CN107154752B - Blast structure of thermoelectric generator and thermoelectric generator - Google Patents

Abstract

The application discloses a blowing structure of a thermoelectric generator and a thermoelectric generator, wherein the blowing structure includes: a combustion chamber, the outer wall of the combustion chamber has a heat-insulating cavity, and the side wall of the combustion chamber has an air vent communicating with the heat-insulating cavity ; The air supply pipeline, one end of the air supply pipeline communicates with the heat insulation cavity, and the other end is equipped with a blower. This application can insulate the area by setting the heat insulation cavity outside the combustion chamber to prevent the side wall of the high temperature combustion chamber from affecting the work of other components of the thermoelectric generator; It can deliver cold air into the heat insulation chamber and enter the combustion chamber through the vent. The cold air can exchange heat with the heat insulation chamber, so as to realize the preheating of the air input into the combustion chamber, and effectively realize the heat reuse. .

Description

Blowing structure of thermoelectric generator and thermoelectric generator

technical field

The invention relates to power generation equipment, in particular to a blower structure of a thermoelectric generator and the thermoelectric generator.

Background technique

With the development of science and technology, various illuminators and portable electronic products are becoming more and more abundant, and people are more and more dependent on them. However, these illuminators and Power supplies for electronic products often render them unusable because they cannot be replenished with electrical energy.

The Seebeck effect refers to the thermoelectric phenomenon in which the voltage difference between two substances is caused by the temperature difference between two different electrical conductors or semiconductors. The thermoelectric power generation sheet uses the Seebeck effect to convert heat energy into electrical energy. In order to generate electric energy in the field and other places, a biomass fuel thermoelectric generator can be designed by using this characteristic of the thermoelectric power generation sheet.

In the prior art, in order to fully burn the fuel, the thermoelectric generator will be equipped with a blower structure to blow the fuel. The traditional blower structure can only blow cold air directly into the combustion chamber, and cannot preheat the blown wind.

Contents of the invention

The present invention aims at the above problems, overcomes the shortcomings, and proposes a blower structure of a thermoelectric generator and a thermoelectric generator.

The technical scheme that the present invention takes is as follows:

A blowing structure of a thermoelectric generator, comprising:

A combustion chamber, the outer wall of the combustion chamber has a heat insulation cavity, and the side wall of the combustion chamber has a vent communicating with the heat insulation cavity;

The air supply pipeline, one end of the air supply pipeline communicates with the heat insulation cavity, and the other end is equipped with a blower, and the blower is connected to an external power supply, or connected to the control circuit of the thermoelectric generator, and is powered by the thermoelectric generator.

By setting the heat insulation cavity outside the combustion chamber, the area can be insulated to prevent the high temperature side wall of the combustion chamber from affecting the work of other components of the thermoelectric generator; the air supply pipeline is connected with the heat insulation cavity, and the blower can flow The cold air is conveyed in the heat-insulating cavity and input into the combustion chamber through the air vent. The cold air can exchange heat with the heat-insulating cavity, so as to realize the preheating of the air input into the combustion chamber, and effectively realize the reuse of heat.

The blower is powered by the thermoelectric generator, so that the blower structure of the present application can also perform the blowing operation when there is no special power supply for blowing in outdoors and other places.

Optionally, there are multiple vents, and each vent is divided into two vent areas, one of which is located at the lower part of the heat insulation chamber, and the other vent area is located at the upper part of the heat insulation chamber.

Setting two ventilation areas can realize staged combustion and improve fuel combustion efficiency.

Optionally, the inner diameter of the air vent located at the lower part is smaller than the inner diameter of the air vent located at the upper part.

Optionally, a baffle fixed on the outside of the combustion chamber is also included, the heat insulation cavity is composed of the baffle and the combustion chamber, and the lower end opening of the heat insulation cavity communicates with the air supply pipeline.

