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CN-114719441-B - Gas water heater and shell assembly thereof

CN114719441BCN 114719441 BCN114719441 BCN 114719441BCN-114719441-B

Abstract

The invention relates to a gas water heater and a shell component thereof, on one hand, an air inlet hole and a first air outlet are arranged in a staggered way, so that when composite noise propagates outwards after passing through a cavity, a propagation path is prolonged, and the propagation path is not in a straight-in and straight-out mode like the traditional technology, but attenuation such as refraction, reflection, diffraction and the like is generated in the cavity because of profiling fluctuation, so that the acoustic energy of part of noise can be greatly reduced. In addition, the composite noise after attenuation reaches a plurality of air inlet holes and strip-shaped openings, and as the parts corresponding to the air inlet holes and the air inlet holes on the cavity form the perforated plate resonance muffler, the resonance frequency is similar to the combustion frequency, so that the incident sound wave of the composite noise generates intense vibration friction when passing through the air inlet holes, an absorption peak is formed, and the sound energy of the noise is reduced. Therefore, the noise is attenuated in the process of propagation and diffusion in the cavity and is attenuated by acoustic energy before propagation, so that the system noise is effectively reduced, and the running noise of the whole machine can be reduced by about 3dB-5dB.

Inventors

  • LU YUCONG
  • JIANG YE
  • LI XINXUE
  • CHEN ZHENG
  • LI JIAJIE

Assignees

  • 广东万和新电气股份有限公司

Dates

Publication Date
20260505
Application Date
20220420

Claims (11)

  1. 1. A housing assembly for a gas water heater, the housing assembly comprising: The back plate (10) and the cover plate (20), wherein the cover plate (20) is arranged on the back plate (10), the cover plate (20) and the back plate (10) are enclosed to form a cavity (30), the back plate (10) is provided with a strip-shaped opening (112) and a plurality of air inlet holes (111), the air inlet holes (111) are arranged on a wall body of an air inlet path passing through the strip-shaped opening (112), the cover plate (20) is provided with at least one first air outlet (211) which is arranged in a staggered manner with the plurality of air inlet holes (111), the strip-shaped opening (112) and the first air outlet (211) are communicated with the cavity (30), the back plate (10) is provided with a first concave part (12) concavely arranged towards a direction far away from the cover plate (20), the depth of the first concave part (12) is defined as S1, the depth of the second concave part (13) is arranged adjacent to the first concave part (12), the depth of the first concave part (12) is defined as S1, the depth of the second concave part (12) is defined as the second bottom wall (12), the depth of the second concave part (12) is defined as the bottom wall (1), the depth of the second concave part (12) is defined as the bottom wall (1), the first air outlet (211) is arranged on a part of the cover plate (20) opposite to the first bottom wall (121), and at least a part of or the whole area of one side wall of the second concave part (13) forms the strip-shaped opening (112).
  2. 2. The housing assembly of a gas water heater according to claim 1, wherein the diameter of the air inlet hole (111) is defined as d, d is 1mm-3mm, the plate thickness of the back plate (10) where the air inlet hole (111) is arranged is defined as t, t is 0.6mm-1mm, the distance between the plate body of the back plate (10) where the air inlet hole (111) is arranged and the cover plate (20) is defined as L1, L1 is 5mm-20mm, and the edge distance between two adjacent air inlet holes (111) is defined as J, and J is 2mm-10mm.
  3. 3. The gas water heater housing assembly of claim 2, wherein d is 3mm, t is 0.8mm, l1 is 10mm, and j is 4mm.
  4. 4. A gas water heater housing assembly according to claim 1, wherein the hole penetration rate at the second bottom wall (131) is defined as p, p being 0.01-0.02.
  5. 5. The housing assembly of a gas water heater according to claim 1, wherein the cover plate (20) is further provided with at least one second air outlet (221) arranged in a staggered manner with the air inlet holes (111).
  6. 6. The gas water heater housing assembly according to claim 5, wherein the second air outlet (221) is disposed on a portion of the cover plate (20) opposite to the first bottom wall (121), and the second air outlet (221) is disposed at a distance from the first air outlet (211).
  7. 7. The gas water heater housing assembly according to claim 5, wherein a first protrusion (23) and a second protrusion (24) protruding toward the first bottom wall (121) are provided on a portion of the cover plate (20) opposite to the first bottom wall (121), the first protrusion (23) extends into the first recess (12) and is located between the plurality of air inlet holes (111) and the first air outlet (211), and the second protrusion (24) extends into the first recess (12) and is located between the plurality of air inlet holes (111) and the second air outlet (221).
  8. 8. The housing assembly of a gas water heater according to claim 7, wherein a distance between a plate surface of the cover plate (20) and the first bottom wall (121) is defined as L2, a height of the first protrusion (23) protruding from the plate surface of the cover plate (20) is defined as h1, and a height of the second protrusion (24) protruding from the plate surface of the cover plate (20) is defined as h2, wherein L2 is 5mm or less and 20mm, 5mm < h1<20mm, and h1< L2, 3mm < h2<18mm, and h2< h1.
  9. 9. The shell assembly of the gas water heater according to claim 1, wherein a third concave portion (14) concavely arranged towards a direction far away from the cover plate (20) and arranged adjacent to the second concave portion (13) is further arranged on the back plate (10), the bottom wall of the third concave portion (14) is defined as a third bottom wall (141), at least one air inlet (143) is arranged on the third bottom wall (141), at least one third air outlet (251) is arranged on a position, opposite to the third bottom wall (141), of the cover plate (20), and the third air outlet (251) and the air inlet (143) are arranged in a staggered mode.
  10. 10. The housing assembly of a gas water heater according to claim 9, wherein an air deflector (144) is arranged at the air inlet (143), the air deflector (144) is positioned inside the chamber (30), one side of the air deflector (144) is connected with the mouth edge of the air inlet (143), and the other side of the air deflector (144) is provided with an air flow interval with the third bottom wall (141).
  11. 11. A gas water heater comprising a housing assembly as claimed in any one of claims 1 to 10.

