CN114234449A - Gas water heater shell and gas water heater - Google Patents

Abstract

The application relates to the technical field of burners, and the embodiment of the application provides a gas water heater shell and a gas water heater, and the gas water heater shell at least comprises a bottom shell and a cover plate. In the gas water heater shell, the cover plate is arranged on the air inlet side, so that a first air inlet channel capable of introducing air from two directions is formed. It not only can increase the area of admitting air, and when can guaranteeing the air input, can help rapid cycle at first inlet channel from the inside air of participating in the burning of outdoor entering drain pan, plays the effect to the cooling of drain pan back. And the noise is more easily attenuated when propagating at low temperature, so that the noise decibel can be reduced. In addition, the cover plate and the bottom shell enclose to define a first cavity which can also play a role in attenuating transverse waves of sound waves.

Description

Gas water heater shell and gas water heater

Technical Field

The application relates to the technical field of burners, in particular to a gas water heater shell and a gas water heater with the same.

Background

In the related art, a hole is usually formed in a bottom case of a gas water heater to supply air through the hole. However, various sound sources generated by combustion in the gas water heater may be diffused outward through the opening holes, generating noise.

Disclosure of Invention

In view of the above, it is necessary to provide a gas water heater housing and a gas water heater having the same to reduce noise generated by the gas water heater.

According to one aspect of the present application, embodiments of the present application provide a gas water heater housing, comprising:

the bottom shell is provided with a first air inlet; and

the cover plate is positioned on the air inlet side of the first air inlet, and the orthographic projection of the cover plate on the bottom shell covers the first air inlet;

the cover plate and the bottom shell are encircled to define a first cavity with an opening, one end of the cover plate and the bottom shell are encircled to form the opening, one side of the cover plate, facing the bottom shell, is provided with a second air inlet communicated with the first cavity, and a first air inlet channel through which fluid can enter the first air inlet from the opening along a first direction and from the second air inlet along a second direction is formed;

the first direction and the second direction are arranged at an included angle.

In the gas water heater shell, the cover plate is arranged on the air inlet side, so that a first air inlet channel capable of introducing air from two directions is formed. It not only can increase the area of admitting air, and when can guaranteeing the air input, can help rapid cycle at first inlet channel from the inside air of participating in the burning of outdoor entering drain pan, plays the effect to the cooling of drain pan back. And the noise is more easily attenuated when propagating at low temperature, so that the noise decibel can be reduced. In addition, the first cavity can also play a role in attenuating transverse waves of sound waves. The embodiments of the invention can help to reduce the noise generated when a large amount of air is introduced, and improve the noise reduction capability of the gas water heater.

In one embodiment, the first direction is perpendicular to the second direction. Therefore, the distribution of the flow direction of the intake air can be further realized, and the intake air flow is prevented from forming a vortex.

In one embodiment, a flow guide member is arranged on the bottom shell at the first air inlet;

the flow guide member has a flow guide surface curved toward the opening to guide the fluid toward the first air inlet. So, can intercept leading-in to first air inlet with most air current through setting up the water conservancy diversion spare for the flow direction of air current more has the guidance quality, can flow regularly, is difficult to take place the vortex, further realizes falling the purpose of making an uproar.

In one embodiment, the first air inlet is formed with a plurality of first air inlet holes, and the flow guide member is provided with a plurality of flow guide members;

the plurality of flow guide pieces correspond to the plurality of first air inlet holes one by one. Therefore, the flow direction of the airflow is more regular, and the vortex is less prone to occur.

In one embodiment, a gap is formed between a surface of the cover plate facing the bottom case and the flow guide member along the second direction. Therefore, the airflow can flow through the gap, the flow direction of the airflow is further distributed, and the purpose of reducing noise is achieved.

In one embodiment, the baffle comprises a louver. Thus, the flow can be guided through the louver structure.

In one embodiment, the second air inlet is formed with a plurality of second air inlet holes arranged in an array. So, through setting up the second inlet port of arranging the rule, can carry out more even forced distribution to the air current that admits air for the air current flow direction is stable, prevents that the local gathering of air current from forming the vortex.

In one embodiment, the second air intake holes include circular holes, square holes, elliptical holes, kidney-shaped holes, triangular holes, or pentagonal holes. Thus, the intake airflow can be more uniformly distributed by designing the shape of the second intake holes.

