CN216204342U - Gas water heater - Google Patents
Gas water heater Download PDFInfo
- Publication number
- CN216204342U CN216204342U CN202122326582.0U CN202122326582U CN216204342U CN 216204342 U CN216204342 U CN 216204342U CN 202122326582 U CN202122326582 U CN 202122326582U CN 216204342 U CN216204342 U CN 216204342U
- Authority
- CN
- China
- Prior art keywords
- neck
- combustion chamber
- water heater
- shell
- gas water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The application relates to the technical field of water heaters and discloses a gas water heater. This gas heater includes: a housing; a combustion chamber located within the housing; the silencer is arranged between the inner wall surface of the outer shell and the outer wall surface of the combustion chamber and comprises a shell and a neck, wherein the shell is limited to form a silencing cavity, and the neck is arranged on the shell and communicated with the silencing cavity and the combustion chamber. The noise at the combustion chamber is the largest, the silencer is arranged between the shell and the combustion chamber, and most energy is consumed by incident sound waves entering the neck from the combustion chamber in the process of back-and-forth entering the neck, so that the effects of inhibiting thermoacoustic oscillation and reducing noise are achieved, and the silencing effect is good.
Description
Technical Field
The application relates to the technical field of water heaters, in particular to a gas water heater.
Background
At present, the existing gas water heater may have violent fluctuation of flame in the cold start or running process and generate strong oscillation noise, and the phenomenon is generally called as thermoacoustic oscillation or unstable combustion. Especially in the pursuit of better emission performance, existing gas water heaters are often designed in partially or even fully premixed form, with the equivalence ratio of combustion being further away from 1 (an equivalence ratio of 1 means that the fuel and air provided can react just completely). This results in a stronger heat-release pulsation when the flame is subjected to the same disturbance (such as a change in fuel or air concentration), and the thermo-acoustic oscillation phenomenon is caused by the coupling of the heat-release pulsation and the acoustic pressure pulsation, so that the thermo-acoustic oscillation is caused with a greater probability.
The thermoacoustic oscillation not only affects the use experience of users, but also can destroy the structure of the gas water heater by violent oscillation, thereby generating potential safety hazard.
The current gas heater attempts to use the bigger diameter tobacco pipe to alleviate the oscillation, but can not solve the oscillation problem completely, can increase the volume of tobacco pipe moreover, increases the cost of tobacco pipe and influences the pleasing to the eye of tobacco pipe.
SUMMERY OF THE UTILITY MODEL
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a gas water heater to solve the problem that the thermoacoustic oscillation effect of the gas water heater is poor by increasing the number between smoke pipes.
According to an embodiment of the present invention, there is provided a gas water heater including: a housing; a combustion chamber located within the housing; the silencer is arranged between the inner wall surface of the outer shell and the outer wall surface of the combustion chamber and comprises a shell and a neck, wherein the shell is limited to form a silencing cavity, and the neck is arranged on the shell and communicated with the silencing cavity and the combustion chamber.
Optionally, the muffler is provided at a side of the combustion chamber.
Optionally, the housing at least partially conforms to an outer wall surface of the combustion chamber.
Optionally, the gas water heater further comprises a heat exchanger, the heat exchanger is arranged above the combustion chamber and is positioned in the shell; the shell comprises a first shell section and a second shell section which are connected, the first shell section is arranged between the combustion chamber and the shell, and the second shell section is arranged between the heat exchanger and the shell.
Optionally, the gas water heater further comprises: the water pipe is arranged on the surface of the heat exchanger, the shell is provided with an avoiding groove, and at least part of the water pipe is positioned in the avoiding groove.
Optionally, the neck is at least partially located within the sound-attenuating cavity; alternatively, the neck is entirely located outside the anechoic chamber.
