Heating plate based on large-power thick-membrane resistor, and parallel screen printing method thereof
A technology of thick film resistors and heating plates, applied in the direction of ohmic resistance heating, circuits, resistors, etc., can solve the problems of easy breakdown of printed resistor circuits, achieve long service life, low repair rate, and reduce process difficulty.
Inactive Publication Date: 2014-10-08
沈闽江
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a thick film heater based on high-power thick Heating plate for film resistance circuit and a parallel screen printing method based on heating plate for high power thick film resistance circuit
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[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples, but the protection scope of the present invention is not limited thereto.
[0026] refer to figure 1 , the heating plate based on the high-power thick film resistance circuit of the present invention includes a substrate, a thick film resistance circuit and an insulating layer, and the thick film resistance circuit is printed on the substrate by parallel screen printing, that is, the thick film resistance circuit is a parallel circuit , The insulating layer is coated on the outside of the thick film resistor circuit, which has an insulating effect. The thick-film resistance circuit includes a positive electrode resistance strip 1, a negative electrode resistance strip 2 and several branch resistance strips 3 with the same resistance value. It is connected in parallel between the positive resistance strip 1 and the negative resistance strip 2 to fo...
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The invention relates to a heating plate based on a large-power thick-membrane resistor, and a parallel screen printing method of the heating plate based on the large-power thick-membrane resistor. The heating plate comprises a substrate, a thick-membrane resistor circuit and an insulation layer. The thick-membrane resistor circuit comprises an anode resistor strip, a cathode resistor strip and a plurality of same-resistance branch resistor strips. The plurality of branch resistor strips are respectively connected in parallel between the anode resistor strip and the cathode resistor strip, and an interval is arranged between two neighboring branch resistor strips; the parallel screen printing method involves calculating to obtain corresponding square resistance to carry out parallel screen printing according to a thick-membrane resistor circuit parallel printing mode. According to the invention, a design idea is utilized that circuit breaking of a parallel circuit branch exerts no influences on a total loop, the problem of repair caused by breakdown of certain parts of the thick-membrane resistor circuit due to inevitable technological difficulties in a printing process of the thick-membrane resistor circuit is avoided, the service life is long, and the repair rate is low.
Description
technical field [0001] The invention relates to the technical field of high-power heating plate resistance circuit design, in particular to a heating plate based on a high-power thick-film resistance circuit and a parallel screen printing method for the heating plate based on a high-power thick-film resistance circuit. Background technique [0002] Thick film heaters have been widely used in people's production and life due to their advantages of fast heating speed and high power. Thick film heaters generally include substrates, thick film resistor circuits and insulating layers. Thick film resistor circuits are generally based on the heater The heating power uses screen printing to print the resistance paste on the substrate. Generally, the power per unit area of the heater will be controlled at 20-30w / cm 2 In order to ensure the stability of the heater work. [0003] Existing thick-film heaters generally design thick-film resistance circuits in series. Using series prin...
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IPC IPC(8): H05B3/20H01C17/065
Inventor 张卓鹏沈闽江沈茂枫
Owner 沈闽江