In one embodiment, the air inlet area of the first air inlet is W1, the air inlet area of the second air inlet is W2, and the air inlet area of the opening is W3; wherein W1 is more than or equal to W2+ W3. In this way, the amount of intake air required for combustion can be ensured.

In one embodiment, the air quantity passing through the second air inlet is Q1, the air quantity passing through the opening is Q2, and the theoretical required air inlet quantity during the maximum load combustion of the gas water heater is Q3; wherein, (Q1+ Q2)/Q3 is 1.1-1.35. In this way, the amount of intake air required for combustion can be ensured.

In one embodiment, the gas water heater housing further comprises a baffle;

the partition plate is positioned on the air outlet side of the first air inlet, and the orthographic projection of the partition plate on the bottom shell covers the first air inlet; the partition plate and the bottom shell are enclosed to define a second cavity, and a third air inlet communicated with the second cavity is formed in the partition plate;

wherein a second air inlet passage is formed between the first air inlet and the third air inlet. So, through setting up tortuous second inlet channel, prolonged the transfer path of sound wave, realize effectively noise reduction.

In one embodiment, the front projection area of the partition on the bottom case is S1, and the area of the side of the bottom case facing the partition is S2;

wherein the ratio of S1 to S2 is 0.5-0.8. So, realize the effect to the better cooling of drain pan and isolation noise through this baffle.

According to another aspect of the application, a gas water heater comprises the gas water heater shell. Therefore, the noise generated when the gas water heater is used can be reduced by using the gas water heater shell.

Additional aspects and advantages of embodiments of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the present application.

Drawings

FIG. 1 is a schematic structural diagram of a housing of a gas water heater according to an embodiment of the related art;

FIG. 2 is a schematic diagram of an exploded view of a gas water heater housing in one embodiment of an embodiment of the present application;

FIG. 3 is a schematic side view of a gas water heater housing in one embodiment of an embodiment of the present application;

FIG. 4 is an enlarged view of a portion at G of FIG. 3 in an embodiment of the present application;

fig. 5 is a schematic diagram of a partially enlarged structure at K in fig. 4 in an embodiment of the present application.

Notation of elements for simplicity:

a bottom case 100, a first air inlet 110, a flow guide 120;

a cover plate 200, a second air inlet 210;

a partition 300, a third air inlet 310;

a side plate 400;

an upper baffle 500;

a lower baffle 600;

a first cavity a, an opening a1 and a second cavity b;

a first direction y, a second direction x, a gap g.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to provide a thorough understanding of embodiments of the present application. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. The embodiments of this application can be implemented in many different ways than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the invention and therefore the embodiments of this application are not limited to the specific embodiments disclosed below.

It is to be understood that the terms "first," "second," "third," and the like as used herein may be used herein to describe various terms of art, and are not to be construed as indicating or implying relative importance or implicit ly or indicating a number of technical features being indicated. However, these terms are not intended to be limiting unless specifically stated. These terms are only used to distinguish one term from another. For example, the first air inlet, the second air inlet, and the third air inlet are different air inlets, the first cavity and the second cavity are different cavities, and the first direction and the second direction are different directions without departing from the scope of the present application. In the description of the embodiments of the present application, "a plurality" or "a plurality" means at least two, e.g., two, three, etc., unless specifically defined otherwise.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; 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 meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

In the description of the embodiments of the present application, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only 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 below the second feature, or may simply mean that the first feature is at a lesser level 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.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

Along with the increasing living standard, besides the requirement of meeting the basic functional requirements of users on the water heater, the noise generated by the gas water heater also becomes an important factor for consumers to choose whether to buy the gas water heater. At present, the noise of the whole gas water heater in the market is about 55 decibels. Medically, a person is prone to moderate hearing loss in a 55 db environment for a long period of time. Therefore, under the condition of ensuring the basic function composite requirement of the gas water heater, a mute product with lower noise needs to be developed.

FIG. 1 is a schematic diagram of a gas water heater housing according to an embodiment of the related art; for convenience of explanation, only portions related to the embodiments in the related art are shown.