Optionally, an anechoic chamber volume V0(ii) a The cross-sectional area A of the neck part and the total length L of the neck part satisfy the following formula:
|f-fH|≤0.1*(P0/P)*f，
wherein: lq + λ d
f is the central frequency of the thermoacoustic oscillation of the gas water heater, fHIs the characteristic frequency of the silencer, P is the amplitude of the sound pressure pulsation of the gas water heater, P0Atmospheric pressure, c the local sound velocity, Leq the effective length of the neck, λ the correction factor, d the diameter of the neck.
Optionally, the muffler further comprises: the partition plate is arranged in the silencing cavity and divides the silencing cavity into a plurality of sub-silencing cavities, the number of the necks is larger than or equal to that of the sub-silencing cavities, each sub-silencing cavity corresponds to at least one neck, each sub-silencing cavity is communicated with the combustion chamber through the necks corresponding to the sub-silencing cavities, each sub-silencing cavity and the necks corresponding to the sub-silencing cavities form sub-silencers, and at least two sub-silencers have different characteristic frequencies.
Optionally, the muffler further comprises: the spiral plate is arranged in the silencing cavity, and the neck part is arranged corresponding to the innermost ring of the spiral plate.
Optionally, the muffler further comprises: the elastic plate is arranged in the silencing cavity.
The gas water heater provided by the embodiment of the disclosure can realize the following technical effects:
the silencing cavity and the neck jointly form a Helmholtz resonance silencer. The noise of combustion chamber department is the biggest, locate between shell and the combustion chamber with helmholtz resonance silencer, the incident sound wave that gets into the neck from the combustion chamber consumes most energy at the in-process of making a round trip to pass in and out the neck, thereby play and restrain the thermoacoustic oscillation, the effect of noise reduction, noise cancelling effect is good, moreover because helmholtz resonance silencer does not locate the tobacco pipe, can not increase the volume of tobacco pipe, thereby can not increase the cost of tobacco pipe and can not influence the pleasing to the eye of tobacco pipe.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
FIG. 1 is a schematic structural view of a Helmholtz resonance silencer according to an embodiment of the present disclosure with a portion of the shell removed;
fig. 2 is a schematic structural diagram of a helmholtz resonance silencer according to an embodiment of the present disclosure;
FIG. 3 is a cross-sectional structural schematic view of another Helmholtz resonance muffler provided by the embodiments of the present disclosure;
FIG. 4 is a schematic view of a still further Helmholtz resonance silencer according to an embodiment of the present disclosure with a portion of the housing removed;
FIG. 5 is a cross-sectional structural schematic view of the Helmholtz resonance damper shown in FIG. 4;
FIG. 6 is a schematic view of a still further Helmholtz resonance silencer according to an embodiment of the present disclosure with a portion of the housing removed;
fig. 7 is a schematic structural diagram of a gas water heater with a shell removed according to an embodiment of the present disclosure.
Reference numerals:
100. a muffler; 10. an anechoic chamber; 20. a neck portion; 30. a partition plate; 40. a sub-anechoic chamber; 50. a sub-muffler; 60. an elastic plate; 70. a spiral plate; 80. a housing; 801. a first housing section; 802. a second housing section; 802. an avoidance groove; 90. a gas water heater; 901. a combustion chamber; 902. a smoke pipe; 903. a smoke collecting hood; 904. a heat exchanger; 905. a water pipe.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.
In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.
The term "plurality" means two or more unless otherwise specified.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.
Referring to fig. 7, an embodiment of the present disclosure provides a gas water heater 90. The gas water heater 90 comprises a shell, the shell defines a containing cavity, the gas water heater 90 further comprises a burner, a combustion chamber 901, a heat exchanger 904, a smoke collecting hood 903 and a smoke pipe 902, the burner, the combustion chamber 901 and the smoke collecting hood 903 are located in the containing cavity, the top end of the burner is the combustion chamber 901, the heat exchanger 904 is arranged above the combustion chamber 901, the smoke collecting hood 903 is arranged above the heat exchanger 904, a smoke exhaust port is formed in the top end of the smoke collecting hood 903, the smoke pipe 902 is connected to the smoke exhaust port and at least partially located outside the containing cavity, and the smoke pipe 902 is used for exhausting smoke.
