KR101321010B1 - Independent power supply device use thermoelectric generation - Google Patents

Abstract

The present invention relates to an independent power supply using thermoelectric power generation, the present invention comprises a burner device for burning fuel; A communication connected to the burner device to exhaust combustion gas; A thermoelectric generator module provided on the communication surface with a plurality of heating sides to generate an electromotive force by a temperature difference between the heating side and the cooling side; A cooling device for cooling the cooling side of the thermoelectric power module; And a power converter electrically connected to the thermoelectric generator module to convert output power.
According to the present invention, the heating side of the thermoelectric generator module is heated by the combustion gas of high temperature, and the cooling side of the thermoelectric generator module is cooled by a separate cooling device to increase the output of the electromotive force according to a large temperature difference. It can be used as a power source or an emergency power source, has a low cost of maintenance due to its simple structure, can be used as an alternative energy, and maximizes energy efficiency by recovering and reusing waste and waste heat in addition to artificial heat sources by a boiler. There is.

Description

Independent power supply using thermoelectric power generation {INDEPENDENT POWER SUPPLY DEVICE USE THERMOELECTRIC GENERATION}

The present invention relates to an independent power supply using thermoelectric power generation, and more particularly, to an independent power supply using thermoelectric power generation using thermoelectric power generation using Seebeck's principle.

In order to prevent natural disasters caused by global warming and extreme weather, the regulation of emission of carbon dioxide has been tightened, and along with the demand for clean energy, fuel cell power generation and thermoelectric power generation have been introduced.

Thermoelectric power generation converts heat into electricity by using integrated thermoelectric semiconductors, which can produce electricity directly from natural heat such as waste heat, solar heat, geothermal heat, and river water generated in incinerators and various industrial facilities. In addition to the emission of environmentally harmful gases, noise does not occur, and has been in the spotlight recently as a semi-permanent clean electricity generator.

Techniques related to such a facility using thermoelectric power have been proposed in Patent Registration No. 10-0138698 and Patent Registration No. 10-0965715.

Hereinafter, the supporting structures disclosed in Patent Registration No. 10-0138698 and Patent Registration No. 10-0965715 as prior arts will be briefly described.

FIG. 1 is a schematic view illustrating a combined power generation facility using fuel cell power generation and thermoelectric power generation of Patent Registration No. 10-0138698 (hereinafter, referred to as 'prior art 1'). As shown in FIG. 1, a conventional power generation system using fuel cell power generation and thermoelectric power generation includes a fuel cell 110 that generates waste heat at a current and a high temperature by an electrochemical reaction between hydrogen or natural gas and oxygen, and A fuel cell power generation facility including a low temperature fuel supply pipe 215 for supplying fuel to the fuel cell 110, and an exhaust gas pipe 220 for transferring high temperature exhaust gas generated from the fuel cell 110; And a first thermoelectric power module 230 having the fuel supply pipe 215 as a low heat absorber and the exhaust gas pipe 220 as a high heat absorber, and exhaust gas having passed through the exhaust gas pipe 220. And a thermoelectric generator including a second thermoelectric generator module 240 having the discharge flue 250 as a high heat source absorbing unit and an atmosphere as a low heat source absorbing unit.

However, in the combined cycle power generation system using thermoelectric power generation according to the prior art 1, the structure is complicated by the fact that each of the absorbers including the fuel supply pipe 215 as the low heat source absorber and the exhaust gas pipe 220 as the high heat source absorber is provided. There was a problem with getting lost.

2 is an assembly diagram of a thermoelectric power generation and heat generating apparatus of Patent Registration No. 10-0965715 (hereinafter referred to as 'prior art 2').

