CN111899709A - Damping silencer, gas water heater and control method of gas water heater - Google Patents
Damping silencer, gas water heater and control method of gas water heater Download PDFInfo
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- CN111899709A CN111899709A CN202010560588.1A CN202010560588A CN111899709A CN 111899709 A CN111899709 A CN 111899709A CN 202010560588 A CN202010560588 A CN 202010560588A CN 111899709 A CN111899709 A CN 111899709A
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- 238000013016 damping Methods 0.000 title claims abstract description 157
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 230000003584 silencer Effects 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000009467 reduction Effects 0.000 claims abstract description 35
- 239000000779 smoke Substances 0.000 claims description 16
- 230000008030 elimination Effects 0.000 abstract description 63
- 238000003379 elimination reaction Methods 0.000 abstract description 63
- 238000010521 absorption reaction Methods 0.000 abstract description 30
- 230000030279 gene silencing Effects 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 19
- 230000001743 silencing effect Effects 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 description 15
- 238000004891 communication Methods 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
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- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
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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
- F24H9/0005—Details for water heaters
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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
- F24H9/20—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
Abstract
The invention discloses a damping silencer, a gas water heater and a control method of the gas water heater, wherein the damping silencer comprises at least one group of damping silencing units and an adjusting assembly, each damping silencing unit at least comprises a first silencing sheet and a second silencing sheet which are arranged side by side, a gap is formed between each first silencing sheet and each second silencing sheet, the gap is used for allowing air flow and/or sound to pass through, and the adjusting assembly is connected with the damping silencing units and is used for adjusting the tension force of the damping silencing units. The damping silencer has a simple and ingenious structure, and has a remarkable sound absorption and silencing effect through the resonance sound absorption and silencing of the damping silencing unit; in addition, the tensioning force of the damping noise elimination unit is adjusted through the adjusting assembly, so that the damping muffler can adaptively adjust the sound absorption and noise elimination frequency band, and the adaptability and the accurate noise reduction effect of the damping muffler are improved.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to a silencing technology of a gas water heater.
Background
The gas water heater is accepted by consumers due to the advantages of energy conservation, environmental protection and the like, but the noise problem of the gas water heater during operation is also troubled. It is understood that the national standard requires no more than 65 db for the combustion noise of a gas water heater, while the noise generated by a common gas water heater during operation is generally more than 55 db. According to the medical experiment data, the noise value exceeds 50 decibels, which is equivalent to that a person speaks loudly, and normal life is influenced; 60-70 dB is equivalent to standing on a street with calm Sichuan streams, which can cause people to be upset and confused and not be concentrated; above 90 db is equivalent to a noisy bar, and if the person lives in such a noisy environment for a long time, the hearing is seriously affected and other diseases such as cardiovascular diseases occur.
Along with the improvement of the requirements of people on the living quality, users pay more and more attention to the size of the noise parameter of the gas water heater when purchasing the gas water heater, so that the quality of the noise performance becomes a big key factor influencing the product competitiveness. Therefore, the noise becomes a technical problem to be solved urgently in the existing gas water heater.
In addition, the existing noise reduction measures such as sound absorption cotton and sound insulation and sound absorption cannot be adjusted adaptively according to noise frequency bands, and are poor in adaptability and noise reduction effect, so that user experience is influenced.
Disclosure of Invention
The invention aims to solve one of the problems in the prior art at least to a certain extent, and therefore the invention provides a damping silencer which is simple and ingenious in structure, has a remarkable sound absorption and silencing effect, can adaptively adjust the sound absorption and silencing frequency band of the damping silencer and is stronger in adaptability.
The invention also provides a gas water heater with the damping silencer, which can obviously reduce indexes such as noise of the gas water heater, improve user experience and improve product competitiveness of companies.
The invention also provides a control method of the gas water heater, which realizes the adjustment of the sound absorption and silencing frequency band of the damping silencer according to the working parameters of the fan by linking the damping silencer and the fan, improves the adaptability and pertinence of products, obviously improves the noise reduction effect of the water heater and improves the user experience.