The muffler 100 is disposed between an inner wall surface of the outer shell and an outer wall surface of the combustion chamber 901, as shown in fig. 1 and 2, the muffler 100 includes a housing 80 and a neck 20, the housing 80 defines a muffling chamber 10, the neck 20 is disposed in the housing 80 and communicates the muffling chamber 10 and the combustion chamber 901, and the neck 20 and the muffling chamber 10 together form a helmholtz resonance muffler.
The shape and size of the housing 80 may be determined according to the desired design frequency of the helmholtz resonance muffler and/or according to the space in which the helmholtz resonance muffler is to be installed at a specific location (between the outer shell and the combustion chamber 901).
To reduce manufacturing costs, the housing 80 may be shaped as a rectangular parallelepiped, and it is understood that the housing 80 may be shaped in any other shape than a rectangular parallelepiped, such as a cylindrical shape.
The neck 20 is provided in the casing 80, and the neck 20 is inserted into the combustion chamber 901 for communicating the combustion chamber 901 with the muffling chamber 10.
The neck 20 is a hollow structure, one end of the hollow structure is communicated with the muffling cavity 10, and the other end of the hollow structure is communicated with the combustion chamber 901, so that the muffling cavity 10 is communicated with the combustion chamber 901. The sound waves of the combustion chamber 901 enter the muffling chamber 10 through the hollow structure.
The natural frequency of the helmholtz resonance muffler can be influenced by the length of the neck 20, the transverse cross-sectional area and the volume of the muffling cavity 10, and when the helmholtz resonance muffler is actually used, the length of the neck 20, the transverse cross-sectional area and the volume of the muffling cavity 10 can be flexibly designed according to the natural frequency required by the helmholtz resonance muffler.
Specifically, helmholtzThe key parameter of the resonant silencer is mainly the volume V of the silencing cavity 100(ii) a Neck 20 cross-sectional area A; and an effective length Leq of neck 20. Wherein the effective length Leq of the neck 20 is related to the total length L of the neck 20, the diameter d of the neck 20 and the correction factor λ (generally 0.3-0.5).
After the parameters are determined, the characteristic frequency f of the Helmholtz resonance silencerHCan be calculated by the following formula, wherein c in the formula is the local sound velocity. Wherein:
Leq＝L+λd
the neck 20 connects the combustion chamber 901 and the muffling cavity 10, and when the frequency of the incident sound wave from the combustion chamber 901 is the same as the natural frequency of the helmholtz resonance muffler, the air in the muffling cavity 10 resonates, so that the sound wave energy can be dissipated by the friction of the air, and the muffling is realized.
|f-fH|≤0.1*(P0/P)*f。
f is the center frequency of the thermoacoustic oscillation of the gas water heater 90, f and fHIs less than or equal to 0.1 (P)0P) × f, so that the muffler 100 can absorb noise generated from the gas water heater 90 well.
P0The amplitude of the sound pressure pulsation of the gas water heater 90 is an amount representing the magnitude of the thermoacoustic oscillation or oscillation noise, and is noise generated by the combustion of the gas in the combustion chamber 901 and the coupling of the flow passages of the gas water heater 90, wherein the flow passages of the gas water heater 90 include the combustion chamber 901, the smoke collection hood 903 and the smoke flow path in the smoke pipe 902.
In one embodiment, the characteristic frequency of the muffler 100 is close to the frequency of the combustion oscillations of the gas water heater 90, and the frequency difference is less than 20Hz, so as to achieve better sound absorption.
