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Noise reduction device and gas water heater

A technology of noise reduction and inner peripheral wall, which is applied in the field of noise reduction and noise reduction, and can solve problems such as poor noise reduction effect.

Pending Publication Date: 2020-09-04
QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem of poor noise reduction effect of existing gas water heaters, the present invention proposes a noise reduction device that can solve the above problems

Method used

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  • Noise reduction device and gas water heater
  • Noise reduction device and gas water heater
  • Noise reduction device and gas water heater

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Effect test

Embodiment 1

[0026] Embodiment 1, this embodiment proposes a noise reduction device, such as figure 1 , figure 2 As shown, it includes a barrel-shaped body with an open end connected by a peripheral wall 11 and a bottom wall 12. The peripheral wall 11 includes an inner peripheral wall 111 and an outer peripheral wall 112. There is a gap between the walls 112. One end of the inner peripheral wall 111 and the outer peripheral wall 112 is sealed with the bottom wall 12, and the other end is connected by the connecting panel 13. The bottom wall 12, the inner peripheral wall 111, the outer peripheral wall 112 and the connecting panel 13 are enclosed by A closed cavity, the cavity is partitioned by the first partition 14 to form a number of muffler cavities 15, and at least one second partition 16 is arranged in the muffler cavity 15, and the muffler cavity 15 is partitioned by the second partition 16 to form several layers of sub-mufflers The cavity 151 and the sub-muffler cavity 151 are inde...

Embodiment 2

[0040] Embodiment 2, this embodiment proposes a gas water heater, such as Figure 4-Figure 7 As shown, it includes a casing 21 and a fan 22 arranged in the casing 21. The casing 21 is provided with an air inlet 23 opposite to the inlet of the fan 22, and the top of the casing 21 is provided with a smoke pipe 24 passing through. Hole 25, the noise reduction device 1 is arranged in the housing 21, such as figure 1 As shown, it includes a barrel-shaped body with an open end connected by a peripheral wall 11 and a bottom wall 12. The peripheral wall 11 includes an inner peripheral wall 111 and an outer peripheral wall 112. There is a gap between the walls 112. One end of the inner peripheral wall 111 and the outer peripheral wall 112 is sealed with the bottom wall 12, and the other end is connected by the connecting panel 13. The bottom wall 12, the inner peripheral wall 111, the outer peripheral wall 112 and the connecting panel 13 are enclosed by A closed cavity, the cavity is ...

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Abstract

The invention discloses a noise reduction device and a gas water heater. The noise reduction device comprises a bucket-shaped body, wherein the bucket-shaped body is defined by connecting a circumferential wall and a bottom wall, and one end of the bucket-shaped body is open. The circumferential wall comprises an inner circumferential wall and an outer circumferential wall. An air inlet channel isdefined by the middle of the inner circumferential wall. A gap is formed between the inner circumferential wall and the outer circumferential wall. A cavity is divided by first partition plates intomultiple sound attenuation cavities, at least one second partition plate is arranged in each sound attenuation cavity, each sound attenuation cavity is divided by the corresponding second partition plates into multiple layers of sub sound attenuation cavities, and the sub sound attenuation cavities are independent of each other. The second partition plates are perpendicular to the first partitionplates, and each sub sound attenuation cavity is provided with at least one sound inlet. The noise reduction device effectively absorbs noise entering the structure, and therefore sounds are effectively prevented from being leaked from the structure; and through inner structural design, sound absorption and noise reduction for different frequencies can be achieved, and noise spreading out from a box can be effectively reduced. In addition, the noise reduction device basically has no influence on the wind quantity and wind pressure, and the wind inlet quantity cannot be influenced.

Description

technical field [0001] The invention belongs to the technical field of noise reduction and noise reduction, and in particular relates to a noise reduction device and a gas water heater using the noise reduction. Background technique [0002] Gas water heaters are easy to use and have high thermal efficiency, and are deeply loved by people. However, since gas water heaters use blowers and enhanced combustion technology, noise is inevitable during use. According to the requirements of GB6932-2015, the noise of the whole machine is less than 65dB (including 65dB) as a qualified product. In the case of meeting other indicators, the lower the noise, the more competitive the market. The noise of gas water heaters mainly comes from combustion noise, fan noise, airflow noise and water flow noise. Among them, fan noise accounts for more than 80% of the noise contribution of the whole machine and is the main noise source. Therefore, reducing fan noise is an important direction for th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/66
CPCF04D29/664F04D29/665
Inventor 孙兴朋项红荧范强颜超
Owner QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER
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