Vehicle air conditioning system

The vehicle air conditioning system dynamically adjusts airflow ratios through and around the total heat exchanger based on temperature and humidity conditions, addressing inefficiencies in conventional systems to enhance comfort and energy efficiency.

JP2026089374APending Publication Date: 2026-06-01SANDEN CORP
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Patent Information

Application Number
JP2024202417
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-11-20
Publication Date
2026-06-01

AI Technical Summary

Technical Problem

Conventional vehicle air conditioning systems lack the ability to adjust the airflow ratio of outside air passing through and not passing through the total heat exchanger, leading to energy inefficiency, increased load on the temperature control unit, and limited passenger comfort due to window fogging and airflow resistance.

Method used

A vehicle air conditioning system with an intake unit, including an outside air inlet, inside air inlet, and a blower unit, featuring a total heat exchanger and a flow rate adjustment mechanism to control the airflow ratio between passages through and bypassing the total heat exchanger, allowing for dynamic adjustment based on temperature and humidity conditions.

Benefits of technology

Enhances passenger comfort by preventing window fogging, reduces energy consumption, and minimizes device size while maintaining efficient airflow, thus improving convenience and energy savings.

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Abstract

To provide a vehicle air conditioning system that improves convenience and comfort for occupants, while also achieving energy savings and miniaturization of the device. [Solution] A vehicle air conditioning system 1 comprises an intake unit 2 having an outside air inlet 3, an inside air inlet 4, an inside / outside air switching damper 5, a blower 6, and a total heat exchanger 7 provided between the outside air inlet 3 and the blower 6, which exchanges heat between outside air and return air, which is inside air discharged from the inside of the vehicle to the outside of the vehicle; and a temperature control unit 20 that adjusts the temperature of the air supplied from the intake unit 2. The intake unit 2 has a first outside air passage 12 through which outside air introduced from the outside air inlet 3 flows into the total heat exchanger 7, a second outside air passage 13 through which outside air introduced from the outside air inlet 3 bypasses the total heat exchanger 7 and flows into the temperature control unit 20, and an outside air flow rate adjustment unit 10 that adjusts the ratio of airflow between the first outside air passage and the second outside air passage.
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