In some embodiments, the design method of the characteristic frequency of the muffler 100 includes:
step S1, obtaining the relevant data of the thermoacoustic oscillation of the gas water heater 90 through a test mode;
step S2, designing a helmholtz resonance muffler suitable for the gas water heater 90 by combining a theoretical formula and numerical simulation;
step S3, determining a suitable characteristic frequency of the helmholtz resonance muffler through an experiment, and using the helmholtz resonance muffler under the characteristic frequency can cover thermoacoustic oscillations of the gas water heater 90 at different frequencies in which smoke pipes 902 with different lengths are installed and in a working environment;
in step S4, the characteristic frequency of the muffler 100 should be close to the frequency of the combustion oscillation of the gas water heater 90, and the frequency difference is less than or equal to 0.1 × (P)0P) × f to achieve better sound absorption effect;
step S5, verifying whether the designed helmholtz resonance muffler is valid by using COMSOL, testing the effect of the designed helmholtz resonance muffler by using a test, if valid, ending the design, and if invalid, returning to step S3.
Optionally, the muffler 100 is provided at the side of the combustion chamber 901.
Along the up-down direction, the gas water heater 90 is compact in structure. The muffler 100 is disposed on the side of the combustion chamber 901, so that the structure of the gas water heater 90 in the vertical direction is not affected, for example, the arrangement of the combustion chamber 901 and the lower burner is not affected, and the arrangement of the combustion chamber 901 and the upper heat exchanger 904 is not affected. And the space on the side of the combustion chamber 901 can be well utilized.
As shown in fig. 7, the muffler 100 is disposed on the left side of the combustion chamber 901, it is understood that the muffler 100 may be disposed on any side of the combustion chamber 901, such as the right side, the front side, or the rear side.
Optionally, as shown in fig. 7, at least a portion of the casing 80 is attached to an outer wall surface of the combustion chamber 901, in other words, a distance between at least a portion of the casing 80 and the outer wall surface of the combustion chamber 901 is zero, so that the distance between the casing 80 and the outer wall surface of the combustion chamber 901 can be reduced, and thus, under the condition that the shape and the size of the muffling chamber 10 are fixed, the volume of the housing can be reduced, and further, the volume occupied by the gas water heater 90 is reduced, and the cost of the gas water heater 90 is reduced.
Because the temperature at the combustion chamber 901 is high, the shell 80 and the neck 20 can be made of high temperature resistant materials, so that the shell 80 and the neck 20 are prevented from being damaged by high temperature.
In order to increase the area of contact between the casing 80 and the outer wall surface of the combustion chamber 901, the shape of the portion of the casing 80 corresponding to the combustion chamber 901 is the same as the shape of the outer wall surface of the combustion chamber 901, and for example, if the portion of the combustion chamber 901 corresponding to the casing 80 is flat, the portion of the casing 80 corresponding to the flat surface of the combustion chamber 901 is also flat.
Optionally, as shown in fig. 7, the gas water heater 90 further includes a heat exchanger 904, the heat exchanger 904 is disposed above the combustion chamber 901 and located in the casing; the casing 80 comprises a first casing section 801 and a second casing section 802 connected, the first casing section 801 being arranged between the combustion chamber 901 and the outer casing, the second casing section 802 being arranged between the heat exchanger 904 and the outer casing.
The casing 80 comprises a first casing section 801 corresponding to the combustion chamber 901 and a second casing section 802 corresponding to the heat exchanger 904, and the heat exchanger 904 and the combustion chamber 901 are sequentially arranged along the direction from top to bottom, so that the second casing section 802 and the first casing section 801 are sequentially arranged along the direction from top to bottom, the length of the casing 80 in the vertical direction can be prolonged, the volume of the muffling cavity 10 can be increased on one hand, and on the other hand, the space between the casing 80 and the combustion chamber 901 and the space between the casing 80 and the heat exchanger 904 can be better utilized.
The neck 20 is provided in the first casing section 801 at the surface of the first casing section 801 facing the combustion chamber 901.
Optionally, as shown in fig. 7, the gas water heater 90 further includes a water pipe 905, and the water pipe 905 is disposed on the surface of the heat exchanger 904.
