CN217209812U - Heat insulation plate structure, heat insulation plate assembly and gas water heating equipment - Google Patents

Abstract

The application relates to a heat insulation plate structure, a heat insulation plate assembly and a gas water heating device. A heat shield structure comprising: the plate body is provided with a first surface and a second surface which are arranged oppositely; the sound absorption main cavities are arranged on the first surface of the plate body; the sound-absorbing main cavity is provided with an open end and a closed end which are oppositely arranged in the direction from the first surface to the second surface, and the radial dimension of the open end is larger than that of the closed end; the closed end is provided with a sound-absorbing wedge extending towards one side far away from the open end, and a sound-absorbing auxiliary cavity communicated with the sound-absorbing main cavity is formed on the sound-absorbing wedge, so that noise sound waves conducted in the sound-absorbing main cavity can be conducted to the sound-absorbing auxiliary cavity. The sound absorption main cavity can be utilized to primarily absorb a part of sound energy, and the corresponding sound absorption auxiliary cavity is utilized to further absorb the sound energy, so that the effect of weakening noise step by step is achieved, and the use experience of a user is improved.

Description

Heat insulation plate structure, heat insulation plate assembly and gas water heating equipment

Technical Field

The application relates to a gas hot water system technical field especially relates to a heat-insulating board structure, heat-insulating board subassembly and gas hot water system.

Background

The gas water heater is a thermal device for heating by using heat generated by gas combustion, and includes a water heater, a heating stove, and the like. However, the combustion chamber assembly of the conventional gas water heating device generates combustion noise during use, which affects the experience of the user.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a heat insulation plate structure, a heat insulation plate assembly and a gas water heater, aiming at the problem that the combustion noise generated during the use of the conventional gas water heater affects the user experience.

According to an aspect of the present application, there is provided a heat shield structure including:

the plate body is provided with a first surface and a second surface which are arranged oppositely; and

a plurality of sound-absorbing main cavities arranged on the first surface of the plate body;

wherein, in a direction from the first surface to the second surface, the sound-absorbing main chamber has an open end and a closed end which are oppositely arranged, and the radial dimension of the open end is larger than that of the closed end;

the blind end is equipped with and keeps away from the branch is cut to sound of inhaling that open end one side extends, inhale be formed with on the branch with inhale the vice chamber of inhaling that the sound main cavity is linked together, so that inhale the noise sound wave of sound conduction in the main cavity and can conduct extremely inhale the vice chamber of sound.

In one embodiment, the radial dimension of the end of the sound-absorbing auxiliary cavity close to the open end is larger than the radial dimension of the end of the sound-absorbing auxiliary cavity far away from the open end.

In one embodiment, the sound absorbing main chamber further has a first sound absorbing sidewall connected between the open end and the closed end to allow noise sound waves conducted to one side of the first sound absorbing sidewall to be reflected to the other side of the first sound absorbing sidewall;

the sound-absorbing auxiliary cavity is provided with a second sound-absorbing side wall positioned on one side of the first sound-absorbing side wall far away from the open end;

an included angle between the first sound absorption side wall and the central axis of the sound absorption main cavity is alpha, and an included angle between the second sound absorption side wall and the central axis of the sound absorption main cavity is beta;

wherein α is not more than β.

In one embodiment, the closed end is provided with a plurality of the sound absorbing wedges.

In one embodiment, the sound-absorbing main cavities are arranged at intervals along a first direction, and the sound-absorbing main cavities extend lengthwise along a second direction, and the first direction and the second direction are perpendicular to each other and are parallel to the first surface of the plate body; and/or

The sound-absorbing main cavities are uniformly distributed on the first surface of the plate body.

According to another aspect of the present application, there is provided a heat shield assembly comprising a first heat shield panel and a second heat shield panel, at least one of the first heat shield panel and the second heat shield panel comprising the heat shield panel structure described above.

In one embodiment, the first and second insulating panels each comprise an insulating panel structure as described above;

the first surfaces of the first heat insulation board and the second heat insulation board are oppositely arranged, and one sides of the first heat insulation board and one side of the second heat insulation board facing each other are mutually connected, so that a sound wave oscillation cavity communicated with the sound absorption main cavity is defined between the first heat insulation board and the second heat insulation board;

the plate body of the second heat insulation plate is also provided with a plurality of sound guide through holes communicated with the sound wave oscillation cavity, and the sound guide through holes on the second heat insulation plate are arranged in a staggered manner with the adjacent sound absorption main cavity;

the sound-guiding through-hole is configured to allow noise sound waves conducted from the sound-guiding through-hole to pass through the sound wave oscillating chamber and to be conducted into the sound-absorbing main chamber of the first heat insulating plate and/or the sound-absorbing main chamber of the second heat insulating plate.

