CN103259459A - Portable waste heat temperature differential power generation device - Google Patents

Abstract

The invention is a portable waste heat thermoelectric power generation device. It includes the shell and the thermoelectric power generation system. The shell includes the shell bottom plate and the shell; the shell is fixed together with the shell bottom plate through connectors. The thermoelectric power generation system includes a heat-insulating bottom plate, a cooling radiator, a thermoelectric power generation chip, and an energy storage heat exchanger. The cooling radiator and energy storage heat exchanger are placed on the adiabatic bottom plate, and the thermoelectric power generation chip is embedded on the boss of the energy storage heat exchanger, and the cooling radiator, energy storage heat exchanger, and thermoelectric power generation are connected by pressing components. The chip and the heat-insulating bottom plate are fixed together, and the cooling radiator and the energy storage heat exchanger are provided with sealing covers. The heat is transmitted to the hot end of the thermoelectric power generation chip, and the cooling radiator is installed on the cold end of the thermoelectric power generation chip. The invention has the advantages of no noise, small size, light weight, low maintenance cost in the later stage, and low-grade waste heat can be used to generate electricity.

Description

A portable waste heat thermoelectric power generation device

technical field

The invention is a portable waste heat thermoelectric power generation device, which belongs to the innovative technology of the waste heat thermoelectric power generation device.

Background technique

At present, China's urbanization and rapid economic development are accompanied by the generation and discharge of a lot of waste heat, such as: power plants, metallurgy, chemical industries and other industries produce a lot of waste heat. Energy saving and environmental protection are serious problems faced by human beings in the 21st century, and they are also the direction for the development of my country's high-tech industries.

Towards. In recent years, the Party Central Committee has put forward the goals of energy conservation and emission reduction, the creation of a conservation-oriented society, and the concept of green environmental protection. In order to seek energy security and sustainable development of human society, countries around the world have turned their strategic attention to the development of renewable energy. How to realize the effective utilization of waste heat, achieve energy saving and emission reduction, and improve energy utilization rate has become the energy goal and development direction of our country and even the world. However, my country's waste heat utilization technologies such as absorption heat exchange units and heat pump units for waste heat recovery are still in the research and development and small-scale test stage, and because of the limitations of the unit's mechanical components, low efficiency, and high investment costs, it affects the promotion of waste heat utilization. . Semiconductor thermoelectric power generation technology is in the stage of just being introduced; but with the improvement of technology, the price of products has been reduced; but at present, most of the products are only used in military batteries, remote space probes, long-distance communication and navigation, microelectronics, etc. special application areas. The application of thermoelectric power generation technology in industrial and civil industries is quite lacking. Semiconductor thermoelectric conversion materials convert thermal energy into electrical energy, such as low efficiency and low pressure, which are important bottlenecks for the further promotion of thermoelectric power generation technology.

Contents of the invention

The purpose of the present invention is to consider the above problems and provide a portable waste heat thermoelectric power generation device which has no noise during the power generation process, is small in size, light in weight, easy to move, basically does not require maintenance costs in the later stage, and can use low-grade waste heat to generate electricity.

The technical solution of the present invention is: the portable waste heat thermoelectric power generation device of the present invention includes a shell and a thermoelectric power generation system, wherein the shell includes a shell bottom plate and a shell; wherein the shell is placed on the shell bottom plate, and the shell passes through the connecting piece It is fixed together with the bottom plate of the shell, and the thermoelectric power generation system includes a thermal insulation bottom plate, a cooling radiator, a thermoelectric power generation chip, and an energy storage heat exchanger. The cooling radiator and the energy storage heat exchanger are placed on the heat insulation bottom plate, and the thermoelectric power generation chip is embedded On the boss of the energy storage heat exchanger, the cooling radiator, energy storage heat exchanger, thermoelectric power generation chip, and adiabatic bottom plate are fixed together by pressing components, and the cooling radiator and energy storage heat exchanger are installed There is a sealing cover, and the energy storage heat exchanger is equipped with a heat storage working fluid as the heat source of the thermoelectric power generation chip. The energy storage heat exchanger transfers heat to the hot end of the thermoelectric power generation chip through the boss, and the cooling radiator is installed on the The cold end of the power generation chip.