In order to improve the heat exchange efficiency between the water pipe 905 and the heat exchanger 904, the water pipe 905 is wound on the surface of the heat exchanger 904. Cold water is connected to one end of the water pipe 905, the cold water exchanges heat with the heat exchanger 904 in the process of flowing through the water pipe 905, the water temperature in the water pipe 905 is increased, and hot water with the increased water temperature flows out from the other end of the water pipe 905 to provide hot water for a user.
The outer surface of the housing 80 is provided with an escape groove 803, and the water pipe 905 is partially positioned in the escape groove 803.
Therefore, on the premise of ensuring the size of the shell 80, the interference between the water pipe 905 and the shell 80 can be avoided. So that the space between the heat exchanger 904 and the outer shell can be utilized as much as possible, increasing the volume of the housing 80.
In a specific embodiment, as shown in fig. 1 and 2, the neck 20 is at least partially located in the muffling chamber 10, in other words, the neck 20 can be located entirely in the muffling chamber 10, partially outside the muffling chamber 10, and partially outside the muffling chamber 10, either entirely in the combustion chamber 901 or partially in the combustion chamber 901.
In another specific embodiment, the neck 20 is located entirely outside the muffling chamber 10, and the part of the neck 20 located outside the muffling chamber 10 can be located entirely inside the combustion chamber 901 or partially inside the combustion chamber 901.
The neck 20 may be cylindrical or non-cylindrical.
Optionally, as shown in fig. 3, the muffler 100 further includes a partition 30, the partition 30 is disposed in the muffling chamber 10 to divide the muffling chamber 10 into a plurality of sub-muffling chambers 40, the number of the necks 20 is greater than or equal to the number of the sub-muffling chambers 40, each sub-muffling chamber 40 corresponds to at least one neck 20, and each sub-muffling chamber 40 is communicated with the combustion chamber 901 through the neck 20 corresponding to the sub-muffling chamber 40.
The partition plate 30 divides the muffling cavity 10 into a plurality of sub-muffling cavities 40, each sub-muffling cavity 40 corresponds to at least one neck portion 20, the neck portion 20 communicates the sub-muffling cavity 40 communicated with the neck portion 20 with the combustion chamber 901, so as to communicate the sub-muffling cavity 40 with the combustion chamber 901, each sub-muffling cavity 40 and the communicated neck portion 20 of the sub-muffling cavity 40 (and the neck portion 20 corresponding to the sub-muffling cavity 40) jointly form a sub-muffler 50, and each sub-muffler 50 is a helmholtz resonance muffler, that is, the partition plate 30 divides the muffler 100 into a plurality of sub-muffling cavities 50.
Different users often use different lengths of the flue tube 902 when installing the gas water heater 90, which results in a range of variation in the characteristic frequency of the flow path of the gas water heater 90, and thermoacoustic oscillations often occur in the characteristic frequency of the flow path of the gas water heater 90. Thus, different smoke tubes 902 used by users during installation may cause thermoacoustic oscillations to occur at different characteristic frequencies.
The maximum damping characteristics of the muffler 100 are achieved at the design frequency of the muffler 100, which may also be referred to as the natural frequency, the eigenfrequency, or the eigenfrequency.
At least two of the plurality of sub-mufflers 50 have different design frequencies, so that the thermo-acoustic oscillation frequency range can be as large as possible, and thus when the smoke pipe 902 has different lengths, the gas water heater 90 with the smoke pipes 902 having different lengths can have a good muffling effect.
Optionally, as shown in fig. 6, the muffler 100 further includes a spiral plate 70, the spiral plate 70 is disposed in the muffling chamber 10, and the neck 20 is disposed corresponding to the innermost circumference of the spiral plate 70.
The arrangement of the spiral plate 70 complicates the interior of the anechoic chamber 10. Taking the muffling chamber 10 as a rectangular parallelepiped, the sound waves entering the muffling chamber 10 from the neck 20 are reflected only between six walls of the rectangular parallelepiped before the partition plate 30 is disposed, and thus energy is consumed. After the spiral plate 70 is arranged, sound waves can be reflected at the spiral plate 70 except the reflection between six wall surfaces of the cuboid, so that the energy of the sound waves is further consumed, and the sound absorption performance of the Helmholtz resonance silencer is enhanced.
