Noise reduction bracket and gas water heater

Abstract

The present invention relates to a noise reduction bracket and a gas water heater, wherein the noise reduction bracket comprises a main body plate, a first front plate and two first side plates. The main body plate is connected to the top end of the first front plate, and the two first side plates are respectively connected to the two opposite side portions of the first front plate. The main body plate, the first front plate, the two first side plates, part of the outer wall of the fan and part of the outer wall of the burner enclose a first chamber. On the one hand, a first chamber is provided at the periphery of the air inlet of the fan, and the first chamber plays a role of reflecting and consuming the sound emitted from the air inlet of the fan; on the other hand, when the sound emitted from the air inlet of the fan propagates outward, it will pass through the louver, and the louver further plays a role of sound insulation and silencing, thereby effectively reducing the noise of the fan; there is no need to set a silencer at the air inlet of the fan as in the traditional technology, thereby simplifying the structure of the gas water heater and reducing the cost of the device.

Description

Technical Field

[0001] The invention relates to the technical field of water heaters, and in particular to a noise reduction bracket and a gas water heater. Background Art

[0002] With the improvement of living standards, the penetration rate of gas water heaters is high, but gas water heaters also bring greater noise to users, affecting sleep and user experience. Noises such as fan noise and combustion noise will be transmitted from the casing of the gas water heater, the air inlet of the fan or the air outlet of the fan. The transmitted noise is relatively large, resulting in a poor user experience. In order to reduce the noise of the gas water heater, a muffler is generally installed at the air inlet of the fan. However, the muffler is large in size and needs to occupy more space inside the gas water heater, resulting in a larger size of the gas water heater, and the installation site is limited, which increases the cost of the gas water heater. Summary of the invention

[0003] The first technical problem solved by the present invention is to provide a noise reduction bracket, which can effectively reduce noise while reducing the volume size and device cost.

[0004] The second technical problem solved by the present invention is to provide a gas water heater which can effectively reduce noise while reducing volume size and device cost.

[0005] The first technical problem mentioned above is solved by the following technical solution:

[0006] A noise reduction bracket, the noise reduction bracket comprising: a main body plate, a first front plate and two first side plates, the main body plate is connected to the top end of the first front plate, and the two first side plates are respectively connected to two opposite side portions of the first front plate; the main body plate, the first front plate, the two first side plates, and part of the outer wall of the fan enclose a first chamber; the first chamber is used to be arranged at the periphery of the air inlet of the fan and communicate with the air inlet of the fan; the main body plate is located above the fan, the first front plate is used to be arranged opposite to the air inlet of the fan, and the two first side plates are used to be respectively arranged on both sides of the air inlet of the fan, a plurality of waist-shaped holes and a plurality of guide plates are arranged at intervals on the first front plate, and the plurality of guide plates are arranged one by one at the hole edge portions of the plurality of waist-shaped holes, the guide plates are inclined relative to the plate surface of the first front plate, and the first chamber is communicated with the outside through the waist-shaped holes.

[0007] The noise reduction bracket of the present invention has the following beneficial effects compared with the background technology:

[0008] The above-mentioned noise reduction bracket, on the one hand, is provided with a first chamber on the periphery of the air inlet of the fan, and the first chamber plays a role of reflecting and consuming the sound emitted from the air inlet of the fan; on the other hand, when the sound emitted from the air inlet of the fan propagates outward, it will pass through the shutters, and the shutters further play a role of sound insulation and silencing, thereby effectively reducing the fan noise; in addition, there is no need to set a muffler at the air inlet of the fan as in the traditional technology, thereby simplifying the structure of the gas water heater and reducing the cost of the device.

[0009] In one embodiment, a plurality of ventilation holes are provided on the first side plate, and the first chamber is communicated with the outside through the ventilation holes.

[0010] In one embodiment, a sound absorbing layer is provided on the inner wall surface of the first chamber.

[0011] In one embodiment, a straight line passing through the center of the first front plate surface and parallel to the long axis of the waist-shaped hole is defined as a first center line, wherein a part of the waist-shaped holes and another part of the waist-shaped holes are respectively located on both sides of the first center line and are symmetrically arranged about the first center line; wherein a part of the guide plate and another part of the guide plate are respectively located on both sides of the first center line and are symmetrically arranged about the first center line; the projection of the free end of the guide plate on the first front plate surface is closer to the first center line than the connecting end of the guide plate and the first front plate.