According to the damping muffler that provides above-mentioned, it realizes through following technical scheme:
the damping muffler comprises at least one group of damping muffling units and an adjusting assembly, wherein each damping muffling unit at least comprises a first muffling sheet and a second muffling sheet which are arranged side by side, a gap is formed between each first muffling sheet and each second muffling sheet and is used for allowing air flow and/or sound to pass through, and the adjusting assembly is connected with the damping muffling units and is used for adjusting the tension of the damping muffling units.
In some embodiments, the first sound-deadening sheet has a thickness of 500 to 2000 μm, and the second sound-deadening sheet has a thickness less than or equal to the thickness of the first sound-deadening sheet.
In some embodiments, the damping and noise elimination unit further includes a third noise elimination sheet, the third noise elimination sheet is arranged side by side on the side of the second noise elimination sheet far away from the first noise elimination sheet, and a gap is formed between the third noise elimination sheet and the second noise elimination sheet.
In some embodiments, the third sound-deadening sheet has a thickness greater than or equal to a thickness of the second sound-deadening sheet, and the second sound-deadening sheet has a thickness greater than or equal to a thickness of the first sound-deadening sheet.
In some embodiments, the adjusting assembly comprises an adjusting support and a driver, the adjusting support is provided with a plurality of groups of damping silencing units side by side, two ends of each damping silencing unit are respectively connected with two opposite side walls in the adjusting support, a gap is formed between every two adjacent damping silencing units, the driver is connected with the adjusting support and used for driving the adjusting support to perform telescopic motion, and the motion of the adjusting support can adjust the tension of the damping silencing units.
In some embodiments, the adjusting bracket comprises a first adjusting bracket and a second adjusting bracket, two ends of the damping and noise elimination unit are respectively connected with the first adjusting bracket and the second adjusting bracket, and the driver is connected with the first adjusting bracket or the second adjusting bracket and used for driving the first adjusting bracket and the second adjusting bracket to move relatively.
In some embodiments, the adjusting assembly further comprises a detecting unit, and the detecting unit is arranged on the adjusting bracket and used for detecting the tension of the damping and noise elimination unit.
According to the gas heater who provides above-mentioned, it realizes through following technical scheme:
the utility model provides a gas water heater, includes water heater body, combustor, fan and controller, the water heater body is equipped with inlet channel and exhaust smoke channel, inlet channel with exhaust smoke channel communicates respectively the air inlet and the exhaust port of combustor, wherein still include as above the damping silencer inlet channel with between the air inlet of combustor and/or exhaust smoke channel with install between the exhaust port of combustor the damping silencer, the controller respectively with the fan with the adjusting part electricity of damping silencer is connected.
According to the control method of the gas water heater, the control method is realized through the following technical scheme:
a control method of a gas water heater, which applies a gas water heater as described above, the control method comprising the steps of:
s1: starting the gas water heater to work;
s2: acquiring working parameters of a fan, wherein the working parameters comprise fan rotating speed or fan driving voltage;
s3: the acquired operating parameters are compared with at least one reference value, and the operating state of the damping muffler is controlled based on the comparison result.
In some embodiments, in step S3, the reference value includes a minimum value and a maximum value, and if the obtained operating parameter is less than or equal to the minimum value, the damping noise reduction mode is not turned on; and if the working parameters of the fan are larger than the maximum value, the damping noise reduction mode is started, and the tension of the damping muffler is adjusted to be maximum.
Compared with the prior art, the invention at least comprises the following beneficial effects:
1. the damping silencer has a simple and ingenious structure, and has a remarkable sound absorption and silencing effect through the resonance sound absorption and silencing of the damping silencing unit;
2. the tensioning force of the damping noise elimination unit is adjusted through the adjusting assembly, so that the damping muffler can adjust the sound absorption noise elimination frequency band of the damping muffler in an adaptive mode, and the adaptability and the accurate noise reduction effect of the damping muffler are improved.
Drawings
FIG. 1 is a schematic structural view of a damping muffler in embodiment 1 of the present invention;
FIG. 2 is a schematic structural diagram of a damping and sound-eliminating unit and a connecting piece in the embodiment 1 of the invention;
FIG. 3 is a partial schematic structural view of a gas water heater 2 according to an embodiment of the present invention;
fig. 4 is a flowchart of a control method of a gas water heater in embodiment 3 of the present invention.
