An air source large temperature span high temperature heat pump drying system

A high-temperature heat pump and drying system technology, applied in heat recovery systems, heat pumps, drying, etc., can solve the problems of difficult realization and high cost of heat pump single-stage compression
CN109827419BActive Publication Date: 2020-10-27TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
Publication Date
2020-10-27

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Abstract

An air source large temperature span high temperature heat pump drying system, comprising: a compressor, a fan, a drying chamber, an evaporator, a condenser, a heat recovery heat exchanger, a first throttling element, a second throttling element, a first cut-off valve, second stop valve, third stop valve, fourth stop valve, fifth stop valve, sixth stop valve, seventh stop valve, eighth stop valve, first condensate trap separator, second condensate trap The separator, the first liquid discharge valve and the second liquid discharge valve, the air source large temperature span high temperature heat pump drying system provided by the present invention, utilizes the phase change temperature slip characteristic of the mixed working fluid, and introduces the regenerative heat exchanger to realize Large temperature span and high-efficiency heat supply, using conventional compressor single-stage compression to provide the heat required for high-temperature drying, high drying temperature, low dehydration temperature, high dehydration efficiency, simple process and low cost.
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Description

technical field

[0001] The invention relates to the technical field of heat pump drying, in particular to an air source large temperature span high temperature heat pump drying system. Background technique

[0002] High-temperature drying is widely used in wood production, medicinal material production, food production and other fields to ensure the quality of products by reducing the moisture content in raw materials. Controlling the temperature required for drying and ensuring the drying quality of products is the key to drying technology. High temperature drying can increase the drying rate of products and is an important technical means to improve drying efficiency.

[0003] Heat pump drying is a clean and efficient drying method that absorbs heat from the environment by consuming a small amount of electricity and converts it into high-temperature heat required for drying. However, heating air at normal temperature to the temperature required for high-temperature drying...

Claims

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