Thermoelectric power generation device for hot drain water

Abstract

A thermoelectric generator for hot water drainage comprises a frame-type shell with wallless sides and openwork top and bottom. Inlet and outlet baffles are sealed and fixedly connected to the left and right sides of the frame-type shell, and the baffles have inlet and outlet ports. A thermally conductive baffle is sealed and fixedly connected to the top and bottom of the frame-type shell, and a thermoelectric transducer assembly is fixed to the inner surface of the thermally conductive baffle using thermally conductive silicone. A heat dissipation baffle is located outside the thermoelectric transducer assembly, and the thermoelectric transducer assembly is fixedly connected to the inner surface of the heat dissipation baffle using thermally conductive silicone. The heat dissipation baffle is sealed and fixedly connected to the top and bottom of the frame-type shell. Heat dissipation fins are provided on the outer surface of the heat dissipation baffle. Wiring grooves are provided within the openwork mesh at the top and bottom of the frame-type shell, and the wires of the thermoelectric transducer assembly are led outwards along these grooves, with the wire exit points sealed. The inner surface of the frame-type shell is smooth or has thermally conductive fins. The thermoelectric transducers within the thermoelectric transducer assembly are connected in series or parallel. An expansion connection frame is provided on the inlet and outlet baffles.

Description

Technical Field

[0001] This invention belongs to the field of energy recovery technology, and in particular relates to a thermoelectric power generation device for heat-containing wastewater. Background Technology

[0002] In industrial and agricultural production, wastewater containing heat exceeding room temperature is frequently generated. Currently, the treatment of this wastewater mainly includes the following two methods. The first method is to cool the wastewater through a cooling tower and then recycle it directly. The second method is to discharge the wastewater into a cooling water pool for natural cooling and then recycle it, or to carry out environmental treatment and then recycle it, or to discharge it into the natural environment.

[0003] When hot wastewater is discharged into a cooling water tank, the high-temperature wastewater usually mixes directly with the cooler water in the tank, thus wasting the energy from the temperature difference between the two. Therefore, if the energy from the temperature difference between the high-temperature wastewater and the cool water in the tank can be recovered and utilized during the heat transfer process between the hot and cold water, this energy difference can be fully utilized.

[0004] However, traditional thermoelectric energy recovery devices typically require complex mechanical structures and large temperature differences, which limits their application in many scenarios. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention provides a thermoelectric power generation device for heat-dissipated wastewater, which has a simpler mechanical structure, reduces the temperature difference requirement, and expands the application scenarios for thermoelectric energy recovery and utilization.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a thermoelectric generator for heat-dissipating wastewater, comprising a frame-type shell, a first inlet / outlet baffle, a second inlet / outlet baffle, a first thermally conductive baffle, a first thermoelectric transducer assembly, a first heat dissipation baffle, a second thermally conductive baffle, a second thermoelectric transducer assembly, and a second heat dissipation baffle; the left and right sides of the frame-type shell are wall-less structures, and the upper and lower ends of the frame-type shell are hollow structures; the first inlet / outlet baffle is sealed and fixedly connected to the left side of the frame-type shell, and a first inlet / outlet is provided on the plate of the first inlet / outlet baffle; the second inlet / outlet baffle is sealed and fixedly connected to the right side of the frame-type shell, and a second inlet / outlet is provided on the plate of the second inlet / outlet baffle; the first thermally conductive baffle is sealed and fixedly connected to the upper end of the frame-type shell. The first temperature difference transducer assembly is fixed to the upper surface of the first thermally conductive partition plate using thermally conductive silicone. The first heat dissipation baffle is located above the first temperature difference transducer assembly, and the first temperature difference transducer assembly is fixedly connected to the lower surface of the first heat dissipation baffle using thermally conductive silicone. The first heat dissipation baffle is sealed and fixedly connected to the upper end of the frame-type housing. The second thermally conductive partition plate is sealed and fixedly connected to the lower end of the frame-type housing, and the second temperature difference transducer assembly is fixed to the lower surface of the second thermally conductive partition plate using thermally conductive silicone. The second heat dissipation baffle is located below the second temperature difference transducer assembly, and the second temperature difference transducer assembly is fixedly connected to the upper surface of the second heat dissipation baffle using thermally conductive silicone. The second heat dissipation baffle is sealed and fixedly connected to the lower end of the frame-type housing. Heat dissipation fins are provided on the upper surface of the first heat dissipation baffle and the lower surface of the second heat dissipation baffle.

