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A multi-stage bypass and multi-stage dehumidification heat pump drying system

A technology of heat pump system and drying system, which is applied in the direction of heat pump, drying gas arrangement, drying, etc., which can solve the problems of high energy consumption of the system and large energy consumption of equipment, and achieve the effect of ensuring drying quality, reasonable treatment, and improving performance

Active Publication Date: 2021-04-27
NORTHEAST DIANLI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its equipment consumes a lot of energy, requiring multiple compressors to run in series, and the system consumes a lot of energy

Method used

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  • A multi-stage bypass and multi-stage dehumidification heat pump drying system
  • A multi-stage bypass and multi-stage dehumidification heat pump drying system
  • A multi-stage bypass and multi-stage dehumidification heat pump drying system

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] The purpose of the present invention is to provide a multi-stage bypass and multi-stage dehumidification heat pump drying system to solve the above-mentioned problems in the prior art, improve the heating efficiency of the heat pump and the quality stability of the dried product, and can meet the requirements of the continuous drying process. Increased production capacity.

[0028] In order to make the above objects, features and advantages of the prese...

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Abstract

The invention discloses a multi-stage bypass and multi-stage dehumidification heat pump drying system, which relates to the technical field of heat pump drying and includes a multi-stage heat pump subsystem and an air circulation subsystem; the multi-stage heat pump subsystem includes a CO 2 Heat pump system, R134a heat pump system, R410a heat pump system and heat pipe heat pump system. The multi-stage bypass and multi-stage dehumidification heat pump drying system provided by the present invention realizes the closed circulation of dry air by adjusting the air regulating valve on the air duct or discharges the drying waste gas and introduces fresh air to form a semi-open system, and also realizes condensation The air in the front and back of the dryer is bypassed to adjust the temperature, humidity and air volume in the drying box; the multi-stage heat pumps are connected in parallel, which reduces the compression ratio of the single-stage heat pump unit and improves the heating efficiency of the heat pump. The quality stability of the dried product is improved, the requirements of the continuous drying process can be met, and the production capacity is improved.

Description

technical field [0001] The invention relates to the technical field of heat pump drying, in particular to a multi-stage bypass and multi-stage dehumidification heat pump drying system. Background technique [0002] As a high-energy-consuming process, drying has accounted for more than 12% of the total industrial energy consumption. In recent years, the price of energy has increased, and the energy saving effect of traditional drying equipment is not significant, and the energy consumption of drying has increased year by year. It is urgent to develop high-efficiency and energy-saving equipment structures and processes. The heat pump can recover the energy of the waste heat of the waste gas in the drying process, recycle it and reuse it repeatedly, which can reduce the energy consumption in the drying process. And the drying operation is no longer limited by the ambient temperature and humidity, and the quality of the dried product is better maintained, and the yield and qual...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B30/02F25B30/06F25B41/31F26B21/00F26B21/02F26B21/08F26B21/10F25B41/34
CPCF26B21/08F26B21/10F25B30/06F25B30/02F26B21/003F26B21/001F26B21/02F25B41/31Y02B30/70
Inventor 刘忠彦王宝瑞金旭洪文鹏章罕伶唐炜志
Owner NORTHEAST DIANLI UNIVERSITY
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