CN217423635U - Gas water heater and shell assembly thereof - Google Patents

Abstract

The utility model relates to a gas water heater and housing assembly thereof, gas water heater's housing assembly includes: back panel (10) and cover plate (20), cover plate (20) set up in on back panel (10), cover plate (20) with back panel (10) enclose and close and form cavity (30), and on the one hand, the fresh air inlet and first air outlet dislocation arrangement, when compound noise propagates outside after the cavity, make the propagation path extension like this, not the straight-in mode of straightening out like traditional technique, but because the undulation of die mould in the cavity, produce attenuations such as refraction, reflection, diffraction, the acoustic energy of partial noise can significantly reduce. Therefore, the noise is attenuated in the process of propagation and diffusion in the cavity, and is attenuated by sound energy before being propagated, so that the system noise is effectively reduced, and the running noise of the whole machine can be reduced by about 3dB-5 dB.

Description

Gas water heater and shell assembly thereof

Technical Field

The utility model relates to a water heater technical field especially relates to a gas heater and casing assembly thereof.

Background

With the improvement of living standard, the demand of the gas water heater is not limited to a simple hot water bathing function. Comfort indexes such as constant water temperature and low running noise in the whole process are increasingly emphasized. The concept of acoustic channel is gradually applied to the technical field of sound insulation and noise reduction of gas water heaters.

The traditional gas water heater is usually hung on the walls of kitchens, toilets and balconies, the panel close to the wall is a back panel, and the back panel is usually provided with an air inlet channel which is straight in and out. However, the composite noise such as combustion oscillation and flame disturbance generated in the operation process of the whole machine is diffused and propagated outwards through the air inlet channel without attenuation, and the operation noise is large, so that the product performance is poor.

Disclosure of Invention

The utility model provides a first technical problem provide a gas heater's casing assembly, it can the noise reduction effectively, promotes and produces the property ability.

The utility model provides a second technical problem provide a gas heater, its noise reduction with the efficiency promotes and produces property ability.

The first technical problem is solved by the following technical scheme:

a housing assembly for a gas water heater, the housing assembly comprising:

the air inlet device comprises a back panel and a cover plate, wherein the cover plate is arranged on the back panel, the cover plate and the back panel are enclosed to form a cavity, a strip-shaped opening and a plurality of air inlet holes are formed in the back panel, and the air inlet holes are formed in a wall body of an air inlet path passing through the strip-shaped opening; the cover plate is provided with at least one first air outlet which is arranged in a staggered manner with the plurality of air inlet holes; the fresh air inlet, the strip-shaped opening and the first air outlet are communicated with the cavity.

Gas heater's casing assembly, compare produced beneficial effect with the background art:

when the gas water heater operates and burns, the external fresh air enters the cavity from the air inlet and the strip-shaped opening and enters the gas water heater from the first air outlet, and the supplement and heat dissipation requirements of primary air and secondary air required by burning are met. Simultaneously, the combustion oscillation, the flame disturbance that the burning produced, compound noise such as fan running noise enter into the cavity through first air outlet, outwards propagate along the opposite direction that the air flows. On one hand, the air inlet hole and the first air outlet are arranged in a staggered mode, so that when the composite noise is transmitted to the outside after passing through the cavity, the transmission path is prolonged, the mode is not a straight-in and straight-out mode like the traditional technology, but attenuation such as refraction, reflection, diffraction and the like is generated in the cavity due to the pressure fluctuation, and the sound energy of partial noise can be greatly reduced. In addition, the attenuated composite noise reaches the air inlet holes and the strip-shaped openings, and the parts of the cavity corresponding to the air inlet holes and the air inlet holes form a perforated plate resonance silencer, so that the resonance frequency is close to the combustion frequency, and the incident sound waves of the composite noise generate violent vibration friction when passing through the air inlet holes to form absorption peaks and reduce the sound energy of the noise. Therefore, the noise is attenuated in the process of propagation and diffusion in the cavity, and is attenuated by sound energy before being propagated, so that the system noise is effectively reduced, and the running noise of the whole machine can be reduced by about 3dB-5 dB.

In one embodiment, the diameter of the air inlet hole is defined as d, and d is 1mm-3 mm; the thickness of the plate at the position of the air inlet on the back panel is defined as t, and t is 0.6mm-1 mm; the distance between the plate body at the air inlet hole on the back panel and the cover plate is defined as L1, and L1 is 5mm-20 mm; the edge distance between two adjacent air inlet holes is defined as J, and J is 2mm-10 mm.

