A waste heat storage device based on thermoelectric generator sheet
By combining thermoelectric generators and one-way valves, efficient storage and utilization of thermal energy are achieved, solving the problems of low thermal energy utilization and complicated operation in existing technologies, and reducing labor costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THREE GORGES ELECTRIC POWER JINZHOU ENERGY (HUBEI) CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-31
AI Technical Summary
Existing thermal storage devices have simple structures, low thermal energy utilization rates, and are complex to operate and have high labor costs.
The system employs a thermoelectric generator and a one-way valve structure, combining the thermoelectric generator with the pump body, circulating water pipes, and thermal storage chamber. The thermoelectric generator converts thermal energy into electrical energy, and the one-way valve controls the flow of the hot fluid, simplifying the operation process.
It improves thermal energy utilization, reduces labor costs, simplifies operating procedures, and enhances the efficiency of thermal energy storage and utilization.
Smart Images
Figure CN224580785U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of thermal storage devices, specifically relating to a waste heat storage device based on a thermoelectric generator. Background Technology
[0002] In many industrial production sectors, large amounts of hot waste gas and wastewater are generated. These waste gases and wastewater contain a significant amount of heat, and various heat storage devices have been developed to store and utilize this heat. However, existing heat storage devices have simple structures, and since the hot wastewater and waste gas are in a flowing state, their thermal energy utilization rate is low. Furthermore, in existing heat storage devices, various valves need to be manually operated during water inlet and outlet, and the operating conditions rely on various temperature sensors, resulting in complex parameters and high labor costs. Utility Model Content
[0003] This utility model provides a waste heat storage device based on a thermoelectric generator, which can effectively solve the problems in the background art.
[0004] This utility model provides a waste heat storage device based on a thermoelectric generator, comprising:
[0005] A cylindrical tank with an inlet and an outlet;
[0006] A pump installed inside a tank to discharge fluid from the tank through an outlet;
[0007] The circulating water pipes wound around the tank body;
[0008] A heat storage chamber connected to the outlet of the circulating water pipe;
[0009] A housing with an internal cavity that is connected to the inlet of a circulating water pipe;
[0010] A thermoelectric generator is located at one end of the shell and isolated from the cavity. The hot end of the thermoelectric generator extends into the tank, while the cold end of the thermoelectric generator is located in the cavity. The thermoelectric generator is connected to the pump body.
[0011] And, an inlet pipe that communicates with the cavity and is used for water intake.
[0012] As a further optimization of this utility model, the tank is placed horizontally.
[0013] As a further optimization of this utility model, the inlet and outlet are respectively located on the two end faces of the tank, with the inlet located above the end face and the outlet located below the end face.
[0014] As a further optimization of this utility model, the heat storage chamber is located below the tank body.
[0015] As a further optimization of this utility model, the shell is fixed to the bottom of the tank.
[0016] As a further optimization of this utility model, the water inlet pipe connects from the bottom of the shell to the cavity.
[0017] As a further optimization of this utility model, the inlet of the circulating water pipe is connected from the side of the shell to the cavity.
[0018] According to claim 1, a waste heat storage device based on a thermoelectric generator is characterized in that the heat storage chamber is provided with an insulation layer.
[0019] As a further optimization of this utility model, a one-way valve is provided between the heat storage tank and the circulating water.
[0020] As a further optimization of this utility model, the one-way valve is replaced by a solenoid valve, which is connected to the thermoelectric generator.
[0021] This utility model provides a waste heat storage device based on a thermoelectric generator. The hot fluid is temporarily stored in the tank. When the cold water flows from the circulating water pipe, it fully absorbs the heat of the hot fluid and then discharges the hot fluid, which improves the efficiency of heat energy utilization. Moreover, the drainage is carried out by a mechanism that senses the temperature difference, which eliminates the need to observe various temperature control indicators in the prior art and reduces labor costs. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of this embodiment;
[0023] Figure 2 yes Figure 1 Another perspective structural diagram;
[0024] Figure 3 yes Figure 1 Schematic diagram of partial cross-section structure;
[0025] The components include: tank 1, inlet 1a, outlet 1b, pump body 2, circulating water pipe 3, heat storage chamber 4, shell 5, cavity 5a, thermoelectric generator 6, hot plate end 6a, cold plate end 6b, and water inlet pipe 7. Detailed Implementation
[0026] like Figure 1-3 As shown, this embodiment includes a tank 1, a pump body 2, a circulating water pipe 3, a heat storage chamber 4, a shell 5, a thermoelectric generator 6, and a water inlet pipe 7.
[0027] Tank 1 is cylindrical in shape and is used for temporary storage of hot fluids, including waste gas and wastewater containing heat.
[0028] The tank 1 is placed horizontally, and its two end faces are respectively provided with an inlet 1a and an outlet 1b. The inlet 1a is located above the end face, and the outlet 1b is located below the end face. This structural arrangement of the inlet 1a and outlet 1b can prevent the hot fluid from flowing back at the inlet 1a and also facilitates the complete drainage of the hot fluid. In other embodiments, the inlet 1a and outlet 1b can also be located in the middle of the end face as needed.
[0029] In this embodiment, a pump body 2 is provided inside the tank 1. The output port 1b of the pump body 2 is connected to the outlet 1b of the tank 1. The hot fluid inside the tank 1 can only be discharged when the pump body 2 is started.
[0030] The circulating water pipe 3 is spirally wound around the outer wall of the tank 1, and the outlet of the circulating water pipe 3 is connected to the heat storage chamber 4.
[0031] In this embodiment, the heat storage chamber 4 is used to store hot water. The heat storage chamber 4 is located below the tank body 1. The outlet of the circulating water pipe 3 is connected to the upper end face of the heat storage chamber 4. This arrangement can prevent the hot water in the heat storage chamber 4 from flowing back.
