Direct expansion condensing heat recovery air handling unit

By designing a new filter replacement structure in the direct expansion condensing heat recovery air handling unit, including slots, slides, and handles, the problem of cumbersome filter replacement is solved, enabling rapid filter replacement and installation, reducing the pressure on equipment connection nodes, and preventing air leakage.

CN224284872UActive Publication Date: 2026-05-26HANGZHOU SONGXING ENVIRONMENTAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HANGZHOU SONGXING ENVIRONMENTAL TECH CO LTD
Filing Date
2025-06-24
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In existing direct expansion condensing heat recovery air handling equipment, the filter screen is located inside the equipment, making replacement cumbersome and inconvenient.

Method used

A structure including a first slot, a second slot, a filter frame, a slide, a handle, a gear, and a pin rack is designed. By rotating the handle, the gear rotates and engages with the pin rack, which pulls the slide and the second slot to move, facilitating the disassembly and installation of the filter frame. Aluminum alloy material is used to reduce the pressure on the connection nodes, and the cooperation of baffles, sealing strips, and support seats prevents air leakage and stress on the connection nodes.

Benefits of technology

It enables quick filter replacement and installation, reduces the pressure on equipment connection points, avoids air leakage, and is simple and convenient to operate.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224284872U_ABST
    Figure CN224284872U_ABST
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Abstract

This utility model discloses a direct expansion condensing heat recovery air handling device, belonging to the technical field of direct expansion condensing heat recovery air handling devices. The utility model includes a main body, with a first slot and a second slot fixed to the lower part of the main body. A filter frame is connected between the first and second slots. A slide is connected to the outer surface of the second slot, and a handle passes through the outer surface of the slide. A gear is sleeved on the outside of the handle. Through the arrangement of the first slot, second slot, filter frame, slide, handle, gear, and pin rack, when removing the filter, rotating the handle causes the gear to rotate. After the gear rotates, it meshes with the rack on the pin rack, causing the pin rack to retract into the slide and reach its limit position. At this time, the handle can be pulled outward to move the slide and the second slot outward, after which the three filter frames and the filter screens inside the three filter frames can be removed. The structure is simple and easy to operate, facilitating quick replacement of the three filter screens.
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