In the thermoelectric power generation and heat generating apparatus of the prior art 2, the thermoelectric power generation and heat generating apparatus includes a fuel tank (1), a blower (2), a fuel / air mixer (3), a burner (4) for combustion of fuel, and combustion. The thermoelectric module 5, which is attached to the inner wall of the boiler to generate electricity by the high temperature combustion heat, the water jacket 6 for cooling the low temperature part of the thermoelectric module, and the energy of the waste combustion gas are recovered secondarily to recover the steam of the waste combustion gas. Condensation recovery condensation heat exchanger (7), hot water or hot air to consume the thermal energy of the ondol or load device (8), hot water circulation pump (9).

However, the thermoelectric power generation and heat generating apparatus according to the prior art 2 attaches a thermoelectric element to the inner wall of the combustion chamber, but the structure is simple. However, the thermoelectric power generation capacity is limited by the limited size of the combustion chamber.

KR 10-0138698 B1 KR 10-0965715 B1

An object of the present invention is to solve the problems of the prior art as described above, by heating the heating side of the thermoelectric power module through a high temperature combustion gas, and cooling the cooling side of the thermoelectric power module through a separate cooling device By increasing the output of electromotive force according to a large temperature difference, it can be used as an independent power source or an emergency power source, and its simple structure makes maintenance cost low and uses an independent power supply device using thermoelectric power generation that can be used as alternative energy. To provide.

In addition, another object of the present invention is to provide an independent power supply using a thermoelectric power to maximize the energy efficiency by recovering and reusing the heat and waste heat in addition to the artificial heat source by the boiler.

According to a feature of the invention for achieving the above object, the present invention, a burner device for burning fuel; A communication connected to the burner device to exhaust combustion gas; A thermoelectric generator module provided on the communication surface with a plurality of heating sides to generate an electromotive force by a temperature difference between the heating side and the cooling side; A cooling device for cooling the cooling side of the thermoelectric power module; And a power conversion device electrically connected to the thermoelectric power generation module to convert output power.

In addition, a plurality of heat transfer parts may be provided on an inner wall of the communication adjacent to the heating side of the thermoelectric power module.

In addition, the heat transfer unit may be provided as any one of a heat pipe, a heat receiver, and a heat sink.

In addition, a power adjusting device for stabilizing the generated current between the thermoelectric power module and the power conversion device may be further provided.

In addition, the communication has a polygonal cross-sectional shape, the thermoelectric power module and the cooling device may be disposed on each surface.

According to the present invention, the heating side of the thermoelectric generator module is heated by the combustion gas of high temperature, and the cooling side of the thermoelectric generator module is cooled by a separate cooling device to increase the output of the electromotive force according to a large temperature difference. It can be used as a power source or an emergency power source, has a low cost of maintenance due to its simple structure, can be used as an alternative energy, and maximizes energy efficiency by recovering and reusing waste and waste heat in addition to artificial heat sources by a boiler. There is.

1 is a configuration diagram schematically showing a complex power generation facility using a fuel cell power generation and thermoelectric power generation according to the prior art 1.
Figure 2 is an assembly diagram of a thermoelectric power generation and heat generating apparatus according to the prior art 2.
3 is a schematic configuration diagram of an independent power supply using thermoelectric power generation according to the present invention.
Figure 4 is a longitudinal cross-sectional view showing a state in which the thermoelectric power module and the cooling device is provided in the square communication in the independent power supply using the thermoelectric power generation according to the present invention.
FIG. 5 is an enlarged view of “A” of FIG. 3.
6 is a longitudinal sectional view showing a state in which a thermoelectric power module and a cooling device are provided in a circular communication in the independent power supply using the thermoelectric power generation according to the present invention.

The terms or words used in the present specification and claims are intended to mean that the inventive concept of the present invention is in accordance with the technical idea of the present invention based on the principle that the inventor can appropriately define the concept of the term in order to explain its invention in the best way Should be interpreted as a concept.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise. Also, the term " part "in the specification means a unit for processing at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software.

