SU1517885A1 - Method of controlling thermal conditions for baking in bread baking oven - Google Patents

Abstract

The invention relates to the baking industry and can be used to control the baking process. The purpose of the invention is to reduce fuel consumption, reduce loss from batch and stabilize product quality. The method consists in that heat fluxes are measured in baking zones and, when their values deviate from the optimum, they regulate the heat supply to the baking chamber by varying the flow rate of the heat transfer medium to the corresponding zone using a regulating gate, and the fuel consumption is controlled by the deviation of the total heat flux in all zones from integral heat flux corresponding to the optimal baking mode. 1 il.

Description

The invention relates to the baking industry and can be used for baking bread and bakery products in ovens of various designs.

The purpose of the invention is to reduce fuel consumption, package and stabilize product quality by observing an optimal baking mode and improving the speed of the control system.

The method consists in controlling the thermal regime of baking in a baking oven; provide the maintenance of the specified meters in the heat exchange in the baking chamber by regulating the fuel supply to the burner of the oven, measure the heat flow in the baking zones and, when the values deviate from the optimum, regulate the heat supply to the baking chamber by changing the heat carrier flow to the corresponding zone using the regulating gate, while the fuel consumption in the furnace burner

regulate the deviation of the total heat flux in all zones from the integral heat flux corresponding to the optimal baking mode.

The drawing shows a block diagram of a thermal control system of the oven.

The method of controlling the thermal regime of baking in a chelating bakery oven is that, according to the curve of the optimal heat supply mode, they set the value of the required heat flux in each baking zone along the length of the baking chamber. The actual (measured) value of the heat flux in each zone is compared with the target value and, if there is a misalignment in the gate, the flow of heat carrier into this zone is controlled until the mismatch disappears. In this case, the flow rate of the coolant increases or decreases in accordance with the magnitude of the error, and the flow rate

SP

CX) 00 01

increase, if the deviation of the actual ziachaiin from; and 1 is negative, and reduce, if the deviation is positive. At the same time, the values of the tenlock fluxes in all zones are summarized and the total value compared to the integral HLiiM is compared with the gentile trace of the optimal1H) mode B1) Ichchn of this type of products. In the presence of a rush,: 1, resuming the adjustment of the flow rate of the fuel used during the burner until the discrepancy disappears. The fuel consumption is regulated in accordance with the magnitude and sign of the error, similarly to the regulation of the flow rate of the coolant in the furnace zones.

Example. Before drawing out products of the endless range, in accordance with the optimum tenlone supply mode by setting devices, having 1 in regulators 1, set the required values of heat flux through the baking chamber baking chamber 2, and setting control value 3, corresponding to the optimum baking mode this type of products. After starting the shutdown and completing the transition process, the control system is turned on. Moreover, in case of deviation of the high flow rate perceived by sensors 4 in any zone from a predetermined one, the resultant signal of the regulator enters the actuator 5, which is set in motion by I1iber 6, which changes the flow rate of the heat transfer medium to the baking zone. When moving the gate is proportional to ve. The reason for the mismatch, and the direction of the repetition correspond to the mismatch sign in such a way that at a small value of the heat flux, the perception 1H) sensor, as compared with the set point, the flow of the coolant into the zone increases, and when bo-HieM - is reduced. Similarly, they correct the consumption of heat from the other 30Hiji. Simultaneously signal 1Y from all sensors 4

0

five

0

five

0

five

0

are summed in adder 7, and the resulting signal enters regulator 3, where it is compared with the given one. If there is a mismatch, the resultant signal, equal to the mismatch value, enters the input of the actuator 8, which with the help of the working body 9 changes the fuel consumption in the burner 10 proportionally to the magnitude of the mismatch. In this case, if the total signal is lower than the given fuel, it decreases, otherwise case increases.

Using this method of controlling the thermal mode of baking, in comparison with the known method, it is possible to achieve a reduction in fuel consumption and losses from the package, as well as to stabilize the quality of the product by () organizing the optimum cooking mode and increasing the speed of the control system.

Claims (1)

Invention Formula A method of controlling the thermal regime of a notch in a baking oven, which involves regulating the supply of fuel to the burner and heat treatment BW to the appropriate zone of the oven, characterized in that, in order to reduce fuel consumption, losses from unas and stabilize the quality of the product. the total value of each zone is compared to the furnace zone, the measured tenil flux of each zone is compared with the optimal value of the heat flux for the given zone, and the total heat flux is compared with the HHTCi pa.TbHbiM thermal parameter current, and regulation of fuel supply to the furnace gore.chku carried out based on the error sum value tenlovoi) stream integrals; | nym and controlling the supply of heat to the furnace zone sootvetstvuyushaya carried procession; | Depending on the discrepancy between the current value of the tenl flux of the given zone and the optimum value.