Method for controlling a refrigerant circuit intended for the thermoregulation of a passenger compartment, in particular a motor vehicle

FR3158262A1Pending Publication Date: 2025-07-18VALEO SYST THERMIQUES SAS
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Patent Information

Application Number
FR2024000410
Authority / Receiving Office
FR · FR
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-01-16
Publication Date
2025-07-18

AI Technical Summary

Technical Problem

Existing refrigerant circuits for passenger compartment thermoregulation face challenges in efficiently dehumidifying the air while using air recirculation, which can lead to risks during demisting and defrosting, particularly when the air is too humid.

Method used

A method for controlling a refrigerant circuit with parallel branches for heat exchange, allowing alternating operation modes (simple and parallel dehumidification) and air recirculation strategies, determining the optimal mode based on conditions like temperature and flow rates to enhance energy efficiency and dehumidification effectiveness.

Benefits of technology

The method enables efficient dehumidification across a wide range of conditions, optimizing energy use by switching between dehumidification modes and recirculation strategies, ensuring effective demisting and defrosting without excessive energy consumption.

✦ Generated by Eureka AI based on patent content.

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Abstract

Method for controlling thermoregulation of a passenger compartment, in particular of a motor vehicle, using a thermoregulation system, said system comprising a refrigerant circuit, said circuit being configured to perform a thermodynamic cycle, said circuit comprising a first branch and a second branch, extending in parallel, said first branch being intended for heat exchange with a first heat transfer fluid, said second branch being intended for heat exchange with a second heat transfer fluid, said circuit being configured to alternately supply said first branch only, according to a first operating mode, called simple dehumidification (100), allowing dehumidification of the passenger compartment by means of the first heat transfer fluid, and said first and second branches simultaneously, according to a second operating mode, called parallel dehumidification (102),enabling the passenger compartment to be dehumidified by means of the first heat transfer fluid and for taking calories from the second heat transfer fluid, said system being configured for supplying a thermoregulation fluid to the passenger compartment using a mixture of an outside air flow and an air flow coming from the passenger compartment, according to a supply mode, called with recirculation, said method comprising a step of determining an operating mode from among the simple and parallel dehumidification modes (100, 102) so that the determined operating mode occurs, under certain conditions, at least in supply mode with recirculation. Figure for the abstract: Figure 3,
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Citation Information

Patent Citations

  • Air conditioner for vehicle

    US20130199217A1

  • Method for controlling an air-conditioning and / or heating system

    WO2023006768A1

  • Dehumidification mode control method and apparatus, device, medium, and program product

    WO2023070606A1