Hereinafter, a configuration of an embodiment of an independent power supply using thermoelectric power generation according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a schematic configuration of the independent power supply using the thermoelectric power generation according to the present invention is shown in schematic diagram, Figure 4 is a thermoelectric power module and cooling in the rectangular communication in the independent power supply using the thermoelectric power generation according to the present invention. A state in which the device is provided is shown in longitudinal section, and in FIG. 5, "A" in FIG. 3 is shown in an enlarged view.

According to these drawings, the independent power supply device 100 using the thermoelectric power generation according to the present embodiment is the burner device 110, the communication 120, the thermoelectric power module 130, the cooling device 140, the power control device ( 150, the power conversion device 160 and the charge / discharge device 170, and can be modularized by function or capacity.

The burner device 110 functions to burn the heat source gas by combustion heat, and includes a combustion chamber 112a, a burner chamber 112b, a burner 114, an ignition device 116, and a temperature sensor 118.

The combustion chamber 112a is a space where a gas combusted with fuel is generated and includes a burner 114, an ignition device 116, and a temperature sensor 118. The burner chamber 112b is connected to the combustion chamber 112a and is provided with a fuel supply pipe to supply fuel to the burner 114.

The burner 114 is a mechanism for burning the fuel supplied through the fuel supply pipe in the combustion chamber 112a, and the combustion fuel is generated while the supply fuel is ignited by the ignition device 116.

The temperature sensor 118 senses an internal temperature of the combustion chamber 112a and outputs a signal to a controller (not shown) when the internal temperature rises above a predetermined temperature to supply fuel or operate the burner 114. Control whether or not.

On the other hand, the industrial arrangement and waste heat can be recovered and reused as an energy source other than the heat source by the burner device 110, and in addition, automobile exhaust gas, incineration heat, pipe piping heat, geothermal heat, hot water, heating, cooking heat, etc. Can be.

The communication 120 is connected to the wall surface of the combustion chamber 112a and is a passage through which the combustion gas generated by the burner device 110 flows and is exhausted. In this case, the communication 120 may be formed in a zigzag shape, the cross-sectional shape may be formed in a polygon, and the present invention is not limited thereto and may be changed to another shape. In another embodiment, both ends of the communication 120 may be connected to both ends of the combustion chamber 112a so that combustion gas is circulated through the communication 120.

On the other hand, when the cross-sectional shape of the communication 120 is formed in a polygon, the thermoelectric power module 130 and the cooling device 140 is disposed for each surface. That is, when the cross section of the communication 120 is formed in a quadrangular shape as in this embodiment, a plurality of thermoelectric power module 130 is installed on each surface, the plurality of thermoelectric power module 130 is one It is covered while being in close contact with the cooling device (140).

In addition, the inner wall surface of the communication 120 is provided with a heat transfer unit to increase the heat transfer rate in the thermoelectric power module 130, the heat transfer unit (Heat pipe), heat receiver (heat receiver) that can further improve the heat absorption area (heat receiver) ), A heat sink and a radiator form may be optionally provided.

In this case, the heat transfer unit will be described as an example of the heat receiver. That is, the heat receiver 122, which is a kind of heat transfer part, is provided along the inner wall surface of the communication 120 to improve the endothermic contact area. Thus, since the heat receiver 122 is provided along the inner wall surface of the communication 120, it is possible to homogenize the temperature distribution in the thermoelectric power module 130.

When the heat transfer part is a heat pipe, the heat absorbing part is positioned inside the communication 120, and the heat generating part is positioned to contact the inner wall surface of the communication 120 to heat the combustion gas flowing in the communication 120. After absorbing the heat from the heat absorbing portion is delivered to the heat generating portion.

Here, although not shown in the drawing, when the inside of the metal tube is vacuumed and a working fluid such as distilled water or a liquid is inserted, and hot water or electricity is contacted at one end, the working fluid turns into a vapor state inside the metal tube to generate heat. It transfers heat to the entire metal tube while moving in the other direction. In other words, it refers to a heat transfer object that instantaneously transfers a large amount of heat using vaporization, in which a liquid is repeatedly turned into a gas, and high latent heat absorbed and released in the process of condensing a gas into a liquid.

