Induction heater
The dual heat exchanger induction heater design addresses inefficiencies in existing induction heaters by increasing effective heat exchange area and reducing size, facilitating compact and efficient heating in domestic appliances.
WO2026126019A1PCT designated stage Publication Date: 2026-06-18DYSON TECH LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- DYSON TECH LTD
- Filing Date
- 2025-12-03
- Publication Date
- 2026-06-18
AI Technical Summary
Technical Problem
Existing induction heaters for heating airflows are inefficient and require larger sizes to achieve desired heating temperatures, making them less suitable for compact domestic appliances.
Method used
The induction heater design incorporates an inner and outer heat exchanger positioned inwardly and outwardly of the induction coil, respectively, increasing the effective heat exchange area and reducing magnetic reluctance, allowing for a more compact and efficient heating solution.
Benefits of technology
This design achieves higher heating efficiency with a smaller size, enabling easier installation in domestic appliances like hairdryers by enhancing heat transfer and reducing electromagnetic interference.
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Smart Images
Figure IB2025062378_18062026_PF_FP_ABST
Abstract
Described herein is an induction heater comprising an induction coil, an inner heat exchanger and an outer heat exchanger. The inner heat exchanger is positioned inwardly of the induction coil, and the outer heat exchanger is positioned outwardly of the induction coil. The induction heater comprises a longitudinal axis about which the induction coil is coiled, and the inner heat exchanger and the outer heat exchanger each comprise a plurality of fins that extend in radial directions relative to the longitudinal axis. One or both of the heat exchangers comprises a support that extends around the longitudinal axis, a first set of fins that extend from the support in a direction towards the induction coil, and a second set of fins that extend from the support in a direction away from the induction coil. Also described is a domestic appliance comprising the induction heater and an airflow generator. The induction heater is configured to heat at least a part of an airflow generated by the airflow generator.
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