[0032] Furthermore, in this embodiment, a one-way valve is installed between the heat storage chamber 4 and the circulating water pipe 3. The one-way valve can not only prevent the hot water in the heat storage chamber 4 from flowing back, but also prevent the hot air in the heat storage chamber 4 from flowing back to a certain extent.
[0033] The shell 5 has a cavity 5a inside, which is connected to the inlet of the circulating water pipe 3 and is also connected to the inlet pipe 7.
[0034] Cold water enters the cavity 5a of the shell 5 from the inlet pipe 7, and then enters the circulating water pipe 3 from the cavity 5a of the shell 5. The water in the circulating water pipe 3 absorbs the heat emitted by the heat-releasing fluid in the tank 1 during the circulation process, and then is discharged into the heat storage chamber 4 for heat preservation and storage.
[0035] In order to reduce heat loss in the heat storage chamber 4, an insulation layer is also installed inside the heat storage chamber 4 in this embodiment.
[0036] Thermoelectric generator 6 is disposed at one end of the housing 5. In this embodiment, the housing 5 is fixed below the tank 1, the hot end 6a of the thermoelectric generator 6 extends into the tank 1, and the cold end 6b of the thermoelectric generator 6 is disposed in the cavity 5a.
[0037] When cold water enters the cavity 5a of the housing 5, it comes into contact with the cold end 6b of the thermoelectric generator 6, while the hot end 6a of the thermoelectric generator 6 comes into contact with the hot fluid inside the tank 1, thus satisfying the conditions for the thermoelectric generator 6 to convert temperature difference into electrical energy. The thermoelectric generator 6 is connected to the pump body 2.
[0038] Once the heat of the hot fluid inside tank 1 has dissipated and the temperature difference between the inside and outside of tank 1 is uniform, or when the temperature of the hot fluid inside tank 1 reaches the same level as the water temperature in the circulating water pipe 3, pump 2 can then discharge the hot fluid from tank 1. This saves on manual operation steps, reduces labor costs, and improves efficiency. In another embodiment, adjustable flow valves are installed in the pipes at the inlet 1a and outlet 1b of tank 1. By controlling the flow valves, the flow rate of the hot fluid entering and leaving tank 1 is controlled to ensure the residence time of the hot fluid within tank 1.
[0039] Preferably, in this embodiment, the water inlet pipe 7 is connected from the bottom of the housing 5 to the cavity 5a, which can prevent residual water from appearing in the cavity 5a. At the same time, the cold water flowing from bottom to top can make full contact with the cold end 6b of the thermoelectric generator 6 as soon as possible, which can improve the temperature difference effect.
[0040] Furthermore, the inlet of the circulating water pipe 3 is connected from the side of the housing 5 to the cavity 5a, so that the cold water coming out of the inlet pipe 7 accumulates to a certain height in the cavity 5a before entering the circulating water pipe 3, which can ensure that the contact area between the cold end 6b of the thermoelectric generator 6 and the cold water is large enough.
[0041] In another embodiment, the one-way valve is replaced by a solenoid valve, which is connected to the thermoelectric generator 6. When the thermoelectric generator 6 detects that the temperature of the hot fluid in the tank 1 is the same as the temperature of the inlet water, the solenoid valve closes, and the heat storage chamber 4 no longer receives water from the circulating water pipe 3, thus preventing the hot air from flowing back into the heat storage chamber 4 and improving the heat storage effect.
[0042] It should be noted that the descriptions of directions such as up, down, left, right, front, back, top, bottom, tail, horizontal, and vertical in this application are all based on the accompanying drawings and are only used to more clearly express the technical solution, and do not indicate any limitation on the scope of protection.
[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.
Claims
1. A waste heat storage device based on a thermoelectric generator sheet, characterized by, include: A cylindrical tank with an inlet and an outlet; A pump installed inside a tank to discharge fluid from the tank through an outlet; The circulating water pipes wound around the tank body; A thermal storage chamber connected to the outlet of the circulating water pipe; A shell with an internal cavity that is connected to the inlet of a circulating water pipe; A thermoelectric generator is located at one end of the shell and isolated from the cavity. The hot end of the thermoelectric generator extends into the tank, while the cold end of the thermoelectric generator is located in the cavity. The thermoelectric generator is connected to the pump body. And, an inlet pipe that communicates with the cavity and is used for water intake.
2. The waste heat storage device based on thermoelectric generator sheet according to claim 1, characterized in that, The tank is placed horizontally.
3. The waste heat storage device based on thermoelectric generator sheet according to claim 2, characterized in that, The inlet and outlet are located on two end faces of the tank, with the inlet located on the upper end face and the outlet located on the lower end face.
4. The waste heat storage device based on thermoelectric generator sheet according to claim 1, characterized by, The heat storage compartment is located below the tank body.
5. The waste heat storage device based on thermoelectric generator sheet according to claim 1, characterized in that, The shell is fixed to the bottom of the tank.
6. The waste heat storage device based on thermoelectric generator sheet according to claim 5, characterized in that, The water inlet pipe connects from the bottom of the shell to the cavity.
7. The waste heat storage device based on thermoelectric generator sheet according to claim 5, characterized in that, The inlet of the circulating water pipe connects to the cavity from the side of the shell.
8. The waste heat storage device based on thermoelectric generator sheet according to claim 1, characterized by, The thermal storage chamber is equipped with an insulation layer.
9. The waste heat storage device based on thermoelectric generator sheet according to claim 1, characterized by, A one-way valve is installed between the thermal storage tank and the circulating water.
10. The waste heat storage device based on thermoelectric generator sheet according to claim 9, characterized in that, The one-way valve is replaced by a solenoid valve, which is connected to a thermoelectric generator.