In one embodiment, d is 3 mm; t is 0.8 mm; l1 is 10 mm; j is 4 mm.

In one embodiment, the back panel is provided with a first concave part recessed towards a direction away from the cover plate, and a second concave part arranged adjacent to the first concave part, the depth of the first concave part is defined as S1, the depth of the second concave part is defined as S2, and S1 > S2; the bottom wall of the first concave part is defined as a first bottom wall, the bottom wall of the second concave part is defined as a second bottom wall, the plurality of air inlet holes are formed in the second bottom wall, and the first air outlet is formed in a position, opposite to the first bottom wall, on the cover plate; at least a part of or the entire area of one of the side walls of the second recess forms the strip-shaped opening.

In one embodiment, the perforation rate on the second bottom wall is defined as p, and p is 0.01-0.02.

In one embodiment, the cover plate is further provided with at least one second air outlet staggered with the plurality of air inlet holes.

In one embodiment, the second air outlet is disposed on a portion of the cover plate opposite to the first bottom wall, and the second air outlet and the first air outlet are spaced apart from each other.

In one embodiment, a first protruding portion and a second protruding portion protruding toward the first bottom wall are disposed on a portion of the cover plate opposite to the first bottom wall, the first protruding portion extends into the first recessed portion and is located between the plurality of air inlet holes and the first air outlet, and the second protruding portion extends into the first recessed portion and is located between the plurality of air inlet holes and the second air outlet.

In one embodiment, a distance between the panel surface of the cover plate and the first bottom wall is defined as L2, a height of the first protrusion protruding from the panel surface of the cover plate is defined as h1, and a height of the second protrusion protruding from the panel surface of the cover plate is defined as h 2; wherein L2 is more than or equal to 5mm and less than or equal to 20 mm; h1 is more than 5mm and less than 20mm, and h1 is more than L2; 3mm < h2 < 18mm, and h2 < h 1.

In one embodiment, the back panel is further provided with a third concave part which is concave towards the direction far away from the cover plate and is adjacent to the second concave part; the bottom wall of the third concave part is defined as a third bottom wall, and at least one air inlet is formed in the third bottom wall; and at least one third air outlet is arranged on the part of the cover plate opposite to the third bottom wall, and the third air outlet and the air inlet are arranged in a staggered manner.

In one embodiment, an air deflector is arranged at the air inlet and located inside the chamber, one side of the air deflector is connected with the opening edge of the air inlet, and an airflow gap is formed between the other side of the air deflector and the third bottom wall.

The second technical problem is solved by the following technical solutions:

a gas water heater comprises the shell assembly.

Gas heater, compare produced beneficial effect with the background art:

when the gas water heater operates and burns, external fresh air enters the cavity from the air inlet and the strip-shaped opening and enters the gas water heater from the first air outlet, and the supplement and heat dissipation requirements of primary air and secondary air required by burning are met. Simultaneously, the combustion oscillation, the flame disturbance that the burning produced, compound noise such as fan running noise enter into the cavity through first air outlet, outwards propagate along the opposite direction that the air flows. On one hand, the air inlet hole and the first air outlet are arranged in a staggered mode, so that when the composite noise is transmitted to the outside after passing through the cavity, the transmission path is prolonged, the mode is not a straight-in and straight-out mode like the traditional technology, but attenuation such as refraction, reflection, diffraction and the like is generated in the cavity due to the pressure fluctuation, and the sound energy of partial noise can be greatly reduced. In addition, the attenuated composite noise reaches the air inlet holes and the strip-shaped openings, and the parts of the cavity corresponding to the air inlet holes and the air inlet holes form a perforated plate resonance silencer, so that the resonance frequency is close to the combustion frequency, and the incident sound waves of the composite noise generate violent vibration friction when passing through the air inlet holes to form absorption peaks and reduce the sound energy of the noise. Therefore, the noise is attenuated in the process of propagation and diffusion in the cavity, and is attenuated by sound energy before being propagated, so that the system noise is effectively reduced, and the running noise of the whole machine can be reduced by about 3dB-5 dB.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic view of a housing assembly of a gas water heater according to an embodiment of the present invention;

FIG. 2 is an exploded view of the structure shown in FIG. 1;

fig. 3 is a schematic view of another perspective structure of a housing assembly of a gas water heater according to an embodiment of the present invention;

fig. 4 is a schematic back structural view of a housing assembly of a gas water heater according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of FIG. 4 at A-A;