[0012] In one of the embodiments, the projection of the guide plate on the surface of the first front plate along a direction perpendicular to the surface of the first front plate synchronously covers an area S1 on the waist-shaped hole corresponding to the guide plate, and the area of ​​the waist-shaped hole is S2, and S1 and S2 satisfy the relationship: S1>0.8S2.

[0013] The above second technical problem is solved by the following technical solution:

[0014] A gas water heater, comprising the noise reduction bracket, a support frame, a heat exchanger, a burner and a fan; the heat exchanger is mounted on the support frame; the burner is mounted on the top of the heat exchanger, and the combustion part of the burner extends into the combustion chamber of the heat exchanger; the fan is mounted on the top surface of the burner; the main body plate is mounted above the fan, the first front plate is arranged opposite to the air inlet of the fan, the two first side plates are respectively arranged on both sides of the air inlet of the fan, and the first chamber is communicated with the air inlet of the fan.

[0015] The gas water heater of the present invention has the following beneficial effects compared with the background technology:

[0016] The above-mentioned gas water heater, on the one hand, is provided with a first chamber on the periphery of the air inlet of the fan, and the first chamber plays a role of reflecting and consuming the sound emitted by the air inlet of the fan; on the other hand, when the sound emitted by the air inlet of the fan propagates outward, it will pass through the shutters, and the shutters further play a role of sound insulation and silencing, thereby effectively reducing the fan noise; in addition, there is no need to set a silencer at the air inlet of the fan as in the traditional technology, thereby simplifying the structure of the gas water heater and reducing the cost of the device.

[0017] In one embodiment, the support frame includes a first vertical plate, two second side plates respectively connected to opposite sides of the first vertical plate, and a top plate connected to the top of the first vertical plate; the two first side plates are located between the two second side plates, and a gap is provided between the first side plate and the second side plate; the first vertical plate, the first side plate, and the second side plate opposite to the first side plate, the top plate, a portion of the outer wall of the burner, and a portion of the outer wall of the fan enclose a second chamber, and the second chamber is communicated with the vent hole on the first side plate.

[0018] In one embodiment, a first window is provided at a position of the first vertical plate corresponding to the first front plate, and an opening wall of the first window is connected to a second front plate via a first connecting plate. The second front plate is further away from the first front plate relative to the first vertical plate, and the second front plate is spaced relative to the first front plate. A first flange is provided at the bottom end of the first front plate, and the first flange is mounted on the first connecting plate.

[0019] In one embodiment, a first flange is provided at the top end of the heat exchanger, and a second flange is provided at the bottom end of the heat exchanger; a first clamp and a second clamp are provided on the outer wall of the heat exchanger; two ends of the first clamp are respectively connected to two second side plates, and the first clamp is in conflict with the first flange; two ends of the second clamp are respectively connected to two second side plates, and the second clamp is in conflict with the second flange.

[0020] In one embodiment, the gas water heater further comprises a shell; the noise reduction bracket, the support frame, the heat exchanger, the burner and the fan are all arranged in the shell; and an air inlet hole is provided on the shell wall of the shell.

[0021] In one embodiment, the support frame also includes a horizontal beam and a second vertical plate; the first vertical plate and the second vertical plate are arranged at opposite ends of the horizontal beam at relative intervals; a second flange is provided on one end of the second vertical plate away from the horizontal beam, and the bottom end of the heat exchanger is connected to the second flange.

[0022] In one embodiment, the gas water heater also includes a controller and a gas proportional valve; the noise reduction bracket also includes at least one support leg connected to the main plate, and the support leg is installed on the burner or the heat exchanger; the controller and the gas proportional valve are both installed on the main plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A structural diagram of a noise reduction bracket according to an embodiment of the present invention from one viewing angle;

[0026] Figure 2 Another structural view of a noise reduction bracket according to an embodiment of the present invention;

[0027] Figure 3 This is a perspective view of a noise reduction bracket installed on a fan and a burner according to an embodiment of the present invention;

[0028] Figure 4 for Figure 3 Schematic diagram of the decomposition structure;

[0029] Figure 5 It is a schematic diagram of the top view of a gas water heater according to an embodiment of the present invention;

