Superhigh-temperature heat pump drying system

A drying system and warming technology, applied in drying, dryer, drying of solid materials, etc., can solve problems such as difficulty in promotion, and achieve the effect of high air supply temperature and fully improved evaporation temperature.

Inactive Publication Date: 2015-11-04
HEFEI TAONENG ENVIRONMENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing heat pump drying equipment in the market can only provide air supply at a maximum of 80°C, so it can only work in medium and low temperature

Method used

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  • Superhigh-temperature heat pump drying system
  • Superhigh-temperature heat pump drying system
  • Superhigh-temperature heat pump drying system

Examples

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Embodiment Construction

[0017] refer to figure 1 The shown a kind of ultra-high temperature heat pump drying system comprises a drying room 16, a return air channel 12a connected with the air supply port 16b and the return air port 16a of the drying room 16, the circulation fan 9 arranged in the return air channel 12a, and the return air channel 12a. The exhaust duct 12b connected to the air duct 12a, the exhaust fan 8 arranged at the passage opening of the exhaust duct 12b, the air heat recovery device 16 arranged at the intersection of the return air duct 12a and the exhaust duct 12b, and two sets of parallel use heat pump unit.

[0018] Each heat pump unit is composed of compressor 1, thermostat condenser 2, main condenser 3, expansion valve 5, evaporator 6, dry filter 4, gas-liquid separator 7 and other main refrigeration components connected in series through pipelines; Wherein, the main condenser 3 is placed in the return air passage 12a, and the evaporator 6 is placed in the exhaust air passa...

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PUM

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Abstract

The invention relates to a superhigh-temperature heat pump drying system. The superhigh-temperature heat pump drying system comprises a drying room, an air return duct, a circulating draught fan, an exhaust duct, an exhaust fan, an air heat recovering device and at least two heat pump units. The air return duct is communicated with an air supply port and an air return port of the drying room. The circulating draught fan is arranged in the air return duct. The exhaust duct is communicated with the air return duct. The exhaust fan is arranged at a duct opening of the exhaust duct. The air heat recovering device is arranged at the intersection of the air return duct and the exhaust duct. The heat pump units are used in parallel. According to the superhigh-temperature heat pump drying system, the two or more heat pump units work in parallel, and the drying room is heated by absorbing low-grade ambient air heat at the initial stage of the drying process, so that the temperature is increased; after the temperature is increased to a certain extent, high-temperature and high-humidity air exhausted out of the drying room is dehumidified, and sensible heat and latent heat contained in the high-temperature and high-humidity air are recovered to the maximum extent; due to the gradient difference of the temperature ranges of cycle working fluid of the heat pump units, relatively higher air supply temperature can be provided through the system, and meanwhile it is guaranteed that the evaporating temperature of the drying units is sufficiently increased.

Description

technical field [0001] The invention relates to a heat pump drying system, in particular to a high-efficiency heat pump drying system capable of providing ultra-high temperature air supply under normal ambient temperature. Background technique [0002] Drying has always been an indispensable basic production link for a large number of industrial and agricultural products, and it is also a large energy consumer. According to statistics, the energy used in drying operations accounts for about 12% of the total energy consumption of the national economy in China. At the same time, the pollution caused by the drying process is An important source of environmental pollution. Due to the energy crisis, many traditional drying equipment are forced to shrink, and heat pump drying equipment has been widely used as an energy-saving and environmentally friendly product. At present, the vapor compression heat pump is widely used in the industry, which relies on the circulation of the ref...

Claims

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Application Information

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IPC IPC(8): F26B21/00F26B25/00
CPCY02P70/10
Inventor 史文芬陈溪
Owner HEFEI TAONENG ENVIRONMENT TECH
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