For ease of understanding, as shown in FIG. 1, the top of the drawing sheet is defined as top, the bottom of the drawing sheet is defined as bottom, the left side of the drawing sheet is defined as the front inward, the right side of the drawing sheet is defined as the back outward, the left side of the drawing sheet is defined as the right outward, and the right side of the drawing sheet is defined as the left inward. Subsequent figures follow the definitions of fig. 1. It is to be understood that the above definitions are for illustration purposes only and are not to be construed as limitations of the present application. It should be noted that the front side refers to the side facing the user, and the back side refers to the side facing away from the user.

As shown in fig. 1, a hole is usually formed in the bottom case 100 of the gas water heater to supply air through the hole to meet the requirement of the combustion process.

The noise sources of the gas water heater comprise electromagnetic noise, combustion oscillation noise, water flow noise, vaporization noise, fan noise, pneumatic noise and the like. The inventor of the present application has noticed that, in the air intake process of the combustion water heater, various sound sources generated by internal combustion are directly transmitted to the air through the openings on the bottom case 100, and the noise is directly transmitted to the ears of the user without being attenuated.

Based on this, this application embodiment can make noise obtain the decay in the transmission process through changing air inlet mode and inlet channel, and then realizes the purpose of making an uproar. The gas water heater shell provided by the embodiment of the application is described in connection with the related description of some embodiments.

FIG. 2 illustrates an exploded view of a gas water heater housing in one embodiment of an embodiment of the present application; FIG. 3 illustrates a schematic side view of a gas water heater housing in one embodiment of an embodiment of the present application; FIG. 4 is a schematic diagram showing a partial enlarged structure at G in FIG. 3 in an embodiment of the present application; for convenience of explanation, only portions related to the embodiments of the present application are shown.

Referring to fig. 2 to 4, the embodiment of the present application provides a gas water heater shell, which includes a bottom shell 100 and a cover plate 200. The bottom case 100 is provided with a first air inlet 110. The cover plate 200 is located on an air intake side of the first air inlet 110 (i.e., a rear side of the bottom case 100 illustrated in fig. 2 to 4), and an orthographic projection of the cover plate 200 on the bottom case 100 covers the first air inlet 110. The cover 200 and the bottom case 100 enclose a first cavity a having an opening a1, one end of the cover 200 and the bottom case 100 enclose an opening a1, and a side of the cover 200 facing the bottom case 100 is provided with a second air inlet 210 communicating with the first cavity a to form a first air inlet channel through which fluid can enter the first air inlet 110 from the second air inlet 210 along a first direction y (a rear-to-front direction illustrated in fig. 3) and from the opening a1 along a second direction x (a bottom-to-top direction illustrated in fig. 3). The first direction y and the second direction x are arranged at an included angle.

It should be noted that the first air inlet 110 provided on the bottom case 100 may be disposed at an upper portion of the bottom case 100, may also be disposed at a middle portion of the bottom case 100, and may also be disposed at a lower portion of the bottom case 100, and fig. 2 to 4 illustrate a case where the first air inlet is disposed at a lower portion of the bottom case 100, which is not specifically limited in this embodiment of the present invention. "orthographic projection of cover 200 on bottom case 100" means that the parallel projection line of cover 200 projection is perpendicular to the plane of bottom case 100. Taking fig. 3 as an example, the direction of the parallel projection line is a rear-to-front direction, that is, in the direction, the cover plate 200 is disposed opposite to the first air inlet 110. The second air inlet 210 provided in the cover 200 may be offset from the first air inlet 110 in the rear-to-front direction, or may not be offset. It is to be understood that reference herein to "staggered" means that the second inlet 210 is at a different height from the first inlet 110 in the top-to-bottom direction, and "not staggered" means that the second inlet 210 is at the same height as the first inlet 110 in the top-to-bottom direction. "the cover plate 200 and the bottom case 100 enclose to define the first cavity a having the opening a 1" means that at least one of the cover plate 200 and the bottom case 100 has a portion recessed toward a direction away from the other. Taking fig. 2 as an example, fig. 2 illustrates that the cover plate 200 has a portion recessed toward a direction away from the bottom case 100 (i.e., a direction toward the rear side illustrated in fig. 2), the upper end, the left end, and the right end of the cover plate 200 each have a flange, the cover plate 200 is detachably coupled to the rear surface of the bottom case 100 by means of the flanges, and a distance is provided between the lower end of the cover plate 200 and the bottom case 100, so that the cover plate 200 and the bottom case 100 enclose a first cavity a having an opening a1 at the lower side. Of course, the first cavity a may be formed by providing a recessed portion on the bottom case 100 corresponding to the cover plate 200 and facing away from the cover plate 200, and the first cavity a may be formed by providing the recessed portion on both the bottom case 100 and the cover plate 200, as long as the first cavity a can be formed, which is not particularly limited in the embodiment of the present application.