[0030] Figure 6 A schematic diagram of the explosion structure of a gas water heater according to an embodiment of the present invention;

[0031] Figure 7 It is a structural schematic diagram of a heat exchanger installed on a support frame according to an embodiment of the present invention;

[0032] Figure 8 A structural diagram of a support frame according to an embodiment of the present invention from one viewing angle;

[0033] Fig. 9 This is another structural view of a noise reduction bracket according to an embodiment of the present invention;

[0034] Fig.10 It is a schematic diagram of the guide plate in the noise reduction bracket according to an embodiment of the present invention projected onto the waist-shaped hole along a direction perpendicular to the first front plate.

[0035] Reference numerals:

[0036] 11. Main plate; 12. First front plate; 121. Waist-shaped hole; 122. Guide plate; 123. First center line; 124. First flange; 13. First side plate; 131. Ventilation hole; 14. Support foot; 15. First fixing plate; 16. Second fixing plate; 20. Fan; 21. Air inlet; 30. Burner; 31. Third flange; 32. Combustion part; 41. First chamber; 42. Second chamber; 43. Third chamber; 44. Fourth chamber; 50. Support frame; 51. The first vertical plate; 511, the first window; 512, the first connecting plate; 513, the second front plate; 52, the second side plate; 53, the top plate; 54, the crossbeam; 55, the second vertical plate; 551, the second flange; 60, the heat exchanger; 61, the first flange; 62, the second flange; 63, the first clamp; 64, the second clamp; 70, the outer shell; 71, the suspension plate; 72, the air inlet; 73, the shell; 74, the upper cover plate; 75, the lower cover plate; 80, the controller; 90, the gas proportional valve. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0038] See also Figure 1 and Figure 2 , Figure 1 A structural diagram of a noise reduction bracket according to an embodiment of the present invention is shown in one viewing angle. Figure 2 Another perspective structural diagram of a noise reduction bracket according to an embodiment of the present invention is shown. A noise reduction bracket provided by an embodiment of the present invention includes a main body plate 11, a first front plate 12 and two first side plates 13. The main body plate 11 is connected to the top of the first front plate 12, and the two first side plates 13 are respectively connected to two opposite side portions of the first front plate 12.

[0039] See also Figures 3 to 5 , Figure 3 The figure shows a perspective view of a noise reduction bracket installed on a fan 20 and a burner 30 according to an embodiment of the present invention. Figure 4 Shows Figure 3 Schematic diagram of the decomposition structure, Figure 5The top view of the gas water heater according to one embodiment of the present invention is shown. The main body plate 11, the first front plate 12, the two first side plates 13, and part of the outer wall of the fan 20 enclose a first chamber 41. The first chamber 41 is used to be arranged at the periphery of the air inlet 21 of the fan 20 and communicate with the air inlet 21 of the fan 20.

[0040] See also Figure 1 , Figure 2 and Figure 4 The main body plate 11 is used to be erected above the fan 20. The first front plate 12 is used to be arranged opposite to the air inlet 21 of the fan 20, and the two first side plates 13 are used to be arranged on both sides of the air inlet 21 of the fan 20. The first front plate 12 is provided with a plurality of waist-shaped holes 121 and a plurality of guide plates 122 at intervals. The plurality of guide plates 122 are arranged at the hole edges of the plurality of waist-shaped holes 121 in a one-to-one correspondence, and the guide plates 122 are arranged obliquely relative to the plate surface of the first front plate 12. The first chamber 41 communicates with the outside through the waist-shaped holes 121.

[0041] It should be noted that a plurality of waist-shaped holes 121 and a plurality of guide plates 122 are provided at intervals on the first front plate 12. The plurality of guide plates 122 are provided one by one at the hole edge portions of the plurality of waist-shaped holes 121. The guide plates 122 are inclined relative to the plate surface of the first front plate 12. The structure formed in this way is similar to a Venetian blind, which has the effect of sound insulation and silencing, as well as diverting and guiding the intake airflow, thereby reducing eddy noise.

[0042] It should be noted that, in order to reduce the noise generated when the airflow flows through the waist-shaped hole 121, the surface of the connection part between the guide plate 122 and the edge of the waist-shaped hole 121 is a smooth surface.

