Constant temperature and constant humidity system device suitable for precision casting environment

Abstract

The invention discloses a constant temperature and constant humidity system device suitable for a precision casting environment. The constant temperature and constant humidity system device is used for adjusting the humidity and the temperature in a workshop, and an underground air return way is arranged in the workshop; the device comprises a box, an air supply pipe, an air return pipe and a temperature and humidity PLC, and the box comprises a dehumidification device, a cold load processing device, a temperature and humidity fine adjustment device and a blower which are connected in sequence; one end of the air supply pipe is connected with an outlet of the blower, and the other end of the air supply pipe is connected to the workshop; the dehumidification device comprises a fresh air opening and an air return opening, and the air return opening is connected with the underground air return way of the workshop through the air return pipe; and the temperature and humidity PLC is used for controlling the dehumidification device, the cold load processing device and the temperature and humidity fine adjustment device. The constant temperature and constant humidity system device is suitable for high-accuracy constant temperature and constant humidity adjustment of a large-scale precision casting system, the temperature and the humidity are treated in a unified and concentrated manner, the stability of the workshop environment is guaranteed, and the energy is saved.

Description

technical field [0001] The invention relates to the field of precision casting, in particular to a constant temperature and humidity system device suitable for the precision casting environment. Background technique [0002] For a long time, the shell-making process of precision casting has restricted the development of my country's high-precision equipment manufacturing industry. At present, high-precision and cutting-edge castings in China mainly come from imports. Among them, the indoor environment (temperature, humidity) of precision casting is one of the main factors affecting the precision of castings. [0003] The shell making of precision casting is to apply the prepared slurry on the surface of the wax model, and place it in a constant temperature and humidity environment for drying. The coating will emit a large amount of water vapor and a small amount of heat during the drying process. . Changes in ambient temperature and humidity directly affect the drying rat...

AI Technical Summary

Problems solved by technology

Humidity and temperature are treated separately, and two sets of dehumidification and constant temperature air-conditioning systems need to be set up separately in the environment. Because the humidity and temperature of the air are two closely related parameters, one changes and the other changes accordingly, and the temperature and humidity are treated separately. The method cannot take into account the correlation of temperature and humidity, which will affect the stability of the system, and will cause the humidity of the position close to the dehumidifier to be too low, and the humidity of the position far away from the dehumidifier to be too high

The constant temperature and humidity machine reduces the reheating energy consumption of the system through its own compressor heat exchange system, but the adjustment of the compressor will be delayed, which will cause the subsequent reheating system to be unstable. The dew point temperature of the air treated by the constant temperature and humidity machine is generally 10°C, the dehumidification capacity is limited, it is only suitable for small precision casting systems, and the accuracy of the constant temperature and humidity machine cannot be controlled within 5%, while the accuracy of high-precision precision casting workshops needs to be controlled within 3%.

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