Although not shown in the drawings, the heat transfer part has a radiator shape, and is formed in a structure in which a plurality of cores are connected between a pair of core plates.

Alternatively, the pair of core plates may be connected to each other by a heat pipe instead of a core, and in this case, the heat generating unit of the heat pipe may be provided to be in contact with the inner wall surface of the communication 120.

In addition, although not shown in the drawings, the heat transfer part may be used in a state in which a plate made of a material (copper, etc.) capable of heat transfer may be manufactured in a grid-like structure, and then the end portion of the grid-shaped structure is in contact with the inner wall surface of the communication 120.

The thermoelectric generator module 130 is composed of a heating side (H) provided to contact the surface of the communication 120 and the cooling side (C) to contact the cooling device 140 to be described later, using the principle of Seebeck By means of heat difference between the metal end face of the heating side (H) and cooling side (C) refers to the module to generate power by using the phenomenon that the current is generated due to the difference in electromotive force.

Here, the thermoelectric generator module 130 is installed between the upper electrode 131a, the lower electrode 131b to which the anode and the cathode are connected, and the upper and lower electrodes 132a and 132b. And a plurality of P-type thermoconductors 134a and N-type thermoconductors 134b connected in series in a π-type so as to be energized by 132a and 132b. In addition, an insulating layer 134 is formed on the upper and lower electrodes, respectively. At this time, the thermoelectric generator module 130 preferably increases the temperature difference between the heating side H and the cooling side C in order to maximize the amount of current generated.

The cooling device 140 functions to cool the cooling side C of the thermoelectric power module 130 by a water cooling method, etc. in order to maximize the amount of current generated by the thermoelectric power module 130, and a water jacket (Water) jacket: 142 and cold water supply 144. Thus, the cooling device 140 can be controlled according to the rapid temperature change while maintaining the appropriate temperature of the thermoelectric power module 130. As a result, the cooling apparatus 140 may precisely control the temperature difference between the heating side H and the cooling side C in the thermoelectric generator module 130.

The water jacket 142 is formed in a block shape corresponding to the length of the straight portion in the zigzag communication 120 is disposed on the upper, lower, left, and right sides of the communication 120, the inlet 142a for cold water flows in and out of one side wall ) And an outlet 142b. Here, the water jacket 142 may be connected in series or in parallel with the cold water supply unit 144.

Cold water supply unit 144 is connected to the inlet and outlet of the water jacket 142 to supply the cooling water of the set temperature to the water jacket 142, and pumped cold water lowered below the set temperature after use (not shown in the drawing) Recovery through the back.

The power adjusting device 150 converts the DC voltage by converting the direct current into an alternating current and then stepping up or down by rectifying the transformer (not shown) to stabilize the generated current generated by the thermoelectric generator module 130. DC / DC converter.

The power converter 160 is a DC / AC INVERTER that enables the electric power adjusted by the power regulator 150 to be immediately used (demanded) by DC and AC power according to a consumer's need.

The charging / discharging device 170 is electrically connected between the power adjusting device 150 and the power conversion device 160 to prevent a phenomenon in which the power load frequently fluctuates rapidly during thermoelectric generation and the increase in discharge density. Therefore, by reducing the density of charge and discharge of the capacitor (not shown in the figure) to improve the durability of the battery for a long time, and by automatically replenishing the water of the battery to the optimum level, it saves time and improves durability. At this time, it is preferable that the capacitor is electrically connected to the charging / discharging device 170.

Therefore, the operation sequence of the independent power supply using the thermoelectric power generation according to the present invention will be described.

First, when fuel is supplied to the burner 114 located in the combustion chamber 112a, the combustion gas is generated as the combustion is started after being ignited by the ignition device 116.

