Continuous drying apparatus for bee pollen and related drying method

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Solution Overview

Problem

Current drying methods for bee pollen are inefficient, leading to high energy consumption, poor quality due to lipid oxidation, color change, and uneven drying, and lack automation and heat energy recycling, resulting in increased production costs and reduced shelf life.

Innovation Solution

A continuous drying apparatus utilizing a heat pump dehumidification heating structure, belt-type conveying, and staged heating to achieve efficient, closed-loop drying with inert gas preservation, reducing oxidative degradation and improving drying rate and product quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional drying methods (sun hot air drying, ventilation drying, electrothermal drying) are used for bee pollen, then the drying process can be completed, but the nutritional ingredients and active substances are easily oxidized and deteriorated, causing poor quality of dried bee pollen

Engineering Contradiction:
Improvequality of dried bee pollenVSAvoidoxidation and deterioration during drying
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies inert atmosphere drying by replacing oxygen-containing air with inert gas (nitrogen or carbon dioxide) in the drying chamber. This prevents oxidative degradation of bee pollen's nutritional ingredients and active substances during the drying process, thereby maintaining high product quality while achieving effective drying.

Inventive Principle:
Principle #39Inert atmosphere (Inert environment)

2Loss of energy

If traditional drying methods are used for bee pollen, then drying can be achieved, but energy consumption is high due to lack of heat energy recycling

Engineering Contradiction:
Improveenergy consumption for dryingVSAvoiddrying efficiency
Core Design Contradiction:
Loss of energyVSProductivity

Solution Approach 1:

The patent implements heat energy recycling by capturing the heat from exhaust gases and reusing it in the drying process. The inert gas that has passed through the bee pollen is reheated and recirculated back into the drying chamber, reducing the need for continuous external heating and significantly lowering energy consumption while maintaining drying efficiency.

Inventive Principle:
Principle #34Discarding and recovering

3Manufacturing precision

If traditional drying methods are used for bee pollen, then drying can be completed, but the drying is uneven and causes color change and lipid oxidation

Engineering Contradiction:
Improveuniformity of dryingVSAvoiduneven drying, color change, lipid oxidation
Core Design Contradiction:
Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

By creating an inert atmosphere throughout the drying chamber, the patent prevents lipid oxidation and color change that occur in traditional air drying. The uniform distribution of inert gas ensures consistent drying conditions across all bee pollen samples, eliminating uneven drying and associated quality defects.

Inventive Principle:
Principle #39Inert atmosphere (Inert environment)

4Extent of automation

If manual drying operation is used for bee pollen, then the process can be performed, but automation is difficult to implement and production cost is increased

Engineering Contradiction:
Improveautomation of drying operationVSAvoidcomplexity of drying system
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The patent implements continuous drying operation where inert gas continuously circulates through the bee pollen material, enabling automated processing without manual intervention. The system maintains continuous flow and heating, transforming traditional batch manual drying into an automated continuous process that increases productivity while controlling system complexity through standardized equipment design.

Inventive Principle:
Principle #20Continuity of useful action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The apparatus significantly enhances energy utilization, accelerates drying, and maintains the quality of bee pollen by reducing humidity and oxidative degradation, resulting in improved product quality and reduced production costs.

Implementation Method 1

the evaporator, a fan and a condenser which are sequentially connected, wherein the gas inlet of the evaporator is connected with the lower chamber

Methodology Applied
Scientific EffectEvaporation: Evaporation

Implementation Method 2

the gas outlet of the condenser is connected with the upper chamber

Methodology Applied
Scientific EffectCondensation: Condensation

Implementation Method 3

a fan for forcing air circulation

Methodology Applied
Scientific EffectConvection: Convection

Implementation Method 4

a first heating plate disposed on a lower surface of the top wall of the box body and capable of performing first-stage heating to the bee pollen to be dried

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 5

a first conveyor belt which is sleeved on outer side of the first main drive roller and the first driven roller at both ends, respectively, and is capable of conveying the bee pollen to be dried

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 6

vacuumizing the inner chamber of the box body

Methodology Applied
Scientific EffectVacuum: Vacuum

Implementation Method 7

inert gas preservation, reducing oxidative degradation

Methodology Applied
Scientific EffectOxidation prevention: Oxidation

Data Source

PatentUS11248842B2Continuous drying apparatus for bee pollen and related drying method
Publication Date: 2022.02.15 BEE RES INST CHINESE ACAD OF AGRI SCI
  • US11248842B2 patent drawing
  • US11248842B2 patent drawing
  • US11248842B2 patent drawing

AI summary

The present invention relates to the technical field of bee product processing, and discloses a continuous drying apparatus for bee pollen and related drying method. The continuous drying apparatus for bee pollen comprises: a box body; a first drying conveying structure; a second drying conveying structure; and a heat pump dehumidification heating structure. The continuous drying apparatus for bee pollen has the advantage of high drying efficiency.