The present application also discloses a thermoelectric generator, comprising the blowing structure described above; the side wall of the combustion chamber has a notch, and the upper end of the notch extends to the upper end surface of the combustion chamber;

Thermoelectric generators also include:

A vertically arranged heat conduction plate, the heat conduction plate is inserted on the notch, the heat conduction plate includes a heat absorbing part located in the combustion chamber, and a power generation part passing through the recess and located outside the combustion chamber, the heat absorbing part is in contact with the combustion chamber The inner wall of the chamber is close or clearance fit;

Thermoelectric power generation piece, one side of the thermoelectric power generation piece fits closely with the corresponding power generation part;

The heat dissipation device is arranged on the side of the thermoelectric power generation sheet facing away from the power generation part, and the heat dissipation device cooperates with the thermoelectric power generation sheet for heat dissipation;

The heat insulation chamber is arranged between the side wall of the combustion chamber and the heat dissipation device.

The heat insulation cavity is arranged between the side wall of the combustion chamber and the heat dissipation device, which can prevent the high temperature side wall of the combustion chamber from affecting the work of the thermoelectric power generation sheet and the heat dissipation device.

Optionally, the heat absorbing portion of the heat conducting plate has a through hole or a notch matched with a corresponding air vent.

The heat conduction plate is provided with through holes or gaps corresponding to the air vents, so that the air in the heat insulation cavity can enter the combustion chamber conveniently.

Optionally, the heat conduction plate has at least one set, and each set of heat conduction plates is matched with the corresponding notch, and each set of heat conduction plates includes two heat conduction plates, and the heat absorbing parts of the two heat conduction plates are respectively located on both sides of the notch The heat insulation chamber has at least one group, and each group of heat insulation chambers includes two heat insulation chambers, and the two heat insulation chambers are respectively arranged on both sides of the corresponding notch.

Optionally, the thermoelectric generator further includes a controller connected to the thermoelectric generator.

The beneficial effects of the present invention are: by arranging the heat insulation cavity outside the combustion chamber, the area can be insulated to prevent the side wall of the high temperature combustion chamber from affecting the work of other components of the thermoelectric generator; the air supply pipeline and the heat insulation cavity Connected, when the blower is working, it can deliver cold air into the heat insulation chamber, and enter the combustion chamber through the vent. The cold air can exchange heat with the heat insulation chamber, thereby realizing preheating of the air input into the combustion chamber, effectively realizing thermal reuse.

Description of drawings:

Fig. 1 is the structural representation of embodiment 1 thermal conduction structure;

Fig. 2 is the top view of embodiment 1 heat conduction structure;

Fig. 3 is the structural representation of embodiment 1 thermoelectric generator;

Fig. 4 is the structural representation of embodiment 2 thermal conduction structure;

Fig. 5 is the structural representation of embodiment 2 thermoelectric generator;

Fig. 6 is the schematic diagram of embodiment 3 blast structure;

Fig. 7 is a schematic diagram of another angle of the blowing structure of Embodiment 3;

Fig. 8 is a schematic structural view of a thermoelectric generator and a warm air delivery pipe in Embodiment 3;

Fig. 9 is the structural representation of embodiment 3 thermoelectric generator;

Fig. 10 is the top view of embodiment 3 thermoelectric generator;

Fig. 11 is A-A sectional view of Fig. 10;

Fig. 12 is the schematic diagram of embodiment 4 blowing structure;

Fig. 13 is a schematic diagram of another angle of the blowing structure in embodiment 4;

Fig. 14 is a schematic structural view of the thermoelectric generator in embodiment 4 after installing the warm air delivery pipe;

Fig. 15 is the structural representation of embodiment 4 thermoelectric generator;

Fig. 16 is the top view of embodiment 4 thermoelectric generator;

Fig. 17 is a B-B sectional view of Fig. 16 .

Each reference mark in the figure is:

1. Combustion chamber; 2. Heat conduction plate; 3. Notch; 4. Fixing bar; 5. Power generation part; 6. Heat absorption part; 7. Fire grate; plate; 11, cooling chamber; 12, fins; 13, cooling fan; 14, clapboard; 15, air supply pipeline; 16, blower; 17, air vent; 18, through hole; Connecting port; 21, warm air conveying pipe; 22, heat insulation cavity.