Next, the high temperature combustion gas is exhausted through the communication 120 connected to the wall surface of the combustion chamber 112a. At this time, the heating side (H) of the plurality of thermoelectric power module 130 is in contact with each of the upper, lower, left, and right walls of the communication 120 through which the high-temperature combustion gas is exhausted, the cooling side (C) of the thermoelectric power module 130 The water jacket 142 of the cooling device 140 is in contact.

Next, high temperature heat is transmitted to the heating side H of the thermoelectric power module 130 in contact with the surface of the communication 120 through which the high temperature combustion gas is exhausted, and to the water jacket 142 of the cooling device 140. Since low temperature cold air is transmitted through cold water circulated to the cooling side C of the thermoelectric power module 130 in contact with the thermoelectric generator module 130, the thermoelectric power may be changed due to a difference in electromotive force according to a large temperature difference between the heating side H and the cooling side C. Current is generated in the power generation module 130.

Next, the electric current generated by the thermoelectric generator module 130 stabilizes the electric current generated by the thermoelectric generator module 130 through the power adjusting device 150, and the power adjusting device through the power converter 160. The power adjusted in 150) is immediately available as direct current and alternating current power according to the needs of consumers.

Here, since the charge / discharge device 170 is provided between the power control device 150 and the power converter 160, the power load frequently changes rapidly during thermoelectric generation while storing electricity in the capacitor, and the discharge density. This will prevent the phenomenon of getting bigger.

On the other hand, the independent power supply using the thermoelectric power generation according to the present invention is also applicable to the case in which the communication (120 ') is circular, as shown in Figure 6, in this case the water jacket 142' of the cooling device is also semicircle ( 1/2 circle) or 1/4 circle or 1/4 circle or more, and combine them to maintain a circular shape.

In this case, the water jacket 142 ′ of the cooling apparatus includes an inlet 142 a ′ and an outlet 142 b ′ through which cold water is introduced and discharged. In addition, the inner circumferential surface of the circular cylinder 120 'is provided with a plurality of radial heat receivers 122', which is an example of a heat transfer unit, to improve the endothermic contact area.

Particularly, when the communication 120 'is circular, the upper and lower surfaces of the thermoelectric power module 130' are formed to have corresponding curved surfaces so that the contact area between the communication 120 'and the water jacket 142' is increased. It is preferable. Here, the water jacket 142 ′ may be connected in series with or in parallel with the cold water supply unit.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.

Therefore, the scope of the present invention should not be limited by the described embodiments, but should be determined by the equivalents of the appended claims, as well as the appended claims.

100: independent power supply using the thermoelectric power generation of the present invention
110: burner device 120: communication
130: thermoelectric generation module 140: cooling device
150: power regulator 160: power converter
170: charge / discharge device

Claims (5)

A burner device for burning fuel;
A communication in which a combustion gas is exhausted by being connected in a zigzag form to the burner device;
A thermoelectric generator module provided on the communication surface with a plurality of heating sides to generate an electromotive force by a temperature difference between the heating side and the cooling side;
A cooling device including a water jacket formed in a block shape corresponding to the length of the straight portion in the zigzag communication so as to cool the cooling side of the thermoelectric power module;
A power conversion device electrically connected to the thermoelectric generation module to convert output power;
A power adjusting device for stabilizing a generated current between the thermoelectric generator module and the power converter; And
And a charge / discharge device electrically connected between the power control device and the power converter, and automatically replenishing water in the capacitor while accumulating electricity in the capacitor.
The method of claim 1,
Independent power supply using a thermoelectric power generation is provided with a plurality of heat transfer on the inner wall of the communication in close proximity to the heating side of the thermoelectric power module.
3. The method of claim 2,
The heat transfer unit is an independent power supply using a thermoelectric power generation any one of a heat pipe, a heat receiver and a heat sink.
delete The method of claim 1,
The communication is formed of a polygonal cross-sectional shape, the independent power supply using a thermoelectric power generating the thermoelectric power module and the cooling device for each surface.

Images