Rice fresh keeping, refrigerating and tempering system

Abstract

The invention provides a rice fresh keeping, refrigerating and tempering system which is installed outside a granary. The rice fresh keeping, refrigerating and tempering system includes an ultrasonichumidifier, an evaporator, a compressor, a condenser, a liquid storage device, a drying filter and various pipelines, and also includes a PLC electrical control box, a ventilation mechanism and various sensors, and a humidification mechanism, a refrigeration loop, the ventilation mechanism and a tempering and temperature adjusting mechanism are formed. The unit provided by the invention integratesnatural ventilation, refrigeration, dehumidification, humidification and tempering together, and the outlet air temperature is set to be 5-15 DEG C, automatic adjustment can be carried out, and the rice fresh keeping, refrigerating and tempering system is suitable for low-temperature preservation and storage of rice. Energy saving is better achieved particularly in the areas with the large annualtemperature difference and daily temperature difference or the area where the temperature of rice grain piles can reduce to 10 DEG C or below in autumn and winter, and the energy saving effect is also very good.

Description

technical field [0001] The invention belongs to the field of rice preservation, and in particular relates to a rice preservation, refrigeration and slowing system. Background technique [0002] With the growing demand for low-temperature storage of grain, various methods and equipment for low-temperature storage of rice have emerged, but disorderly competition has caused many products with high energy consumption, single function, and poor performance to enter the market, which is not conducive to rice technology, The development of green fresh-keeping storage. [0003] In the development of rice storage air treatment technology in the past few years, equipment factories have used many different ways to reduce and control rice temperature and humidity. For example, grain coolers, axial flow fans, centrifugal fans for ventilation and cooling, dehumidification, household air conditioners, industrial air conditioners, grain humidification and conditioning machines, etc., but t...

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Problems solved by technology

[0005] Among them, the advantage of the grain cooler is that it can be moved, which is suitable for emergency cooling in the rice warehouse. Although the grain cooler can be used first to reduce the temperature in the rice warehouse to 15°C in summer, and then controlled by the grain surface temperature control unit, the grain surface The minimum outlet temperature of the temperature control unit is about 12 degrees, and the outlet temperature is too high to meet the requirements of low-temperature storage. It can only be used in small-scale rice quasi-low temperature storage similar to rice processing plants. At the same time, the disadvantage of the grain cooler: the cooling load capacity is too large ;High wind pressure; severe water loss; high operating costs, not suitable for use in low-temperature storage for packaged rice

Household or industrial air-conditioning systems have a wider range of applications due to their ease of use, but their functions are relatively single, the air outlet temperature, air supply distance, anti-corrosion requirements, and the ability to adjust air humidity are poor, and cannot meet the fresh-keeping requirements of rice storage. In winter, the ventilation and cooling of axial flow fans and centrifugal fans will cause serious water loss in the rice warehouse, and the humidity control cannot meet the ideal fresh-keeping requirements.

The superficial ground energy technology uses three systems to control the temperature, humidity, and temperature of the granary with three sets of units respectively. The degree of integration is low, the investment cost is high, the system is complex, the failure rate is high, the energy attenuation is serious in the later stage of operation, and the maintenance cost is low. stay high

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