JPS59216480A - Thermoelectric generator with compressed air - Google Patents

Abstract

PURPOSE:To enable to generate a thermoelectricity by separating compressed air into high temperature air and low temperature air via a whirl tube and introducing the airs to both side surfaces of a thermoelectric generating element, thereby increasing the temperature difference without using a heat absorber and a heat radiator. CONSTITUTION:When compresseed air is injected from an inlet 19 into a whirl tube 14, a vortex occurs in a vortex tube 15. Low temperature air is collected from a low temperature air intake port 21 through a low temperature air passage 27 into a cooling vessel 7, and high temperature air is collected from a high temperature air intake port 25 through a high temperature air passage 28 into a heating vessel 9. A thermoelectric generating element 1 is respectively cooled and heated by the low and high temperature airs, a temperature difference is formed at both side end surfaces of the element 1, thereby generating at the element 1.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thermoelectric power generation device that generates electricity using the heat of compressed air.

Thermal lightning power generation using the Gebeck effect has been known for some time, and one example is a thermal lightning power generation device disclosed in Japanese Patent Application Laid-open No. 72020/1983.

This power generation device utilizes exhaust heat from an engine, etc., and will be explained below based on FIG. 1.

The power generation device 31 has an exhaust stack 32 such as an engine or a combustion furnace, and a thermoelectric power generating element 35 having cooling fins 34 fixed to the outer circumferential surface is fixed to the outer peripheral surface of the exhaust pipe 32 near the discharge port 33. A heat absorbing fin 36 is fixed to the inner peripheral surface. Exhaust pipe 32
An outer cylinder 38 is provided on the outer periphery of the exhaust pipe 32, coaxially extending through a space 37 to a downstream region from the discharge port 33 of the exhaust pipe 32.

The burned high-temperature gas discharged from the engine etc. is stored in the exhaust pipe 3.
The heat-absorbing fins 36 efficiently heat the inner surface of the thermal lightning power generating element. On the other hand, this gas is
When it exits, it enters the outer cylinder 38, where outside air is drawn into the space 37 between the outer cylinder 38 and the exhaust pipe 32 by the venturi effect, and the cooling fins 34 efficiently cover the outer surface of the thermoelectric generating element 35. Cooling. Therefore, one side of the thermal lightning power generating element 35 is heated by the high temperature gas and the other side is cooled by the outside air, so a temperature difference occurs in the element 35 and power is generated.

However, in thermal lightning power generation, it is necessary to maximize the temperature difference between the high temperature side and the low temperature side in order to increase the efficiency of the thermal lightning power generation element.

In the device disclosed above, the maximum temperature difference is the temperature of the hot gas minus the humidity of the outside air, and in order to increase the temperature difference, a cooling means such as a fluid having a lower temperature than the outside air is required.

The technical problem of the present invention is to obtain a thermoelectric power generation device that uses room temperature gas as a heating and cooling means and can increase the temperature difference with a type of fluid.

The solution of the present invention is as follows.

A thermal lightning power generating element, a vortex tube that separates compressed air into high temperature air and low temperature air, means for guiding the high temperature air of the vortex to one side of the thermal lightning generating element, and a means for guiding the low temperature air of the vortex tube to the other side. It consists of a means for guiding.

In a vortex tube, when compressed air is injected tangentially to the inner wall of the tube, the air forms a vortex and swirls inside the tube, causing high-energy hot air molecules to gather around the tube, and low-energy cold air molecules to the center of the tube. Since the air gathers and separates into two layers, room temperature air can be transformed into cold and hot air, which can be separated and collected.

The high-temperature air separated by this vortex tube heats one side of the thermal lightning power generation element, and the low-temperature air cools the other side. By using room-temperature compressed air as a heating and cooling means, it is possible to generate heat with a large temperature difference. Can carry one lightning generator.

An embodiment of the thermoelectric power generation device not shown in FIG. 2.3 will be described. The thermoelectric power generating element 1 consists of a plurality of P-type and N-type semiconductors 2.2- as the minimum unit, electrically connected by a low-temperature bonding plate 3 and a high-temperature bonding plate 4, and electrically insulated by a bonding plate 3.4. Board 5
．． 5' is taken (=J beast.A cooling container 7 forming a cooling chamber 6 is fixed to the insulating plate 5 of this thermoelectric generation element 1, and a heating container 9 forming a heating chamber 8 to the insulating plate 5- is fixed. The cooling vessel 7 has an inlet 10 and an outlet 11, and the heating vessel 9 has an inlet 12 and an outlet 13.The vortex tube 14 has an inlet 10 and an outlet 11.
Low temperature air extraction member 1 is connected to one end of 5 via a partition wall plate member 16.
7 is removed, and a high temperature air extraction member 18 is provided at the other end. The low temperature air extraction member 17 has a compressed air inlet 19, and the inlet 19 is connected to the low temperature air extraction member 17.
It opens into an annular space 20 formed between the inner peripheral wall and the outer peripheral wall of the partition plate member 16. The partition plate member 16 has a low humidity air outlet 21 for medium heat, and a connection port 2 of the low temperature air outlet member 17.
2 and the inside of the vortex tube 15 are communicated with each other. The partition wall plate U16 has a plurality of grooves 23 on the end surface that comes into contact with the vortex tube 15, and the grooves 23 extend from the annular space 20 to the tangential direction of the inner wall of the vortex tube 15.
Form and cover the injection passage. A passage 24 is formed between the high temperature air extraction member 18 and the vortex tube 15, and communicates between the connection port 26 and the inside of the vortex tube 15 through the high temperature air extraction port 25. Vortex tube 1
The connection 122 of 4 is communicated through the cold air passage 27 into the cooling chamber 6 of the cooling vessel 7, and the connection 126 is communicated through the hot air passage 28 into the heating chamber 8 of the heating vessel 9.

When compressed air is introduced and injected into the vortex tube 14, a vortex is generated in the vortex tube 15. The low-temperature air passes through the low-temperature air passage 27 from the low-temperature air outlet 21 to the cold N3 container 7.
The hot air is collected in the heating container 9 from the hot air outlet 25 through the hot air passage 28. The thermal lightning power generating element is cooled and heated by the low temperature air and high temperature air, creating a temperature difference between both end faces of the element 1, and generating electricity.

The present invention provides the following unique effects. Compressed air has been used as a power source in factories for a long time, and compressed air at room temperature is divided into high-temperature air and low-temperature air using a vortex tube.
By using rJ-, you can easily generate electricity in any place where compressed air is used. Compressed air at room temperature is separated into high-temperature air and low-temperature air using a vortex tube, so unlike conventional power generation due to the humidity difference between high-temperature gas and outside air, heat absorbers and radiators are used to increase the temperature difference. A large temperature difference can be obtained without using.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a conventional thermal lightning power generation device.
The figure is a sectional view showing one embodiment of the thermal lightning power generation device of the present invention, and FIG. 3 is a sectional view taken along the line Δ-A in FIG. 2. DESCRIPTION OF SYMBOLS 1... Thermal lightning power generation element, 6... Cooling chamber, 8... Heating chamber, 14... Eddy current tube, 19... Injection port, 21
...Low temperature air outlet, 25...High temperature air outlet,
27...Low temperature air passage, 28 High temperature air passage Patent applicant

Claims (1)

[Claims] A thermoelectric power generation element, a vortex tube that separates compressed air into high temperature air and low humidity air, means for guiding the high temperature air of the vortex tube to one side of the thermoelectric power generation element, and guiding low temperature air of the vortex tube to the other side. A compressed air thermal lightning generator comprising means.