Novel cold air flow vortex type differential pressure pre-cooling device

Abstract

The present invention discloses a novel cold air flow vortex type differential pressure pre-cooling device. The novel cold air flow vortex type differential pressure pre-cooling device consists of a condensing unit, a pre-cooling room, a ventilation system and a control system; the pre-cooling room is composed of a device room and an agricultural product processing room; the pre-cooling room is successively provided with a fin tube evaporator containing a cold air machine, the ventilation system and the agricultural product processing room; the enclosure structure of the device room is polyurethane insulation boards; an outlet of the condensing unit is connected with an inlet of the fin tube evaporator containing the cold air machine via an arranged electronic expansion valve; and an outlet of the fin tube evaporator containing the cold air machine is connected with an inlet of the condensing unit. The novel cold air flow vortex type differential pressure pre-cooling device is based onan air jet technology and an airflow vortex effect, combines a unique air inlet eccentric structure design, enables cold air flow to conduct a reverse vortex motion, forms a central low pressure zone, improves pre-cooling pressure difference on both sides of products and further enhances the pre-cooling effect.

Description

technical field [0001] The invention relates to the fields of low-temperature refrigeration, refrigeration and agricultural product processing engineering, more specifically, relates to a device for improving food precooling efficiency by using air jet technology and vortex entrainment effect, and also belongs to the field of fluid mechanics. Background technique [0002] In order to improve the preservation quality of agricultural products such as fresh fruits and vegetables and meat products, methods such as precooling, freezing and refrigeration, air conditioning, plastic wrap and biological preservatives are often used in the prior art to extend the shelf life. The pre-cooling link is the most important fresh-keeping technology in the cold chain system, especially the rapid pre-cooling at the place of production, which can reduce the consumption of nutrients in agricultural products in the first place and inhibit the activity of pathogenic bacteria, which is very importan...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the existing differential pressure pre-cooling technology, solve the problems of large differences in pre-cooling effects of goods at different positions, air short circuit, and high energy consumption of the system, and develop a new type of cold air flow vortex differential pressure pre-cooling device

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