Integrated fluid device

By integrating the coolant-refrigerant condenser and high-temperature side valve, and the coolant-refrigerant evaporator and low-temperature side valve, with separate coolant flow paths, the integrated fluid device minimizes heat loss and optimizes flow paths, improving energy efficiency and reducing device size.

WO2026116151A1PCT designated stage Publication Date: 2026-06-04DENSO CORP
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
DENSO CORP
Filing Date
2025-11-17
Publication Date
2026-06-04

AI Technical Summary

Technical Problem

Integrated fluid devices experience increased heat loss due to close proximity and overlapping flow paths of high-temperature and low-temperature coolant streams, leading to inefficient heat exchange and energy loss.

Method used

The components of the heat pump cycle and coolant circuit are arranged such that the coolant-refrigerant condenser and high-temperature side valve are integrally faced, while the coolant-refrigerant evaporator and low-temperature side valve are also integrally faced, with separate coolant flow paths for high-temperature and low-temperature streams, reducing direct heat exchange and optimizing flow path configurations.

Benefits of technology

This arrangement significantly reduces heat loss by minimizing direct heat exchange between high-temperature and low-temperature coolant streams, simplifies coolant flow paths, and reduces pressure loss, thereby enhancing energy efficiency and device size.

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Abstract

In this integrated fluid device, at least some of the components of a heat pump cycle (2) through which a refrigerant flows and at least some of the components of a coolant circuit (3) through which a coolant flows are integratedly formed. The heat pump cycle comprises a coolant-refrigerant condenser (5) and a coolant-refrigerant evaporator (8), and the coolant circuit comprises a high-temperature-side valve (10) and a low-temperature-side valve (11). The coolant-refrigerant condenser (5) and the high-temperature-side valve (10) are integratedly arranged opposite each other, and the coolant-refrigerant evaporator (8) and the low-temperature-side valve (11) are integratedly arranged opposite each other.
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