[0043] The above-mentioned noise reduction bracket, on the one hand, is provided with a first chamber 41 at the periphery of the air inlet 21 of the fan 20, and the first chamber 41 plays a role of reflection and consumption of the sound emitted from the air inlet 21 of the fan 20; on the other hand, when the sound emitted from the air inlet 21 of the fan 20 propagates outward, it will pass through the shutters, and the shutters further play a role of sound insulation and silencing, thereby effectively reducing the noise of the fan 20; in addition, there is no need to set a muffler at the air inlet 21 of the fan 20 as in the traditional technology, thereby simplifying the structure of the gas water heater and reducing the cost of the device.

[0044] It should be noted that the first chamber 41 may be formed by more than just the main body plate 11, the first front plate 12, the two first side plates 13, and a portion of the outer wall of the fan 20. For example, a bracket or other components that can cooperate with the "main body plate 11, the first front plate 12, the two first side plates 13, or a portion of the outer wall of the fan 20" may be added to enclose the first chamber 41. As an example, please refer to Figure 1 , Figure 2 and Figure 4 A burner 30 is installed below the bottom side of the fan 20, and the main body plate 11, the first front plate 12, the two first side plates 13, part of the outer wall of the fan 20 and part of the outer wall of the burner enclose a first chamber 41.

[0045] Furthermore, the main plate 11 is specifically erected above the fan 20, that is, the main plate 11 is located above the fan 20, and the main plate 11 is spaced apart from the top surface of the fan 20 to prevent the fan 20 from transmitting vibration to the main plate 11. Of course, the main plate 11 can also be in contact with the top surface of the fan 20 while being located above the fan 20, for example, by means of an elastic buffer material, which can also minimize the vibration transmitted from the fan 20 to the main plate 11.

[0046] See also Figure 1 and Figure 5 In one embodiment, a plurality of vent holes 131 are provided on the first side plate 13. The first chamber 41 is connected to the outside through the vent holes 131. In this way, the acoustic resistance of the orifice plate itself is utilized to achieve a certain noise reduction effect.

[0047] In one embodiment, a sound absorbing layer is provided on the inner wall surface of the first chamber 41. In this way, the sound absorbing layer can effectively reduce the sound propagating outward from the air inlet 21 of the fan 20, and play a certain role in noise reduction.

[0048] See also Figure 1 and Figure 2 In one embodiment, a straight line passing through the center of the first front plate 12 and parallel to the long axis of the waist-shaped hole 121 is defined as the first center line 123, wherein a part of the waist-shaped hole 121 and another part of the waist-shaped hole 121 are respectively located on both sides of the first center line 123 and are symmetrically arranged about the first center line 123. A part of the guide plate 122 and another part of the guide plate 122 are respectively located on both sides of the first center line 123 and are symmetrically arranged about the first center line 123. The projection of the free end of the guide plate 122 on the surface of the first front plate 12 is closer to the first center line 123 than the connecting end of the guide plate 122 with the first front plate 12. In this way, the noise of the fan 20 can be effectively reduced. It should be noted that the long axis of the waist-shaped hole 121 refers to the line connecting the two points on the waist-shaped hole 121 that are farthest apart, and the short axis of the waist-shaped hole 121 refers to the line connecting the two points on the waist-shaped hole 121 that are closest to each other.

[0049] For example Figure 1 or Figure 2There are 8 waist-shaped holes 121 shown in the figure, and the 4 waist-shaped holes 121 on the left are symmetrically arranged with the 4 waist-shaped holes 121 on the right about the first center line 123. A guide plate 122 is provided at the edge of each waist-shaped hole 121, and the 4 guide plates 122 on the left are symmetrically arranged with the 4 guide plates 122 on the right about the first center line 123. It should be noted that the waist-shaped holes 121 arranged on the first front plate 12 can also be other numbers, which are not limited here.