Detailed ways:

Below in conjunction with each accompanying drawing, the present invention is described in detail.

Example 1

As shown in Fig. 3, a thermoelectric generator includes a heat conducting structure. As shown in Figures 1, 2 and 3, the thermally conductive structure includes:

A combustion chamber 1, the side wall of the combustion chamber 1 has a notch 3, and the upper end of the notch 3 extends to the upper end surface of the combustion chamber 1;

The heat conduction plate 2 arranged vertically, the heat conduction plate 2 is inserted on the notch 3, the heat conduction plate 2 includes a heat absorbing part 6 located in the combustion chamber 1, and a power generation part 5 located outside the combustion chamber 1 through the notch 3, The heat absorbing portion 6 is in close contact with or clearance fit with the inner wall of the combustion chamber 1 .

The heat conduction plate 2 is arranged vertically and the heat absorbing part 6 is in close contact with or clearance fit with the inner wall of the combustion chamber 1. This arrangement can conduct reliable heat transfer without affecting the combustion of fuel. The heat conduction plate 2 is inserted in the notch 3 This structural form facilitates the installation and disassembly of the heat conducting plate 2 .

In this embodiment, there is at least one set of heat conduction plates 2, and each set of heat conduction plates 2 is matched with the corresponding notch 3; each set of heat conduction plates 2 includes two heat conduction plates 2, and the heat absorbing parts of the two heat conduction plates 2 6 are located on both sides of the notch 3 respectively. Two heat conducting plates 2 are installed on a notch 3 at the same time, and the heat absorbing parts 6 are respectively located on both sides of the notch 3. This structure can reliably utilize the heat energy in the combustion chamber 1 (both sides of the notch 3), and The structure is also simple, and the installation and disassembly of the two heat-conducting plates 2 is relatively convenient. This form of the heat-conducting structure can make the thermoelectric generator relatively large.

In this embodiment, the two power generating parts 5 of each group of heat conducting plates 2 are arranged in parallel, and the two power generating parts 5 abut against each other or have clearance fit.

In this embodiment, the outer wall of the combustion chamber 1 has fixing strips 4 located on both sides of the notch 3 , and the heat conducting plate 2 cooperates with the corresponding fixing strips 4 through fasteners. The heat conduction plate 2 can be fixed by setting the fixing bar 4 to prevent the heat conduction plate 2 from moving up and down.

In this embodiment, the lower end of the combustion chamber 1 has a fire grate 7 , the lower end of the notch 3 extends to the fire grate 7 , and the lower end of the heat absorbing portion 6 abuts against the fire grate 7 . The lower end of the heat-absorbing part 6 abuts against the fire grate 7, which can ensure the stress of the heat-conducting plate 2, and the heat-conducting plate 2 is installed and fixed reliably.

In this embodiment, the combustion chamber 1 includes a rectangular inner wall, the heat conduction plate 2 is Z-shaped, the power generation part 5 of the heat conduction plate 2 is a straight structure, and the heat absorption part 6 of the heat conduction plate 2 is L-shaped.

As shown in Figure 3, in this embodiment, the thermoelectric generator also includes:

The thermoelectric power generation sheet 9, one side of the thermoelectric power generation sheet 9 fits closely with the corresponding power generation part 5;

The heat sink 8 is arranged on the side of the thermoelectric power generation sheet 9 facing away from the power generation part 5, and the heat sink 8 cooperates with the thermoelectric power generation sheet 9 for heat dissipation;

A controller is connected with the thermoelectric generation sheet 9 .