In one embodiment, the sound guide through hole faces to a part, located between two adjacent sound absorption main cavities, of the first surface of the first heat insulation plate;

the main sound-absorbing chamber of the first insulating panel and the main sound-absorbing chamber of the second insulating panel are disposed opposite to each other.

In one embodiment, the sound guide through hole faces the sound absorption main cavity of the first heat insulation plate.

In one embodiment, the radial dimension of the end of the sound guide through hole far away from the first heat insulation plate is larger than the radial dimension of the end of the sound guide through hole close to the first heat insulation plate.

In one embodiment, the radial dimension of the main sound absorbing cavity of the second heat insulation board is smaller than the radial dimension of the main sound absorbing cavity of the first heat insulation board.

According to another aspect of the application, the gas-fired water heating equipment comprises a combustion chamber assembly, wherein the combustion chamber assembly comprises a combustion chamber enclosing plate, and the combustion chamber enclosing plate comprises the heat insulation plate structure; or

The above-described insulation panel assembly.

Above-mentioned thermal-insulated plate structure, thermal-insulated plate subassembly and gas hot water equipment, according to huygens' principle, when the noise sound wave incides the first surface of plate body, partly forms the reflection on the first surface of plate body, another part then conducts to the inside of inhaling the sound main cavity, arouse to inhale the vibration of the inside air of sound main cavity and take place the friction with the wall of inhaling the sound main cavity, because viscosity and heat conduction effect, can turn into the acoustic energy heat energy and consume, and the noise sound wave can be refracted repeatedly on the wall of inhaling the sound main cavity, make acoustic energy constantly converted and consumed, so can reach the effect of inhaling the sound and making an uproar repeatedly. In addition, still can conduct to inhaling the vice intracavity of sound at the noise sound wave of inhaling sound main cavity internal conduction, can inhale the vice intracavity conduction of sound, make acoustic energy constantly converted and consumed, so, can utilize to inhale a sound main cavity and tentatively absorb some acoustic energy to utilize the vice intracavity of inhaling sound that corresponds to further absorb acoustic energy, reach the effect that weakens the noise step by step, experience with the use that improves the user and feel.

Drawings

FIG. 1 shows a schematic structural view of an insulation panel structure in an embodiment of the present application;

FIG. 2 shows a side view of an insulation panel structure in a first embodiment of the present application;

FIG. 3 shows an enlarged schematic view at A of FIG. 2;

FIG. 4 illustrates a schematic structural view of a combustor shroud in an embodiment of the present application;

FIG. 5 shows a schematic structural diagram of a gas-fired water heating apparatus in an embodiment of the present application;

FIG. 6 shows a side view of an insulation panel structure in a second embodiment of the present application;

FIG. 7 shows an enlarged schematic view at B of FIG. 6;

FIG. 8 is a partial structural view showing a heat shield structure in a third embodiment of the present application;

FIG. 9 shows a schematic structural view of an insulation panel structure in a fourth embodiment of the present application;

FIG. 10 shows a side view of an insulation panel structure in a fourth embodiment of the present application;

FIG. 11 shows an enlarged schematic view at C of FIG. 10;

FIG. 12 illustrates a schematic structural view of an insulation panel assembly in an embodiment of the present application;

FIG. 13 illustrates a side view of an insulation panel assembly in an embodiment of the present application;

FIG. 14 shows an enlarged schematic view at D of FIG. 13;

FIG. 15 illustrates a side view of an insulation panel assembly in another embodiment of the present application;

fig. 16 shows an enlarged schematic view at E of fig. 15.

In the figure: 1. a gas fired water heating apparatus; 10. a combustion chamber coaming; 11. a base plate; 12. a side plate; 13. a cover plate; 14. the inner cavity of the combustion chamber; 100. a heat insulation panel structure; 110. a plate body; a. a first surface; b. a second surface; 111. a sound-absorbing main cavity; 1111. an open end; 1112. a closed end; 1113. a first sound absorbing sidewall; 112. sound absorption and splitting; 1121. the sound absorption auxiliary cavity; 1122. a second sound absorbing sidewall; 113. a sonic oscillation cavity; 114. a sound guide through hole; 115. a connecting portion; 20. a burner; 30. exchanging the exchanger; 40. an extractor hood assembly.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Fig. 1 shows a schematic view of a heat shield structure 100 according to an embodiment of the present application.