FIG. 6 is a schematic cross-sectional view at B-B of FIG. 4;

fig. 7 is a schematic cross-sectional structural view of a housing assembly of a gas water heater according to an embodiment of the present invention;

FIG. 8 is an enlarged schematic view of FIG. 7 at C;

fig. 9 is a schematic cross-sectional structural view of a housing assembly of a gas water heater according to an embodiment of the present invention;

FIG. 10 is an enlarged schematic view of FIG. 9 at D;

fig. 11 is a schematic cross-sectional view of a housing assembly of a gas water heater according to an embodiment of the present invention;

fig. 12 is an enlarged schematic view at E of fig. 11.

Reference numerals:

10. a back panel; 111. an air inlet hole; 112. a strip-shaped opening; 12. a first recess; 121. a first bottom wall; 13. a second recess; 131. a second bottom wall; 14. a third recess; 141. a third bottom wall; 143. an air inlet; 144. an air deflector; 20. a cover plate; 211. a first air outlet; 221. a second air outlet; 23. a first convex portion; 24. a second convex portion; 251. a third air outlet; 30. a chamber.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention 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 invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

Referring to fig. 1 to 3, fig. 1 shows a view structure diagram of a housing assembly of a gas water heater according to an embodiment of the present invention, fig. 2 shows an exploded view structure diagram of the structure shown in fig. 1, and fig. 3 shows another view structure diagram of the housing assembly of the gas water heater according to an embodiment of the present invention. An embodiment of the utility model provides a pair of gas heater's casing assembly, gas heater's casing assembly includes: a back panel 10 and a bezel 20. The cover plate 20 is disposed on the back panel 10, and the cover plate 20 and the back panel 10 enclose a cavity 30. The rear panel 10 is provided with a strip-shaped opening 112 and a plurality of air inlet holes 111, and the air inlet holes 111 are provided on the wall of the air inlet path passing through the strip-shaped opening 112. The hood panel 20 is provided with at least one first outlet 211 arranged to be staggered with the plurality of inlet openings 111. The air inlet 111, the strip-shaped opening 112 and the first air outlet 211 are all communicated with the chamber 30.

When the gas water heater operates and burns, external fresh air enters the cavity 30 from the air inlet 111 and the strip-shaped opening 112 and enters the gas water heater from the first air outlet 211, and the requirements of supplementing primary air and secondary air and dissipating heat required by burning are met. Meanwhile, compound noises such as combustion oscillation, flame disturbance, fan operation noise and the like generated by combustion enter the chamber 30 through the first air outlet 211 and are transmitted outwards along the opposite direction of air flow. On one hand, the air inlet 111 and the first air outlet 211 are arranged in a staggered manner, so that when the composite noise propagates through the chamber 30 and then outwards, the propagation path is extended, and the attenuation such as refraction, reflection, diffraction and the like is generated in the chamber 30 due to the pressure fluctuation instead of a straight-in and straight-out manner as in the conventional technology, so that the sound energy of part of the noise can be greatly reduced. In addition, the attenuated composite noise reaches the air inlet holes 111 and the strip-shaped openings 112, and the part of the chamber 30 corresponding to the air inlet holes 111 and the air inlet holes 111 form a perforated plate resonance silencer, so that the resonance frequency is close to the frequency of combustion noise, and thus, incident sound waves of the composite noise generate violent vibration friction when passing through the air inlet holes 111, so as to form absorption peaks and reduce sound energy of the noise. Therefore, the noise is attenuated in the process of propagation and diffusion in the cavity 30, and is attenuated by sound energy before being propagated, so that the system noise is effectively reduced, and the running noise of the whole machine can be reduced by about 3dB-5 dB.

Referring to fig. 2, 3 and 5, in one embodiment, the air inlet direction of the strip-shaped opening 112 forms an included angle with the air inlet direction of the air inlet hole 111. Specifically, the back panel 10 is provided with a second concave portion 13 that is concave in a direction away from the cover panel 20, a bottom wall of the second concave portion 13 is defined as a second bottom wall 131, the plurality of air inlet holes 111 are provided on the second bottom wall 131, and the at least one first air outlet 211 is provided on a portion of the cover panel 20 that is opposite to the first bottom wall 121. In addition, at least a part of or the whole area of one of the side walls of the second recess 13 forms a strip-shaped opening 112, so that the air inlet direction of the strip-shaped opening 112 is arranged at an angle to the air inlet direction of the air inlet hole 111. Thus, the part of the chamber 30 corresponding to the plurality of air inlet holes 111 and the plurality of air inlet holes 111 form a perforated plate resonance silencer, so that the resonance frequency is close to the frequency of combustion noise, and thus, incident sound waves of compound noise generate violent vibration friction when passing through the air inlet holes 111, and form an absorption peak to reduce sound energy of the noise.

