Spraying device, especially handheld spraying device, preferably for fire fighting

The manual spray device addresses the limitations of existing firefighting spray devices by integrating a mixing chamber and air conveyor within its compact housing, utilizing ambient air for foam formation without external compressors, achieving effective and safe fluid spreading.

EP4523762A1Inactive Publication Date: 2025-03-19FRIEDRICHS INGO MAXIMILIAN HENRI
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Patent Information

Application Number
EP2023197714
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-09-15
Publication Date
2025-03-19
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Existing manual spray devices for firefighting are limited in their ability to effectively and safely spread a fluid, particularly in compact and mobile forms, and often require cumbersome external air compressors for efficient operation.

Method used

A manual spray device with a compact, tube-shaped or lance-shaped housing that integrates a mixing chamber and an air conveyor device within the housing, utilizing ambient air for foam formation without the need for an external compressor, and featuring a radial fan or compressor for efficient air production.

Benefits of technology

The device enables effective and safe spreading of fluids, such as firefighting foam, in a compact and mobile form, eliminating the need for external air compressors and allowing for efficient foam formation using ambient air.

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Abstract

The invention relates to a spraying device (1), in particular a handheld spraying device, preferably for fire fighting, with a housing (2), preferably tubular and / or lance-shaped, which has a housing interior (3), and with a fluid connection (4) to which a fluid (5), preferably a fluid (5) containing at least one foaming agent, can be supplied by means of a fluid supply device (11), wherein the spraying device (1) forms at least one fluid flow (6, 7) which flows in the direction of at least one fluid outlet (12) of the spraying device (1).According to the invention, at least one fluid stream (6, 7) flows into a mixing chamber (8) formed in the interior of the housing (3), wherein an air conveying device (21) is integrated into the housing (2) upstream of the mixing chamber (8), by means of which air (43) from the environment can be conveyed into the mixing chamber (8), in which the air, preferably as at least one air stream (23), and the at least one fluid stream (6, 7) meet, preferably with mixing and / or foam formation, and together, preferably as a foam stream (27), flow in the direction of the at least one fluid outlet (12).
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