SU1607795A1 - Oven for burning ceramic denture - Google Patents

Abstract

The invention relates to dental and prosthetic techniques and can be used in the manufacture of ceramic dentures. The purpose of the invention is to provide a predetermined firing mode directly in the area where the dentures are located, which is achieved by a special form of mounting the heating chamber 1 and choosing the location of the temperature sensor 22. In addition, in addition to the task block, the load block and mode selection, and the temperature control block, the temperature-time synchronization block is inserted into the control system. The design of the furnace ensures the stability and linearity of the temperature-time characteristics in each zone of the structural transformations of the ceramic prostheses. 7 il.

Description

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Claims (1)

Claim Ceramic denture firing furnace, consisting of a cylindrical heating chamber with a working cavity and 8 heaters, a work table with a pallet located in the bottom of the chamber, control panel, furnace controls, including a task unit, a loading and mode selection unit, a temperature control unit with a temperature sensor, characterized in that, in order to provide a specified firing mode directly in the prosthesis placement zone, the furnace control elements additionally contain a synchronization block for the temperature-time characteristics, and the task unit additionally has a trigger unit, a time setting unit, a unit including vacuum system, the current time indicator, the outputs of which are connected to the unit for loading and selecting modes, a temperature setting unit, a temperature indicator and an analog-digital converter connected to the temperature control unit, and the unit for loading and selecting modes includes a start trigger, a register, and trigger triggers a cooling system, a digital converter, a reversible binary counter, a node for turning on the lifting mechanism, a node for turning on the cooling system, a block for turning on the vacuum system, and a synchronization unit The first input is connected to the start trigger of the loading and mode selection control unit and has the first and second programmable divider counters, two conversion zone counters, a sawtooth voltage generator, a clock generator, and the time setting unit of the task unit is connected to the second input of the synchronization unit, the first output the first divider counter is connected to the register of the loading and mode selection block, the second output is connected to the current time indicator, and the third and fourth outputs of the second divider counter are connected to with a reversible counter of the loading and mode selection block, the sawtooth voltage generator output is connected to the temperature control unit, and the temperature sensor is located on the work table directly in the prosthesis placement area and interacts with the temperature control unit. Fig.2. Uh 12 3 4 5 6 7 5 S 10 It 12 13 14 1Π.ΠΓίΠΓΌΠηΓντηηΓΊΓ1Γ 'Uba. J— Figl