Compare like this with the same volume, do not set up the helmholtz resonance silencer of helical plate 70, helmholtz resonance silencer in this application has better sound absorption energy-absorbing. Thus, under the condition of the same sound absorption performance, the Helmholtz resonance silencer can have smaller volume, so that the volume of the gas water heater 90 can be reduced.
The spiral plate 70 is arranged, on one hand, in the limited space of the anechoic chamber 10, the spiral plate 70 can enable the sound waves incident from the neck 20 to be reflected between the wall surfaces of the spiral plate 70 in sequence from inside to outside, the action between the sound waves and the spiral plate 70 is increased, and therefore the consumption of sound wave energy is enhanced, wherein the direction close to the inner circle of the spiral plate 70 is inner, and the direction far away from the inner circle of the spiral plate 70 is outer; on the other hand, the spiral shape is easy to set, and the manufacturing cost of the Helmholtz resonance silencer can be reduced.
Alternatively, neck 20 is disposed corresponding to the innermost turn of spiral plate 70.
When the neck 20 is at least partially inserted into the anechoic chamber 10, the neck 20 is inserted into the space surrounded by the innermost turn of the spiral plate 70.
When the neck 20 is located entirely outside the muffling chamber 10, the neck 20 is disposed corresponding to the innermost circle of the spiral plate 70, which means that when the neck 20 extends along its length direction to be inserted into the muffling chamber 10, the neck 20 is inserted into the space surrounded by the innermost circle of the spiral plate 70.
When the partition plate 30 is disposed in the muffling chamber 10 to divide the muffling chamber 10 into a plurality of sub-muffling chambers 40, so that the muffler 100 forms a plurality of sub-mufflers 50, a spiral plate 70 may be disposed in each sub-muffling chamber 40.
Optionally, as shown in fig. 4 and 5, the muffler 100 further includes an elastic plate 60, and the elastic plate 60 is disposed in the muffling chamber 10.
The elastic plate 60 is arranged in the anechoic chamber 10, sound waves incident from the neck 20 act on the elastic plate 60 after entering the anechoic chamber 10, and the elastic plate 60 is driven to generate elastic deformation through the vibration of the incident sound waves, so that more energy of the incident sound waves is consumed, and a better sound absorption effect is achieved. Like this under same sound absorption effect, can reduce the volume in anechoic chamber 10 after setting up elastic plate 60 to can reduce the manufacturing cost of helmholtz resonance silencer on the one hand, on the other hand enlarges the range of application of helmholtz resonance silencer, improves helmholtz resonance silencer's market competition.
When the partition plate 30 is disposed in the muffling chamber 10 to divide the muffling chamber 10 into a plurality of sub-muffling chambers 40, so that the muffler 100 forms a plurality of sub-mufflers 50, an elastic plate 60 may be disposed in each sub-muffling chamber 40.
The elastic plate 60 divides the muffling chamber 10 into several regions, which communicate with each other.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A gas water heater, comprising:
a housing;
a combustion chamber located within the housing;
the silencer is arranged between the inner wall surface of the outer shell and the outer wall surface of the combustion chamber and comprises a shell and a neck, wherein the shell is limited to form a silencing cavity, and the neck is arranged on the shell and communicated with the silencing cavity and the combustion chamber.
2. The gas water heater of claim 1,
the muffler is arranged on the side surface of the combustion chamber.
3. The gas water heater of claim 1,
the housing is at least partially attached to an outer wall surface of the combustion chamber.
4. The gas water heater of claim 1, further comprising:
the heat exchanger is arranged above the combustion chamber and is positioned in the shell;
the shell comprises a first shell section and a second shell section which are connected, the first shell section is arranged between the combustion chamber and the shell, and the second shell section is arranged between the heat exchanger and the shell.
5. The gas water heater of claim 4, further comprising:
the water pipe is arranged on the surface of the heat exchanger, the shell is provided with an avoiding groove, and at least part of the water pipe is positioned in the avoiding groove.