Thus, by providing the cover plate 200 on the intake side, a first intake passage is formed that can intake air from two directions. It not only can increase the area of admitting air, and when can guaranteeing the air input, the air that gets into the inside participation burning of drain pan 100 from outdoor can help rapid cycle at first inlet channel, plays the effect to the cooling of drain pan 100 back. And the noise is easier to be attenuated when the noise is transmitted in low temperature, and the noise can be further reduced. In addition, since the acoustic wave has two waveforms of a longitudinal wave and a transverse wave while propagating through the medium, the acoustic wave propagates as a longitudinal wave, a transverse wave, or a superposition of the two waveforms. Both longitudinal and transverse waves propagate in solids, but only in longitudinal waves when they propagate in gases and liquids. Therefore, the first cavity a may also attenuate a transverse wave of the acoustic wave.

In order to distribute the flow direction of the intake air by utilizing the intake air in two different directions, and further prevent the intake air flow from forming a vortex, in some embodiments, please refer to fig. 3 again, the first direction y is perpendicular to the second direction x. Taking fig. 3 as an example, fig. 3 illustrates a case where the first direction y is a direction from bottom to top, and the second direction x is a direction from back to front. Of course, when the cover plate 200 and the bottom case 100 enclose the first cavity a having the opening a1 on the upper side, the second direction x is a direction from bottom to top, which is not particularly limited in the embodiment of the present invention.

Through further research, the reason for the generation of the gas vortex is caused by the formation of vortex air flow by air in different directions. If the airflow directly enters the first cavity a from the opening a1 and the second air inlet 210, the airflow may easily collide with the bottom of the bottom case 100 and the cover plate 200, and the airflow may bounce, so that the airflow has multiple flowing directions in the first cavity a, and thus a vortex is easily generated.

In some embodiments, with continued reference to fig. 4 and with reference to fig. 3, a flow guide 120 is disposed on the bottom case 100 at the first air inlet 110. The guide member 120 has a guide surface curved toward the opening a1 to guide the fluid toward the first air inlet 110. Therefore, most of air flow can be intercepted and guided into the first air inlet 110 by arranging the flow guide piece 120, so that the flow direction of the air flow has higher guidance quality, the air flow can flow regularly, vortex is not easy to generate, and the purpose of noise reduction is further realized. Specifically, in some embodiments, please refer to fig. 4, the first air inlet 110 is formed with a plurality of first air inlets, and the air guiding element 120 is provided with a plurality of air inlets. The plurality of air guides 120 correspond to the plurality of first air inlet holes one to one. Therefore, the flow direction of the airflow is more regular, and the vortex is less prone to occur. In some embodiments, the first air inlets may be arranged in an array, and correspondingly, the flow guiding members 120 may be arranged in an array, so that the flow direction of the gas may be further regular. In particular, in other embodiments, to further prevent the generation of the vortex, the first air inlet 110 and the second air inlet 210 may be arranged in a staggered manner, so that the air entering from the second air inlet 210 may be further distributed.

It should be noted that, in order to meet the flow guiding requirement, the curved direction of the flow guiding surface of the flow guiding member 120 corresponds to the opening a 1. Fig. 4 illustrates a state where the opening a1 is located at the lower side and the guide 120 is bent downward.

FIG. 5 is a schematic diagram showing a partial enlarged structure at K in FIG. 4 in an embodiment of the present application; for convenience of explanation, only portions related to the embodiments of the present application are shown.

In some embodiments, referring to fig. 5 in combination with fig. 4, a gap g is formed between a surface of the cover plate 200 facing the bottom case 100 (i.e., a left side surface of the cover plate 200 illustrated in fig. 5) and the flow guide 120 along the second direction x. That is, taking fig. 4 and 5 as an example, the air entering from the opening a1 and the second air inlet 210 is cut into two parts by the baffle 120, one part is guided to the first air inlet 110 by the baffle 120, and the other part enters from the gap g to the vicinity of the other baffle 120 located above and is cut into two parts by the other baffle 120. Thus, the airflow can flow through the gap g, and the flow direction of the airflow is further distributed, so that the purpose of reducing noise is achieved.