[0007] Wiring grooves are provided in the hollowed-out mesh entities at the upper and lower ends of the frame-type housing. The wires of the first temperature difference transducer group are led out to the outside of the device along the wiring groove at the upper end of the frame-type housing, and the wires of the second temperature difference transducer group are led out to the outside of the device along the wiring groove at the lower end of the frame-type housing. The wire leading-out positions are sealed.

[0008] The inner surface of the frame-type housing is a smooth surface or is provided with heat-conducting fins.

[0009] The frame-type shell, the first inlet / outlet baffle, and the second inlet / outlet baffle are made of materials with poor thermal conductivity.

[0010] The first thermally conductive baffle, the first heat dissipation baffle, the second thermally conductive baffle, and the second heat dissipation baffle are made of materials with good thermal conductivity.

[0011] The temperature difference transducers in the first and second temperature difference transducer groups are connected in series or in parallel.

[0012] An extension connecting frame is provided at each of the four corners of the first and second inlet / outlet baffles.

[0013] The expansion connector adopts a snap-fit ​​connection structure or a chip-connection structure.

[0014] The aforementioned thermoelectric generators for hot drainage are connected in series or in parallel, and adjacent thermoelectric generators are fixedly connected together by an extension connecting frame.

[0015] The beneficial effects of this invention are:

[0016] The thermoelectric power generation device for hot water drainage of the present invention has a simpler mechanical structure, reduces the temperature difference requirement, and expands the application scenarios of thermoelectric energy recovery and utilization. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a thermoelectric generator for heat-dissipated drainage according to the present invention (the extension connection frame adopts a snap-fit ​​connection structure);

[0018] Figure 2 This is an exploded view of a thermoelectric generator with hot water drainage according to the present invention (the extension connection frame adopts a snap-fit ​​connection structure);

[0019] Figure 3 This is a schematic diagram of the structure of a thermoelectric generator for heat-dissipated drainage according to the present invention (the extension connection frame adopts a piece-connection structure);

[0020] Figure 4 This is a diagram showing the working state of a thermoelectric generator (with an extension frame using a snap-fit ​​connection structure) for hot water drainage according to the present invention in a cooling water tank.

[0021] In the figure, 1—frame shell, 2—first inlet / outlet baffle, 3—second inlet / outlet baffle, 4—first heat-conducting baffle, 5—first thermoelectric transducer assembly, 6—first heat dissipation baffle, 7—second heat-conducting baffle, 8—second thermoelectric transducer assembly, 9—second heat dissipation baffle, 10—first inlet / outlet, 11—second inlet / outlet, 12—heat sink, 13—cable tray, 14—extension connection frame, 15—cooling water pool, 16—heated drainage, 17—thermal power generation device. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1-4As shown, a thermoelectric generator for heat-dissipating wastewater includes a frame-type housing 1, a first inlet / outlet baffle 2, a second inlet / outlet baffle 3, a first thermally conductive baffle 4, a first thermoelectric transducer assembly 5, a first heat dissipation baffle 6, a second thermally conductive baffle 7, a second thermoelectric transducer assembly 8, and a second heat dissipation baffle 9. The left and right sides of the frame-type housing 1 are wall-less, while the upper and lower ends are hollow. The first inlet / outlet baffle 2 is sealed and fixedly connected to the left side of the frame-type housing 1, and a first inlet / outlet 10 is provided on the plate of the first inlet / outlet baffle 2. The second inlet / outlet baffle 3 is sealed and fixedly connected to the right side of the frame-type housing 1, and a second inlet / outlet 11 is provided on the plate of the second inlet / outlet baffle 3. The first thermally conductive baffle 4 is sealed and fixedly connected to the upper end of the frame-type housing 1, and the first thermally conductive baffle 4 is sealed and fixedly connected to the upper end of the frame-type housing 1. The differential transducer assembly 5 is fixed to the upper surface of the first thermally conductive baffle 4 by thermally conductive silicone; the first heat dissipation baffle 6 is located above the first differential transducer assembly 5, and the first differential transducer assembly 5 is fixedly connected to the lower surface of the first heat dissipation baffle 6 by thermally conductive silicone, and the first heat dissipation baffle 6 is sealed and fixedly connected to the upper end of the frame housing 1; the second thermally conductive baffle 7 is sealed and fixedly connected to the lower end of the frame housing 1, and the second differential transducer assembly 8 is fixed to the lower surface of the second thermally conductive baffle 7 by thermally conductive silicone; the second heat dissipation baffle 9 is located below the second differential transducer assembly 8, and the second differential transducer assembly 8 is fixedly connected to the upper surface of the second heat dissipation baffle 9 by thermally conductive silicone, and the second heat dissipation baffle 9 is sealed and fixedly connected to the lower end of the frame housing 1; heat dissipation fins 12 are provided on the upper surface of the first heat dissipation baffle 6 and the lower surface of the second heat dissipation baffle 9.