6. The gas water heater of claim 1,
the neck is at least partially located within the sound attenuation chamber; alternatively, the neck is entirely located outside the anechoic chamber.
7. The gas water heater of claim 1,
volume V of the anechoic chamber0(ii) a The cross-sectional area A of the neck portion and the total length L of the neck portion satisfy the following formula:
|f-fH|≤0.1*(P0/P)*f，
wherein: leq is L + λ d,
f is the central frequency of the thermoacoustic oscillation of the gas water heater, fHIs the characteristic frequency of the muffler, P is the amplitude of the sound pressure pulsation of the gas water heater, P0Atmospheric pressure, c the local sound velocity, Leq the effective length of the neck, λ the correction factor, d the diameter of the neck.
8. The gas water heater of any one of claims 1 to 7, wherein the muffler further comprises:
the partition plate is arranged in the silencing cavity and divides the silencing cavity into a plurality of sub-silencing cavities, the number of the necks is larger than or equal to that of the sub-silencing cavities, each sub-silencing cavity corresponds to at least one neck, each sub-silencing cavity is communicated with the combustion chamber through the necks corresponding to the sub-silencing cavities, each sub-silencing cavity and the necks corresponding to the sub-silencing cavities form sub-silencers, and at least two sub-silencers have different characteristic frequencies.
9. The gas water heater of any one of claims 1 to 7, wherein the muffler further comprises:
the spiral plate is arranged in the silencing cavity, and the neck part is arranged corresponding to the innermost ring of the spiral plate.
10. The gas water heater of any one of claims 1 to 7, wherein the muffler further comprises:
the elastic plate is arranged in the silencing cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122326582.0U CN216204342U (en) | 2021-09-24 | 2021-09-24 | Gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122326582.0U CN216204342U (en) | 2021-09-24 | 2021-09-24 | Gas water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216204342U true CN216204342U (en) | 2022-04-05 |
Family
ID=80923127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122326582.0U Active CN216204342U (en) | 2021-09-24 | 2021-09-24 | Gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216204342U (en) |
-
2021
- 2021-09-24 CN CN202122326582.0U patent/CN216204342U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7389852B2 (en) | Integrated heat exchanger and muffler unit | |
| CN106468197B (en) | A kind of wideband noise-reducing silencer | |
| CN216204342U (en) | Gas water heater | |
| US20160376952A1 (en) | Exhaust resonator for a two-stroke engine for use in a motorized float | |
| CN216409319U (en) | Helmholtz resonance silencer and gas water heater | |
| CN210033567U (en) | Composite large-displacement diesel engine exhaust silencer | |
| CN209875570U (en) | Noise reduction device and gas water heater | |
| CN216204340U (en) | Exhaust fume collecting hood assembly and gas water heater | |
| CN216204339U (en) | Exhaust fume collecting hood and gas water heater | |
| CN111288655A (en) | Noise reduction device and gas water heater | |
| CN211116187U (en) | Silencer mechanism | |
| CN209819536U (en) | Full premix combustor and full premix boiler | |
| CN112233637B (en) | Noise reduction device and gas water heater | |
| CN210832564U (en) | Shell and water heater | |
| CN215486223U (en) | Compact type super-strong noise reduction silencer | |
| CN114763754A (en) | Silencer | |
| JP2009209854A (en) | Muffler | |
| CN216716592U (en) | Sound lining, gas water heater | |
| CN215486222U (en) | Silencer for diesel engine | |
| CN219388040U (en) | Noise elimination device and vehicle | |
| CN216412670U (en) | Helmholtz resonance silencer and gas water heater | |
| CN218542376U (en) | Automobile muffler assembly with winding drum structure | |
| CN217761118U (en) | Silencer and exhaust system | |
| CN218598327U (en) | Silencer, compressor assembly and household appliance | |
| CN215183065U (en) | Helmholtz resonator, noise damping device and electromechanical device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |