CN110530028B - Shell, water heater and noise reduction control method - Google Patents
Shell, water heater and noise reduction control method Download PDFInfo
- Publication number
- CN110530028B CN110530028B CN201910899205.0A CN201910899205A CN110530028B CN 110530028 B CN110530028 B CN 110530028B CN 201910899205 A CN201910899205 A CN 201910899205A CN 110530028 B CN110530028 B CN 110530028B
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- noise
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- frequency
- noise generating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/02—Casings; Cover lids; Ornamental panels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Fluid Heaters (AREA)
Abstract
The invention provides a shell, a water heater and a noise reduction control method. The shell comprises a shell body, wherein the shell body is covered on the outer side of the noise generating component so as to attenuate noise emitted by the noise generating component, and the shell body is made of inorganic fibers. According to the shell, the water heater and the noise reduction control method, the shell is simple and compact in structure, noise emitted by the noise generating component can be effectively attenuated, and the use experience of a user is improved.
Description
Technical Field
The invention belongs to the technical field of noise control, and particularly relates to a shell, a water heater and a noise reduction control method.
Background
The maximum noise of the existing gas water heater can reach 90dB, and the existing gas water heater has larger noise of ignition, flameout and combustion. Most of the machines are indoor installation type machines, and the use of users is greatly affected. Particularly in a quiet environment, the noise of the ignition needle, the valve opening sound of the fuel gas proportional valve and the valve opening sound of the stop valve are particularly prominent, the high-frequency and high-pitch noise can also have a certain influence on the hearing health of a human body, and the anxiety emotion of a user can be possibly caused, and the flame noise in the combustion process is accompanied with the whole use process, so that the user experience is seriously influenced. In the prior art, some patents related to noise reduction of the water heater exist, but noise reduction pieces similar to a noise reduction baffle plate, a noise reduction sponge and the like are added on a noise propagation path, so that the noise reduction pieces are required to be stuck inside the water heater, the process is relatively complex, and the noise reduction effect is poor.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide the shell, the water heater and the noise reduction control method, wherein the shell is simple and compact in structure, can effectively attenuate the noise emitted by the noise generating component, and improves the use experience of users.
In order to solve the above problems, the present invention provides a housing, which includes a housing body, wherein the housing body is covered on the outer side of a noise generating component to attenuate noise emitted by the noise generating component, and the housing body is made of inorganic fibers.
Preferably, the pore diameter in the inorganic fiber is phi, and phi is more than or equal to 20 mu m and less than or equal to 30 mu m.
Preferably, a plurality of raised ribs are further provided on a side of the case body facing the noise generating part, and the raised ribs extend toward the side of the noise generating part.
Preferably, any plane perpendicular to the length direction of the raised rib is a first plane, on the first plane, the section of the raised rib is a half ellipse, and the long diameter of the ellipse is positioned on the shell body; and/or, the raised ribs have a hollow structure.
Preferably, on the first plane, the intersection of the outer side of the raised rib and the shell body is in a circular arc structure; and/or, the long diameter size of the raised ribs is 1.72 times of the short diameter size; and/or, when the ridge has a hollow structure, the wall thickness of the ridge is 1mm.
Preferably, a plurality of raised ribs are arranged in parallel at equal intervals, the interval between any two raised ribs is d, the maximum curvature of the raised ribs is k, and d=1.1k.
Preferably, a plurality of noise reduction holes are formed in the ridge.
Preferably, the cavity aperture of the noise reduction hole is D, and D is more than or equal to 0.5mm and less than or equal to 5mm.
The invention also provides a water heater which comprises the shell.
The invention also provides a noise reduction control method of the water heater, the water heater comprises a noise generating component and a shell covered outside the noise generating component, and the control method comprises the following steps:
acquiring a first real-time frequency of noise of a space outside the shell;
judging whether the first real-time frequency is in a noise reduction preset frequency section of the shell or not;
when the first real-time frequency is not in the noise reduction preset frequency section, adjusting the vibration frequency of the noise generation component to enable the adjusted vibration frequency to be in the noise reduction preset frequency section.
