Temperature controlling method of crucible spraying and heating turn table
A technology of heating rotation and crucible spraying, which is applied in the field of temperature control of crucible spraying heating rotary table, can solve the problems affecting the quality of spraying, without adding over-temperature protection, etc., and achieve the effect of saving energy and improving spraying quality
Inactive Publication Date: 2012-02-08
TRINA SOLAR CO LTD
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Problems solved by technology
The existing crucible heating rotary table has four side plates and a bottom plate, and there are heating plates on the side plates and the bottom plate. The existing problem is: too high local temperature will affect the quality of spraying, and the existing equipment does not add over-temperature protection
Method used
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[0009] Such as figure 1 As shown, a temperature control method for a crucible spraying heating rotary table, a thermocouple 12 is respectively installed on the four side plates and the bottom plate, and the signal measured by the thermocouple 12 is transmitted to the temperature controller 1, and the wiring of the heating plate 2 Through the normally closed terminal of the thermostat 1, that is, the thermostat 1 acts as a switch. When the temperature measured by the thermocouple 12 is greater than the set value of the thermostat 1, the heating plate 2 stops heating, and the temperature is lower than When the lower limit value is set, the heating plate 2 heats up.
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The invention relates to a temperature controlling method of a crucible spraying and heating turn table. The method comprises the following steps of: respectively installing one thermocouple on four side plates and a bottom plate, and transmitting signals measured by the thermocouples back to a temperature controller. A connecting wire of a heating plate passes through a normally closed terminal of the temperature controller, i.e. the temperature controller acts as the role of a switch. When the temperature measured by the thermocouples is greater than the set value of the temperature controller, the heating plate stops heating; and when the temperature is lower than the set lower limit, the heating plate starts heating. The invention has the advantages of improving spraying quality and saving energy.
Description
technical field [0001] The invention relates to a temperature control method for a crucible spraying heating rotary table. Background technique [0002] Before charging the solar ingot crucible, silicon nitride needs to be sprayed to isolate the quartz crucible from the silicon liquid. During the spraying process, the quartz crucible needs to be heated, so that the silicon nitride liquid is evenly adsorbed on the surface of the crucible to form a powder coating. The existing crucible heating rotary table has four side plates and a bottom plate, and there are heating plates on the side plates and the bottom plate. The existing problem is: too high local temperature will affect the quality of spraying, and the existing equipment does not add over-temperature protection . Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a temperature control method for a crucible spraying heating rotary table, which prevents the he...
Claims
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Inventor 应建平徐志军刘平
Owner TRINA SOLAR CO LTD