Spray arm for a dishwasher and dishwasher

By setting inclined guide surfaces and guide ribs on the bottom wall of the spray arm channel, the problems of residual water breeding bacteria and cavity dampness are solved, achieving no residual water in the spray arm cavity and efficient cleaning.

CN224344880UActive Publication Date: 2026-06-12NINGBO FOTILE KITCHEN WARE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO FOTILE KITCHEN WARE CO LTD
Filing Date
2025-05-26
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

The existing spray arm design prevents residual water from drying, which can easily breed bacteria and cause the dishwasher cavity to become damp, affecting the cleaning effect.

⚗Method used

An inclined guide surface and guide ribs are set on the bottom wall of the flow channel of the spray arm. The guide surface guides the accumulated water to the water inlet for discharge, and the guide ribs assist in guiding the accumulated water, so as to achieve no residual water in the inner cavity of the spray arm and reduce the energy loss of water flow during washing.

🎯Benefits of technology

This achieves zero residual water in the spray arm cavity, preventing bacterial growth and moisture buildup in the cavity, maintaining high cleanliness, and improving cleaning effectiveness.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to a spray arm for a cleaning machine and the cleaning machine itself, comprising a body extending along its length, the body forming a hollow flow channel, and an inlet communicating with the flow channel being opened in the middle of the bottom wall of the body. The bottom wall of the flow channel forms a guide surface that gradually decreases from the end to the inlet, and guide ribs are provided on the guide surface. This utility model provides an inclined guide surface structure on the bottom wall of the flow channel of the spray arm. After washing, the guide surface guides the water at both ends of the flow channel and the water accumulated in the flow channel to the inlet for downward drainage. Simultaneously, guide ribs are also provided on the guide surface, which further assist in guiding the accumulated water, improving the guiding effect and facilitating the achievement of no residual water in the inner cavity of the spray arm in conjunction with the guide surface, preventing bacterial growth and cavity dampness, and maintaining high cleaning efficiency. During washing, the guide ribs can also guide and tidy the water flow to reduce water energy loss, thereby improving the cleaning effect.
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