Detailed Description
The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the invention or equivalent substitutions of parts of technical features without departing from the spirit of the invention are intended to be covered by the scope of the claims of the invention.
The noise of the gas water heater is mainly combustion noise and fan noise, wherein the peak value of the combustion noise accounts for the main part of the gas water heater. The combustion noise is wide in frequency band and has obvious peak components in a low-frequency range, in the combustion process, if combustible gas and air are in an optimal mixing state, the combustion roar of the combustible gas has the highest peak frequency, and if the combustion roar is not in the optimal mixing state, the roar peak frequency moves downwards, and most sound energy of the combustion roar is concentrated between 150 and 600 Hz. The research shows that: the peak noise wave band of the gas water heater is mainly concentrated between 150Hz and 600Hz and belongs to a low-frequency wave band.
To low frequency noise, its wavelength is longer, can easily walk around the barrier, and the tradition is inhaled the sound cotton and is had good noise reduction effect to high frequency noise, but is relatively poor to low frequency noise effect, consequently, the noise reduction measures such as cotton and sound insulation sound absorption are all very difficult noise reduction to the conventional use of inhaling.
Example 1
As shown in fig. 1-2, the present embodiment provides a damping muffler, the damping muffler 100 includes at least one set of damping muffling unit 1 and an adjusting assembly 2, the damping muffling unit 1 includes at least a first muffling piece 11 and a second muffling piece 12 arranged side by side, a gap 101 is formed between the first muffling piece 11 and the second muffling piece 12, the gap 101 is used for allowing air flow and/or sound to pass through, when the air flow and/or sound passes through the gap 101 of the damping muffler 100, resonance of the first muffling piece 11 and the second muffling piece 12 is caused, thereby achieving sound absorption and sound elimination. The adjusting component 2 is connected with the damping noise elimination unit 1 and used for adjusting the tensile force of the damping noise elimination unit 1, so that the tensile force of the damping noise elimination unit 1 can be adjusted through the adjusting component 2 according to the noise frequency band, the sound absorption noise elimination frequency band of the damping muffler 100 can be adjusted adaptively, the adaptability and pertinence of the damping muffler 100 are improved, and the noise reduction effect is improved obviously.
Therefore, the damping muffler of the embodiment has a simple and smart structure, and the damping muffler 100 has a significant sound absorption and noise elimination effect through the resonance sound absorption and noise elimination of the damping noise elimination unit 1; in addition, the tensioning force of the damping noise elimination unit 1 is adjusted through the adjusting component 2, so that the damping muffler 100 can adaptively adjust the sound absorption and noise elimination frequency band, and the adaptability and the accurate noise reduction effect of the damping muffler 100 are improved.
Preferably, the number of the damping noise elimination units 1 is more than 2, and a gap 101 for air flow and/or sound to pass through is formed between two adjacent groups of the damping noise elimination units 1, so that the porosity of the damping noise eliminator 100 is improved, the unit ventilation volume and the sound absorption noise elimination channel are increased, and the sound absorption noise elimination effect is further enhanced; meanwhile, the damping muffler 100 can achieve rectification and air combing effects.
Preferably, the thickness of the first muffling sheet 11 is 500 to 2000 μm, and the thickness of the second muffling sheet 12 is less than or equal to the thickness of the first muffling sheet 11. In this embodiment, the thickness of the second muffling sheet 12 is 10 μm to 500 μm, so that the resonance frequency generated by the first muffling sheet 11 is smaller than the resonance frequency generated by the second muffling sheet 12, the first muffling sheet 11 can absorb and muffle low-frequency noise, and the second muffling sheet 12 can absorb and muffle medium-frequency or high-frequency noise, thereby increasing the sound absorption and muffling frequency band of the damping muffler 100.
In other embodiments, the thickness of the second muffling sheet 12 can be 500 μm to 2000 μm, so that the damping muffling unit 1 (i.e., the damping muffler 100) is dedicated to the sound absorption and muffling treatment of low-frequency noise.
