Cooling system, ultraviolet curing machine and cooling method of cooling system
A cooling system and curing machine technology, applied in the cooling/heating devices of lighting devices, nonlinear optics, other household appliances, etc., can solve the problems of shortened service life, reduced cooling water injection flow, affected service life, etc., to maintain stability performance, reducing impact and prolonging service life
Active Publication Date: 2013-09-04
HEFEI BOE OPTOELECTRONICS TECH +1
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Problems solved by technology
[0003] Among them, the water injection flow rate in PCW will have a great impact on the service life of the lamp tube Lamp in the ultraviolet curing machine and the curing effect formed. If the water injection flow rate is too small, the temperature of the lamp tube Lamp will be too high, resulting in shortened service life and eventually The solidification effect formed is not good, and if the water injection flow rate is too large, it will cause waste, because usually in the display manufacturing process, the equipment operates 24 hours a day, and excessive process cooling water will cause a lot of waste for a long time
[0004] Moreover, in the PCW cooling system currently used in UV Cure equipment, the temperature difference between the UV lamp (UV Lamp) during the curing process and the non-curing process reaches 18°C. Such a large temperature difference will reduce the life of the UV Lamp. , UV Lamp is expensive, and the loss is huge for a long time
[0005] The existing technology uses the process cooling water system PCW to cool the UV curing machine. Although the temperature of the UV Lamp is monitored in real time, the flow rate of the cooling water injection increases when the temperature rises, and the flow rate of the cooling water injection decreases when the temperature decreases. However, this method is only available when the UV Lamp is used. Feedback to the flow control valve after the temperature rises will cause a certain lag, and the UV Lamp will be damaged after the temperature rises, which will seriously affect the service life
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[0042] In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.
[0043] The cooling system for the ultraviolet curing machine described in the specific embodiment of the present invention, the cooling system includes a cooling water transmission device and a water outlet valve, the cooling water passing through the cooling water transmission device and flowing out from the water outlet valve is used to cool the The curing lamp tube of above-mentioned ultraviolet curing machine is cooled, and wherein, described cooling system also comprises:
[0044] A light intensity detection device for detecting the light intensity when the curing lamp is irradiated;
[0045] The flow control device is used to increase the water outlet flow rate of the water outlet valve when the light intensity of the curing lamp...
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The invention provides a cooling system applied to an ultraviolet curing machine, the ultraviolet curing machine and a cooling method of the cooling system. The cooling system comprises a cooling water conveying device, a water discharge valve, a light intensity detection device and a flow control device, wherein the light intensity detection device is used for detecting the light intensity during irradiation of a curing lamp; and the flow control device is used for increasing the water discharge flow of the water discharge valve when the light intensity of the curing lamp increases to reach a first threshold and decreasing the water discharge flow of the water discharge valve when the light intensity of the curing lamp decreases to reach a second threshold. According to the cooling system, the ultraviolet curing machine and the cooling method, the light intensity detection device is arranged on a machine irradiation portion of the ultraviolet curing machine to detect the change of the light intensity of the curing lamp of the ultraviolet curing machine, flow is adjusted before the change of the temperature of the curing lamp by utilizing the light intensity, so that the stability of the temperature of the curing lamp is kept, impact of the temperature change to the curing lamp is reduced, and the service life of the curing lamp is prolonged.
Description
technical field [0001] The invention relates to the technical field of liquid crystal display manufacturing, in particular to a cooling system for an ultraviolet curing machine in the liquid crystal display manufacturing process, an ultraviolet curing machine and a cooling method thereof. Background technique [0002] In the thin-film transistor liquid crystal display (TFT-LCD, Thin-Film Transistor Liquid Crystal Display) manufacturing industry, the UV curing machine in the one-time injection process (ODF, One drop Fill) production line needs to use process cooling water (PCW, Process cooling water) The system cools down. [0003] Among them, the water injection flow rate in PCW will have a great impact on the service life of the lamp tube Lamp in the ultraviolet curing machine and the curing effect formed. If the water injection flow rate is too small, the temperature of the lamp tube Lamp will be too high, resulting in shortened service life and eventually The resulting s...
Claims
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Login to View More IPC IPC(8): F21V29/02G02F1/1339F21V29/503
CPCB29D11/00442F21V29/50
Inventor 井杨坤
Owner HEFEI BOE OPTOELECTRONICS TECH