In some embodiments, referring to fig. 1 in combination with fig. 2 and 3, an insulation board structure 100 according to an embodiment of the present invention includes a board body 110 and a plurality of sound-absorbing main cavities 111.

The board body 110 has a first surface a and a second surface b which are opposite to each other, a plurality of sound-absorbing main cavities 111 are disposed on the first surface a of the board body 110, and the sound-absorbing main cavities 111 have an open end 1111 and a closed end 1112 which are opposite to each other in a direction from the first surface a to the second surface b. This heat insulating board structure 100 can be used in the combustion chamber assembly, the combustion chamber bounding wall 10 of combustion chamber assembly can include this heat insulating board structure 100, combustion chamber bounding wall 10 defines combustion chamber inner chamber 14, so, the noise sound wave is conducted to the plate body 110 of heat insulating board structure 100 by combustion chamber inner chamber 14, in the uncovered entering sound absorption main cavity 111 of opening end 1111, and repeat the refraction on the wall of sound absorption main cavity 111, because the radial dimension of opening end 1111 is greater than the radial dimension of closed end 1112, can make the noise sound wave repeat the refraction on the wall of sound absorption main cavity 111 better, in order to guide the noise sound wave to propagate in the direction from opening end 1111 to closed end 1112, so can absorb most acoustic energy with the help of the wall of sound absorption main cavity 111, the acoustic energy of absorption can change into heat energy, and then the noise can be reduced.

The closed end 1112 extends to a side away from the open end 1111 to form a sound absorption wedge 112, and a sound absorption sub-cavity 1121 communicating with the sound absorption main cavity 111 is formed on the sound absorption wedge 112, so that noise sound waves conducted in the sound absorption main cavity 111 can be conducted to the sound absorption sub-cavity 1121. According to the huygens principle, when the noise sound wave is incident to the first surface a of the plate body 110, a part of the noise sound wave is reflected on the first surface a of the plate body 110, and the other part of the noise sound wave is transmitted to the inside of the sound absorption main cavity 111, so that the vibration of the air inside the sound absorption main cavity 111 is caused and the friction is generated with the wall surface of the sound absorption main cavity 111, due to the viscosity and the heat conduction effect, the sound energy can be converted into heat energy to be consumed, and the noise sound wave can be repeatedly refracted on the wall surface of the sound absorption main cavity 111, so that the sound energy is continuously converted and consumed, and the effects of sound absorption and noise reduction can be repeatedly achieved. In addition, the noise sound waves conducted in the sound absorption main cavity 111 can also be conducted to the sound absorption auxiliary cavity 1121, and can be conducted in the sound absorption auxiliary cavity 1121, so that the sound energy is continuously converted and consumed, thus, a part of the sound energy can be initially absorbed by the sound absorption main cavity 111, the sound energy can be further absorbed by the corresponding sound absorption auxiliary cavity 1121, the effect of gradually weakening the noise is achieved, and the use experience of a user is improved.

In some embodiments, optionally, the radial dimension of the end of the sound-absorbing sub-cavity 1121 close to the open end 1111 is larger than the radial dimension of the end of the sound-absorbing sub-cavity 1121 far from the open end 1111, and similarly, the sound waves of noise can be better refracted repeatedly on the wall surface of the sound-absorbing sub-cavity 1121, so that the sound energy is continuously converted and consumed, the sound energy can be better absorbed by the sound-absorbing sub-cavity 1121, and the sound-absorbing and noise-reducing effects are better.

Optionally, the sound absorbing wedges 112 are triangular in shape to better refract the noise sound waves repeatedly at the wall surface of the sound absorbing sub-cavity 1121 to guide the noise sound waves to be conducted inside the sound absorbing sub-cavity 1121.

Alternatively, the plate body 110 is a heat-resistant plate, and the material of the plate body 110 includes an aluminum silicate fiberboard, vermiculite, and/or refractory ceramic, etc.