As shown in fig. 2, further, the damping and noise elimination unit 1 further includes a third noise elimination sheet 13, the third noise elimination sheet 13 is disposed side by side on a side of the second noise elimination sheet 12 far from the first noise elimination sheet 11, and gaps 101 for air flow and/or sound to pass through are formed between the third noise elimination sheet 13 and the second noise elimination sheet 12, and between the third noise elimination sheet 13 and the first noise elimination sheet 11 of the adjacent group of damping and noise elimination units 1. Therefore, the third sound-absorbing sheet 13 further improves the porosity and sound-absorbing effects of the damping muffler 100.
Preferably, the thickness of the third muffling sheet 13 is less than or equal to the thickness of the second muffling sheet 12, and the thickness of the second muffling sheet 12 is less than or equal to the thickness of the first muffling sheet 11. Specifically, the thickness of the third muffling sheet 13 is 10 μm to 100 μm, the thickness of the second muffling sheet 12 is 100 μm to 500 μm, and the thickness of the first muffling sheet 11 is 500 μm to 2000 μm, so that the resonance frequency generated by the third muffling sheet 13 is greater than the resonance frequency generated by the second muffling sheet 12, and the third muffling sheet 13 can perform sound absorption and muffling on high-frequency noise, so that each group of damping muffling units 1 can perform sound absorption and muffling on low-frequency, medium-frequency and high-frequency noise, the noise reduction range is wide, and the noise reduction effect of the damping muffling 100 is significantly improved.
More preferably, the first, second, and third muffling sheets 11, 12, and 13 are made of any one of a flame-retardant film, flame-retardant paper, and artificial leather.
As shown in fig. 1, specifically, the adjusting assembly 2 includes an adjusting bracket 21 capable of performing telescopic motion and a driver (not shown in the figure), a plurality of groups of damping noise elimination units 1 are arranged in the adjusting bracket 21 side by side, two ends of each damping noise elimination unit 1 are respectively connected to two opposite side walls in the adjusting bracket 21, a gap 101 is formed between two adjacent groups of damping noise elimination units 1, the driver is connected to the adjusting bracket 21 and is used for driving the adjusting bracket 21 to perform telescopic motion along the length direction of the damping noise elimination units 1, and the motion of the adjusting bracket 21 drives each group of damping noise elimination units 1 to move, thereby adjusting the tension of the damping noise elimination units 1. From this, damping muffler 100 can be according to the noise frequency channel, through the concertina movement of driver control adjusting part 2, and then realizes adjusting damping noise elimination unit 1's tensile force size through adjusting part 2, promotes damping muffler 100 to the adaptability of noise frequency channel, and sound absorption noise elimination frequency channel pertinence is high, and accurate noise reduction effect is showing more.
More specifically, the adjusting bracket 21 includes a first adjusting bracket 211 and a second adjusting bracket 212, both ends of the damping and noise elimination unit 1 are respectively connected with the first adjusting bracket 211 and the second adjusting bracket 212, and the driver is connected with the first adjusting bracket 211 or the second adjusting bracket 212 for driving the first adjusting bracket 211 and the second adjusting bracket 212 to move relatively. When the driver drives the first adjusting bracket 211 and the second adjusting bracket 212 to move in the opposite direction, the tension of the damping muffling unit 1 is increased, the higher the resonance frequency is, the higher the noise frequency band of the muffling noise is, and thus the noise reduction effect of the high-frequency band noise is improved. When the driver drives the first adjusting bracket 211 and the second adjusting bracket 212 to move towards the approaching direction, the tension of the damping and noise elimination unit 1 is reduced, the generated resonance frequency is reduced, and the noise frequency band for sound absorption and elimination is reduced, so that the noise reduction effect of low-frequency noise is improved. It can be seen that, by driving the first adjusting bracket 211 and the second adjusting bracket 212 to move relatively, the damping muffler 100 can change its main sound absorbing and silencing frequency band, and has wider noise reduction adaptability and better targeted and accurate noise reduction effect.