[0050] See also Figure 1 , Fig. 9 and Fig.10 , Fig. 9 Another structural view of a noise reduction bracket according to an embodiment of the present invention is shown. Fig.10 The schematic diagram of the guide plate in the noise reduction bracket of one embodiment of the present invention after being projected on the waist-shaped hole along the direction perpendicular to the first front plate is shown. In one embodiment, the projection of the guide plate 122 on the surface of the first front plate 12 along the direction perpendicular to the surface of the first front plate 12 simultaneously covers an area S1 on the waist-shaped hole 121 corresponding to the guide plate 122, and the area of ​​the waist-shaped hole 121 is S2, and S1 and S2 satisfy the relationship: S1>0.8S2. In this way, it can play a role in sound insulation and silencing, as well as play a role in diverting and guiding the intake airflow, which can greatly reduce the noise of the air inlet 21 of the fan 20, and reduce the eddy noise.

[0051] See also Figure 5 and Figure 6 , Figure 6 The exploded structure schematic diagram of a gas water heater according to an embodiment of the present invention is shown. In one embodiment, a gas water heater includes a noise reduction bracket according to any of the above embodiments, and further includes a support frame 50, a heat exchanger 60, a burner 30 and a fan 20. The heat exchanger 60 is mounted on the support frame 50. The burner 30 is mounted on the top of the heat exchanger 60, and the combustion part 32 of the burner 30 extends into the combustion chamber of the heat exchanger 60. The fan 20 is mounted on the top surface of the burner 30. The main body plate 11 is mounted above the fan 20, the first front plate 12 is arranged opposite to the air inlet 21 of the fan 20, the two first side plates 13 are respectively arranged on both sides of the air inlet 21 of the fan 20, and the first chamber 41 is communicated with the air inlet 21 of the fan 20.

[0052] The above-mentioned gas water heater, on the one hand, is provided with a first chamber 41 at the periphery of the air inlet 21 of the fan 20, and the first chamber 41 plays a role of reflecting and consuming the sound emitted from the air inlet 21 of the fan 20; on the other hand, when the sound emitted from the air inlet 21 of the fan 20 propagates outward, it will pass through the shutters, and the shutters further play a role of sound insulation and silencing, thereby effectively reducing the noise of the fan 20; in addition, there is no need to set a silencer at the air inlet 21 of the fan 20 as in the traditional technology, thereby simplifying the structure of the gas water heater and reducing the cost of the device.

[0053] See also Figure 1 , Figure 7 and Figure 8 , Figure 7 FIG. 1 is a schematic diagram showing a heat exchanger 60 installed on a support frame 50 according to an embodiment of the present invention. Figure 8 One of the perspective structural diagrams of the support frame 50 of an embodiment of the present invention is shown. Furthermore, the support frame 50 includes a first vertical plate 51, two second side plates 52 respectively connected to the opposite sides of the first vertical plate 51, and a top plate 53 connected to the top of the first vertical plate 51. The two first side plates 13 are located between the two second side plates 52, and a gap is provided between the first side plate 13 and the second side plate 52. The first vertical plate 51, the first side plate 13, and the second side plate 52 opposite to the first side plate 13, the top plate 53, a part of the outer wall of the burner 30, and a part of the outer wall of the fan 20 enclose a second chamber 42. The second chamber 42 is communicated with the vent hole 131 on the first side plate 13. In this way, the noise emitted from the air inlet 21 of the fan 20 first enters the first chamber 41, and then enters the second chamber 42 through the vent 131 from the first chamber 41. The first chamber 41, the vent 131 and the second chamber 42 successively play a good role in consuming the noise of the fan 20, so that the noise reduction effect is obvious. In addition, the second chambers 42 formed by the enclosed are two, which are located on both sides of the first chamber 41.

[0054] Specifically, the wall surface of the second chamber 42 is a hard wall surface, which makes the sound source reflect and consume during the propagation process, thus playing a certain role in silencing. In addition, similar to the first chamber 41, a sound absorbing layer can also be provided on the wall surface of the second chamber 42.

[0055] See also Figure 7 and Figure 8 In one embodiment, the first vertical plate 51 is provided with a first window 511 at a position corresponding to the first front plate 12, and the mouth wall of the first window 511 is connected to the second front plate 513 through the first connecting plate 512. The second front plate 513 is further away from the first front plate 12 relative to the first vertical plate 51, and the second front plate 513 and the first front plate 12 are arranged at a relative interval. A first flange 124 is provided at the bottom end of the first front plate 12. The first flange 124 is mounted on the first connecting plate 512. In this way, the first front plate 12, the second front plate 513 and the first flange 124 enclose and form a third chamber 43, and the third chamber 43 further silences the noise propagating outward from the blinds, thereby improving the silencer effect. In addition, similar to the first chamber 41, a sound-absorbing layer can also be provided on the surface of the cavity wall of the third chamber 43. In addition, when the second front plate 513 is further away from the first front plate 12 relative to the first vertical plate 51 , the second front plate 513 can be mounted on the suspension plate 71 of the housing 70 using mounting members.