In some embodiments, referring to fig. 1 in combination with fig. 4 and 5, optionally, a gas-fired water heating apparatus 1 provided by an embodiment of the present application includes a combustion chamber assembly. The combustor assembly includes a combustor shroud 10, the combustor shroud 10 including the heat shield structure 100 described above.

Alternatively, referring to fig. 4, the combustion chamber enclosure 10 includes a bottom plate 11 and two side plates 12 disposed on opposite sides of the bottom plate 11, and the bottom plate 11 and the two side plates 12 each include the above-mentioned heat insulation plate structure 100 or the above-mentioned heat insulation plate assembly. Referring to fig. 5, the combustion chamber enclosure 10 further includes a cover plate 13 disposed opposite to the bottom plate 11, and the cover plate 13, the bottom plate 11 and the two side plates 12 enclose a combustion chamber inner cavity 14 with two open ends.

The bottom of combustion chamber bounding wall 10 is equipped with combustor 20, combustor 20 burning can produce the noise, the noise sound wave of formation can be conducted to the first surface an of the plate body 110 of heat insulating board structure 100 from combustion chamber inner chamber 14 on, the usable sound of inhaling main cavity 111 and inhaling the vice chamber 1121 effective absorption noise sound wave of sound, the separation noise is propagated outside gas hot water equipment 1 by a wide margin, effectively reduce the combustion noise, the silence effect of making an uproar falls in the reinforcing, the house use travelling comfort of gas hot water equipment 1 has been promoted.

In some embodiments, referring to fig. 3 in combination with fig. 6 and 7, the main sound-absorbing chamber 111 further has a first sound-absorbing sidewall 1113 connected between the open end 1111 and the closed end 1112, so that the noise waves transmitted to one side of the first sound-absorbing sidewall 1113 can be reflected to the other side of the first sound-absorbing sidewall 1113. In this way, the noise sound waves transmitted into the main sound-absorbing cavity 111 can be repeatedly refracted at the first sound-absorbing sidewall 1113 and continuously reflected from one side of the first sound-absorbing sidewall 1113 to the other side of the first sound-absorbing sidewall 1113, so as to guide the noise sound waves to be transmitted in the direction from the open end 1111 to the closed end 1112, so that the sound energy is continuously converted and consumed, and the sound-absorbing and noise-reducing effects can be achieved.

The sound-absorbing sub-cavity 1121 has a second sound-absorbing sidewall 1122 on the side of the first sound-absorbing sidewall 1113 away from the open end 1111, an included angle between the first sound-absorbing sidewall 1113 and the central axis of the sound-absorbing main cavity 111 is α, and an included angle between the second sound-absorbing sidewall 1122 and the central axis of the sound-absorbing main cavity 111 is β, where α is not greater than β. The noise sound waves propagated in the sound absorption main cavity 111 can be better conducted into the sound absorption sub-cavity 1121, and can be repeatedly refracted on the wall surface of the sound absorption sub-cavity 1121, so that the sound energy is further continuously converted and consumed, and the sound absorption and noise reduction effects are enhanced.

In particular, in the embodiment shown in fig. 3 and 8, α is smaller than β, which facilitates the conduction of noise sound waves from the sound-absorbing main cavity 111 to the sound-absorbing sub-cavity 1121, so that the sound energy is further converted and consumed to enhance the sound-absorbing and noise-reducing effects.

In the embodiment shown in fig. 6 and 7, α is equal to β, so that the noise sound waves are continuously propagated in the sound-absorbing main cavity 111 and the sound-absorbing sub-cavity 1121, so that the sound energy is further converted and consumed to enhance the sound-absorbing and noise-reducing effects.

Alternatively, the sound-absorbing main chamber 111 has an inverted cone shape in cross section in a direction parallel to the central axis of the sound-absorbing main chamber 111.

Alternatively, α is equal to β, and the side of the first sound-absorbing sidewall 1113 away from the open end 1111 is connected to the second sound-absorbing sidewall 1122, it can be understood that the first sound-absorbing sidewall 1113 and the second sound-absorbing sidewall 1122 are connected to form a continuous inclined plane with the same inclination angle, and the whole body formed by connecting the sound-absorbing main cavity 111 and the sound-absorbing auxiliary cavity 1121 has an inverted triangle shape in cross section along the direction parallel to the central axis of the sound-absorbing main cavity 111, which can improve the convenience of mold manufacturing.

In some embodiments, referring to fig. 8, the closed end 1112 is provided with a plurality of sound absorbing wedges 112, and the plurality of sound absorbing wedges 112 are provided to further facilitate the absorption and conversion of the noise waves, so as to enhance the sound absorbing and noise reducing effects.

In some embodiments, referring to FIG. 1, a plurality of sound absorbing main chambers 111 are oriented in a first direction F ₁ Arranged at intervals, and the sound-absorbing main cavity 111 is arranged along the second direction F ₂ Longitudinally extending in a first direction F ₁ And a second direction F ₂ Perpendicular to each other and parallel to the first surface a of the plate body 110. On the one hand, the contact area between the noise sound wave and the sound absorption main cavity 111 can be increased, and the sound absorption and noise reduction effects can be improved, and on the other hand, the sound absorption main cavities 111 are uniformly distributed on the first surface a of the plate body 110, so that the sound energy of the noise can be uniformly absorbed, and the sound absorption and noise reduction effects can also be improved.

In some embodiments, referring to fig. 3 and 7, the sound absorbing wedges 112 are configured to extend from the closed end 1112 toward a side away from the open end 1111.

In other embodiments, referring to FIG. 8, a plurality of sound absorbing wedges 112 extend from the closed end 1112 toward a side away from the open end 1111.

Specifically, in the embodiment shown in fig. 1, the first direction is a length direction of the plate body 110, and the second direction is a width direction of the plate body 110.

In particular to the embodiment shown in fig. 1-8, the main sound-absorbing cavity 111 is configured as a sound-absorbing groove formed in the panel body 110.

In the embodiment shown in fig. 3, the sound-absorbing main cavity 111 has a bar-shaped reverse cone shape.

Specifically, as shown in fig. 6 and 7, the sound-absorbing main cavity 111 is in the shape of a strip inverted triangle, and the brackets of two adjacent sound-absorbing main cavities 111 are connected with arc surfaces to guide noise sound waves outside the sound-absorbing main cavity 111 to be conducted into the sound-absorbing main cavity 111.

In other embodiments, referring to fig. 9, 10 and 11, optionally, the sound-absorbing main cavities 111 are uniformly disposed on the first surface a of the plate body 110, so as to uniformly absorb sound energy of noise and improve sound-absorbing and noise-reducing effects.

In the embodiment shown in fig. 9, 10 and 11, the sound-absorbing main chamber is configured as the sound-absorbing holes formed in the plate body 110, and the sound-absorbing holes are uniformly and densely distributed on the first surface a of the plate body 110.

Alternatively, the sound absorbing hole has an inverted cone or inverted triangle shape in a cross section in a direction parallel to the central axis of the sound absorbing main chamber 111.

In some embodiments, and optionally referring to fig. 12, 13 and 14, an insulation panel assembly according to an embodiment of the present application includes a first insulation panel and a second insulation panel, at least one of the first insulation panel and the second insulation panel including the insulation panel structure 100 described above.

In some embodiments, optionally, referring to fig. 12, 13 and 14, the first and second insulation panels each comprise the insulation panel structure 100 described above. The first surfaces a of the first and second heat insulating panels are oppositely disposed, and the sides of the first and second heat insulating panels facing each other are connected to each other to define a sound wave oscillating chamber 113 communicating with the sound-absorbing main chamber 111 between the first and second heat insulating panels. The plate body 110 of the second heat insulation plate is further provided with a plurality of sound guide through holes 114 communicated with the sound wave vibration cavity 113, the sound guide through holes 114 on the second heat insulation plate are arranged in a staggered manner with the adjacent sound absorption main cavity 111, and the sound guide through holes 114 are configured to enable the noise sound waves conducted from the sound guide through holes 114 to pass through the sound wave vibration cavity 113 and be conducted into the sound absorption main cavity 111 of the first heat insulation plate and/or the sound absorption main cavity 111 of the second heat insulation plate. So, the noise sound wave that outside afferent is refraction leading-in by leading sound through hole 114, subsequently get into sound wave oscillation chamber 113 and vibrate the refraction in sound wave oscillation chamber 113, the noise sound wave that gets into sound wave oscillation chamber 113 can be followed a plurality of angles and refracted, and then can be refracted on inhaling on sound main cavity 111 and the sound wedge 112 on the plate body 110 of first heat insulating board, and/or refract and inhale on sound main cavity 111 and the sound wedge 112 on the plate body 110 of second heat insulating board, so, can realize absorbing some sound energy in inhaling sound main cavity 111 tentatively, and further absorb sound energy on the sound wedge 112 that inhales that corresponds, reach the effect of weakening the noise step by step, experience the sense with the use that improves the user.