Description

Gas water heater and shell assembly thereof Technical Field The invention relates to the technical field of water heaters, in particular to a gas water heater and a shell assembly thereof. Background With the improvement of living standard, the requirement of the gas water heater is not limited to a simple hot water bathing function. The comfort indexes such as constant water temperature, low running noise and the like in the whole process are increasingly emphasized. The acoustic channel concept is gradually applied to the technical field of sound insulation and noise reduction of gas water heaters. The traditional gas water heater is usually hung on the wall of a kitchen, a bathroom and a balcony, the panel leaning against the wall is a back panel, and an air inlet channel for 'straight in and straight out' is usually arranged on the back panel. However, composite noise such as combustion oscillation and flame disturbance generated in the running process of the whole machine is spread outwards through the air inlet channel without attenuation, and the running noise is large, so that the product performance is poor. Disclosure of Invention The first technical problem to be solved by the invention is to provide a shell component of a gas water heater, which can effectively reduce noise and improve product performance. The second technical problem to be solved by the invention is to provide a gas water heater which can effectively reduce noise and improve product performance. The first technical problem is solved by the following technical scheme: a housing assembly for a gas water heater, the housing assembly comprising: The back plate and the cover plate are arranged on the back plate, the cover plate and the back plate are enclosed to form a cavity, the back plate is provided with a strip-shaped opening and a plurality of air inlet holes, the air inlet holes are arranged on a wall body of an air inlet path passing through the strip-shaped opening, the cover plate is provided with at least one first air outlet which is arranged in a staggered mode with the air inlet holes, and the air inlet holes, the strip-shaped opening and the first air outlet are all communicated with the cavity. Compared with the prior art, the shell component of the gas water heater has the beneficial effects that: The shell component of the gas water heater enters the chamber from the air inlet hole and the strip-shaped opening when the gas water heater is operated and combusted, and enters the gas water heater from the first air outlet, so that the requirements of primary air and secondary air supplement and heat dissipation required by combustion are met. Meanwhile, composite noise such as combustion oscillation, flame disturbance, fan operation noise and the like generated by combustion enters the cavity through the first air outlet and is transmitted outwards along the opposite direction of air flow. On the one hand, the air inlet holes and the first air outlet are arranged in a staggered manner, so that when the composite noise propagates outwards after passing through the cavity, the propagation path is prolonged, and the attenuation of refraction, reflection, diffraction and the like is generated in the cavity due to the fluctuation of the compression type instead of the straight-in and straight-out mode in the traditional technology, so that the acoustic energy of part of noise can be greatly reduced. In addition, the composite noise after attenuation reaches a plurality of air inlet holes and strip-shaped openings, and as the parts corresponding to the air inlet holes and the air inlet holes on the cavity form the perforated plate resonance muffler, the resonance frequency is similar to the combustion frequency, so that the incident sound wave of the composite noise generates intense vibration friction when passing through the air inlet holes, an absorption peak is formed, and the sound energy of the noise is reduced. Therefore, the noise is attenuated in the process of propagation and diffusion in the cavity and is attenuated by acoustic energy before propagation, so that the system noise is effectively reduced, and the running noise of the whole machine can be reduced by about 3dB-5dB. In one embodiment, the diameter of the air inlet hole is defined as d, d is 1mm-3mm, the plate thickness of the back plate, where the air inlet hole is arranged, is defined as t, t is 0.6mm-1mm, the distance between the plate body, where the air inlet hole is arranged, on the back plate and the cover plate is defined as L1, L1 is 5mm-20mm, the distance between the edges of two adjacent air inlet holes is defined as J, and J is 2mm-10mm. In one embodiment, d is 3mm, t is 0.8mm, L1 is 10mm, and J is 4mm. In one embodiment, the back plate is provided with a first concave part concavely arranged towards a direction far away from the cover plate, and a second concave part adjacently arranged to the first concave part, wherein the depth of the fi