Noise reduction device and gas water heater

A technology of noise reduction and inner peripheral wall, which is applied to fluid heaters, components of pumping devices for elastic fluids, machines/engines, etc., and can solve problems such as poor noise reduction effects

Pending Publication Date: 2020-06-16
QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER +1
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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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Embodiment 1

[0026] Embodiment 1, this embodiment proposes a noise reduction device, such as Figure 1-Figure 3 As shown, it includes a barrel-shaped body with an open end that is connected and surrounded 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 inner peripheral wall 111 and the outer peripheral wall 112. The inner peripheral wall 111 and the outer peripheral wall One end of the wall 112 is sealed and connected to the bottom wall 12, and the other end is connected through the connecting panel 13. A closed cavity is formed between the bottom wall 12, the inner peripheral wall 111, the outer peripheral wall 112 and the connecting panel 13, and the cavity is separated by a partition 14. Several sound-absorbing cavities 15 are formed, and the sound inlets 151 of the sound-absorbing chambers 15 are opened on the inner peripheral wall 111 . The peripheral wall 11 can be ...

Embodiment 2

[0040] Embodiment two, this embodiment proposes a kind of gas water heater at the same time, as Figure 5-Figure 7 As shown, it includes a housing 21 and a fan 22 arranged in the housing 21. The housing 21 is provided with an air inlet 23 opposite to the inlet of the fan 22. The top of the housing 21 is provided with a smoke pipe through which the smoke pipe 24 passes. hole 25, the housing 21 is provided with a noise reduction device 1, such as figure 1 As shown, the noise reduction device 1 includes a barrel-shaped body with one end open and surrounded 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 inner peripheral wall 111 and the outer peripheral wall 112. One end of the peripheral wall 111 and the outer peripheral wall 112 is sealed and connected to the bottom wall 12, and the other end is connected through the connecting panel 13. A closed cavity is for...

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Abstract

The invention discloses a noise reduction device and a gas water heater. The noise reduction device comprises a barrel-shaped body with an open end defined by a peripheral wall and a bottom wall, theperipheral wall comprises an inner peripheral wall and an outer peripheral wall, a gap is formed between the inner peripheral wall and the outer peripheral wall, one ends of the inner peripheral walland the outer peripheral wall are hermetically connected with the bottom wall, the other ends of the inner peripheral wall and the outer peripheral wall are connected through a connecting panel, and aclosed cavity is defined among the bottom wall, the inner peripheral wall, the outer peripheral wall and the connecting panel. The cavity is partitioned by partition plates to form a plurality of silencing cavities, and sound inlets of the silencing cavities are formed in the inner peripheral wall. According to the noise reduction device, the sound passing through the structure can be effectivelyabsorbed, so that the sound can be effectively prevented from leaking out, sound absorption and noise reduction aiming at different frequencies can be realized through the internal structure design,and noise transmitted out of a box body can be effectively reduced. In addition, the noise reduction structure almost has no influence on the air quantity and the air pressure and does not influence the air inlet quantity.

Description

technical field [0001] The invention relates to a noise reduction device. Background technique [0002] Gas water heaters are easy to use and have high thermal efficiency, and are deeply loved by people. However, since the gas water heater uses blower and enhanced combustion technology, it will inevitably make noise during use. According to the requirements of GB6932-2015, the noise of the whole machine is below 65dB (including 65 dB) is a qualified product, and in the case of meeting other indicators, the product with lower noise is more competitive in the market. The noise of gas water heaters mainly comes from combustion noise, fan noise, airflow noise and water flow noise, etc. 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 the improvement of gas water heaters. . For the noise control of centrifugal fans of gas water heaters, most ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H9/00F04D29/66
CPCF04D29/663F24H9/0005
Inventor 孙兴朋项红荧范强闫茂松颜超
Owner QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER
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