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With the rapid development of science and technology, the types of medical equipment are increasing day by day, and their applications in medical work are becoming increasingly widespread. Their working environment also has strict temperature requirements. To ensure that medical equipment works in the correct temperature environment, they are usually equipped with cooling and heat dissipation systems. A good cooling and heat dissipation system can ensure that medical equipment operates safely and reliably, with low energy consumption, low maintenance rate, and high work efficiency. Once the cooling and heat dissipation system fails, it will cause the equipment components to heat up seriously due to the heat generated during operation, eventually causing abnormalities or even damage to the medical equipment. Every year, countless medical equipment in our country are paralyzed due to poor heat dissipation performance, resulting in heavy losses. Therefore, the research on cooling and heat dissipation systems of medical equipment is particularly important.

Heat sources in medical equipment

The heat source in medical equipment refers to some internal components whose temperature rises due to rapid rotation or vibration and working under high pressure conditions during the working process of the medical equipment. Due to the increase in temperature, these components cannot work properly. , damaging medical equipment. Through investigation and research, it was found that the heat sources of medical computers include graphics cards and CPUs; the heat sources of electrocardiogram monitors include circuit boards and switching power supply boards; the heat sources of laser therapy instruments are laser emission tubes; the heat sources of CT machines include X-ray tubes, circuit boards, and detectors. The heat source of DSA imaging equipment includes X-ray tubes and circuit boards. The heat sources contained in products of different manufacturers are slightly different. For example, in addition to X-ray tubes, the heat source of Siemens DSA imaging equipment also includes flat-panel detectors; in magnetic resonance imaging equipment, Heat sources include magnets, gradient field coils, radio frequency coils, and gradient amplifiers; linear accelerator heat sources include accelerating tubes, deflection magnets, accelerating tube coils, primary collimators, klystrons, klystron coils, pulse transformers, etc.

Medical cooling thermal system method

By understanding the generation mechanism and transfer mode of heat, we know that heat cannot spontaneously transfer from low-temperature objects to high-temperature objects, but can transfer from high-temperature objects to low-temperature objects. Using this, people have developed cooling and heat dissipation systems in medical equipment. , the heat is taken away through the continuous circulation of low-temperature coolant, so that medical equipment can work normally.

In medical work, because there are heat sources inside medical equipment and there are many factors that affect the temperature of internal components of medical equipment, more cooling and heat dissipation measures are taken. The cooling and heat dissipation methods adopted by medical equipment mainly include solid radiator cooling, natural air cooling, forced air cooling, circulating water cooling, circulating oil cooling, and semiconductor cooling. Different medical equipment uses different cooling and heat dissipation methods. Method, small and medium-power medical equipment often use forced air cooling for heat dissipation; electronic components or components that work under high temperature environmental conditions and have a high heat production rate during work are more suitable for liquid cooling with relatively high cooling efficiency. For components with a high heat production rate during operation, when conventional cooling methods cannot meet the requirements, evaporative cooling, heat pipes, boiling evaporation, micro-channel cooling or spray cooling or even thermoelectric refrigeration can be used. Other cooling methods are used for cooling. Many large-scale medical equipment use two or more heat dissipation methods to cool and dissipate heat from internal components.

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