In this embodiment, the cooling device 8 includes:

The heat dissipation plate 10 is attached to the power generation part 5 of the thermoelectric power generation sheet 9, and the heat dissipation plate 10 has a heat dissipation cavity 11, and the heat dissipation cavity 11 has an air inlet and an air outlet;

A plurality of fins 12 arranged at intervals, the fins 12 are arranged in the heat dissipation chamber 11, and are fixed to the side wall of the heat dissipation chamber 11 adjacent to the thermoelectric generation sheet 9;

The heat dissipation fan 13 is used for blowing air into the heat dissipation chamber 11 .

Example 2

As shown in Figures 4 and 5, the difference between this embodiment and Embodiment 1 is that the combustion chamber 1 includes a circular inner wall, the power generation part 5 of the heat conduction plate 2 is a straight structure, and the heat absorption part 6 of the heat conduction plate 2 is in line with The arc structure that the inner side wall of the combustion chamber 1 is suitable for.

Example 3

As shown in Figures 8, 9, 10 and 11, a thermoelectric generator includes an air blowing structure and a heat dissipation structure. As shown in Figures 6 and 7, the blower structure includes:

Combustion chamber 1, the outer wall of the combustion chamber 1 has a heat insulation cavity 22, and the side wall of the combustion chamber 1 has a vent 17 communicating with the heat insulation cavity 22;

The air supply pipeline 15, one end of the air supply pipeline 15 communicates with the heat insulation cavity 22, and the other end is equipped with a blower 16, the blower is connected to an external power supply, or connected to the control circuit of the thermoelectric generator, powered by the thermoelectric generator.

By arranging the heat insulation cavity 22 on the outside of the combustion chamber 1, the area can be insulated to prevent the side wall of the high temperature combustion chamber 1 from affecting the work of other components of the thermoelectric generator; the air supply pipeline 15 communicates with the heat insulation cavity 22, When the blower 16 is working, it can deliver cold air to the heat-insulating chamber 22 and enter it into the combustion chamber 1 through the air vent 17. Heat, effectively realizing the heat reuse. The blower is powered by the thermoelectric generator, so that the blower structure of the present application can also perform the blowing operation when there is no special power supply for blowing in outdoors and other places.

In this embodiment, there are multiple vents 17 , and each vent 17 is divided into two vent areas, one of which is located at the lower part of the heat insulation chamber 22 , and the other is located at the upper part of the heat insulation chamber 22 . Setting two ventilation areas can realize staged combustion and improve fuel combustion efficiency.

In this embodiment, the inner diameter of the lower vent 17 is smaller than the inner diameter of the upper vent 17 .

In this embodiment, it also includes a partition plate 14 fixed on the outside of the combustion chamber. The heat insulation cavity is formed by the partition plate 14 and the combustion chamber.

As shown in FIG. 8 , in this embodiment, the thermoelectric generator includes the heat conduction structure of Embodiment 1, the thermoelectric power generation sheet 9 and the controller, and the heat dissipation structure of this embodiment includes the heat dissipation device 8 of Embodiment 1.

As shown in FIG. 11 , the heat insulation cavity 22 of this embodiment is arranged between the outer wall of the combustion chamber 1 and the heat sink 8 . The heat insulation chamber 22 is arranged between the outer wall of the combustion chamber 1 and the heat sink 8 to prevent the high temperature side wall of the combustion chamber 1 from affecting the operation of the thermoelectric power generation sheet 9 and the heat sink 8 .

As shown in FIGS. 9 and 11 , in this embodiment, the heat absorbing portion 6 of the heat conducting plate 2 has a through hole 18 matched with the corresponding vent 17 (it may also be provided as a notch in other embodiments). The heat conduction plate 2 is provided with a through hole 18 or a gap corresponding to the vent 17, so that the air in the heat insulation cavity 22 can enter the combustion chamber 1 conveniently.