[0056] It should be noted that in the infringement comparison, the "first connecting plate 512 and the second front plate 513" can be "a part of the first vertical plate 51", that is, the "first connecting plate 512 and the second front plate 513" are integrally formed with the "other parts of the first vertical plate 51"; or they can be an independent component that can be separated from the "other parts of the first vertical plate 51", that is, the "first connecting plate 512 and the second front plate 513" can be independently manufactured and then combined with the "other parts of the first vertical plate 51" into a whole. Figure 8 As shown, in one embodiment, the “first connecting plate 512 and the second front plate 513 ” are a part of the “first vertical plate 51 ” that is integrally formed.

[0057] See also Figures 5 to 7 In one embodiment, the gas water heater further includes a housing 70. The noise reduction bracket, the support frame 50, the heat exchanger 60, the burner 30 and the fan 20 are all arranged in the housing 70. An air inlet 72 is provided on the shell wall of the housing 70. In this way, the area enclosed by the housing 70 is equivalent to the fourth chamber 44. After the air in the external environment enters the fourth chamber 44 through the air inlet 72, on the one hand, it can be drawn into the fan 20 through the fourth chamber 44, the third chamber 43, the shutter, the first chamber 41 and the air inlet 21 of the fan 20; on the other hand, it can also be drawn into the fan 20 through the fourth chamber 44, the second chamber 42, the vent 131, the first chamber 41 and the air inlet 21 of the fan 20. Correspondingly, the noise reduction paths of the fan 20 are divided into: 1. Noise reduction is carried out in sequence by the first chamber 41, the shutter and the third chamber 43; 2. Noise reduction is carried out in sequence by the first chamber 41, the vent 131, the second chamber 42 and the fourth chamber 44.

[0058] In this way, multiple chambers are connected in sequence to form a multi-chamber muffler, achieving a reactive muffler effect. By changing the size of the airflow channel area of ​​the air intake path, the sound waves in the air intake channel are reflected and attenuated at the cross-sectional mutation point. Since the airflow channel area is often changing, it also has some characteristics of reactive muffler.

[0059] In addition, since the multi-chamber silencer is designed by utilizing the original functional parts of the gas water heater itself without adding any additional parts, it has low cost, simple manufacturing, few parts, and does not increase the volume of the gas water heater, thereby achieving the effect of noise reduction and small volume.

[0060] It is understandable that the second chamber 42 and the third chamber 43 are not completely sealed chambers, and the second chamber 42 and the third chamber 43 are both communicated with the first chamber 41 .

[0061] It should be noted that the housing 70 specifically includes, for example, a housing 73, an upper cover plate 74 detachably mounted on the top of the housing 73, and a lower cover plate 75 detachably mounted on the bottom of the housing 73. The air inlet 72 is, for example, disposed on the housing 73 and / or the lower cover plate 75. In addition, the top plate 53 is fixedly connected to the upper cover plate 74, and the bottom of the support frame 50 is fixedly connected to the lower cover plate 75.

[0062] In one embodiment, the gas water heater further includes a controller 80 and a gas proportional valve 90. The noise reduction bracket further includes at least one support leg 14 connected to the main body plate 11, and the support leg 14 is mounted on the burner 30 or the heat exchanger 60. The controller 80 and the gas proportional valve 90 are both mounted on the main body plate 11. In this way, the main body plate 11 is connected with the support leg 14, and the support leg 14 is mounted on the burner 30 or the heat exchanger 60, so that the main body plate 11 can be mounted above the fan 20, that is, the main body plate 11 can be prevented from contacting the fan 20, thereby preventing the fan 20 from transmitting vibration to the main body plate 11. In addition, a certain distance is set between the controller 80 and the gas proportional valve 90 and the fan 20, so that the vibration caused by the fan 20 can be reduced, thereby reducing the noise caused by the vibration. The distance can also provide a cooling channel for the fan 20 and the controller 80 to ensure the service life.