Preferably, adjusting the vibration frequency of the noise generating part includes:
when the noise generating part includes a pulse igniter, decreasing or increasing a breakdown voltage of the pulse igniter to decrease or increase an ignition frequency of the pulse igniter; and/or decreasing or increasing the current of the pulse igniter to decrease or increase the firing frequency of the pulse igniter.
Preferably, adjusting the vibration frequency of the noise generating part includes:
when the noise generating part includes a burner, the secondary pressure of the gas or the gas flow rate in front of the gas dividing rod nozzle of the burner is reduced or increased to reduce or increase the gas combustion noise frequency of the pulse igniter.
Preferably, adjusting the vibration frequency of the noise generating part includes:
when the noise generating part includes a burner, a plurality of combustion bars that the burner has are turned on row by row, and/or a plurality of combustion bars that the burner has are turned off row by row.
According to the shell, the water heater and the noise reduction control method provided by the invention, the shell is formed by adopting the inorganic fibers, the mode that the sound absorbing cotton or other silencing plates are adhered in the shell of the existing sheet metal structure is not adopted, the shell structure and the assembly process are greatly simplified, more importantly, the inorganic fibers have a three-dimensional network structure with certain strength and toughness, so that the noise emitted by noise generating components can be effectively attenuated, and meanwhile, the shell made of the inorganic fiber material also has the functions of good heat insulation performance, condensation resistance, wind resistance, no drift, strong adhesion force and the like, the surface of the shell can be effectively protected from corrosion of corrosive gas and humid gas, and the corrosion of metal structures such as sheet metal in the existing structure can be prevented.
Drawings
FIG. 1 is a schematic view of a housing according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1;
FIG. 3 is a flowchart of a method for controlling noise reduction of a water heater according to another embodiment of the present invention.
The reference numerals are expressed as:
1. a housing body; 11. a raised rib; 12. a noise reduction hole; 13. a hollow structure.
Detailed Description
Referring to fig. 1 to 3 in combination, according to an embodiment of the present invention, there is provided a housing, particularly a water heater housing, including a housing body 1, wherein the housing body 1 is covered on the outer side of a noise generating component (such as a fire grate, a gas valve, etc. capable of generating noise) to attenuate the noise generated by the noise generating component, and the housing body 1 is made of inorganic fiber, such as common glass fiber, quartz glass fiber, boron fiber, ceramic fiber, etc. In the technical scheme, the shell is formed by adopting the inorganic fiber, the mode of adhering sound-absorbing cotton or other silencing plates in the shell of the existing sheet metal structure is not adopted any more, the shell structure and the assembly process are greatly simplified, more importantly, the inorganic fiber has a three-dimensional network structure with certain strength and toughness, so that the noise emitted by a noise generating component can be effectively attenuated, and meanwhile, the shell made of the inorganic fiber material also has the functions of good heat insulation performance, condensation resistance, wind resistance, no drift, strong adhesion and the like, the surface of the shell can be effectively protected from corrosion by corrosive gas and humid gas, and the metal structures such as sheet metal in the existing structure are prevented from being corroded.
As a specific embodiment, it is preferable that the pore diameter in the inorganic fiber is phi, 20 μm or less phi 30 μm or less, that is, the pore diameter of the three-dimensional network structure is limited to the aforementioned orientation, which can limit the frequency of noise absorption of the housing to be within a reasonable range.
In order to further improve the effect of the shell on attenuating noise, preferably, a plurality of raised ribs 11 are further disposed on a side of the shell body 1 facing the noise generating component, the raised ribs 11 extend toward the side of the noise generating component, and the noise is effectively reflected inside the shell body 1 by disposing the raised ribs 11, that is, the noise in the shell is attenuated by adopting a reflection mode. Preferably, any plane perpendicular to the length direction of the ridge 11 is a first plane, on which the cross section of the ridge 11 is a half ellipse, and the major axis of the ellipse is located on the shell body 1; and/or, the ridge 11 has a hollow structure 13.