[0024] Wiring grooves 13 are provided in the hollowed-out mesh entities at the upper and lower ends of the frame housing 1. The wires of the first temperature difference transducer group 5 are led out to the outside of the device along the wiring groove 13 at the upper end of the frame housing 1, and the wires of the second temperature difference transducer group 8 are led out to the outside of the device along the wiring groove 13 at the lower end of the frame housing 1. The wire leading-out positions are sealed.

[0025] The inner surface of the frame-type housing 1 is a smooth surface or is provided with heat-conducting fins.

[0026] The frame-type shell 1, the first inlet / outlet baffle 2, and the second inlet / outlet baffle 3 are made of materials with poor thermal conductivity, such as nylon and ABS plastic.

[0027] The first thermally conductive baffle 4, the first heat dissipation baffle 6, the second thermally conductive baffle 7, and the second heat dissipation baffle 9 are made of materials with good thermal conductivity, such as aluminum plates and copper plates.

[0028] The temperature difference transducers in the first temperature difference transducer group 5 and the second temperature difference transducer group 8 are connected in series or in parallel.

[0029] An extension connecting frame 14 is provided at the four corners of the first inlet / outlet baffle 2 and the second inlet / outlet baffle 3.

[0030] The extension connector 14 adopts a snap-fit ​​connection structure or a piece-joint connection structure. When the piece-joint connection structure is adopted, the extension connector 14 can be manufactured by bending ordinary steel sheets, which can further reduce manufacturing costs.

[0031] The thermoelectric generators used for hot drainage are connected in series or in parallel. Adjacent thermoelectric generators are fixedly connected together by an extension connecting frame 14 to avoid collisions between the frame housing 1 and the heat sink 12.

[0032] The following describes a single use of the present invention with reference to the accompanying drawings:

[0033] like Figure 4 As shown, the thermoelectric generators 17 in the cooling water tank 15 are arranged in three layers. Each layer has sixteen thermoelectric generators 17 arranged in four rows. Each row has four thermoelectric generators 17 connected in series. The four rows of thermoelectric generators 17 are connected in parallel to achieve centralized water inlet and outlet. In this embodiment, Figure 4 The left side of the diagram represents the inlet side containing heated drainage, while the right side represents the outlet side. When using... Figure 4 The connection structure shown can further reduce drainage resistance and increase the effective cross-sectional area of ​​drainage by connecting four rows in parallel, while connecting a single row in series can further increase the residence time of the heat-containing drainage in the thermoelectric generator 17 and increase the utilization rate of thermoelectric energy.

[0034] For the thermoelectric generator 17 in a single layer, the hot wastewater will be divided into four streams and enter the four-row thermoelectric generator 17 connected in series after being centrally fed. When the hot wastewater enters the single-row thermoelectric generator 17, it will pass through the four thermoelectric generator 17 in sequence to generate electricity. After that, the four streams of hot wastewater will be re-centralized into one stream and discharged.

[0035] When the heated wastewater passes through a separate thermoelectric generator 17, it is still in the form of... Figure 4Taking the flow direction of the heated wastewater as an example, the heated wastewater first enters the frame-type shell 1 through the first inlet / outlet 10 of the first inlet / outlet baffle 2. The heated wastewater transfers its high temperature to the first temperature difference transducer group 5 through the first thermally conductive baffle 4, and simultaneously transfers its high temperature to the second temperature difference transducer group 8 through the second thermally conductive baffle 7. Since the thermoelectric generator is completely immersed in the cooling water pool 15, the cooling water in the cooling water pool 15 transfers its low temperature to the first temperature difference transducer group 5 through the heat sink 12 and the first heat sink baffle 6, and simultaneously transfers its low temperature to the second temperature difference transducer group 8 through the heat sink 12 and the second heat sink baffle 9. At this time, the first temperature difference transducer group 5 and the second temperature difference transducer group 8 generate electricity under the action of temperature difference, and the generated electricity is output through wires. After flowing through the frame-type shell 1, the heated wastewater flows out through the second inlet / outlet 11 of the second inlet / outlet baffle 3.

[0036] The solutions described in the embodiments are not intended to limit the scope of patent protection of this invention. All equivalent implementations or modifications that do not depart from the scope of this invention are included in the patent scope of this case.

Claims

1. A thermoelectric generator for use in hot wastewater discharge, characterized in that: The system includes a frame-type shell, a first inlet / outlet baffle, a second inlet / outlet baffle, a first thermally conductive baffle, a first temperature difference transducer assembly, a first heat dissipation baffle, a second thermally conductive baffle, a second temperature difference transducer assembly, and a second heat dissipation baffle. The left and right sides of the frame-type shell are wall-less, while the upper and lower ends are openwork. The first inlet / outlet baffle is sealed and fixedly connected to the left side of the frame-type shell, and a first inlet / outlet is provided on the baffle plate. The second inlet / outlet baffle is sealed and fixedly connected to the right side of the frame-type shell, and a second inlet / outlet is provided on the baffle plate. The first thermally conductive baffle is sealed and fixedly connected to the upper end of the frame-type shell, and the first temperature difference transducer assembly is connected via thermally conductive silicon. The first heat dissipation baffle is fixed to the upper surface of the first thermally conductive baffle with adhesive. The first heat dissipation baffle is located above the first temperature difference transducer assembly, which is fixedly connected to the lower surface of the first heat dissipation baffle via thermally conductive silicone. The first heat dissipation baffle is sealed and fixedly connected to the upper end of the frame-type housing. The second thermally conductive baffle is sealed and fixedly connected to the lower end of the frame-type housing, and the second temperature difference transducer assembly is fixed to the lower surface of the second thermally conductive baffle with thermally conductive silicone. The second heat dissipation baffle is located below the second temperature difference transducer assembly, which is fixedly connected to the upper surface of the second heat dissipation baffle via thermally conductive silicone. The second heat dissipation baffle is sealed and fixedly connected to the lower end of the frame-type housing. Heat dissipation fins are provided on the upper surface of the first heat dissipation baffle and the lower surface of the second heat dissipation baffle.

2. The thermoelectric generator for heat-dissipated wastewater as described in claim 1, characterized in that: Wiring grooves are provided in the hollowed-out mesh entities at the upper and lower ends of the frame-type housing. The wires of the first temperature difference transducer group are led out to the outside of the device along the wiring groove at the upper end of the frame-type housing, and the wires of the second temperature difference transducer group are led out to the outside of the device along the wiring groove at the lower end of the frame-type housing. The wire leading-out positions are sealed.

3. A thermoelectric generator for heat-dissipating wastewater according to claim 1, characterized in that: The inner surface of the frame-type housing is a smooth surface or is provided with heat-conducting fins.

4. A thermoelectric generator for heat-dissipating wastewater according to claim 1, characterized in that: The frame-type shell, the first inlet / outlet baffle, and the second inlet / outlet baffle are made of materials with poor thermal conductivity.

5. A thermoelectric generator for heat-dissipated wastewater as described in claim 1, characterized in that: The first thermally conductive baffle, the first heat dissipation baffle, the second thermally conductive baffle, and the second heat dissipation baffle are made of materials with good thermal conductivity.

6. A thermoelectric generator for heat-dissipating wastewater according to claim 1, characterized in that: The temperature difference transducers in the first and second temperature difference transducer groups are connected in series or in parallel.

7. A thermoelectric generator for heat-dissipating wastewater according to claim 1, characterized in that: An extension connecting frame is provided at each of the four corners of the first and second inlet / outlet baffles.

8. A thermoelectric generator for heat-dissipated wastewater as described in claim 7, characterized in that: The expansion connector adopts a snap-fit ​​connection structure or a chip-connection structure.

9. A thermoelectric generator for heat-dissipated wastewater as described in claim 7, characterized in that: Thermoelectric generators are connected in series or in parallel, and adjacent thermoelectric generators are fixedly connected together by an extension bracket.

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