In some embodiments, with continued reference to fig. 2 and 4, the baffle 120 includes louvers. Thus, the flow can be guided through the louver structure.

In some embodiments, with reference to fig. 2, the second air inlet 210 is formed with a plurality of second air inlet holes arranged in an array. So, through setting up the second inlet port of arranging the rule, can carry out more even forced distribution to the air current that admits air for the air current flow direction is stable, prevents that the local gathering of air current from forming the vortex. In some embodiments, the second air inlet holes include circular holes, square holes, elliptical holes, kidney-shaped holes, triangular holes, or pentagonal holes. Thus, the intake airflow can be more uniformly distributed by designing the shape of the second intake holes.

It should be noted that, the plurality of second air intake holes may all be in the shape of one of the above-mentioned holes, or may be a combination of at least two of them. The sizes of the plurality of second air inlet holes may be the same, may not be the same, or may not be completely the same, which is not specifically limited in the embodiment of the present application. As an embodiment, taking fig. 2 as an example, it is illustrated that the plurality of second air inlet holes are circular holes, and the plurality of second air inlet holes have the same size, so that the air can be uniformly and forcibly distributed through the circular air inlet holes arranged in an array and having the same size, so that the airflow direction is more stable.

Since the intake air amount is controlled by the second intake port 210, in some embodiments, the air intake area of the first intake port 110 is W1, the air intake area of the second intake port 210 is W2, and the air intake area of the opening a1 is W3. Wherein W1 is more than or equal to W2+ W3. That is, the sum of the air intake areas of the air intake from the second air intake port 210 and the opening a1 is not greater than the air intake area of the air intake from the first air intake port, so that the amount of intake air required for combustion can be ensured, so that the air intake from the second air intake port 210 and the opening a1 can more completely enter the first air intake port 110.

In some embodiments, the amount of air passing through the secondary air inlet 210 per unit time is Q1, the amount of air passing through the opening a1 is Q2, and the theoretical required intake air amount at the time of maximum load combustion of the gas water heater is Q3. Wherein, (Q1+ Q2)/Q3 is 1.1-1.35. That is, the ratio of the sum of the intake air amount passing through the second intake port 210 and the opening a1 to the theoretically required intake air amount at the time of maximum load combustion of the gas water heater is 1.1 to 1.35. Because the required air input of gas heater can be greater than the theoretical required air input when the maximum load of gas heater burns, so, can guarantee the required air input of burning.

It is found that the higher the temperature, the faster the propagation speed of the acoustic wave. When the heat generated in the combustion is radiated to the surroundings, the temperature of the air around the back of the bottom case 100 and the combustion chamber is significantly higher than the outdoor temperature, which is more favorable for the propagation of noise. In addition, the bottom case 100 is generally made of a material with a thickness of 0.8 mm or less, and its thickness is equivalent to that of other sheet metal parts. When noise is transmitted, the bottom case 100 is relatively poor in overall rigidity and is more easily excited by sound waves to generate resonance, and the resonance can increase noise.

In some embodiments, with continued reference to fig. 2-4, the gas water heater housing further includes a baffle 300. The partition 300 is located at an air outlet side of the first air inlet 110 (i.e., a front side of the bottom case 100 illustrated in fig. 2 to 4), and an orthographic projection of the partition 300 on the bottom case 100 covers the first air inlet 110. The partition 300 and the bottom case 100 enclose a second cavity b, and a third air inlet 310 communicated with the second cavity b is formed in the partition 300. Wherein a second air inlet passage is formed between the first air inlet 110 and the third air inlet 310.

Because the burner is continuously burned in the bottom case 100, the generated radiation heat is transferred to the outside of the bottom case 100, and the air in the second cavity b enters the first cavity a and then enters the second cavity b from the cold air outside the bottom case 100. At this time, the gas circularly flowing from the outside to the inside of the bottom case 100 can reduce the temperature of the back of the whole bottom case 100, and the density of the low-temperature air can effectively block the energy of sound waves, so that the propagation speed of the sound waves is reduced, and a certain noise reduction effect can be achieved. So, through setting up tortuous second inlet channel, prolonged the transfer path of sound wave, realize effectively noise reduction. Meanwhile, the air interlayer which can be formed in the second cavity b plays a role in attenuating transverse waves of sound waves, and further plays a role in attenuating noise transmission.