As shown in fig. 2, on the first plane, the intersection of the outer side of the raised rib 11 and the shell body 1 is in a circular arc structure, so that on one hand, the stress strain of the area where the raised rib 11 and the shell body 1 intersect can be smaller, and meanwhile, sound waves can be retroreflected, the probability of waveform elimination is increased, and preferably, the circular arc structure is tangential to the raised rib 11 and the shell body 1 together; and/or, the long diameter size of the raised ribs 11 is 1.72 times of the short diameter size; and/or, when the ridge 11 has the hollow structure 13, the wall thickness of the ridge 11 is 1mm, and the overall mass of the housing can be further reduced while securing sufficient strength of the ridge 11.
Preferably, a plurality of the raised ribs 11 are arranged in parallel at equal intervals, the interval between any two raised ribs 11 is d, and the maximum curvature of the raised ribs 11 is k, wherein d=1.1k.
Preferably, a plurality of noise reduction holes 12 are formed on the raised ribs, and the noise can be further subjected to resonance attenuation elimination through the plurality of noise reduction holes 12; further, the cavity aperture of the noise reduction hole 12 is D, and D is more than or equal to 0.5mm and less than or equal to 5mm.
According to an embodiment of the invention, a water heater, in particular a gas water heater, is further provided, which comprises the housing.
As described in the background of the present invention, in the prior art, the noise reduction of the water heater is mostly passive noise reduction, but the passive noise reduction effect is not very ideal, so according to an embodiment of the present invention, there is also provided a noise reduction control method of the water heater, where the water heater includes a noise generating component and a housing covering the outside of the noise generating component, and the control method includes the following steps:
acquiring a first real-time frequency of noise in the space outside the housing, where the first real-time frequency may be, for example, a specific frequency point value (e.g., 100 Hz) or a frequency range (e.g., 80Hz-120 Hz), which may be detected by a noise sensor existing in the market, and in a specific application, the noise sensor is disposed at a position outside the housing (e.g., may be a position 3m away from the noise generating component); when the first real-time frequency is detected and obtained, judging whether the first real-time frequency is in a noise reduction preset frequency section of the shell, wherein it can be understood that a specific value range of the noise reduction preset frequency section of the shell is related to a specific structural type of the shell, for example, the selection of the cavity aperture of the noise reduction hole 12 in the shell and the aperture selection of the inorganic fiber are both related to the noise reduction preset frequency section, that is, the preset frequency section is considered as a preset value, and can be set to specifically eliminate noise waves with higher frequency, for example, 120Hz-600Hz can be assumed; when the first real-time frequency is not in the noise reduction preset frequency band, the vibration frequency of the noise generating component is adjusted so that the adjusted vibration frequency is in the noise reduction preset frequency band, for example, the aforementioned 100Hz is not in the range of 120Hz-600Hz, and the vibration frequency of the noise generating component is adjusted at this time so as to ensure that the adjusted vibration frequency is between 90Hz-600Hz, for example, 100Hz, while it is understood that when the first real-time frequency is in the noise reduction preset frequency band, no adjustment is made to the control parameters of the noise generating component.
Further, adjusting the vibration frequency of the noise generating part includes: when the noise generating part includes a pulse igniter, decreasing or increasing a breakdown voltage of the pulse igniter to decrease or increase an ignition frequency of the pulse igniter; and/or decreasing or increasing the current of the pulse igniter to decrease or increase the firing frequency of the pulse igniter.
Alternatively, adjusting the vibration frequency of the noise generating member includes: when the noise generating part includes a burner, the secondary pressure of the gas (for example, the valve opening of the silencing gas pressure valve) or the gas flow (for example, the valve opening of the silencing gas flow valve) in front of the gas distributing rod nozzle of the burner is reduced or raised to reduce or raise the gas combustion noise frequency of the pulse igniter.