It should be noted that, the staggered arrangement of the air inlet holes 111 and the at least one first air outlet 211 means that the air inlet holes and the at least one first air outlet are not arranged oppositely in a direction perpendicular to the plate surface, that is, the air inlet holes and the at least one first air outlet cannot coincide with each other.

In one embodiment, the peripheral edge of cover sheet 20 is closely fitted to back panel 10 such that both cover sheet 20 and back panel 10 enclose cavity 30. Specifically, the peripheral edge of the cover plate 20 includes, but is not limited to, a removable attachment to the back panel 10 by screws, bolts, pins, rivets, snaps, and the like.

Referring to fig. 4, in one embodiment, the diameter of the air inlet holes 111 is defined as d, and d is 1mm to 3 mm. So, the diameter d of fresh air inlet 111 is less, accords with the design requirement, is equivalent to the micropore, can realize better noise reduction effect.

Referring to fig. 5, in one embodiment, the thickness of the back panel 10 where the air inlet holes 111 are formed is defined as t, where t is 0.6mm to 1 mm. Therefore, the design size of the plate thickness t at the position of the air inlet hole 111 on the back panel 10 is proper, so that the material consumption of the plate can be saved while the good noise reduction effect is ensured.

Referring to fig. 9 and 10, in one embodiment, a distance between the panel body at the position of the air inlet 111 on the back panel 10 and the cover panel 20 is defined as L1, and L1 is 5mm-20 mm. Thus, the distance L1 between the plate body of the rear panel 10 where the air inlet holes 111 are formed and the cover plate 20 can ensure that the air resistance of the chamber 30 is not too large, which results in a small air volume, and that the air resistance of the chamber 30 is not too small, which results in a large air volume.

In one embodiment, the distance between the edges of two adjacent air inlet openings 111 is defined as J, and J is 2mm to 10 mm.

It should be noted that the edge distance refers to a distance obtained by subtracting the radius of one of the air inlet holes and subtracting the radius of the other air inlet hole from the distance between the centers of the two air inlet holes 111.

In one embodiment, the perforation rate on the second bottom wall 131 is defined as p, and p is 0.01-0.02. Therefore, the design size of the perforation rate p is more suitable, and a better noise reduction effect can be realized.

In one embodiment, d is 3 mm; t is 0.8 mm; l1 is 10 mm; p is 0.015; j is 4 mm. Therefore, the resonance frequency of the perforated plate noise elimination structure is close to the central peak value (about 300Hz) of the noise frequency band of the combustion noise spectrum analysis, and the noise reduction effect is better.

Alternatively, the number of the air inlet holes 111 provided at the second bottom wall 131 is generally 60 to 100.

Referring to fig. 1, 3 and 5, in an embodiment, a first concave portion 12 is recessed toward a direction away from the cover plate 20 and a second concave portion 13 is disposed adjacent to the first concave portion 12, a depth of the first concave portion 12 is defined as S1, a depth of the second concave portion 13 is defined as S2, and S1 > S2. The bottom wall of the first recess 12 is defined as a first bottom wall 121, the bottom wall of the second recess 13 is defined as a second bottom wall 131, the plurality of air inlet holes 111 are disposed on the second bottom wall 131, and the first air outlet 211 is disposed on a portion of the cover plate 20 opposite to the first bottom wall 121. Therefore, on the one hand, since S1 is greater than S2, the first concave portion 12 and the second concave portion 13 are disposed adjacent to each other, so that the structure formed by the first bottom wall 121 and the second bottom wall 131 is stepped, when noise passes through the chamber 30 and the air inlet holes 111 to pass through, the noise will undulate in the chamber 30, and attenuation such as refraction, reflection, diffraction and the like is generated, so that sound energy of part of the noise can be greatly reduced. On the other hand, the staggered arrangement of the plurality of air inlet holes 111 and the first air outlet 211 can be realized, so that the transmission path of noise in the chamber 30 is prolonged, and the noise is prevented from going straight in and going straight out.