In this embodiment, in addition to the heat dissipation device 8 of Embodiment 1, the heat dissipation structure also includes a buffer box 19. The buffer box 19 is arranged at the air outlet for receiving hot air discharged from the air outlet. The buffer box 19 has a connection port 20 , the connection port 20 is used for detachable connection with the warm air delivery pipe 21 . When the cooling device 8 works, the cooling fan 13 works and blows air into the cooling cavity 11, the air exchanges heat with the fins 12, the temperature of the cooling plate 10 decreases, the temperature of the air rises, and the heated air enters the buffer box 19 through the air outlet and is connected to Port 20 discharges, and when needing to utilize the hot air of buffer box 19, warm air conveying pipe 21 can be connected with connecting port 20, and now warm air conveying pipe 21 can convey hot new wind in yurt, tent. .

As shown in FIGS. 9 and 11 , in this embodiment, the buffer box 19 cooperates with the two cooling devices 8 on both sides of the corresponding notch 3 to receive hot air from the two cooling chambers 11 at the same time. This structure can collect the hot air from the two cooling devices 8 at the same time.

In this embodiment, the air outlet is located on the top of the cooling plate 10 .

Example 4

As shown in Figures 12 to 17, the difference between this embodiment and Embodiment 3 is that the combustion chamber 1 of this embodiment includes a circular inner side wall, the power generation part 5 of the heat conduction plate 2 is a straight structure, and the suction of the heat conduction plate 2 The hot part 6 is an arc-shaped structure adapted to the inner wall of the combustion chamber 1 . The heat conduction structure of this embodiment is the heat conduction structure of Embodiment 2.

The above is only a preferred embodiment of the present invention, and does not limit the scope of patent protection of the present invention. Any equivalent structural transformation made by using the description of the present invention and the contents of the accompanying drawings is directly or indirectly used in other related technical fields. All are equally included in the scope of protection of the present invention.

Claims (2)

1. A blowing structure of a thermoelectric generator, characterized in that, comprising: A combustion chamber, the outer wall of the combustion chamber has a heat insulation cavity, and the side wall of the combustion chamber has a vent communicating with the heat insulation cavity; An air supply pipeline, one end of the air supply pipeline communicates with the heat insulation cavity, and the other end is equipped with a blower, and the blower is connected to an external power supply, or connected to the control circuit of the thermoelectric generator, and powered by the thermoelectric generator; There are multiple vents, and each vent is divided into two vent areas, one of which is located at the lower part of the heat insulation chamber, and the other vent area is located at the upper part of the heat insulation chamber; The inner diameter of the air vent located at the lower part is smaller than the inner diameter of the air vent located at the upper part; It also includes a baffle fixed on the outside of the combustion chamber, the heat insulation cavity is composed of the baffle and the combustion chamber, and the opening at the lower end of the heat insulation cavity communicates with the air supply pipeline; The side wall of the combustion chamber has a notch, and the upper end of the notch extends to the upper end surface of the combustion chamber; Thermoelectric generators also include: A vertically arranged heat conduction plate, the heat conduction plate is inserted on the notch, the heat conduction plate includes a heat absorbing part located in the combustion chamber, and a power generation part passing through the recess and located outside the combustion chamber, the heat absorbing part is in contact with the combustion chamber The inner wall of the chamber is close or clearance fit; Thermoelectric power generation piece, one side of the thermoelectric power generation piece fits closely with the corresponding power generation part; The heat dissipation device is arranged on the side of the thermoelectric power generation sheet facing away from the power generation part, and the heat dissipation device cooperates with the thermoelectric power generation sheet for heat dissipation; The heat insulation cavity is arranged between the side wall of the combustion chamber and the heat dissipation device; The heat absorbing part of the heat conducting plate has a through hole or notch matched with the corresponding air vent; The heat conducting plate has at least one group, and each group of heat conducting plates cooperates with the corresponding notch respectively, and each group of heat conducting plates includes two heat conducting plates, and the heat absorbing parts of the two heat conducting plates are respectively located on both sides of the notch; There is at least one group of thermal chambers, and each group of thermal insulation chambers includes two thermal insulation chambers, and the two thermal insulation chambers are respectively arranged on both sides of the corresponding notch. 2. The thermoelectric generator according to claim 1, characterized in that, the thermoelectric generator further comprises a controller connected to the thermoelectric generator.