Combined hot-fluorine-defrosting enhanced vapor injection freezing and hot water unit system for refrigeration storage

Abstract

The invention discloses a combined hot-fluorine-defrosting enhanced vapor injection freezing and hot water unit system for a refrigeration storage. The combined hot-fluorine-defrosting enhanced vaporinjection freezing and hot water unit system for the refrigeration storage comprises an enhanced vapor injection mechanism, a four-way reversing valve, a defrosting mechanism, a condensing heat recovery mechanism, a coaxial heat exchanger, a high-pressure liquid storage device, a plate heat exchanger and a refrigeration evaporator, wherein the enhanced vapor injection mechanism is connected with the four-way reversing valve, the high-pressure liquid storage device and the plate heat exchanger; the defrosting mechanism is connected with the condensing heat recovery mechanism, the plate heat exchanger and the refrigeration evaporator; the condensing heat recovery mechanism is connected with the coaxial heat exchanger, the high-pressure liquid storage device, the plate heat exchanger and therefrigeration evaporator; and the four-way reversing valve is connected with the coaxial heat exchanger and the refrigeration evaporator. The enhanced vapor injection mechanism comprises a refrigeration compressor, an EVI electronic expansion valve, a drying filter, an oil separator and a gas-liquid separator. The combined hot-fluorine-defrosting enhanced vapor injection freezing and hot water unit system for the refrigeration storage is applicable to preparing domestic hot water at a temperature higher than 45 DEG C during refrigeration running at a storage temperature of minus 30 DEG C, of the low-temperature refrigeration storage; the low-temperature refrigeration storage adopts an intelligent hot-fluorine-defrosting method, and is efficient and energy-saving; and the gas return amountof the compressor is increased, so that the refrigeration energy efficiency of the compressor is increased by 20%.

Description

technical field [0001] The invention relates to the field of cold storage equipment, in particular to a thermal fluorine defrosting type air jet enthalpy increasing refrigeration and hot water dual supply unit system for cold storage. Background technique [0002] In the existing cold storage refrigeration system, during the defrosting process of the cold storage, there will be temperature fluctuations, and returning to the previous temperature will generate a lot of energy consumption and cause huge operating costs. [0003] For small and medium-sized cold storage refrigeration systems and food refrigeration and processing in central kitchens, all-weather refrigeration is required, even in hot summer outdoor high-temperature environments. The increase in temperature wastes heat and damages the surrounding environment of the cold storage. [0004] In order to solve the above problems, we have made a series of improvements. Contents of the invention [0005] The object of...

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Problems solved by technology

[0002] The existing cold storage refrigeration system, during the defrosting process of the cold storage, will produce temperature fluctuations, returning to the previous temperature, will generate a lot of energy consumption, resulting in huge operating costs

[0003] For small and medium-sized cold storage refrigeration systems and food refrigeration and processing in central kitchens, all-weather refrigeration is required, even in hot summer outdoor high-temperature environments. The increase in temperature wastes heat and damages the surrounding environment of the cold storage

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