As an example, the second bottom wall 131 includes, but is not limited to, the entire structure thereof for opening the plurality of air inlet holes 111. In addition, the portion of the cover plate 20 opposite to the first bottom wall 121 includes, but is not limited to, a portion of the structure thereof for opening at least one first air outlet 211.

In one embodiment, the difference between S1 and S2 includes, but is not limited to, 2mm to 5 mm. Further, a space between the first bottom wall 121 and the cover plate 20 is defined as L2 (shown in fig. 6). Accordingly, L2 (fig. 6) ≧ L1 (fig. 10), the difference between L2 and L1 includes, but is not limited to, 2mm to 5 mm.

Referring to fig. 1, 3, and 9 to 12, in an embodiment, the cover plate 20 is further provided with at least one second air outlet 221 disposed to be staggered with the plurality of air inlet holes 111. The at least one second air outlet 221 is disposed on a portion of the cover plate 20 opposite to the first bottom wall 121, and the at least one second air outlet 221 and the at least one first air outlet 211 are disposed at an interval. Thus, the air entering the chamber 30 through the plurality of air inlet holes 111 enters the gas water heater through the at least one first air outlet 211, and simultaneously performs a heat dissipation function on one part inside the gas water heater, and the other part of the air enters the gas water heater through the at least one second air outlet 221, and simultaneously performs a heat dissipation function on the other part inside the gas water heater. Thereby playing a better role in heat dissipation.

In one embodiment, the at least one first air outlet 211 is directed towards the motor of the gas water heater (not shown). Therefore, the air exhausted outwards from the at least one second air outlet 221 can be blown to the motor of the gas water heater to dissipate heat for the motor, the heat dissipation effect is good, and the service life of the gas water heater can be prolonged.

As an alternative, the at least one first air outlet 211 and the at least one second air outlet 221 may also face other devices of the gas water heater to dissipate heat of the other devices. Of course, the at least one first air outlet 211 and the at least one second air outlet 221 may not face any device of the gas water heater, and the specific arrangement positions of the at least one first air outlet 211 and the at least one second air outlet 221 may be flexibly selected according to actual requirements, which is not limited herein.

In one embodiment, the first air outlet 211 includes, but is not limited to, a waist shape, and is at least two and arranged at intervals. Likewise, the second air outlet 221 includes, but is not limited to, a waist shape, and is at least two and spaced apart from each other.

Referring to fig. 1, 3, 9 and 11, in an embodiment, a first protrusion 23 and a second protrusion 24 protruding toward the first bottom wall 121 are disposed on a portion of the cover plate 20 opposite to the first bottom wall 121. The first protrusion 23 extends into the first recess 12 and is located between the plurality of air inlet holes 111 and the first air outlet 211, and the second protrusion 24 extends into the first recess 12 and is located between the plurality of air inlet holes 111 and the second air outlet 221. Therefore, on one hand, the first convex portion 23 extends the propagation path of the noise entering the first air outlet 211, and is not a straight-in straight-out manner as in the conventional art, but generates attenuation such as refraction, reflection, diffraction and the like in the chamber 30 due to the pressure type fluctuation, so that the sound energy of part of the noise can be greatly reduced; on the other hand, the first convex part 23 has an avoiding effect on the motor, so that the structure of the gas water heater is more compact. Similarly, the second protrusion 24 extends the noise propagation path entering the second outlet 221, and is not straight inside but inside the chamber 30 due to the undulation of the pressure, such as refraction, reflection, diffraction, etc., which can greatly reduce the sound energy of part of the noise.

Referring to fig. 1, 3, 7 and 8, in an embodiment, the back panel 10 further includes a third recess 14 recessed away from the cover plate 20 and adjacent to the second recess 13. The bottom wall of the third recess 14 is defined as a third bottom wall 141, and the third bottom wall 141 is provided with at least one air inlet 143. At least one third air outlet 251 is disposed on a portion of the cover plate 20 opposite to the third bottom wall 141. The at least one third outlet 251 is offset from the at least one inlet 143. Therefore, the air mainly enters the gas water heater through the plurality of air inlet holes 111, and can enter the gas water heater through the at least one air inlet 143, so that the air volume entering the gas water heater is sufficient. In addition, the air entering the chamber 30 through the at least one air inlet 143 mainly enters the gas water heater through the at least one third air outlet 251, and the at least one third air outlet 251 can dissipate heat of components inside the gas water heater when entering the gas water heater.

