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Tempered glass controllable steady-flow heating method based on heating furnace

A technology of tempered glass and heating method, applied in the field of machinery, can solve the problems of uneven heating, easy to cause harmonics, current fluctuations, etc., and achieve the effects of uniform control, stable current and small investment

Active Publication Date: 2021-03-09
浙江罗孚电梯部件股份有限公司
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  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to solve the above-mentioned problems in the existing technology, and propose a controllable and steady-flow heating method for tempered glass based on a heating furnace, which solves the problem of uneven heating in each area, pulses with large fluctuations in current, and easy to cause harmonics. wave problem

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  • Tempered glass controllable steady-flow heating method based on heating furnace
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Embodiment Construction

[0029] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0030] figure 1 In the two figures in group (1), the upper figure is a schematic diagram of the output voltage of the solid state relay, and the lower figure is a schematic diagram of the pulse signal. Group (2) and group (3) refer to group (1), and follow the rules until group (n). The example state in this figure is the initial stage of heating, and the mains power is 50Hz. figure 1 The middle is sequentially delayed by 0.5Hz, that is, 0.01s; the pulse period is 4Hz, that is, 0.08s, and the duty cycle is 75%. This situation is one of them and can be adjusted according to the actual situation.

[0031] Such as Figure 1-2 As shown, a controllable and steady flow heating method for tempered glass based on a heating fur...

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Abstract

The invention provides a tempered glass controllable steady-flow heating method based on a heating furnace, and belongs to the technical field of glass processing. According to the tempered glass controllable steady-flow heating method based on the heating furnace, the heating furnace comprises a heating furnace body, and temperature probes, a temperature controller, a current limiting controllerand a photoelectric isolation module which are uniformly distributed in the heating furnace body, and is characterized in that the heating furnace further comprises a plurality of heating groups; theheating group comprises a plurality of heating devices and solid-state relays corresponding to the heating devices in number, the heating devices are connected with the solid-state relays in a one-to-one mode, and the temperature controller and the current limiting controller are connected with the solid-state relays through photoelectric isolation modules. The tempered glass controllable steady-flow heating method comprises the following steps that a temperature controller outputs a control signal of each heating group according to temperature feedback of the temperature probe. The heating method has the advantages that each area is heated uniformly, the current does not generate pulses with large fluctuation, and harmonic waves are not easy to cause.

Description

technical field [0001] The invention belongs to the technical field of machinery, in particular to a controllable and steady-flow heating method for tempered glass based on a heating furnace. Background technique [0002] Tempered glass is a product obtained by cutting ordinary annealed glass into the required size, then heating it to about 700 degrees close to the softening point, and then cooling it quickly and uniformly. [0003] The interior of the tempering furnace is divided into multiple independent heating areas (ranging from dozens to hundreds), and each area has a temperature probe to control the heating temperature. From the time when the cold glass enters the furnace to when the hot glass exits the furnace, the power curve of the tempering furnace is a descending curve. [0004] Because the highest power load of the tempering furnace only appears in the short time when the cold glass enters; because the glass is placed at intervals, in most cases, the actual ope...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B27/012
CPCC03B27/012
Inventor 王剑
Owner 浙江罗孚电梯部件股份有限公司
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