Optionally, referring to fig. 13, two ends of one side of the first heat insulation board facing the second heat insulation board are provided with connecting portions 115 extending towards the second heat insulation board, one sides of the first heat insulation board and the second heat insulation board facing each other are connected to each other through the connecting portions 115, and the first heat insulation board, the second heat insulation board and the connecting portions 115 at two ends enclose to form a sound wave oscillation cavity 113.

Alternatively, the connecting portion 115 is integrally formed with the first heat insulating plate, and the connecting portion 115 and the second heat insulating plate are connected together by bonding or other fixing means.

In some embodiments, referring to fig. 13 and 14, the sound guide through holes 114 face the portion of the first surface a of the first insulating board between two adjacent sound-absorbing main cavities 111, the sound-absorbing main cavity 111 of the first insulating board and the sound-absorbing main cavity 111 of the second insulating board are disposed opposite to each other, and in combination with the sound guide through holes 114 of the second insulating board and the adjacent sound-absorbing main cavities 111 are disposed alternately, it can be understood that the externally introduced noise sound wave is guided by the sound guiding through hole 114, then enters the sound wave oscillating cavity 113 and is oscillated and refracted in the sound wave oscillating cavity 113, the sound absorption main cavity 111 of the first heat insulation board and the sound absorption auxiliary cavity 1121 on the sound absorption splitting tip 112 can be utilized to form the effect of gradually weakening noise. The other part can be reflected into the sound-absorbing main cavity 111 of the second heat insulation board through the first surface a of the first heat insulation board, and the effect of gradually weakening the noise can also be achieved.

In other embodiments, referring to fig. 15 and 16, the sound guide through hole 114 faces the main sound-absorbing chamber 111 of the first heat insulation board. In this way, noise sound waves transmitted from the outside are refracted and guided by the sound guide through hole 114, then enter the sound wave oscillation cavity 113 and are oscillated and refracted in the sound wave oscillation cavity 113, a part of the noise sound waves can be transmitted into the sound absorption main cavity 111 of the first heat insulation board through the sound wave oscillation cavity 113, and the effect of gradually weakening the noise can be achieved by utilizing the sound absorption main cavity 111 of the first heat insulation board and the sound absorption auxiliary cavity 1121 on the sound absorption wedge 112. Another part of the noise wave can be reflected to the first surface a of the first heat insulation board and then reflected to the main sound absorption cavity 111 of the second heat insulation board from the first surface a of the first heat insulation board, so that the effect of attenuating the noise step by step can be achieved.

In some embodiments, referring to fig. 14 and 16, the radial dimension of the end of the sound guide through hole 114 far from the first heat insulation board is greater than the radial dimension of the end of the sound guide through hole 114 near the first heat insulation board, so that the noise sound waves can be better refracted repeatedly on the wall surface of the sound guide through hole 114, and the noise sound waves can be guided to be conducted from the sound guide through hole 114 to the sound absorption main chamber 111 of the first heat insulation board and/or the sound absorption main chamber 111 of the second heat insulation board, so as to achieve the effect of gradually attenuating the noise.

In the embodiment shown in fig. 14 and 16, the sound guide through hole 114 is a circular truncated cone-shaped hole which penetrates through the plate body 110 of the second heat insulation plate and has a gradually reduced diameter, so as to facilitate the refraction and conduction of the sound wave of noise.

Alternatively, the plurality of sound guide through holes 114 are uniformly distributed on the plate body 110 of the second insulation plate.

In some embodiments, referring to fig. 14 and 16, the radial dimension of the main acoustical cavity 111 of the second insulating board is smaller than the radial dimension of the main acoustical cavity 111 of the first insulating board. Such a layout is more reasonable, so that most of the noise sound waves are attenuated step by step through the sound-absorbing main cavity 111 and the sound-absorbing auxiliary cavity 1121 of the first heat insulating board, and a small part of the noise sound waves are attenuated step by step through the sound-absorbing main cavity 111 and the sound-absorbing auxiliary cavity 1121 of the second heat insulating board.