It should be noted that "the front projection of the partition 300 on the bottom case 100" means that the parallel projection line projected by the partition 300 is perpendicular to the plane of the bottom case 100. Taking fig. 3 as an example, the direction of the parallel projection line is a rear-to-front direction, that is, in the direction, the partition 300 is disposed opposite to the first air inlet 110. The phrase "the partition 300 and the bottom case 100 enclose to define the second cavity b" means that at least one of the partition 300 and the bottom case 100 has a portion recessed in a direction away from the other, as long as the second cavity b can be formed, and this is not particularly limited in the embodiment of the present application. As an embodiment, taking fig. 2 as an example, fig. 2 illustrates that the bottom case 100 has a portion that is recessed toward a direction away from the partition 300 (i.e., a direction toward the rear side illustrated in fig. 2), and the upper end, the lower end, the left end and the right end of the partition 300 each have a flange, by which the partition 300 can be detachably connected to the back of the bottom case 100, so that the partition 300 and the bottom case 100 enclose to define the second cavity b, and at the same time, the rigidity of the bottom case 100 can be enhanced. Continuing with fig. 2 and 3 as an example, the phrase "the first air inlet 110 and the third air inlet 310 form a zigzag second air inlet passage" means that the height of the first air inlet 110 is different from the height of the third air inlet 310 in the up-down direction, and fig. 2 and 3 illustrate a case where the height of the first air inlet 110 is lower than the height of the third air inlet 310, so that the zigzag second air inlet passage can be formed and the length of the second air inlet passage is increased.

In some embodiments, in order to make the air flow more regularly to reduce noise, the third air inlet 310 may also form a plurality of third air inlets arranged in an array, and a flow guide device may be correspondingly disposed on a side of the third air inlet facing the bottom case 100.

In some embodiments, with continued reference to fig. 2 and 3, the front projection area of the partition 300 on the bottom case 100 is S1, and the area of the side of the bottom case 100 facing the partition 300 is S2. Wherein the ratio of S1 to S2 is 0.5-0.8. That is, as can be seen from fig. 2 and 3, the partition 300 substantially covers the front side of the bottom chassis 100, and functions to reinforce the rigidity of the bottom chassis 100. Since the rigidity of the bottom chassis 100 is strengthened, that is, the natural frequency of the entire bottom chassis 100 is changed, the natural frequency of the bottom chassis 100 is increased. When the combustion water heater works, various vibrations of the combustion water heater are not easy to excite the bottom case 100, and resonance is not easy to generate, so that a vibration source for reducing noise is not easy to generate, and noise reduction is realized. Thus, the partition plate 300 can better cool the bottom case 100 and isolate noise.

In some embodiments, with continued reference to fig. 2 and 3, the gas water heater case further includes two side plates 400 connecting the left and right ends of the bottom case 100, an upper baffle 500 connecting the upper end of the bottom case 100, and a lower baffle 600 connecting the lower end of the bottom case 100. The two side plates 400, the upper barrier 500, and the lower barrier 600 are located at the front side of the bottom chassis 100. Therefore, the space for placing relevant components in the gas water heater can be enclosed. In this space, an inner partition 300 divides it into two chambers. One of the chambers is a second chamber, which can be used as a chamber for gas flow, cooling the back of the bottom case 100 and isolating noise. The other chamber is a main chamber which is used for installing a burner, a heat exchanger, a fan assembly and other parts.

Based on the same inventive concept, the embodiment of the application also provides a gas water heater, which comprises the gas water heater shell in the embodiment. Therefore, the noise generated when the gas water heater is used can be reduced by using the gas water heater shell.