The above pressing assembly includes a first pressing piece and a second pressing piece, one end of the first pressing piece passes through the cooling radiator and is embedded in the mounting hole provided on the heat insulating base plate, the other end of the first pressing piece is connected to the One end of the second pressing part is connected, and the other end of the second pressing part passes through the energy storage heat exchanger and is embedded in the mounting hole provided on the heat insulating bottom plate.

The above-mentioned thermoelectric power generation chip and the boss set on the energy storage heat exchanger are tightly bonded and fixed by heat-conducting silicone grease; They are closely bonded and fixed by thermal conductive silicone grease.

The energy-storage heat exchanger in the portable waste heat thermoelectric power generation device of the present invention stores different energy-storage working fluids, and at the same time transfers the heat in the working fluids to the hot end of the thermoelectric power generation chip through the boss. In addition, in order to reduce the energy loss during the transfer process, high thermal conductivity silicone grease is applied on the contact end surfaces of the boss of the energy storage heat exchanger and the thermoelectric power generation chip, and the boss of the cooling heat exchanger and the thermoelectric power generation chip. The invention adds refrigerant to the cooling heat exchanger, which is beneficial to reduce the temperature of the cold end of the thermoelectric power generation chip; directly increases the temperature difference between the two ends of the thermoelectric power generation chip, indirectly increases the output power, and improves the performance of the power generation system. The energy storage heat exchanger of the present invention is made of materials with low thermal conductivity, and a heat insulating layer is added; it not only prevents the loss of heat, but also prolongs the service life of the power generation device. In addition, the present invention realizes the fixation of each component by adopting the pressing assembly, simplifies the structure, and facilitates assembly and disassembly. The control circuit of the present invention outputs an adjustable voltage of 5-12V through the port provided on the casing, which can charge various small electronic devices such as mobile phones and electronic dictionaries, thereby enhancing the practicability and universality of the portable waste heat thermoelectric power generation device. The invention has no noise in the process of power generation, small size, light weight, convenient movement, basically no maintenance costs in the later stage, and can use low-grade waste heat to generate electricity. Power generation can be widely used in areas where power facilities are not easily accessible. It can provide people with lighting and charging for low-voltage electronic products such as mobile phones in the wild or in areas short of electricity. The invention is a compact design, excellent performance, convenient and practical, and can change waste heat The portable waste heat thermoelectric power generation device for electric energy is a green and environment-friendly power generation device.

Description of drawings

Fig. 1 is an assembly diagram of the thermoelectric power generation module of the present invention.

Fig. 2 is a schematic structural view of the thermal insulation bottom plate of the thermoelectric power generation module of the present invention.

Fig. 3 is a structural schematic diagram of the cooling heat exchanger of the present invention.

Fig. 4 is a schematic structural view of the thermoelectric power generation chip of the present invention.

Fig. 5 is a structural schematic diagram of the compression assembly of the thermoelectric power generation system of the present invention.

Fig. 6 is a structural schematic diagram of the energy storage heat exchanger of the present invention.

Fig. 7 is a schematic structural view of the housing bottom plate of the thermoelectric power generation device of the present invention.

Fig. 8 is a structural schematic diagram of the casing of the thermoelectric power generation device of the present invention.

Fig. 9 is a structural schematic diagram of the fastening screw of the present invention.

Fig. 10 is a structural schematic diagram of the sealing cap of the present invention.

Fig. 11 is an assembly diagram of the thermoelectric power generation device of the present invention.

Detailed ways

Example:

The structure diagram of the present invention is shown in Figures 1, 2, 3, and 4. The portable waste heat thermoelectric power generation device of the present invention includes a casing and a thermoelectric power generation system, wherein the casing includes a casing bottom plate 107 and a casing 801; wherein the casing 801 Placed on the shell bottom plate 107, and the shell 801 is fixed together with the shell bottom plate 107 through the connector 108, the thermoelectric power generation system includes a heat insulating bottom plate 101, a cooling radiator 102, a thermoelectric power generation chip 103, and an energy storage heat exchanger 106 , wherein the cooling radiator 102 and the energy storage heat exchanger 106 are placed on the heat insulating bottom plate 101, the thermoelectric power generation chip 103 is embedded on the boss 603 provided by the energy storage heat exchanger 106, and the cooling radiator 102 is pressed by the pressing assembly. , the energy storage heat exchanger 106, the thermoelectric power generation chip 103, and the heat insulating bottom plate 101 are fixed together, the cooling radiator 102 and the energy storage heat exchanger 106 are provided with a sealing cover 901, and the energy storage heat exchanger 106 is equipped with a thermoelectric power generation chip The heat source of 103 is the heat storage working medium, the energy storage heat exchanger 106 transfers heat to the hot end of the thermoelectric power generation chip 103 through the boss 603 , and the cooling radiator 102 is installed on the cold end of the thermoelectric power generation chip 103 . In this embodiment, the above-mentioned cooling radiator 102 is equipped with a refrigerant capable of dissipating heat transferred from the hot end of the absorbing thermoelectric power generation chip 103 . The output of the thermoelectric power generation chip 103 is connected with the control circuit of the portable waste heat thermoelectric power generation device.

In this embodiment, the above-mentioned connecting member 108 is a screw, and the housing 801 is fixed together with the housing bottom plate 107 by the screw.

In this embodiment, the above-mentioned sealing cover 901 is provided with threads, and the cooling radiator 102 and the energy storage heat exchanger 106 are respectively provided with openings for placing refrigerant and heat storage medium, and the sealing cover 901 is screwed on the On the openings provided by the cooling radiator 102 and the energy storage heat exchanger 106.

The above pressing assembly includes a first pressing member 104 and a second pressing member 105. One end of the first pressing member 104 passes through the cooling radiator 102 and is embedded in the installation hole provided on the heat insulating bottom plate 101. The first pressing member The other end of the piece 104 is connected to one end of the second pressing piece 105 , and the other end of the second pressing piece 105 passes through the energy storage heat exchanger 106 and is embedded in the installation hole provided in the heat insulating bottom plate 101 . In this embodiment, the above-mentioned first pressing member 104 is provided with a pressure groove at the connection end with the second pressing member 105, and the second pressing member 105 is provided with a pressing head correspondingly, and the second pressing member 105 is provided with a pressure groove. The pressing heads are pressed against the pressing grooves provided on the first pressing member 104 to realize mutual connection, and vice versa. the

For ease of installation, the thermoelectric power generation chip 103 is embedded in the groove of the boss 603 provided on the energy storage heat exchanger 106 .

In this embodiment, the above-mentioned thermoelectric power generation chip 103 and the boss 603 provided on the energy storage heat exchanger 106 are closely bonded and fixed by heat-conducting silicone grease; 103 and the boss 301 provided on the cooling radiator 102 are closely combined and fixed by thermal conductive silicone grease.

In this embodiment, the energy storage heat exchanger 106 includes a heat insulation layer 601 and an inner wall layer 602 , wherein the heat insulation layer 601 is closely attached to the outer wall of the energy storage heat exchanger 106 .

In order to ensure good heat dissipation performance, the outer wall of the cooling radiator 102 is provided with fins capable of dissipating heat transferred from the hot end of the absorbing thermoelectric power generation chip 103 .

In addition, the casing 801 of the present invention is also provided with a port 1001. The control circuit in the portable waste heat thermoelectric power generation device of the present invention outputs an adjustable voltage of 5-12V through the port 1001, which can charge various small electronic devices, such as: Mobile phones, electronic dictionaries, etc., can be used by plugging the mobile phones, electronic dictionaries, etc. into the port 1001; the practicability and universality of the portable waste heat thermoelectric power generation device are enhanced.

The working principle of the present invention is as follows: the energy storage heat exchanger 106 recycles various waste heat, and then concentrates the heat through the boss 601 on the surface to the hot end of the thermoelectric power generation chip 103, while the cold end of the thermoelectric power generation chip 106 A cooling heat exchanger 102 is installed, and the cooling heat exchanger 102 dissipates in time the heat transferred from the hot end of the thermoelectric power generation chip 103 through the pad, so that the cold end maintains a certain temperature. There is a certain temperature difference between the two ends of the thermoelectric power generation chip 103, and according to the Seebeck effect, heat energy is converted into electric energy. The generated electric energy passes through the processing circuits such as voltage stabilization or boosting of the control circuit, etc., and is finally output through the port 1001 to charge various electronic products, such as providing energy sources for lighting of low-power LED lamps.

Claims (10)

1. A portable waste heat thermoelectric power generation device, characterized in that it includes a shell and a thermoelectric power generation system, wherein the shell includes a shell bottom plate (107) and a shell (801); wherein the shell (801) is placed on the shell bottom plate (107 ), and the shell (801) is fixed together by the connector (108) and the shell bottom plate (107). The thermoelectric power generation system includes a heat insulating bottom plate (101), a cooling radiator (102), and a thermoelectric power generation chip (103) . The energy storage heat exchanger (106), wherein the cooling radiator (102) and the energy storage heat exchanger (106) are placed on the heat insulating bottom plate (101), and the thermoelectric power generation chip (103) is embedded in the energy storage heat exchanger (106 ) on the boss (603), and the cooling radiator (102), energy storage heat exchanger (106), thermoelectric power generation chip (103), and heat insulation base plate (101) are fixed together by pressing components, cooling A sealing cover (901) is provided on the radiator (102) and the energy storage heat exchanger (106). The energy heat exchanger (106) transfers heat to the hot end of the thermoelectric power generation chip (103) through the boss (603), and the cooling radiator (102) is installed on the cold end of the thermoelectric power generation chip (103). 2. The portable waste heat thermoelectric power generation device according to claim 1, characterized in that the above-mentioned connectors (108) are screws, and the housing (801) is fixed together with the housing bottom plate (107) by screws. 3. The portable waste heat thermoelectric power generation device according to claim 1, characterized in that the sealing cover (901) is screwed onto the cooling radiator (102) and the energy storage heat exchanger (106) by screwing. 4. The portable waste heat thermoelectric power generation device according to claim 1, characterized in that the pressing assembly includes a first pressing member (104) and a second pressing member (105), the first pressing member (104) One end of the first pressing piece (104) is connected to one end of the second pressing piece (105), and the second pressing piece (105) The other end of the pressing piece (105) passes through the energy storage heat exchanger (106) and is embedded in the mounting hole provided on the heat insulating bottom plate (101). 5. The portable waste heat thermoelectric power generation device according to claim 4, characterized in that the first pressing part (104) is provided with a pressure groove at the connection end with the second pressing part (105), and the second pressing part (105) is correspondingly provided with a pressing head, and the pressing head provided on the second pressing part (105) is pressed against the pressing groove provided on the first pressing part (104) to realize mutual connection, and vice versa. 6. The portable waste heat thermoelectric power generation device according to claim 1, characterized in that the thermoelectric power generation chip (103) is embedded in the groove of the boss (603) of the energy storage heat exchanger (106). 7. The portable waste heat thermoelectric power generation device according to any one of claims 1 to 6, characterized in that there is a gap between the thermoelectric power generation chip (103) and the boss (603) on the energy storage heat exchanger (106) Tightly combined and fixed by heat-conducting silicone grease; the above-mentioned cooling radiator (102) is provided with a boss (301), and the thermoelectric power generation chip (103) and the boss (301) on the cooling radiator (102) are evenly spaced. Tightly combined and fixed by thermal grease. 8. The portable waste heat thermoelectric power generation device according to claim 7, characterized in that the energy storage heat exchanger (106) includes a heat insulation layer (601) and an inner wall layer (602), wherein the heat insulation layer (601) is tightly Paste the outer wall of the energy storage heat exchanger (106). 9. The portable waste heat thermoelectric power generation device according to claim 8, characterized in that the outer wall of the cooling radiator (102) is provided with fins capable of dissipating heat transferred from the hot end of the absorbing thermoelectric power generation chip (103). 10. The portable waste heat thermoelectric power generation device according to claim 9, characterized in that the cooling radiator (102) is equipped with a refrigerant capable of dissipating heat transferred from the hot end of the absorbing thermoelectric power generation chip (103).

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