In some embodiments, referring to fig. 4 and 5 optionally, a gas-fired water heating apparatus 1 provided by an embodiment of the present application includes a combustion chamber assembly. The combustor assembly includes a combustor shroud 10, the combustor shroud 10 including the heat shield structure 100 described above or the heat shield assembly described above.

Optionally, the gas-fired water heating apparatus 1 further includes a burner 20 and a heat exchanger 30 disposed at opposite ends of the combustion chamber inner chamber 14, and the burner 20 and the heat exchanger 30 are respectively blocked at two end openings of the combustion chamber inner chamber 14. In this manner, the noise generated by the combustion of the burner 20 can be gradually attenuated by means of the heat insulating plate structure 100 of the combustion chamber surrounding plate 10 to improve the user experience.

Optionally, the gas water heating apparatus 1 further comprises an exhaust hood assembly 40 disposed on a side of the exchanger 30 away from the combustion chamber enclosure 10, and the flue gas in the combustion chamber inner cavity 14 can be exhausted out of the gas water heating apparatus 1 through the exhaust hood assembly 40.

Optionally, the cover sheet 13 may also include the insulation panel structure 100 described above or the insulation panel assembly described above.

Alternatively, the bottom plate 11 and the side plate 12, and the cover plate 13 and the side plate 12 may be connected by sheet metal flanges.

In some embodiments, the gas fired water heating apparatus 1 comprises a combustion enclosure 10, a burner 20 and a recuperator 30 and a fume hood assembly 40, wherein the combustion enclosure 10 comprises a base plate 11, a side plate 12 and a cover plate 13, the base plate 11, the side plate 12 and the cover plate 13 each comprising a heat shield assembly. In the heat insulation board assembly, the main sound absorbing cavity 111 of the board body 110 of the first heat insulation board is configured as a sound absorbing groove formed on the first surface a of the board body 110, the main sound absorbing cavity 111 of the board body 110 of the second heat insulation board is configured as a sound absorbing hole formed on the first surface a of the board body 110, and a plurality of sound absorbing wedges 112 are arranged on the sides of the sound absorbing groove and the sound absorbing hole away from each other. The plurality of sound absorbing holes are uniformly distributed on the first surface a of the plate body 110 of the second insulation plate, and the plurality of sound guiding through holes 114 are uniformly distributed on the second surface b of the plate body 110 of the second insulation plate.

It can be understood that the burner 20 of the gas water heating apparatus 1 generates noise during the combustion process, and according to huygens' principle, the generated noise sound wave can be incident to the second surface b of the second heat insulation plate, a part of the noise sound wave is reflected on the second surface b of the second heat insulation plate, and another part of the noise sound wave is transmitted into the sound guide through hole 114 of the second heat insulation plate, so as to cause the vibration of the air inside the sound guide through hole 114 and generate friction with the wall surface. Due to viscosity and heat conduction effects, acoustic energy is converted into heat energy and consumed. The part of noise sound wave can be repeatedly refracted on the wall surface of the sound guide through hole 114 on the second heat insulation board and is conducted into the sound wave oscillation cavity 113 from the sound guide through hole 114, the noise sound wave entering the sound wave oscillation cavity 113 can be transmitted along a plurality of angles, so that part of the noise sound wave can be reflected into the sound absorption main cavity 111 on the first heat insulation board, the sound absorption main cavity 111 and the sound absorption auxiliary cavity 1121 on the first heat insulation board can be used for realizing the effect of gradually weakening the noise, most sound energy is absorbed, the sound energy is converted into heat energy, and the noise can be obviously reduced. The other part of this noise sound wave can be refracted to inhaling on the second heat insulating board in the sound main cavity 111, also can realize weakening the effect of noise step by step, so, when the combustion chamber assembly including this heat insulating board subassembly was used, the inboard homoenergetic effective absorption noise sound wave all around of combustion chamber assembly, the noise that can the separation burning production by a wide margin propagates outside gas hot water equipment 1, effectively reduces the combustion noise, and the silence effect of making an uproar is fallen in the reinforcing, has promoted gas hot water equipment 1's house and has used the travelling comfort.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (12)

1. A heat shield structure, comprising:

a plate body (110) having a first surface (a) and a second surface (b) which are oppositely arranged; and

a plurality of sound-absorbing main cavities (111) provided on the first surface (a) of the plate body (110);

wherein, in a direction from the first surface (a) to the second surface (b), the sound-absorbing main chamber (111) has an open end (1111) and a closed end (1112) arranged oppositely, the open end (1111) having a radial dimension greater than the closed end (1112);

the closed end (1112) is provided with a sound absorption wedge (112) extending towards the side far away from the open end (1111), and a sound absorption auxiliary cavity (1121) communicated with the sound absorption main cavity (111) is formed on the sound absorption wedge (112), so that noise sound waves conducted in the sound absorption main cavity (111) can be conducted to the sound absorption auxiliary cavity (1121).