In this embodiment, the adjusting bracket 211 comprises a first connecting rod 2111 and at least one first telescopic rod 2112 which are connected with each other, the second adjusting bracket 212 comprises a second connecting rod 2121 and at least one second telescopic rod 2122 which are connected with each other, the number of the second telescopic rods 2122 is the same as that of the first telescopic rods 2112, and the second telescopic rods 2122 are telescopically connected with the first telescopic rods 2112. The two ends of the damping noise elimination unit 1 are respectively connected with the first connecting rod 2111 and the second connecting rod 2121.
Preferably, the number of the first telescopic rods 2112 is two, and the two first telescopic rods 2112 are respectively disposed at two opposite ends of the same side of the first connecting rod 2111, so that the first adjusting bracket 211 is in a concave shape. Correspondingly, the number of the second telescopic rods 2122 is two, and the two second telescopic rods 2122 are respectively disposed at two opposite ends of the same side of the second connecting rod 2121, so that the second adjusting bracket 212 is also shaped like a Chinese character 'ao'. When the first extension rod 2112 is telescopically connected with the second extension rod 2122, the first adjusting bracket 211 and the second adjusting bracket 212 together define an accommodating cavity suitable for accommodating a plurality of groups of damping and noise elimination units 1, and two ends of each group of damping and noise elimination units 1 are respectively connected with two opposite inner side walls of the accommodating cavity.
As shown in fig. 1, further, the adjusting assembly 2 further includes a detecting unit 22, the detecting unit 22 is disposed on the adjusting bracket 21, and is configured to detect a tension of the damping muffling unit 1, so that the tension of the damping muffling unit 100 can be accurately detected through the detecting unit 22, which is beneficial to improving the control accuracy of the damping muffling unit 100.
Furthermore, the damping and noise elimination device further comprises a connecting piece 3, and two ends of the damping and noise elimination unit 1 are respectively connected with two opposite side walls in the adjusting bracket 21 through the connecting piece 3. Specifically, the connecting piece 3 is a connecting block, the connecting blocks are fixedly mounted at two ends of the damping and noise elimination unit 1 respectively, the two connecting blocks at the two ends of the damping and noise elimination unit 1 are connected with the first connecting rod 2111 of the first adjusting support 211 and the second connecting rod 2121 of the second adjusting support 212 respectively, so that the damping and noise elimination unit 1 and the two connecting blocks at the two ends of the damping and noise elimination unit 1 form a whole, the damping and noise elimination unit 1 can be assembled quickly, and meanwhile, the two ends of the damping and noise elimination unit 1 can be connected with the first adjusting support 211 and the second adjusting support 212 conveniently.
Example 2
As shown in fig. 3, the gas water heater provided by this embodiment includes a water heater body (not shown), a burner 200, a fan (not shown) and a controller (not shown), the water heater body is provided with an air inlet channel and a smoke exhaust channel, the air inlet channel and the smoke exhaust channel are respectively communicated with an air inlet and a smoke exhaust port of the burner 200, the gas water heater further includes a damping muffler as described in embodiment 1, the damping muffler is installed between the air inlet channel and the burner 200 and/or between the smoke exhaust channel and the smoke exhaust port of the burner 200, and the controller is respectively electrically connected to the fan and the adjusting component 2 of the damping muffler. Since the structure of the damping muffler 100 has been described in detail, specifically and clearly in embodiment 1, it is not described herein again.
Specifically, the intake passage includes a gas intake passage and an air intake passage, and the damping muffler 100 is installed between the gas intake passage and the intake port of the burner 200 and/or between the air intake passage and the intake port of the burner 200. The electrical connection includes an electrical connection and a communication connection, wherein the communication connection includes a wireless communication connection and a wired communication connection.