[0063] See also Figure 7 , further, a first flange 61 is provided at the top end of the heat exchanger 60, and a second flange 62 is provided at the bottom end of the heat exchanger 60. The outer wall of the heat exchanger 60 is provided with a first clamp 63 and a second clamp 64. The two ends of the first clamp 63 are respectively connected to the two second side plates 52, and the first clamp 63 conflicts with the first flange 61. The two ends of the second clamp 64 are respectively connected to the two second side plates 52, and the second clamp 64 conflicts with the second flange 62. In this way, the heat exchanger 60 can be stably mounted on the support frame 50 through the first clamp 63 and the second clamp 64, and the disassembly and assembly operation of the heat exchanger 60 is more convenient. In addition, the second side plate 52 is not only used to enclose the second chamber 42, but also used to be connected to the second clamp 64 to install the heat exchanger 60.

[0064] See also Figure 7 and Figure 8 In one embodiment, the support frame 50 further includes a crossbeam 54 and a second vertical plate 55. The first vertical plate 51 and the second vertical plate 55 are arranged at opposite ends of the crossbeam 54 at intervals. A second flange 551 is provided on one end of the second vertical plate 55 away from the crossbeam 54, and the bottom end of the heat exchanger 60 is connected to the second flange 551. Specifically, the second flange 62 at the bottom end of the heat exchanger 60 is mounted on the second flange 551. The second flange 551 supports the bottom end of the heat exchanger 60, so that the heat exchanger 60 is stably mounted on the support frame 50.

[0065] In addition, the gas water heater further includes a smoke hood (not shown) disposed below the heat exchanger 60. The smoke hood collects smoke and discharges it centrally. In addition, the burner 30 is provided with a third flange 31, which is fixedly mounted on the top of the heat exchanger 60.

[0066] Furthermore, the air outlet of the fan 20 (not shown in the air outlet diagram) is connected to the burner 30. When working, the air enters the air inlet 21 of the fan 20, mixes with the gas to form an air-fuel mixture, and then burns in the burner 30. After combustion, it exchanges heat with the heat exchanger 60, and finally the smoke is discharged from the smoke hood. Since the combustion part 32 of the burner 30 is installed in the combustion chamber, it is well sealed with the heat exchanger 60, which can reduce the propagation of combustion noise and achieve a noise reduction effect.

[0067] Specifically, the support leg 14 is mounted on the first flange 61 or the third flange 31. The noise reduction bracket also includes a first fixing plate 15 and a second fixing plate 16 mounted on the main plate 11. The first fixing plate 15 is used to fix the gas proportional valve 90. The second fixing plate 16 is used to fix the controller 80.

[0068] It should be noted that in the infringement comparison, one of the components described in the text is connected to another component, and one of the components is installed on another component. It can be understood that the connection method of the two components can be connected by bolts, screws, pins, rivets and other mounting parts, or fixedly connected by clamping, welding or integrated molding. Among them, the integrated molding method can be extrusion, casting, press fitting, injection molding and other processes.

[0069] Furthermore, the parts other than the docking interface with the air inlet 21, the waist-shaped hole 121 and the vent hole 131 on the wall of the first chamber 41 are structures with good sealing properties, thereby achieving a good noise reduction effect.

[0070] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0072] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0073] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0074] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0076] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