2. A heat shield structure according to claim 1, wherein a radial dimension of an end of said sound-absorbing sub-cavity (1121) near said open end (1111) is larger than a radial dimension of an end of said sound-absorbing sub-cavity (1121) far from said open end (1111).

3. A heat shield structure according to claim 2, wherein said main acoustical absorbent cavity (111) further has a first acoustical sidewall (1113) connected between said open end (1111) and said closed end (1112) to allow the sound waves of the noise conducted to one side of said first acoustical sidewall (1113) to be reflected to the other side of said first acoustical sidewall (1113);

the sound-absorbing sub-cavity (1121) has a second sound-absorbing sidewall (1122) on a side of the first sound-absorbing sidewall (1113) away from the open end (1111);

an included angle between the first sound absorption side wall (1113) and the central axis of the sound absorption main cavity (111) is alpha, and an included angle between the second sound absorption side wall (1122) and the central axis of the sound absorption main cavity (111) is beta;

wherein α is not more than β.

4. A heat shield structure according to claim 1, wherein said closed end (1112) is provided with a plurality of said acoustical cleavers (112).

5. A heat shield structure according to claim 1, wherein a plurality of said main sound-absorbing cavities (111) are arranged at intervals in a first direction, and said main sound-absorbing cavities (111) are elongated in a second direction, said first direction and said second direction being perpendicular to each other and being parallel to said first surface (a) of said plate body (110); and/or

The sound-absorbing main cavities (111) are uniformly distributed on the first surface (a) of the plate body (110).

6. A heat shield assembly, comprising a first heat shield and a second heat shield, at least one of said first heat shield and said second heat shield comprising a heat shield structure (100) according to any of claims 1-5.

7. A heat shield assembly according to claim 6, wherein said first and second heat shield each comprise a heat shield structure (100) according to any of claims 1-5;

the first surfaces (a) of the first and second heat insulation boards are oppositely arranged, and the sides of the first and second heat insulation boards facing each other are mutually connected, so that a sound wave oscillation cavity (113) communicated with the sound absorption main cavity (111) is defined between the first and second heat insulation boards;

the plate body (110) of the second heat insulation plate is also provided with a plurality of sound guide through holes (114) communicated with the sound wave oscillation cavity (113), and the sound guide through holes (114) on the second heat insulation plate are staggered with the adjacent sound absorption main cavity (111);

the sound guide through hole (114) is configured to allow the noise sound wave conducted from the sound guide through hole (114) to pass through the sound wave oscillation chamber (113) and to be conducted into the sound-absorbing main chamber (111) of the first heat insulation board and/or the sound-absorbing main chamber (111) of the second heat insulation board.

8. An insulation panel assembly according to claim 7, wherein said sound-guiding through holes (114) are directed towards a portion of said first surface (a) of said first insulation panel located between two adjacent sound-absorbing main cavities (111);

the main sound-absorbing chamber (111) of the first insulating board and the main sound-absorbing chamber (111) of the second insulating board are disposed opposite to each other.

9. Insulation board assembly according to claim 7, characterized in that the sound guiding through hole (114) is directed towards the sound absorbing main cavity (111) of the first insulation board.

10. An insulation panel assembly according to claim 7, wherein the radial dimension of the end of the sound guide through hole (114) remote from the first insulation panel is greater than the radial dimension of the end of the sound guide through hole (114) adjacent to the first insulation panel.

11. An insulation panel assembly according to claim 7, characterized in that the radial dimension of said main sound-absorbing cavity (111) of said second insulation panel is smaller than the radial dimension of said main sound-absorbing cavity (111) of said first insulation panel.

12. A gas fired water heating apparatus comprising a combustion chamber assembly including a combustion chamber enclosure, said combustion chamber enclosure including a heat shield structure (100) according to any one of claims 1 to 5; or

The heat shield assembly of any of claims 6-11.

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