes. The temperature probes are communicatively connected to the processing module, and the processing module is communicatively connected to the controller. The temperature probes are used to detect the temperature of the water in the return water pipe, and the temperature probes are installed on the side of the pressure control component away from the heat exchanger.
6. The waste heat recovery system of claim 1, wherein, The thermal storage unit also includes a level gauge, a water supply pipe, and a water supply valve. The level gauge and the water supply valve are both communicatively connected to the controller. The level gauge is installed in the water tank, the water supply pipe is connected to the water tank, and the water supply valve is installed in the water supply pipe.
7. The waste heat recovery system of claim 6, wherein, The number of the thermal storage units is at least two, and the at least two thermal storage units are arranged in parallel between the inlet pipe and the return pipe.
8. The waste heat recovery system of claim 1, wherein, The water pipeline network also includes a power unit, which is located between the outlet pipe and the inlet pipe. The power unit includes a water pump and a connecting pipe, with both ends of the connecting pipe connected to the outlet pipe and the inlet pipe, respectively.
9. The waste heat recovery system of claim 8, wherein, The number of power units is at least two, and the at least two power units are arranged in parallel.
10. The heat recovery system of claim 1, wherein, The waste heat recovery system also includes air conditioning equipment and circulation pipelines. Both ends of the circulation pipelines are connected to the water tank, and the air conditioning equipment is connected to the circulation pipelines.