Standards of medical lamp

Medical lamp is an important tool for surgery, qualified for operation shadowless lamp, some key performance indicators to meet the standards before they can, are listed below on several important performance parameters, we buy can refer to the following standards.

  First, the most important thing is to have sufficient illumination, medical lamp is up 150000LUX above, the illuminance luminance close to the sunny summer, the sun, and the actual use of the illumination generally 40000 ~ 100000LUX most appropriate too bright, then it will affect vision. Medical lamp providing adequate illumination also should avoid glare beam on surgical instruments. Glare also affect vision and visual, easy to make eye fatigue doctors, surgeons unfavorable surgery, normal medical lamp of the operating room and should not be much difference, some of the standard illumination provides overall illumination lighting should be local one-tenth of the lighting illuminance is most appropriate. Overall illumination of the operating room should be 1000LUX above.

  Secondly, shadowless operation shadowless degree is higher, shadowless degree is an important feature and performance indicators surgery shadowless. Any shadows in the surgical field of view will be formed for the doctor observation,medical pendant, identification and surgery, in addition to good surgical shadowless lamp can provide sufficient illumination, we must also have a high shadowless degree, ensure the surgical field surface and deep tissue have a certain luminosity.
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Working principle of condenser

Condenser, a mechanical refrigeration system, is a heat exchanger, can gas or vapor into a liquid, the tubes of the heat, a rapid manner, reached the air in the vicinity of the tube. Condenser process is exothermic process, the condenser temperature is higher.

Many power plants use the turbine condenser exhaust steam is condensed. Refrigeration plant with a condenser to condense the vapor of ammonia and freon refrigeration like. Petrochemical industry with the condenser of hydrocarbons and other chemical vapor condensation. During the distillation, the vapor to a liquid state device is also called a condenser. All condensers heat from the gas or vapor while running away with air cooled condenser.

For some applications, the gas must pass through a long tube (usually coiled into a solenoid), so that the heat loss to the surrounding air, the thermally conductive metal such as copper is commonly used to transport vapor. To improve the efficiency of the condenser fins are often attached to the pipe in order to accelerate heat dissipation. Flat heatsink is made of metal with good thermal conductivity. Usually this type of condenser fan is also used to force air through the fins and go to the tropics. The role of the general principles of refrigeration compressor refrigerator is to compress low pressure steam into high pressure steam, the steam so that the volume decreases, the pressure increases.

The compressor suction pressure from the evaporator to a lower working fluid out of the steam, so that the pressure rise into the condenser, condensed in the condenser to a higher pressure fluid, after throttling the throttle valve, the pressure becomes relatively low liquid into the evaporator, absorbing heat in the evaporator is evaporated into low pressure steam, thereby completing the refrigeration cycle.

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