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随着摄影技术的发展以及科研、工厂、医疗单位对底片、照片的冲印质量要求的日益提高,显影液的恒温,越来越显得重要,对于彩色负片、正片的冲印尤其如此。我们国内摄影行业,为保持显影液在一定的温度范围,冬天通常用电炉或热灯泡烘烤升温,夏天则用冰块间接冷却降温。这种方法,既麻烦也难以真正保持温度的恒定,是很不理想的。目前,用两种不同材料的帕尔帖效应来制作小型冷阱或恒温器。用这种原理制作的恒温器有体积小、既可制冷又可采暖、操作维护方便,可靠性大等一系列优点。
With the development of photographic technology as well as scientific research, factories, medical units on the film, photo prints quality requirements increasing, constant temperature of the developer, more and more important, for color negatives, positive print especially. Our domestic photography industry, in order to maintain the developer in a certain temperature range, the winter usually electric furnace or heat bulb baking temperature, the summer is indirectly cooled with ice cooling. This method, not only cumbersome but also difficult to really keep the temperature constant, is not ideal. Currently, the Peltier effect of two different materials is used to make small cold traps or thermostats. The thermostat made by this principle has a series of advantages such as small size, cooling and heating, convenient operation and maintenance, high reliability and so on.