It can be seen that, in the gas water heater of the embodiment, the damping muffler 100 is installed between the air inlet channel and the air inlet of the burner 200 and/or between the smoke exhaust channel and the smoke exhaust of the burner 200, when combustion noise and/or smoke exhaust noise is transmitted outwards, resonance of the damping muffler 100 is triggered to achieve the sound absorption and silencing effect, so that indexes such as noise of the gas water heater can be obviously reduced, the user experience degree is improved, and the product competitiveness of a company is improved; in addition, the tension of the damping noise elimination unit 1 of the damping muffler 100 can be adaptively adjusted according to the combustion noise and/or the smoke exhaust noise of the gas water heater, so that the sound absorption and noise elimination frequency band of the damping muffler 100 is adjusted, the adaptability of noise reduction treatment is improved, and the purpose of targeted and accurate noise reduction is achieved.
Example 3
As shown in fig. 4, the present embodiment provides a control method of a gas water heater, which applies the gas water heater according to embodiment 2, and the control method includes the steps of:
s1: starting the gas water heater to work;
s2: acquiring working parameters of the fan, wherein the working parameters comprise fan rotating speed or fan driving voltage;
specifically, the gas water heater further comprises a fan detector used for monitoring the fan rotating speed or the fan driving voltage, the fan detector is electrically connected with the controller, the fan rotating speed or the fan driving voltage is monitored through the fan detector, and the monitored signals are fed back to the controller, so that the controller can send out corresponding instructions.
S3: the acquired operating parameters are compared with at least one reference value, and the operating state of the damping muffler is controlled based on the comparison result.
Specifically, the reference value comprises a minimum value and a maximum value, if the obtained working parameter is not more than the minimum value, the damping noise reduction mode is not started, which indicates that the fan rotating speed or fan driving voltage of the fan is low, the combustion noise of the water heater is low, the water heater can work in a normal mode, and the noise reduction treatment is not required to be carried out by increasing the tension of the damping silencer. If the working parameter of the fan is larger than the maximum value, the rotating speed of the fan is high, the combustion of the water heater is violent, the combustion high-frequency noise accounts for more, the damping noise reduction mode needs to be started, and the tensioning force of the damping muffler is adjusted to be maximum, so that the noise reduction effect on the combustion high-frequency noise is improved.
Therefore, according to the control method of the gas water heater, the working parameters of the fan are obtained, the obtained working parameters are compared with at least one reference value, and the working state of the damping silencer is controlled based on the comparison result, so that the sound absorption and silencing frequency band of the damping silencer is adaptively adjusted according to the condition that the water heater generates combustion noise, the adaptability of noise reduction processing of the water heater is improved, the aims of pertinently and accurately reducing noise and efficiently reducing noise are fulfilled, the user experience degree is improved, and the product competitiveness of a company is improved.
Preferably, the controller automatically adjusts the tension of the damping muffler according to the driving voltage of the fan, and the specific adjustment mode is shown in table 1:
TABLE 1 relationship between fan drive voltage and damping muffler tension
| Fan drive voltage | Tension of damping muffler |
| The driving voltage of the fan is less than or equal to 1V | Non-opening damping noise reduction mode |
| The driving voltage of the fan is more than 1V and less than or equal to 1.5V | 100N |
| The driving voltage of the fan is more than 1.5V and less than or equal to 2V | 150N |
| The driving voltage of the fan is more than 2V and less than or equal to 3V | 200N |
| The driving voltage of the fan is more than 3V and less than or equal to 4V | 250N |
| 4V < fan driving voltage | 300N |
As can be seen from table 1, the tension of the damping muffler is adaptively adjusted according to the magnitude of the fan driving voltage, and the damping muffler has 5 tension adjustment stages. When the tensioning force of the damping silencer is higher, the sound absorption and noise elimination capability of the damping silencer to high-frequency noise is stronger, and otherwise, the sound absorption and noise elimination effect to low-frequency noise is better.
More preferably, in step S3, if the damping noise reduction mode is turned on, the controller continuously determines whether to exit the damping noise reduction mode, if so, the damping noise reduction mode exits, and if not, the controller continues to automatically adjust the tension of the damping muffler according to the fan driving voltage.
