As in recent years the ceaseless development of scientific instrument is mixed gain ground, product of form a complete set of of all kinds instrument also got the development of advance rapidly, circular water cooler is a among them, its action is the quantity of heat that produce instrument place through temperature relative to inferior water is taken away, make the temperature of instrument part maintains thereby in an inferior level. At present circular water cooler is used extensively at laser to hit sign chance, Laser Cutting machine, laser beam welding to receive, the laser equipment such as laser stiletto. Because tap water is hydraulic and flabby,mix scale is more jam imperceptible Xiaoguan, affect the normal movement of the machine; And of the contradiction that water natural resources is in short supply increasingly outstanding, and instrument equipment (especially accurate instrument) taller and taller to the requirement of the water quality of cooling water and temperature, circular water cooler also makes the first selection of increasing user. Means of circular water refrigeration cools relative to tap water for, although one-time investment is larger, but the advantage that it is having means of tap water refrigeration to cannot be likened to: (Means of refrigeration of 1) loop water can be managing a large number of precious water natural resources; (Cooling means uses 2) loop water go ionic water or distilled water, furring won't arise in the canalage of instrument equipment, can prolong the service life of laser equipment, increase the stability that its measure; (Means of refrigeration of 3) loop water (refrigeration) can adjust arbitrarily the temperature of cooling water. Circular water cooler is divided by its function, have blame refrigeration model with two kinds of refrigeration blame refrigeration principle blame refrigeration the principle is compared commonly simple, basically have a water pump, radiator, fan and cistern are comprised. Its action can be to be used only drop in temperature, cannot accuse commonly lukewarm, and the discretion with warm water depends on the environmental temperature that sets the position. Because rely on fan to blow water to radiator to come true,drop in temperature, the water in instrument canalage is consequently warm impossible under environmental temperature. So cooler of water of blame refrigeration loop applies to lukewarm to water control commonly the demand is not high, produce the instrument with inferior quantity of heat or equipment. Refrigeration cooler of water of principle refrigeration loop differs according to its work way, can divide again stop type and blame to open to open halt form two kinds. Its are collective the principle is to use temperature controller to undertake temperature is controlled, undertake refrigeration through compressor, undertake heating up exchange with water again, make the thermal drop of water small. Because be not the property that opens cooler of water of loop halting form far excel is opened halt form, already was used generally by foreign manufacturer at present consequently, the circular water that average overseas accurate instrument firsts wife all is opened to be not halt form. Because be not the technical difficulty with the manufacturing constant presence that opens cooler of water of loop halting form, be assembled simply hard or transform, have abroad or production of ability of foreign investment company only at present consequently, and need certain dimensions, the price also stops type to want than opening a few taller. The main manufacturer of this kind of product has: American THERMONESLAB, american LABTECH, german JULABO. Among them American LABTECH is built in home have a plant, the H series boiler circulation that they produce used advanced PID lukewarm accuse to reach HotGasBypass technology, at the same time shirt-sleeve efficient board type heat exchanger, high-pressured blade pump reachs agent of refrigeration of the environmental protection that do not have fluorine to wait for a technology, its product refrigerating capacity arrives from 750W 9000W, accuse lukewarm precision to all be ± 0. 1 ℃ . The price of its product and service are consequently opposite at there all is definite advantage for company of other foreign country. Of condenser of LabTech low temperature accuse lukewarm limits to be - 20 ～ 35 ℃ , without fluorine environmental protection, apply extensively at laser domain. CNC Milling
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