Claims

1. A gas water heater, characterized in that: The gas water heater comprises a noise reduction bracket, a support frame (50), a heat exchanger (60), a burner (30) and a fan (20); the noise reduction bracket comprises: A main body plate (11), a first front plate (12) and two first side plates (13), wherein the main body plate (11) is connected to the top end of the first front plate (12), and the two first side plates (13) are respectively connected to two opposite side portions of the first front plate (12); the main body plate (11), the first front plate (12), the two first side plates (13) and a part of the outer wall of the fan (20) enclose a first chamber (41); the first chamber (41) is used to be arranged at the periphery of the air inlet (21) of the fan (20) and communicate with the air inlet (21) of the fan (20); the first The front plate (12) is used to be arranged opposite to the air inlet (21) of the fan (20); the two first side plates (13) are used to be arranged on both sides of the air inlet (21) of the fan (20) respectively; a plurality of waist-shaped holes (121) and a plurality of guide plates (122) are arranged at intervals on the first front plate (12); the plurality of guide plates (122) are arranged one by one at the hole edges of the plurality of waist-shaped holes (121); the guide plates (122) are arranged obliquely relative to the plate surface of the first front plate (12); and the first chamber (41) communicates with the outside through the waist-shaped holes (121); The heat exchanger (60) is mounted on the support frame (50); the burner (30) is mounted on the top of the heat exchanger (60), and the combustion part (32) of the burner (30) extends into the combustion chamber of the heat exchanger (60); the fan (20) is mounted on the top surface of the burner (30); the main body plate (11) is mounted above the fan (20), the first front plate (12) is arranged opposite to the air inlet (21) of the fan (20), the two first side plates (13) are respectively arranged on both sides of the air inlet (21) of the fan (20), and the first chamber (41) is communicated with the air inlet (21) of the fan (20); The support frame (50) comprises a first vertical plate (51), two second side plates (52) respectively connected to opposite sides of the first vertical plate (51), and a top plate (53) connected to the top of the first vertical plate (51); the two first side plates (13) are located between the two second side plates (52), and a gap is provided between the first side plate (13) and the second side plate (52); the first vertical plate (51), the first side plate (13), and the second side plate (52) opposite to the first side plate (13), the top plate (53), a part of the outer wall of the burner (30), and a part of the outer wall of the fan (20) enclose a second chamber (42), and the second chamber (42) is communicated with the vent hole (131) on the first side plate (13).

2. The gas water heater according to claim 1, characterized in that: The first side plate (13) is provided with a plurality of ventilation holes (131), and the first chamber (41) is in communication with the outside through the ventilation holes (131).

3. The gas water heater according to claim 1, characterized in that: A sound absorbing layer is provided on the inner wall surface of the first chamber (41).

4. The gas water heater according to claim 1, characterized in that: A straight line passing through the center of the first front plate (12) and parallel to the long axis of the waist-shaped hole (121) is defined as a first center line (123), wherein a portion of the waist-shaped hole (121) and another portion of the waist-shaped hole (121) are respectively located on both sides of the first center line (123) and are symmetrically arranged about the first center line (123); wherein a portion of the guide plate (122) and another portion of the guide plate (122) are respectively located on both sides of the first center line (123) and are symmetrically arranged about the first center line (123); a projection of the free end of the guide plate (122) on the surface of the first front plate (12) is closer to the first center line (123) than the connection end of the guide plate (122) with the first front plate (12).

5. The gas water heater according to any one of claims 1 to 4, characterized in that: The projection of the guide plate (122) on the surface of the first front plate (12) in a direction perpendicular to the surface of the first front plate (12) synchronously covers an area S1 on the waist-shaped hole (121) corresponding to the guide plate (122), and the area of ​​the waist-shaped hole (121) is S2, and S1 and S2 satisfy the relationship: S1>0.8S2.

6. The gas water heater according to claim 1, characterized in that: The wall surface of the second chamber (42) is a hard wall surface.

7. The gas water heater according to claim 1, characterized in that: A sound absorbing layer is arranged on the wall surface of the second chamber (42).

8. The gas water heater according to claim 1, characterized in that: The first vertical plate (51) is provided with a first window (511) at a position corresponding to the first front plate (12); the mouth wall of the first window (511) is connected to the second front plate (513) via a first connecting plate (512); the second front plate (513) is further away from the first front plate (12) than the first vertical plate (51); the second front plate (513) and the first front plate (12) are arranged at a relative interval; the bottom end of the first front plate (12) is provided with a first flange (124), and the first flange (124) is mounted on the first connecting plate (512).

9. The gas water heater according to claim 1, characterized in that: The gas water heater further comprises an outer shell (70); the noise reduction bracket, the support frame (50), the heat exchanger (60), the burner (30) and the fan (20) are all arranged in the outer shell (70); and an air inlet hole (72) is provided on the shell wall of the outer shell (70).

10. The gas water heater according to any one of claims 1 to 4, characterized in that: The gas water heater further comprises a controller (80) and a gas proportional valve (90); the noise reduction bracket further comprises at least one support leg (14) connected to the main body plate (11), the support leg (14) being mounted on the burner (30) or the heat exchanger (60); the controller (80) and the gas proportional valve (90) are both mounted on the main body plate (11).

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