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Cold-carrying circulation heat recovery high-temperature drying device and control method

A high-temperature drying and heat recovery technology, applied in heat recovery systems, drying, dryers, etc., can solve the problems of difficult-to-dry materials, prolong equipment operation time, exceed drying time limit, etc., and achieve accurate control of drying Drying temperature, improve drying production efficiency, and enhance drying effect

Active Publication Date: 2021-11-09
GUANGDONG SHENLING ENVIRONMENT SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When encountering materials that are difficult to dry, since the existing drying heat pump device only has the function of hot air drying, the operating time of the equipment can only be continuously extended until the drying target is completed
The existing drying heat pump device has no heat recovery function and cannot effectively recover a large amount of heat in the return air. The extension of the operating time will inevitably lead to more energy consumption and energy waste; in addition, the extension of the operating time will also seriously affect the drying efficiency. Dry production efficiency, exceeding the drying time limit
The existing drying heat pump device takes a long time to process difficult-to-dry materials, has low efficiency and high energy consumption, which has become one of the urgent problems to be solved in the field of air conditioning systems

Method used

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  • Cold-carrying circulation heat recovery high-temperature drying device and control method

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Embodiment 1

[0065] The present embodiment provides a high temperature heat recovery circulating brine drying apparatus, figure 1 Schematic diagram of apparatus of the invention, as shown, comprising: an air processing module, pump module and a heat recovery module; the air processing module comprises: a first air duct and the heat exchanger 14 along the direction of the air out of the air duct disposed sequentially , evaporator 15, fan 17 and the second heat exchanger 19; the air outlet communicates through the duct 11 112 return duct and the drying chamber 48 through the air inlet and the air outlet duct 48 communicating the drying chamber, the air duct ; the heat pump module 15 is connected with the evaporator, also connected to the circulation circuit is formed in the drying chamber provided at both ends of the inner heating coil 48, for transporting heat to the heating coil; the air processing module is configured to air in the drying chamber 48 for heat recovery, heating and dehumidifica...

Embodiment 2

[0078]This embodiment provides a control method for use in the above-described drilling device, including:

[0079] The controller 31 acquires the measured value P of the first sensor 45. 1 ;

[0080] The controller 31 is based on P 1 Adjust the working state of the electric valve 42;

[0081] The controller 31 is based on P 1 Adjusting the working state of the driver valve 42 includes:

[0082] Be 1 ≥P 11 When the controller 31 controls the motor valve 42 to close, otherwise the controller 31 controls the motor valve 42 to open;

[0083] Said P 11 Set the set value for the pressure protection.

[0084] Further, the heat pump module includes: a refrigerant pipe, a compressor 21, a third heat exchanger 25, and an expansion valve 27, a compressor 21, a third heat exchanger 25, an expansion valve 27, and the evaporator 15 through a refrigerant pipe. Connecting a second circuit in sections; the third heat exchanger 25 is connected to both ends of the heating coil; the air processing m...

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Abstract

The invention relates to the field of heat pump drying, in particular to a cold-carrying circulation heat recovery high-temperature drying device and a control method. According to the cold-carrying circulation heat recovery high-temperature drying device and the control method, on the basis of hot air drying, heat source drying is added, on one hand, the drying effect is enhanced, the drying production efficiency is improved, on the other hand, an air treatment module can recover heat dissipated by a heat source in air in a drying chamber, so that a large amount of unnecessary energy consumption is reduced, and the environment-friendly and energy-saving effects are achieved; in addition, a first heat exchanger of the air treatment module further recovers heat of air in an air pipeline, a heat recovery module transports the recovered heat to a second heat exchanger through a cold carrying pipeline and a secondary refrigerant in the cold carrying pipeline, and the second heat exchanger heats the air through the recovered heat; and therefore, on the basis that the air treatment module recovers heat source heat of a heat pump module, the energy utilization rate is further increased.

Description

Technical field [0001] The present invention relates to the field of heat pump drying, and more particularly to a kind of cooling-cooling heat recovery high temperature drying device and a control method. Background technique [0002] The heat pump drying technology has the advantages of less energy consumption, low environmental pollution, high drying quality, and wide application range. Its excellent energy-saving effect has been proved by various experimental research at home and abroad. The heat of heating air in the heat pump dryer is mainly from the heat-humidity and latent heat contained in the cooling chamber, which requires only the power of the heat pump compressor, which has a small amount compared to the ordinary drying device. The power can make a lot of heat. [0003] The heat pump is essentially a heat lifting device, and the high temperature heat pump drying unit utilizes the principle of reverse Carno, draws heat from the surrounding environment, transmitting it ...

Claims

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Application Information

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IPC IPC(8): F26B21/00F26B21/06F26B21/12F25B30/02F25B31/00F25B41/20F25B41/24F25B41/30F25B49/02
CPCF26B21/002F26B21/001F26B21/003F26B21/06F25B30/02F25B31/006F25B41/24F25B41/30F25B41/20F26B21/12F25B49/02Y02B30/52Y02P70/10
Inventor 林创辉张学伟周伟强陆家文覃家海
Owner GUANGDONG SHENLING ENVIRONMENT SYST CO LTD
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