Heat exchanger unit, air conditioning indoor unit, and refrigeration cycle device

By connecting refrigerant pipes and valves closer to the heat exchanger body, the heat exchanger unit's size in the axial direction is reduced, addressing space inefficiencies and enabling compact design.

EP4764384A1Pending Publication Date: 2026-06-24DAIKIN INDUSTRIES LTD
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
DAIKIN INDUSTRIES LTD
Filing Date
2024-08-22
Publication Date
2026-06-24

AI Technical Summary

Technical Problem

Existing heat exchanger units require a larger space for refrigerant pipes due to their connection on the side opposite to the heat exchanger body, leading to an increased size in the axial direction.

Method used

The refrigerant pipes are connected to the heat exchanger unit on the surface closer to the heat exchanger body or the peripheral surface of the plate structure, reducing the need for additional space on the opposite side, and the valves and pipes are also positioned closer to the heat exchanger body to minimize space expansion.

Benefits of technology

This configuration allows for a reduction in the overall size of the heat exchanger unit in the axial direction, optimizing space utilization and facilitating the placement of other components without increasing the unit's dimensions.

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Abstract

A plate structure (50, 60) has: a first surface (52a, 62a) which is a surface closer to a heat exchanger body (B) in a first direction; a second surface (52b, 62b) which is a surface on a side opposite to the first surface (52a, 62a) in the first direction; and a third surface (52c, 62c) which is a peripheral surface extending from the first surface (52a, 62a) to the second surface (52b, 62b). The first surface (52a, 62a) is provided with a heat-transfer-tube-side connection portion (53, 63) to which a heat transfer tube (42) is connected. The first surface (52a, 62a) or the third surface (52c, 62c) is provided with a pipe-side connection portion (54, 55, 64, 65) to which a refrigerant pipe (71, 72, 73) is connected.
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