In one embodiment, the at least one third outlet 251 is directed toward a controller (not shown) of the gas water heater. Therefore, the air of the at least one third air outlet 251 can play a good heat dissipation role on the controller, and the service life of the controller can be prolonged.

Referring to fig. 1, 3, 7 and 8, in an embodiment, a wind guide plate 144 is disposed at the wind inlet 143, the wind guide plate 144 is located inside the chamber 30, one side of the wind guide plate 144 is connected to a rim of the wind inlet 143, and the other side of the wind guide plate 144 is spaced from the third bottom wall 141 by a gas flow gap. Specifically, the air guiding plate 144 completely covers the air inlet 143 along a projection in a direction perpendicular to the plate surface of the third bottom wall 141. Thus, the structure formed by the air inlet 143 and the air guiding plate 144 is similar to a louver, so that the noise inside the chamber 30 can be prevented from being directly discharged outwards, and the noise can be effectively reduced. The air guiding plate 144 includes, but is not limited to, a bevel plate, an arc plate, or an irregularly shaped plate.

In one embodiment, the total area of the inlet air is greater than the cross-sectional area of the mouth of the flue pipe. Therefore, the air quantity required by gas combustion can be ensured, and the heat dissipation of internal parts can be met. The total area of the intake air is specifically the sum of the area of the intake holes 111, the area of the strip-shaped openings 112, and the area of the intake opening 143.

Of course, if the combustion power of the gas water heater changes (for example, increases), the intake air area on the back panel 10 needs to be adjusted (increased accordingly) according to the theoretical air amount, and the cross-sectional area of the pipe opening of the smoke exhaust pipe needs to be adjusted (increased accordingly) synchronously.

In one embodiment, the depth of the third recess 14 is defined as S3 (shown in fig. 6), S2 ≧ S3.

In one embodiment, the first concave portion 12, the second concave portion 13, the first convex portion 23, the second convex portion 24 and the third concave portion 14 include, but are not limited to, a die process such as blanking, drawing, bending, and the like, and the sheet material blank is integrally formed by pressing.

Referring to fig. 1 to 3, in one embodiment, a gas water heater includes the housing assembly of any one of the above embodiments.

When the gas water heater operates and burns, external fresh air enters the cavity 30 from the air inlet hole 111 and the strip-shaped port 112 and enters the gas water heater from the first air outlet 211, and the supplement and heat dissipation requirements of primary air and secondary air required by burning are met. Meanwhile, compound noises such as combustion oscillation, flame disturbance, fan operation noise and the like generated by combustion enter the chamber 30 through the first air outlet 211 and are transmitted outwards along the opposite direction of air flow. On one hand, the air inlet 111 and the first air outlet 211 are arranged in a staggered manner, so that when the composite noise propagates through the chamber 30 and then outwards, the propagation path is extended, and the attenuation such as refraction, reflection, diffraction and the like is generated in the chamber 30 due to the pressure fluctuation instead of a straight-in and straight-out manner as in the conventional technology, so that the sound energy of part of the noise can be greatly reduced. In addition, the attenuated composite noise reaches the air inlet holes 111 and the strip-shaped openings 112, and the part of the chamber 30 corresponding to the air inlet holes 111 and the air inlet holes 111 form a perforated plate resonance silencer, so that the resonance frequency is close to the frequency of combustion noise, and thus, incident sound waves of the composite noise generate violent vibration friction when passing through the air inlet holes 111, so as to form absorption peaks and reduce sound energy of the noise. Therefore, the noise is attenuated in the process of propagation and diffusion in the cavity 30, and is attenuated by sound energy before being propagated, so that the system noise is effectively reduced, and the running noise of the whole machine can be reduced by about 3dB-5 dB.

It should be noted that, while one of the elements is described as being connected to another element and one of the elements is described as being attached to another element, it should be understood that the two elements may be connected by, for example, bolts, screws, pins, rivets, or by snap-fitting, welding, or integrally forming. Wherein, the integrated molding mode can adopt the processes of extrusion, casting, press fitting, injection molding and the like.

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 examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, 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, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

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 invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean 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.

