Fire grate and gas water heater

By setting up suction holes and deflectors in the fire discharge of the gas water heater, a spiral air flow is formed, which solves the problem of uneven mixing between gas and air, improves the adequacy of gas combustion and the stability of flame, and achieves low nitrogen emissions.

CN222688176UActive Publication Date: 2025-03-28CHONGQING HAIER WATER HEATER +2
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Patent Information

Application Number
CN202420367050.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-02-27
Publication Date
2025-03-28
Estimated Expiration
2034-02-27

AI Technical Summary

Technical Problem

In existing gas water heaters, the gas and primary air are unevenly mixed, resulting in insufficient combustion of gas.

Method used

A fire tray is designed, with a lead-in section, a mixing section and a diffusing section at the bottom, an air outlet chamber is provided at the top, and a suction hole and a deflector are provided on the mixing section or diffusing section. The deflector is used to guide the gas expelled from the ignition into the mixing section or diffusing section to form a spiral air flow to improve the mixing uniformity between the gas and the air.

Benefits of technology

By improving the mixing uniformity between gas and air, the combustion sufficiency of gas is enhanced, the stability of flame and heat distribution uniformity are improved, the nitrogen oxide content is reduced, and the nitrogen emissions are achieved.

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Abstract

The utility model discloses a fire grate and a gas water heater. The bottom of the fire grate is provided with an injection section, a mixing section and a diffusion section, the top of the fire grate is provided with a gas outlet cavity, the injection section is communicated with the gas outlet cavity through the mixing section and the diffusion section, the fire grate is further provided with a gas suction hole, and the gas suction hole is communicated with the mixing section and is arranged close to the injection section. A flow guide plate is also arranged on the inner wall of the mixing section and is arranged on one side of the air suction hole; and the guide plate is configured to guide gas outside the fire row to be sucked into the mixing section from the suction hole. The mixing uniformity of gas and air in a fire grate of the combustor is improved, so that the combustion sufficiency of the gas is improved.
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