Immersion plate type ice storage system

Abstract

The invention discloses an immersion plate type ice storage system which comprises a water tank, a refrigeration shell, a sealing door panel, an air-cooled condenser, a stainless steel evaporation plate set, a refrigeration shell frame, an expansion valve, a filter, a liquid return pipe, a compressor, an air inlet pipe and an air blower. The stainless steel evaporation plate set is immersed in thewater tank, a refrigerant absorbs heat of water outside a plate when passing through a cavity of the immersed stainless steel evaporation plate, finally an ice film is evenly paved on the evaporationplate, and the ice film is statically stored in the water tank. Air driven by the air blower enters a thin pipe in a stainless steel bubbling pipe set, continuously tumbling water in the water tank evenly melts the ice film on the immersed stainless steel evaporation plate, ice water at extremely low temperature is obtained, the unit is small, the occupied area is small, and the maximum output load requirements can be met; and transportation is facilitated, full stainless steel materials are adopted, the immersion plate type ice storage system is clean and hygienic, a refrigeration system isopen, cleaning and maintaining are facilitated, the adopted refrigerant is fewer, and energy saving and environment protection are better achieved.

Description

technical field [0001] The invention relates to the technical field of refrigeration and food cooling, in particular to a submerged plate ice storage system. Background technique [0002] In developed countries, more than 60% of buildings have used ice storage technology. Judging from the application situation in the United States, Japan, South Korea and other countries, ice storage technology can be popularized and used in areas or areas where air-conditioning loads are concentrated, peak-to-valley differences are large, and buildings are relatively concentrated. Ice storage is an important energy-saving means in the new century. Development direction One of them is a new technology that benefits mankind and has broad development prospects. It has good social and economic benefits. Today, when energy and environmental protection are becoming increasingly important in the world, ice storage will be used to shift peaks and valleys in China's electricity and improve power grid...

AI Technical Summary

Problems solved by technology

[0003] 1. The ice coil system is also called refrigerant coil and external ice melting. This system is also called direct evaporative cold storage system. The evaporator of the refrigeration system is directly placed in the cold storage tank, and the ice freezes on the evaporator coil. It is not easy to use mechanical methods to clean, it is difficult to overhaul, and there must be health and safety problems;

[0004] 2. Internal ice-melting ice storage is to send the low-temperature ethylene glycol aqueous solution (secondary refrigerant) produced by the chiller into the plastic or metal tube in the ice storage tank (barrel), so that the water outside the tube freezes. The ice storage tank can freeze more than 90% of the water into ice. When the ice is melted, the high-temperature ethylene glycol aqueous solution flowing back from the load end of the air conditioner enters the ice storage tank, flows through the plastic or metal coil tube, and freezes the ice outside the tube. Melt, the temperature of the ethylene glycol aqueous solution drops, and then it is pumped back to the air conditioner load end for use. Ethylene glycol is a colorless, odorless, sweet liquid that is toxic to animals. The lethal dose for humans is about 1.6g / kg, which is low Volatile, there are potential safety hazards;

The circulating water pump continuously pumps the water from the ice storage tank to the top of the evaporator and sprays it down, forming a thin layer of ice on the surface of the flat evaporator until the ice layer reaches a certain thickness (generally between 3 and 6.5mm) At this time, the four-way reversing valve in the ice-making equipment is switched, so that the exhaust gas of the compressor directly enters the evaporator and heats the plate surface, so that the ice falls off, which is the so-called "harvesting" process of ice. Ice, the ice storage rate of the cold storage tank can reach 40% to 50%. Since the plate evaporator requires a certain installation space, dynamic ice production is not suitable for large and medium-sized systems, and the cost is high

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