Vehicle air conditioning device

By integrating the solenoid valve with the heat exchanger and utilizing the internal flow path of the base, the problem of space occupation caused by the connection between the solenoid valve and the heat exchanger is solved, thereby achieving miniaturization and component reduction of the air conditioning unit, reducing the risk of leakage, and improving assemblability and serviceability.

CN122126053APending Publication Date: 2026-06-02TOYOTA JIDOSHA KK
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TOYOTA JIDOSHA KK
Filing Date
2025-10-24
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

In existing vehicle air conditioning systems, the connection between the solenoid valve and the heat exchanger requires a lot of space, resulting in a large device size, many components, complex connections, and the risk of leakage.

Method used

The solenoid valve and heat exchanger are integrated into one unit. They are connected through the internal flow path of the base, eliminating the need for pipes and connectors. The flow path opening is controlled by a rod, thus achieving the integration of the solenoid valve and heat exchanger.

Benefits of technology

It reduces the vehicle interior space required for air conditioning units, decreases the number of components and connection complexity, reduces the risk of refrigerant leakage, improves assemblability and serviceability, and promotes the miniaturization of refrigerant cycles.

✦ Generated by Eureka AI based on patent content.

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    Figure CN122126053A_ABST
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Abstract

This application provides an air conditioning unit for a vehicle. The vehicle air conditioning unit includes: a refrigeration cycle having a solenoid valve and a heat exchanger disposed downstream of the solenoid valve in the refrigerant flow direction for refrigerant circulation; and a base on which the solenoid valve and the heat exchanger are fixed. The base includes a refrigerant inlet, a refrigerant outlet connected to the refrigerant inlet of the heat exchanger, a tunnel-shaped internal flow path connecting the refrigerant inlet and the refrigerant outlet, an opening, and a control passage connected from the opening to a portion of the internal flow path. The solenoid valve includes a rod capable of reaching a portion of the internal flow path from the opening of the base through the center of the control passage. The solenoid valve controls the opening degree of the internal flow path based on the amount by which the rod protrudes into the portion of the internal flow path.
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