Beehive Mite Control Device Using Humidified Hot Air

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Solution Overview

Problem

Current methods for controlling mites harmful to bees, such as Varroa and Tropilaelaps, are ineffective, particularly in treating mites within brood cells, as they often damage the bee brood, are costly, and require specialized equipment that is cumbersome to transport and use, especially during peak infestation periods before honey harvest.

Innovation Solution

A device that supplies a controlled stream of warm, humidified air to brood cells, with temperature and humidity regulation, allowing for targeted heating of brood cells to 39-42°C to kill mites while minimizing damage to the bee brood, using a heat source, air duct, and temperature control system, including a humidifying device and precise temperature measurement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If chemical methods are used to control mites, then mite population is reduced, but harmful residues accumulate in honey, wax or pollen and the bee colony is weakened

Engineering Contradiction:
Improvemite control effectivenessVSAvoidharmful residues in honey
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The invention changes the physical parameter of temperature to control mites. By heating the brood chamber to 42-45°C, mites are killed while bees remain unaffected due to their heat resistance. This physical method eliminates chemical residues while maintaining effective mite control.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If a heating cabinet is used to treat mites, then mites are effectively controlled, but the device is expensive and cannot be transported over long distances

Engineering Contradiction:
Improvemite control effectivenessVSAvoiddevice portability
Core Design Contradiction:
ReliabilityVSWeight of moving object

Solution Approach 1:

The invention divides the heating system into separate, portable components: a heating element that can be placed directly in the brood chamber and a power source. This segmentation allows the treatment device to be easily transported between hives while maintaining effective heating capability for mite control.

Inventive Principle:
Principle #1Segmentation

3Reliability

If the brood chamber is heated to kill mites, then mite reproduction is disrupted, but the bee brood may be damaged

Engineering Contradiction:
Improvemite reproduction disruptionVSAvoiddamage to bee brood
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The invention applies heat locally to the brood chamber where mites are present, rather than heating the entire hive. The targeted heating to 42-45°C affects mites while bees and brood remain unaffected due to their physiological heat resistance, achieving selective mite control without brood damage.

Inventive Principle:
Principle #3Local quality

4Object-affected harmful factors

If treatment is delayed until after honey harvest, then chemical methods can be used safely, but the bee colony is weakened during autumn/winter

Engineering Contradiction:
Improvechemical residue safetyVSAvoidcolony health during autumn/winter
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The invention enables preliminary mite treatment before honey harvest by using heat, which leaves no residues. This allows beekeepers to control mite populations early in the season, preventing colony weakening during autumn and winter while still allowing honey production later.

Inventive Principle:
Principle #10Preliminary 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

Effectively kills mites in brood cells without harming the bee brood, allowing for easy transportation and use, as the device is lightweight and inexpensive, with a high success rate in interrupting the mite reproductive cycle and removing dead mites from the hive.

Implementation Method 1

a heat source and an air duct for generating the stream of warm air

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 2

a temperature control device for regulating the air temperature of the stream of warm air

Methodology Applied
Scientific EffectTemperature control: Heat Exchanger

Data Source

PatentEP2250880B1Device for controlling mites which are harmful to bees
Publication Date: 2013.10.09 ECODESIGN ENG & MANAGEMENT CONSULTANCY
  • EP2250880B1 patent drawingFigure 1A~1B
  • EP2250880B1 patent drawingFigure 2
  • EP2250880B1 patent drawingFigure 3~5(c)

AI summary

The method involves removing a brood comb with brood cells from a beehive. The brood comb with brood cells is separated from bees. The separated brood comb is heated with adjustable hot air stream such that the hot air stream is moisturized, where the relative humidity of the hot air stream amounts to 70 percentages so that the brood cells are heated till reaching the temperature of 39 to 42 degree centigrade. The temperature of the brood cells is maintained for 45 minutes. Temperature measurement devices (111, 112) are inserted into the brood comb. An independent claim is also included for a device for controlling mites in a beehive before harvesting honey.