Claims (12)

1. A gas water heater housing assembly, comprising:

the air conditioner comprises a back panel (10) and a cover plate (20), wherein the cover plate (20) is arranged on the back panel (10), the cover plate (20) and the back panel (10) enclose to form a cavity (30), a strip-shaped opening (112) and a plurality of air inlet holes (111) are formed in the back panel (10), and the air inlet holes (111) are arranged on a wall body of an air inlet path passing through the strip-shaped opening (112); the cover plate (20) is provided with at least one first air outlet (211) which is arranged in a staggered manner with the plurality of air inlet holes (111); the air inlet hole (111), the strip-shaped opening (112) and the first air outlet (211) are communicated with the chamber (30).

2. The housing assembly of a gas water heater according to claim 1, characterized in that the diameter of the air inlet opening (111) defines d, d being 1-3 mm; the thickness of the plate at the position where the air inlet holes (111) are formed in the back panel (10) is defined as t, and t is 0.6mm-1 mm; the distance between the plate body at the air inlet (111) and the cover plate (20) on the back panel (10) is defined as L1, and L1 is 5mm-20 mm; the edge distance between two adjacent air inlet holes (111) is defined as J, and J is 2mm-10 mm.

3. The gas water heater housing assembly of claim 2, wherein d is 3 mm; t is 0.8 mm; l1 is 10 mm; j is 4 mm.

4. The housing assembly of a gas water heater according to claim 1, wherein the back panel (10) is provided with a first recess (12) recessed in a direction away from the cover plate (20), and a second recess (13) disposed adjacent to the first recess (12), the first recess (12) having a depth defined as S1, the second recess (13) having a depth defined as S2, S1 > S2; the bottom wall of the first concave part (12) is defined as a first bottom wall (121), the bottom wall of the second concave part (13) is defined as a second bottom wall (131), the air inlet holes (111) are arranged on the second bottom wall (131), and the first air outlet (211) is arranged on the part, opposite to the first bottom wall (121), of the cover plate (20); at least a part of or the entire area of one of the side walls of the second recess (13) forms the strip-shaped opening (112).

5. The housing assembly of a gas water heater according to claim 4, characterized in that the perforation rate on the second bottom wall (131) is defined as p, p being 0.01-0.02.

6. The housing assembly of a gas water heater according to claim 4, characterized in that said cover plate (20) is further provided with at least one second air outlet (221) arranged in a staggered manner with respect to said plurality of air inlet holes (111).

7. The housing assembly of a gas water heater according to claim 6, wherein the second air outlet (221) is provided on the cover plate (20) at a position opposite to the first bottom wall (121), the second air outlet (221) being spaced apart from the first air outlet (211).

8. The housing assembly of a gas water heater according to claim 6, wherein a first protrusion (23) and a second protrusion (24) protruding toward the first bottom wall (121) are provided on a portion of the cover plate (20) opposite to the first bottom wall (121), the first protrusion (23) extends into the first recess (12) and is located between the plurality of air inlet holes (111) and the first air outlet (211), and the second protrusion (24) extends into the first recess (12) and is located between the plurality of air inlet holes (111) and the second air outlet (221).

9. The housing assembly of a gas water heater according to claim 8, wherein the distance between the panel surface of the cover plate (20) and the first bottom wall (121) is defined as L2, the height of the first protrusion (23) protruding from the panel surface of the cover plate (20) is defined as h1, and the height of the second protrusion (24) protruding from the panel surface of the cover plate (20) is defined as h 2; wherein L2 is more than or equal to 5mm and less than or equal to 20 mm; h1 is more than 5mm and less than 20mm, and h1 is more than L2; 3mm < h2 < 18mm, and h2 < h 1.

10. The housing assembly of a gas water heater according to claim 4, wherein said back panel (10) is further provided with a third recess (14) recessed in a direction away from said cover panel (20) and adjacent to said second recess (13); the bottom wall of the third recess (14) is defined as a third bottom wall (141), and at least one air inlet (143) is arranged on the third bottom wall (141); at least one third air outlet (251) is arranged on the part, opposite to the third bottom wall (141), of the cover plate (20), and the third air outlet (251) and the air inlet (143) are arranged in a staggered mode.

11. The housing assembly of the gas water heater of claim 10, wherein a wind deflector (144) is disposed at the wind inlet (143), the wind deflector (144) is disposed inside the chamber (30), one side of the wind deflector (144) is connected to a mouth edge of the wind inlet (143), and the other side of the wind deflector (144) is spaced from the third bottom wall (141) by a gas flow.

12. A gas water heater characterized in that it comprises a housing assembly according to any one of claims 1 to 11.

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