Vacuum heat pump drying device

Abstract

The invention relates to a vacuum heat pump drying device, comprising a drying box body, wherein the left end and the right end of the drying box body are respectively provided with a left end cover and a right end cover as well as a left sealing strip and a right sealing strip, the box body is internally provided with a condenser coil pipe and an evaporator coil pipe lifting frame, the evaporator coil pipe lifting frame is provided with an evaporator coil pipe and a water receiving tray; the box body is externally provided with a compressor and a throttle, the inlet and the outlet of the compressor are respectively communicated with the outlet of the evaporator coil pipe and the inlet of the condenser coil pipe as well as the inlet and the outlet of the throttle are respectively communicated with the outlet of the condenser coil pipe and the inlet of the evaporator coil pipe; and a condenser coil pipe bracket is arranged on the inner side wall of the box body. The vacuum heat pump drying device is characterized in that a water ejector is arranged, the throat part of the water ejector is communicated with the box body by virtue of a check valve and a pipeline, the inlet of the water ejector is connected with the outlet of a high pressure water pump by virtue of a high pressure water pipeline, the inlet of the high pressure water pump is communicated with the lower part of a water tank by virtue of a water pipe, the lower part of the water tank is provided with a water escape valve, and the exterior below the drying box body is provided with a blowoff valve and an air intake valve. The vacuum heat pump drying device provided by the invention can be widely applied to industries requiring low temperature drying such as food industry, pharmaceutical industry, chemical industry and building material industry.

Description

technical field [0001] The invention relates to a drying device, in particular to a vacuum heat pump drying device. Background technique [0002] Drying is an operation with high energy consumption. How to improve energy efficiency, reduce costs, improve product quality and protect the environment is one of the focuses of professional scientists at home and abroad. At present, most of the drying devices used at home and abroad use electric heating, steam or hot air heating, which has high temperature and high energy consumption. There are also people who use heat pumps for drying, but heat pump drying can not inhibit the growth of bacteria and microorganisms under medium and low temperature conditions, which affects product quality. There are also people who use a vacuum freeze dryer. Its biggest disadvantage is high energy consumption and high cost. Contents of the invention [0003] The purpose of the present invention is to provide a vacuum heat pump drying device, wh...

AI Technical Summary

Problems solved by technology

At present, most of the drying devices used at home and abroad use electric heating, steam or hot air heating, which has high temperature and high energy consumption.

Some people also use heat pumps for drying, but heat pump drying under medium and

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