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Method for controlling heating apparatus

A control method, technology of heating device, applied in furnace control device, electrical program control, lighting and heating equipment, etc.

Inactive Publication Date: 2011-03-09
TAMURA KK +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In this way, in the control method of sequentially starting the heating device of each heater according to the time interval obtained by the experiment in advance, if the unpredicted in the experiment occurs If the environment changes, it is possible to start supplying power to the next heater while the start-up of the first heater is not completed and its current consumption is still large. In this case, a power failure may occur.

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  • Method for controlling heating apparatus

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Embodiment Construction

[0038] Each heater 14 and temperature sensor 15 are connected to a controller 16 which controls the power supply to each heater 14 while monitoring the ambient gas temperature in each area. The controller 16 controls the start-up operation for starting the ambient gas temperature in each zone 1 (H) to 7 (H) and 1 (L) to 7 (L) when starting the main heating operation. , control the ambient gas temperature in each area 1(H)~7(H), 1(L)~7(L) to keep it at the prescribed preheating temperature or reflow temperature.

[0039] As the control method for the controller 19 to control each heater 14, the following control method is more suitable: control the switching circuit according to the temperature information from the temperature sensor 15, and control the pulse of the heater on-duty ratio (=on time / switching period). Wide modulation method (so-called PWM method), and switching frequency modulation method (so-called PFM method), etc.

[0040] In this way, refer to figure 1 The sh...

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Abstract

To provide a control method for a heating device capable of effectively starting the heating device by limited electric power consumption. (step 5) Heating priority is determined by a calculation of multiplying a temperature deviation of each zone by an inherent heat capacity coefficient K1 set per each zone. (step 6) Heating priority of a zone is subsidiarily determined by a calculation of multiplying an adjacent temperature deviation with an adjacent zone by an adjacent coefficient K2 set based upon an adjacent relationship. (step 7) An order from a zone with the maximum heating priority toa zone with the minimum heating priority is determined, one group is created by combining a plurality of zones including the zone with the maximum heating priority and the zone with the minimum heating priority, and groups are sequentially created by combining a plurality of zones in the same way from remaining zones. (step 8) Heater electric power consumption is limited in each group.

Description

technical field [0001] The present invention relates to a control method of a heating device used as a reflow furnace, a heating and curing furnace, and the like. Background technique [0002] In the control method of a heating device such as a reflow furnace, if the maximum power is simultaneously supplied to a plurality of heaters installed in the furnace when the device is started, the heating device can be started in a short time, but the power consumption at the time of device startup may be reduced. Exceeding the limits of the factory power equipment, generating a power failure. [0003] Therefore, a heater start-up method is proposed. The start-up time of the heaters is measured in advance through experiments. As the temperature of the heaters rises, the consumption current of each heater decreases, and the time taken for the consumption current to reach a certain value is stored in the control panel. In the section, the starting time is shifted at this time interva...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/02F27D19/00F27D21/00
CPCF26B21/10
Inventor 山口崇仁堂囿清志
Owner TAMURA KK
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