Still alternatively, adjusting the vibration frequency of the noise generating member includes: when the noise generating part includes a burner, a plurality of burning fire rows of the burner are ignited row by row, and/or a plurality of burning fire rows of the burner are extinguished row by row, that is, a plurality of rows of burning fire rows are ignited or extinguished one by one in batches, that is, by controlling the on-off of a stop valve connected with each burning fire row.
It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (12)
1. The noise reduction control method of the water heater comprises a noise generating component and a shell covered on the outer side of the noise generating component, and is characterized by comprising the following steps of:
acquiring a first real-time frequency of noise of a space outside the shell;
judging whether the first real-time frequency is in a noise reduction preset frequency section of the shell or not;
when the first real-time frequency is not in the noise reduction preset frequency section, adjusting the vibration frequency of the noise generation component to enable the adjusted vibration frequency to be in the noise reduction preset frequency section.
2. The control method according to claim 1, wherein adjusting the vibration frequency of the noise generating member includes:
when the noise generating part includes a pulse igniter, decreasing or increasing a breakdown voltage of the pulse igniter to decrease or increase an ignition frequency of the pulse igniter; and/or decreasing or increasing the current of the pulse igniter to decrease or increase the firing frequency of the pulse igniter.
3. The control method according to claim 1, wherein adjusting the vibration frequency of the noise generating member includes:
when the noise generating part includes a burner, the secondary pressure of the gas or the gas flow rate in front of the gas dividing rod nozzle of the burner is reduced or increased to reduce or increase the gas combustion noise frequency of the burner.
4. The control method according to claim 1, wherein adjusting the vibration frequency of the noise generating member includes:
when the noise generating part includes a burner, a plurality of combustion bars that the burner has are turned on row by row, and/or a plurality of combustion bars that the burner has are turned off row by row.
5. The control method according to claim 1, wherein the housing includes a housing body (1), the housing body (1) being covered on the outside of the noise generating member to attenuate noise emitted from the noise generating member, and the housing body (1) being made of inorganic fiber.
6. The method according to claim 5, wherein the pore diameter in the inorganic fiber is phi, and phi is 20 μm or less and 30 μm or less.
7. The control method according to claim 5, characterized in that the side of the housing body (1) facing the noise generating member is further provided with a plurality of raised ribs (11), the plurality of raised ribs (11) extending toward the side of the noise generating member.
8. The control method according to claim 7, characterized in that any one of planes perpendicular to the lengthwise direction of the ridge (11) is a first plane on which the cross section of the ridge (11) is a half ellipse, and the major diameter of the ellipse is located on the case body (1); and/or the raised ribs (11) have a hollow structure (13).
9. The control method according to claim 8, characterized in that on the first plane, the intersection of the outside of the ridge (11) with the shell body (1) is of a circular arc structure; and/or the long diameter size of the raised ribs (11) is 1.72 times of the short diameter size; and/or, when the ridge (11) has a hollow structure (13), the wall thickness of the ridge (11) is 1mm.
10. The control method according to claim 7, characterized in that a plurality of the ridge bars (11) are arranged in parallel at equal intervals, the interval between any two ridge bars (11) is d, and the maximum curvature of the ridge bars (11) is k, d=1.1 k.
11. The control method according to any one of claims 7 to 10, characterized in that the ridge is constructed with a plurality of noise reduction holes (12).
12. The control method according to claim 11, characterized in that the cavity aperture of the noise reduction hole (12) is D,0.5mm +.d +.5 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910899205.0A CN110530028B (en) | 2019-09-23 | 2019-09-23 | Shell, water heater and noise reduction control method |
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| CN201910899205.0A CN110530028B (en) | 2019-09-23 | 2019-09-23 | Shell, water heater and noise reduction control method |
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| CN110530028A CN110530028A (en) | 2019-12-03 |
| CN110530028B true CN110530028B (en) | 2023-09-26 |
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