Specifically, the controller continuously judges whether to exit the damping noise reduction mode, and automatically exits the damping noise reduction mode by judging whether the fan driving voltage is less than or equal to a minimum value (namely 1V) if the fan driving voltage is less than or equal to the minimum value; or, the damping noise reduction mode is exited by judging whether the user passes through the operation function of the gas water heater.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (10)
1. The damping muffler is characterized in that the damping muffler (100) comprises at least one group of damping muffling units (1) and an adjusting assembly (2), the damping muffling units (1) at least comprise first muffling sheets (11) and second muffling sheets (12) which are arranged side by side, a gap (101) is formed between the first muffling sheets (11) and the second muffling sheets (12), the gap (101) is used for allowing air flow and/or sound to pass through, and the adjusting assembly (2) is connected with the damping muffling units (1) and used for adjusting the tension of the damping muffling units (1).
2. A damped muffler according to claim 1, wherein the thickness of the first muffler plate (11) is 500 μm to 2000 μm, and the thickness of the second muffler plate (12) is less than or equal to the thickness of the first muffler plate (11).
3. A damping muffler according to claim 1, wherein the damping muffler unit (1) further comprises a third muffler plate (13), the third muffler plate (13) is arranged side by side on the side of the second muffler plate (12) away from the first muffler plate (11), and a gap (101) is formed between the third muffler plate (13) and the second muffler plate (12).
4. A damped muffler according to claim 3, wherein the thickness of the third muffling sheet (13) is greater than or equal to the thickness of the second muffling sheet (12), and the thickness of the second muffling sheet (12) is greater than or equal to the thickness of the first muffling sheet (11).
5. The damping muffler is characterized in that the adjusting assembly (2) comprises an adjusting bracket (21) capable of telescopic movement and a driver, a plurality of groups of damping muffling units (1) are arranged in the adjusting bracket (21) side by side, two ends of each damping muffling unit (1) are respectively connected with two opposite side walls in the adjusting bracket (21), a gap (101) is formed between every two adjacent groups of damping muffling units (1), the driver is connected with the adjusting bracket (21) and is used for driving the adjusting bracket (21) to perform telescopic movement, and the movement of the adjusting bracket (21) can adjust the tension of the damping muffling units (1).
6. The damping muffler according to claim 5, wherein the adjusting bracket (21) comprises a first adjusting bracket (211) and a second adjusting bracket (212), the two ends of the damping muffler unit (1) are respectively connected with the first adjusting bracket (211) and the second adjusting bracket (212), and the driver is connected with the first adjusting bracket (211) or the second adjusting bracket (212) and is used for driving the first adjusting bracket (211) and the second adjusting bracket (212) to move relatively.
7. The damping muffler according to claim 5, wherein the adjusting assembly (2) further comprises a detecting unit (22), and the detecting unit (22) is disposed on the adjusting bracket (21) and used for detecting the tension of the damping muffler unit (1).
8. A gas water heater comprises a water heater body, a burner (200), a fan and a controller, wherein the water heater body is provided with an air inlet channel and a smoke exhaust channel which are respectively communicated with an air inlet and a smoke exhaust of the burner (200), and the gas water heater is characterized by further comprising a damping silencer according to any one of claims 1 to 7, wherein the damping silencer is arranged between the air inlet channel and the air inlet of the burner (200) and/or between the smoke exhaust channel and the smoke exhaust of the burner (200), and the controller is respectively electrically connected with the fan and an adjusting component (2) of the damping silencer.
9. A control method of a gas water heater, characterized in that it applies a gas water heater as claimed in claim 8, the control method comprising the steps of:
s1: starting the gas water heater to work;
s2: acquiring working parameters of a fan, wherein the working parameters comprise fan rotating speed or fan driving voltage;
s3: the acquired operating parameters are compared with at least one reference value, and the operating state of the damping muffler is controlled based on the comparison result.
10. The control method of a gas water heater according to claim 9, wherein in step S3, the reference values include a minimum value and a maximum value, and if the obtained operating parameter is less than or equal to the minimum value, the damping noise reduction mode is not turned on; and if the working parameters of the fan are larger than the maximum value, the damping noise reduction mode is started, and the tension of the damping muffler is adjusted to be maximum.
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| CN202010560588.1A CN111899709A (en) | 2020-06-18 | 2020-06-18 | Damping silencer, gas water heater and control method of gas water heater |
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