Air conditioning and water heating system, method for controlling air conditioning and water heating system, and control device
The system addresses refrigerant leaks by shutting off refrigerant flow to the affected unit and rerouting it to maintain hot water supply, ensuring continuous operation.
EP4764363A1Pending Publication Date: 2026-06-24DAIKIN INDUSTRIES LTD
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- DAIKIN INDUSTRIES LTD
- Filing Date
- 2024-08-21
- Publication Date
- 2026-06-24
AI Technical Summary
Technical Problem
Existing hot water supply air-conditioning systems face challenges in maintaining the hot water supply function when refrigerant leaks in an indoor unit.
Method used
A hot water supply air-conditioning system with a shutoff unit to stop refrigerant flow into the affected indoor unit while continuing operation of the compressor to supply refrigerant to the hot water supply unit, using a cascade heat medium circuit to maintain hot water production.
Benefits of technology
Ensures continuous hot water supply even when refrigerant leaks, by isolating the affected unit and rerouting refrigerant flow to maintain system functionality.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure IMGAF001_ABST
Abstract
A hot water supply air-conditioning system includes an outdoor unit that includes a compressor configured to compress a first heat medium, and is configured to supply the first heat medium; a hot water supply unit configured to generate hot water using the first heat medium supplied from the outdoor unit; an indoor unit configured to perform air conditioning using the first heat medium supplied from the outdoor unit; a shutoff unit configured to shut off the first heat medium flowing into the indoor unit; and a controller configured to, in a case in which the first heat medium leaks in the indoor unit, perform control to shut off the first heat medium flowing into the indoor unit using the shutoff unit, and continue operation of the compressor to continue supply of the first heat medium from the outdoor unit to the hot water supply unit.
Need to check novelty before this filing date? Find Prior Art
Citation Information
Patent Citations
Liquid-sealed type vibro-isolating bush
JP1989003339A
Air conditioning and hot water supply system
JP2019529857A
Sales processing device, sales processing system, and sales processing program
JP2023170939A
JP2012A