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INVENTION
Patent of the Russian Federation RU2234160
METHOD OF WORK OF THERMOELECTRIC GENERATOR
The name of the inventor: Zhukhovitsky DL (RU); Tsynaeva AA
The name of the patent holder: Ulyanovsk State Technical University
Address for correspondence: 432027, Ulyanovsk, ul. North Venet, 32, UlSTU, pro-rector for research
Date of commencement of the patent: 2003.06.16
The invention relates to a method for producing electric power and can be used for direct conversion of thermal energy into electrical energy. In the known method of operation of a thermoelectric generator, in which the electric energy consumed by the active load is generated in a thermocouple whose hot junctions are heated and the cold junctions are cooled, the feature is that a vortex tube is used as the source of the heating and cooling medium, which operates from Source of compressed gas. The technical result is fuel economy, reduction of environmental pollution by combustion products, increase of fire safety of the thermoelectric generator.
DESCRIPTION OF THE INVENTION
The invention relates to a method for producing electric power and can be used for direct conversion of thermal energy into electrical energy.
The closest method of the same purpose to the claimed invention for a plurality of features is the method of operating a thermoelectric generator (TEG), in which the electric energy consumed by the active load is generated in a thermoelement whose hot junctions are heated and the cold junctions are cooled (see Ye. E. Iordanishvili Thermoelectric power sources, Moscow: Sovetskaya radio, 1968, p.23, figure 4, FIG. 1), and adopted as a prototype.
The reasons preventing the achievement of the following technical result when using the known method adopted as a prototype is that it requires combustion of fuel to heat hot TEG junctions, which is associated with fire hazard and pollution of the environment by the products of combustion of fuel. In addition, the efficiency of cooling cold junctions of TEG with natural convection in the environment is quite low, and the use of heat exchangers for cooling significantly increases the cost of electricity.
The technical result is fuel economy, reduction of environmental pollution by combustion products, increase of fire safety of the thermoelectric generator.
Said technical result in the implementation of the invention is achieved in that in the known method of operation of the TEG, in which the electric energy consumed by the active load is generated in a thermoelement whose hot junctions are heated and the cold junctions are heated, the feature is that as a source of heating and The cooling medium uses a vortex tube that operates from a source of compressed gas.
The Applicant's prior art analysis, including a search for patent and scientific and technical information sources and identification of sources containing information on analogues of the claimed invention, made it possible to establish that the applicant did not find an analogue characterized by features identical to all the essential features of the claimed invention. The determination from the list of identified analogues of the prototype as the closest in the aggregate essential features of the analogue allowed us to identify a set of essential features in relation to the result to be observed in the claimed device, set forth in the claims. Therefore, the claimed invention corresponds to the condition of "novelty".
In order to verify the compliance of the claimed invention with the "inventive step" condition, the applicant conducted an additional search for known solutions to identify features that coincide with the features of the claimed device that are distinct from the prototype.
The results of the search have shown that the claimed invention does not directly follow from the prior art for a specialist, since the prior art determined by the applicant does not reveal the effect of the transformations required by the essential features of the claimed invention to achieve a technical result, in particular the claimed invention does not provide the following transformations:
- the addition of a known means by any known part (parts), attached (attached) to it according to known rules for achieving a technical result, in respect of which it is determined precisely such additions;
- replacement of any part (parts) of the known means with another known part to achieve a technical result, in respect of which the effect of such a substitution has been established;
- the exclusion of any part (element) of the facility with the simultaneous exception of the function due to its presence and the achievement of the usual result for such an exception (simplification, reduction of mass, dimensions, material intensity, increase in reliability, etc.);
- an increase in the number of the same type of elements to enhance the technical result due to the presence in the facility of just such elements;
- the execution of a known means or a part (s) thereof of a known material to achieve a technical result due to the known properties of this material;
- the creation of a means consisting of known parts, the choice of which and the relationship between which are implemented on the basis of known rules, recommendations, and the resulting result is due only to the known properties of parts of this tool and the connections between them.
The described invention is not based on changing the quantitative characteristic (s), the representation of such characteristics in the relationship or a change in its type. This refers to the case where the fact of the influence of each of the indicated characteristics on the technical result is known, and the new values of these characteristics or their interrelationship could be obtained on the basis of known dependencies, regularities.
Therefore, the claimed invention corresponds to the condition "inventive step".
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1 shows a prototype; Fig. 2 is a diagram showing the proposed method of operation of a thermoelectric generator: 1 - the p-branch of the thermoelement, 2 - the n-branch of the thermoelement, 3 - the switching plates, 4 - the hot junctions, 5 - the cold junctions, 6 - the active load, 7 - Vortex tube, 8 - cavity of hot flow, 9 - cavity of cold flow, 10 - source of compressed gas.
The information confirming the possibility of carrying out the invention to obtain the above result is as follows.
IMPLEMENTATION OF THE APPLICABLE METHOD
The electric current is created in the electrical circuit, which consists of the p-branches 1 and n-branches 2 of the thermocouple (having different signs of the coefficient of thermoelectromotive force), the connecting plates 3, when the hot junctions 4 of the thermoelement are heated, and the cold 5 - Placing them in the respective gas flows from the vortex tube 7. Hot and cold flows enter the corresponding cavities 8 and 9 during the temperature separation of the gas occurring in the vortex tube. To operate the vortex tube 7, compressed gas is used from the compressed gas source 10. Electricity consumption is carried out by the active load 6. Thus, this method of operation of the thermoelectric generator does not require fuel combustion, which leads to fuel economy, and increases the environmental and fire safety of electricity generation .
Thus, the above information indicates that the following set of conditions is fulfilled when the claimed installation is used:
- the means embodying the claimed method in its implementation, is intended for use in industry, namely as a way of generating electricity;
- for the claimed method as it is characterized in the independent clause of the foregoing claims, it is confirmed that it can be carried out using means or methods described in the application or prior to the date of priority;
- A means embodying the claimed invention in its implementation, is capable of ensuring achievement of the technical result perceived by the applicant.
Therefore, the claimed invention corresponds to the condition "industrial applicability".
CLAIM
A method of operating a thermoelectric generator in which the electric energy consumed by the active load is generated in a thermoelement whose hot junctions are heated and the cold junctions are cooled, characterized in that a vortex tube is used as the source of the heating and cooling medium, which operates from a source of compressed gas.
print version
Published on February 13, 2007
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