In summary, the embodiment of the present application provides a gas water heater shell, air enters a first cavity a formed between the cover plate 200 and the bottom shell 100 from two directions of the second air inlet 210 on the cover plate 200 and the opening a1 formed between the cover plate 200 and the bottom shell 100, enters a second cavity b formed between the partition plate 300 and the bottom shell 100 from the first air inlet 110 on the bottom shell 100, and enters the main cavity from the third air inlet 310 on the partition plate 300. In the process, the path through which the gas flows is strengthened, the noise generated by combustion in the main cavity needs to pass through the partition plate 300, the second cavity b formed between the partition plate 300 and the bottom case 100, the bottom case 100 (part of the noise needs to pass through the first cavity formed between the bottom case 100 and the cover plate 200) in sequence and then to the human ear, and after the noise is transmitted through the plurality of medium layers, the transverse wave of the noise sound wave can be filtered when the noise passes through the first cavity and the second cavity, so that the purpose of reducing the noise is achieved. Simultaneously, when the air gets into the first cavity a that forms between apron 200 and the drain pan 100 from second air inlet 210 on the apron 200 and the two directions of opening a1 that apron 200 and drain pan 100 formed, the circular shape second inlet port of matrix on the apron 200 carries out even forced distribution to admitting air for the air current flow direction is stable, can not appear causing the swirl air current in local gathering, thereby play the effect that prevents to form the vortex in first cavity a, realize the purpose of effective noise reduction. When air enters the second cavity b formed between the partition 300 and the bottom case 100 from the first air inlet 110 on the bottom case 100, since the air enters cold air outside the bottom case 100, the cold air circulating can reduce the temperature of the entire back of the bottom case 100, thereby slowing down the propagation speed of sound waves. In addition, the flow guide members 120 are disposed at the first air inlet 110 and the third air inlet 310, so that the flow direction of the air is more guided, and thus, the air flowing regularly is not easy to generate vortex. Therefore, through the process, the purpose of noise reduction can be achieved.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as 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 invention. 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 (10)

1. A gas water heater housing, comprising:

the air conditioner comprises a bottom shell (100), wherein a first air inlet (110) is formed in the bottom shell (100); and

a cover plate (200) positioned on the air inlet side of the first air inlet (110), and the orthographic projection of the cover plate (200) on the bottom case (100) covers the first air inlet (110);

wherein the cover plate (200) and the bottom case (100) enclose to define a first cavity (a) with an opening (a1), one end of the cover plate (200) and the bottom case (100) enclose to form the opening (a1), one side of the cover plate (200) facing the bottom case (100) is provided with a second air inlet (210) communicated with the first cavity (a) to form a first air inlet channel through which fluid can enter the first air inlet (110) from the opening (a1) along a first direction (y) and from the second air inlet (210) along a second direction (x);

the first direction (y) and the second direction (x) are arranged at an included angle.

2. Gas water heater housing according to claim 1, wherein the first direction (y) is perpendicular to the second direction (x).

3. Gas water heater housing according to claim 1, wherein a deflector (120) is provided on the bottom shell (100) at the first air inlet (110);

the guide member (120) has a guide surface curved toward the opening (a1) to guide the fluid toward the first air inlet (110).

4. Gas water heater housing according to claim 3, wherein, in said second direction (x), there is a gap (g) between the surface of the cover plate (200) facing the bottom shell (100) and the deflector (120).

5. A gas water heater housing according to claim 3, wherein the baffle (120) comprises louvers; the second air inlet (210) is formed with a plurality of second air inlet holes arranged in an array.

6. The gas water heater housing according to any one of claims 1-5, wherein the air intake area of the first air intake opening (110) is W1, the air intake area of the second air intake opening (210) is W2, and the air intake area of the opening (a1) is W3;

wherein W1 is more than or equal to W2+ W3.

7. The gas water heater housing according to any one of claims 1-5, wherein the amount of air passing through the second air inlet (210) per unit time is Q1, the amount of air passing through the opening (a1) is Q2, and the theoretical required intake air amount at the time of maximum load combustion of the gas water heater is Q3;

wherein, (Q1+ Q2)/Q3 is 1.1-1.35.

8. Gas water heater housing according to any one of claims 1-5, further comprising a baffle (300);

the partition plate (300) is positioned on the air outlet side of the first air inlet (110), and the orthographic projection of the partition plate (300) on the bottom shell (100) covers the first air inlet (110); the partition plate (300) and the bottom shell (100) enclose to define a second cavity (b), and a third air inlet (310) communicated with the second cavity (b) is formed in the partition plate (300);

wherein a second air inlet passage is formed between the first air inlet (110) and the third air inlet (310).

9. Gas water heater housing according to claim 8, characterized in that the frontal projection area of the partition (300) on the bottom shell (100) is S1, the area of the side of the bottom shell (100) facing the partition (300) is S2;

wherein the ratio of S1 to S2 is 0.5-0.8.

10. A gas water heater comprising a gas water heater housing as claimed in any one of claims 1-9.

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