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Portable source for induction heating
Nevřela, Tomáš ; Martiš, Jan (referee) ; Knobloch, Jan (advisor)
The aim of this work is to realize and test a prototype portable source for induction heating of small parts. The project contains a theoretical basis of resonant circuits and induction heating. The device design is based on simulation results from the FEMM program, with which a focussing coil for induction heating has been designed. The parts of the thesis are the realization of the designed device, its putting into operation and the programming of the control.
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Induction heating for small applications
Hrbáč, Lukáš ; Foral, Štěpán (referee) ; Krbal, Michal (advisor)
This bachelor’s thesis covers the topic of induction heat and possible solutions for small applications. There is theoretical knowledge needed for design of an induction device and also principles of induction heat. In the thesis, there is described resonant circuit, which is the main part of induction heating device. Furthermore, usual interpretations of driver and power circuits are analyzed. This work describes different ways how to adjust operating frequency to achieve better results. This thesis also includes verification of functionality of such a device, measurement of operating parameters and efficiency. Instructions for laboratory exercise dealing with induction device are attached in the appendix.
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Induction heater converter
Holcman, Marek ; Knobloch, Jan (referee) ; Martiš, Jan (advisor)
This thesis deals with the design of a power converter for induction heating of iron components designed for a power of at least 2.5 kW. The induction furnace forms a series resonant LC circuit. The thesis contains a description and a design of individual parts of the converter, including wiring diagrams and a design of printed circuit boards. At the end of the work are then described the mechanical construction, the course of recovery and testing the operation of the inverter.
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Thermal calculation in design of resistance and induction devices
Krčál, Vít ; Foral, Štěpán (referee) ; Lázničková, Ilona (advisor)
This bachelor’s thesis focuses on thermal calculation of electric heating device and related theory. Selected topics in electric heating technology are explained, followed by the calculation in design of a crucible furnace and its automation using a computer program. The theoretical part first deals with the heat transfer mechanisms and their mathematical description. Further on, the thesis describes how heat is created in resistance and induction heating devices and mentions applications of these types of heating. The main part of the thesis focuses on the thermal calculation of the resistance crucible furnace for aluminium melting. The calculation relates to a cylinder-shaped model of the furnace with determined structure and deals mostly with heat loss, electric power input, thermal efficiency and design of heating elements. The calculation is achieved only in general and it is subsequently automated in Microsoft Office Excel® application. The computer program, which is also a part of the thesis, allows user to change input parameters and see how it affects results of the calculation. In the last chapter, an example of calculation for specific numeric data is presented. The main goal of the thesis is to automate the calculation. That can save some time while calculating and designing a crucible furnace.
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Additional device for the pushing out billets from inductor
Pešek, Josef ; Klepetko, David (referee) ; Kašpárek, Jaroslav (advisor)
The master thesis deals different types of additional device for the pushing out billets from inductor. It includes individual machines from different manufacturers induction heating and their comparison. I designed my own solution and created a 3D model according to which a fully functional device was made. By verifying the functionality, a numerical simulation of the dynamic extrusion process was created. Part of the work is drawing documentation.
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Design of a Robotic Cell for Additive Manufacturing of Glass Forms
Záveský, Filip ; Kubela, Tomáš (referee) ; Pochylý, Aleš (advisor)
This diploma thesis contains description of design of robotic cell, which automates process of glass neck ring welding. Robot arm is used as manipulator of part between entry conveyor, induction heating, automatic welding machine and outgoing palette. Construction process contains of making layout of the cell, design of needed workstations and minimalize risk of harm for human operator. The final construction design is simulated to verify robot reach and find manipulation time.
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Device for induction heating with a power of 2,5kW
Krist, Petr ; Vašíček, Adam (referee) ; Vorel, Pavel (advisor)
This thesis deals with designing of an induction heating of small iron parts. This device should be primarily designed for a farrier practice or an artistic blacksmithing. Considering the practice, the referential heated iron part will be a horseshoe. The basis of this device is a power inverter with serial resonant circuit connected to inverter as a load. This thesis contains designing and development of electrical and mechanical parts of whole device. It means control circuits, resonant circuit, box for heated part, etc. At the end of this thesis is realization of the device, electrifying, optimization and testing. During the test the horseshoe was heated close to demanded temperature.
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Laboratory heating of MV cables
Vala, Martin ; Lázničková, Ilona (referee) ; Krbal, Michal (advisor)
This thesis deals with options of laboratory heating of high voltage cables. First part of the work is reserved for description of heat as physical phenomenon and quantities connected with the heat. Second part deals with options of temperature measurements of objects in practical use and third part of the work deals with options of cables heating regarding the measurements according the ČSN rules. Practical part of diploma thesis is focused on physical phenomenon description, being under way during measurement using selected methods in individual components and optimization of results for practical measurements.
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